as long as the target boost is lower than the maximum PSI the compressor can hold. this shouldn't be bad at all for the turbo. in fact you could do it all day and it wouldn't make a difference, might get a little annoying in a DD though.
I don't know why some people on the tube are so dump. It says on the description that BOV were closed during the test to make sure it is not the factor.
This is compression surge where the target PSI is higher than the compressor can take, turbulence occurs and compressor stall happens. that 20.5 psi air leaked through the fast spinning compressor in rapid successions, thus the flutter. Maybe it can use a larger compressor/housing. I mean, 20psi is high but not that high.
I didn't learn anything from this vid other than your car needs to be tuned by someone that knows what they are doing. Get your car fixed before it blows.
Surge = stall. It happens in jet engines, too, and they are fully open from one end to the other. A closing throttle plate is NOT compressor surge. BOV flutter is just that, the BOV fluttering.
@timramich really? this is a form of CS but the flutter noise people like is compressor surge air flowing backwards over the compressor wheel making a flutter noise
@guccamain No, it would be the BOV closing and opening, over and over. The BOV opens, the system loses pressure, it closes, pressure regains, it opens, repeat. BOV flutter has not been proven to be harmful. It happens even at low throttle with little, if any boost. Compressor surge happens when the turbo is being driven by exhaust, not spinning down from inertia and hearing this BOV flutter crap.
I'm not one to cringe at the sound of nails being ran across a chalk board, but the sound compressor surge sound from :46 and on make me take off my headphones and scratch my teeth....god damn
got a simple answer for all of these damn comments..... DO THE MATH, READ THE MAPS, UNDERSTAND WHAT YOUR TALKING ABOUT BEFORE YOU SOUND STUPID ITS A DEMO VIDEO FOR THE UNINFORMED...for those that need the math for their engine go to garrets site and check it out... its free.... btw thanks synaptic systems for the free demo.... hows it run now if ya still got her..
@aglxosiris Yeah it really depends on the size of the turbo I think, my friend's going to throw a Dodge ram turbo on his BMW and run like 7lbs of boost for around 300hp.
@kollak01 SMALLER turbo, actually. The turbo they are using is trying to flow too much air and its at the left side of the map at surge. A smaller turbo will move flow to the right.
ok so I finally found out what compressor surge is: a region in the turbo map where airflow is unstable, thus boost pressure can rise above it's stable maximum, then fall back down. When pressure inside the compressor housing drops, manifold pressure is higher, causing backward flow into the compressor housing, and therefore compressor stall!
yeah basically the map on that turbo is wrong for the application. this person needs to map a turbo before they just do the old slap on method like everyone else.
Why would the air flow rate compressor side decrease the turbo RPM like it is here? This must be something to do with the turbine side, either stalling flow, or something fishy going on with that wastegate.
@rowanationer no its because each individual turbo is engineered to move a certain amount of air and when it reaches that maximum point the air in the system becomes more unstable and the turbo cannot keep it compressed so it keeps trying to come back out the inlet even tho he is wide open. remember there is no physical connection between a motor and a turbo its all done with fluidynamics. and the exhuast gases just cant spin that turbine side and faster
@jasoncarney5886 Yeah I think it's just over-spooling isn't it? Higher RPM than the turbine or compressor are designed for, so flow conditions in one or both of them are being disturbed, which temporarily reduces boost until it spools back up again.
The comments on this crack me up people like why would you want your blow off valve shut!! haha why wouldnt you!! when you get old enough to own a car hows about you just take the bov off completely leave a big hole for the pressure to get of, good luck even getting it started mate hahaha
tO EVERY LITTLE FUCKER OUT THERE ON YOU TUBE LAND PLEASE WATCH THIS VIDEO BEFORE YOU GO WRITING DUMBASS COMMENTS ABOUT COMPRESSOR SURGE ON VIDS WITH EXTERNAL GATES AND SCREAMERS ETC ETC.. FUCKING ETC!!! =]
thies shop mechanics are stupit..i bet thats a fucked up turbo set up..prolly need a new turbo and better header..bet if you adjust the throttle you can get a quick fix..something is not balanced properly..could come from overdriveing/overdrawing your car...lol i bet that fluttering sound throws em off
WOOHOO! Look at all the people being bench mechanics! I love saying shit without evidence and getting angry when people don't believe me!
Guess what? If you have an issue (this video case in point) your never going to fix it without successive tests to ensure you know what is truly happening. Engine development for people without an accurate computer model is largely trial and error. Sometimes you blow a motor up... its call learning.
what fucking douchebag mechanic did you have working on this sexy bitch .r u fucking nuts?!?!?! the asshole tells you its comressor surge or confirms the shit after doing that 5 or 6 times to your turbo and motor?keep this tape asevidence just incase your shit fucks up.if that was my car and i would have seen that shit i would have shoved a turbo up his ass and twisted it.and only if this was you doing this....your fucking stupid
This is exactly what I was feeling and hearing recently till i spun something downlow. I surgeg cause I used a small hot side on higher then normal boost.
If engine temps go up, wouldn't you notice it at the IAT sensor readings???
The solution is a bigger turbo or different compressor wheel or housing. You need to match the compressor curve so when you take your engine displacement and work out mass flow, you want to run up the most efficient part of the compressor map. It can be tricky to match it perfectly. You want to be there to avoid high-speed surge like this and also to avoid making too much heat that will make the engine knock and blow up. The circular rings on a turbo comp map are efficiency.
@ohai2u The problem is that the compressor stalls because of too much pressure.
There are some solutions, because the high pressure can be reduced (with the same airflow) by some ways.
You can change the int.cams to improve airflow (the same turbo with the same airflow with better cams, you have the same mass of comp.air at less T and P), or change the comp. casing (different A/R), or changing all the comp.side, or, IF the WG opens a lot(power wasted), you can change the turbo for a bigger one.
@ohai2u~ U dont match the engine to the turbo. U match the turbo to the engine. If u want proper/thorough answers to these questions.... then buy a book or 2 about Turbo systems!. And dont try to get answers from dimwits on the internet.
yep no dout about that vid...... if you watch close you can see the pipes expand at the coupling points.\, takes alot of boost for that to happen. lucky you didnt blow the engine
The Synchronic line of products are available by registering at SYNAPSEENGINEERING*COM/CART, use referral code YOUTUBE when you register and be eligible for limited edition designs and market pre-releases
Under what circumstances would you ever want to run your engine with the BOVs forced shut? I hope you're aware that unless your engine can outclimb the turbo to infinity, you're always going to surge. Are you really engineers? If so, are you some of the vast majority of MEs that never turned a wrench before getting their BS in Mechanical? Because if you are, you dipshits scare me.
@jsk8r13 im not sure why it sounds like the throttle body isnt big enough for all that boost so it causes back pressure
other kinds of compressor surge is when your throttle body snaps shut and your blow off valve doesnt release it it causes the turbo to spin backwards making a "cool" sound
You guys are surprised when you came across compressor surge? There should be no positive outcome nor data from doing this test other than to test how long the turbo/motor will last with a forced shut BOV. UNLESS you guys don't know that a closed BOV will caused compressor surge.. u shoudn't be drifting to begin with.
BB turbos can take this alot better then journal bearing but its still hell on it.
This will destroy the thrust washer having a shit load of exhaust back pressure post turbo will do the reveres of this and cause thrust wear on the other side of the of washer. This is the leading cause of turbo failure on semi trucks. They never replace the 100$ muffler for a million miles and blow turbos and burn exhaust valves up.
Anyway a BOV will not fix surging on boost its a turbine/compressor sizing issue.
@seri267 No...bad quality BOV. Its too tight and doesnt relieve the pressure in the pipes,making the turbo spit the air back out through the intake side
how? the bov/dv only lets pressure out the system when theres a vacuum manifold side,
its plain and simple, they have the boost too high and the engine cant recive all of the boost the turbo is shoving in, so theres back pressure, which i guess would activate the dv if theres a drop in pressure, but you can clearly hear the fluttering on the turbo
@blyndrotor no, surge occurs when the relationship between flow and pressure exceeds the value where the turbo is designed ...
With the engine a little higher speed, the turbo can (for example) run at a higher speed, and at the same pressure can provide more airflow without breaking the aerodynamic balance in its inside, and then it can run without surging.
Surge is "similar" to cavitation in water pumps, with some limits gived by the different fluids (air or water) the pumps are processing.
@marek0086 It is similar to cavitation, not the same thing, bacause of the totally different nature of the operating fluid, that causes different effect to the comp. (or pump, in liquids) wheel.
@dadoVRC~ Its exactly "CAVITATION". Thats exactly whats happening.... your getting CAVITIES (pockets) of negative pressure. OF COURSE its NOT the SAME as with a heavier, thicker fluid (eg. water, oil... etc).... but thats a no-brainer!.
Yes of course, if it was pumping, say, water intead of air, the comp wheel would break apart at the first occurence of cavitation.
lol ah i remember this happening with my old car....ah those were the days. Full tap, 1.2bar boost then, DUMP 0.8bar then back to 1.2bar. Only in the right conditions tho..had to be cold but low humidity, fucking sucked ass
@btcruz lol, You dopes think turbos making odd sounds is cool...HAHAHAHA. What idiots.
frickin ricers suck...lol
listen here you fuck first learn how to fucking type in english none of this black gangster typing with dopes or uh or shit like that second dude i bet your making fun of tuners becasue u drive a minivan with rims that are to big and a gay ass bodykit and a wing thats three times taller then the van its self third your probly also mad cause you have no life no money
@ btcruz part 2 to buy a really car and cause you have no girl also no one every said anything about sourge sounding cool and if u look up the word ricer you will find out wat it really means u fag so quiet talking out of ur ass and fuck off
@btcruz lol, You dopes think turbos making odd sounds is cool...HAHAHAHA. What idiots.
frickin ricers suck...lol buy a really car and cause you have no girl also no one every said anything about sourge sounding cool and if u look up the word ricer you will find out wat it really means u fag so quiet talking out of ur ass and fuck off
flutter is nothing compaired to this. exhaust housing is too small meaning engine is forcing MORE air in when the exhaust housing is at its full protential( meaning it needs a bigger housing). youtube term : ride a bmx down a hill and keep peddling, when your foot slips off that peddle and you fall off thats the feeling of turbo snaping a shaft. :D
Would a ball bearing turbo die from 15 psi compressor surge/dose/flutter? or are those 3 thing different? i got one free in on my R33 gtst when i bought it but it has standard dump valve atm, if its real bad im buyin a greddy rs from my matey on march 2nd
@speedytang4 bov got nothing to do with the "on throttle surge" you are thinking about the tsh tsh tsh sound that comes when you lett off the throttle on a car with no bov/too tight bov or not working bov
big turbo + small intake flow = turbo surge/staling !!!! do to small exshaust housing/turbin wheel and big compresor wheel turbo hit to much boost at to low rpm !!! its spool up to fast :(((
Geez thats bad! I thought this was gonna be surge when comming off the throttle, but this is actually really bad when it surges on WOT/load and takes away from the performance of the car.
Theyre two different (with similar result) things. Surge is this, the gay noise you hear when people lift of the throttle without a BOV is Compressor Stall.
Thankyou so much for posting the real compressor surge that people should be worrying about. I am having this problem to some extent, and it only surfaced after I installed upgraded intercoolers. Could they be restricting the flow so much that I know get compressor surge (only in high gears going up hill at low rpm when going full throttle).
Yes i would be a bit jealous to have the money to be doing that. I'm pretty sure everyone would...?
I'm not sure how doing it over and over again is education. If you do it once to get the sound, then you know. You don't need the same sound over and over again to get the point across. The fact that you're trying to argue with that, is beyond me knowledge.
ok i have a tial 50mm and it sounds like compressor surge but then again my motor runs hard and stong how can i differenciate whether or not its compressor sugre
@boosted01gsr Actually my S10 with an All American 2.2L 4 Cylinder is supercharged like a madman and will eat any import on the strip. My diesel truck is tuned/turboed and can throw 9,500lbs of weight faster than most imports I've met. So to answer your questions, that never happens
If this car was loaded up on a strip and not a dyno the compressor surge would be no where near as bad, it is only because the revs were static and even sounded like they were decreasing at one stage.
Also why the fuck would you keep the throttle open when it is doing this? Great way to kill the turbo bearings.
Do they make an anti surge compressor housing for that particular turbo? If not I would consider using a slightly smaller trim number or port the head and get some more cam in it.
@mediarocker543 yeah i think we got the point theres compressor surge. it isn't fucking rocket science, but yet maybe to you it is because you're under educated and ignorant. shut the fuck up bitch.
@jakep2007, true, but this is a demonstration for the masses. So people who wanna get into tuning, or who are backyard mechanics can know what destructive turbo surge sounds like. Not only that but this is useful documentation for companies.
@machetero1@KrazyKuul111 well, there are three cent. supercharger companies out there: Paxton, Vortech, and Pro Charger. Paxton has been around since the 60's, but procharger is the best because their superchargers are self contained. What I mean by that is no extra oil lines to and from the oil sumps and oil pumps from the engine.
The only drawbackwith a centri. blower, boost is made with rpm.
as long as the target boost is lower than the maximum PSI the compressor can hold. this shouldn't be bad at all for the turbo. in fact you could do it all day and it wouldn't make a difference, might get a little annoying in a DD though.
urmomisfineinbed 2 days ago
I don't know why some people on the tube are so dump. It says on the description that BOV were closed during the test to make sure it is not the factor.
This is compression surge where the target PSI is higher than the compressor can take, turbulence occurs and compressor stall happens. that 20.5 psi air leaked through the fast spinning compressor in rapid successions, thus the flutter. Maybe it can use a larger compressor/housing. I mean, 20psi is high but not that high.
golferchin76 1 week ago
probably the reason why is the boost settings or just a faulty dumpvalve. they have to test it out a couple times to see the base of this problem.
richrich27 2 weeks ago
it seems like a really good idea to do it a few more times....
1337xxh4kz 2 weeks ago 2
I didn't learn anything from this vid other than your car needs to be tuned by someone that knows what they are doing. Get your car fixed before it blows.
rekevin1 3 weeks ago
@rekevin1 Ditto. If a turbo is surging at 4000rpm then its WAY too big for the engine. At only 300hp they need a turbo about 2/3 that frame size.
Turbo617 1 day ago
put a bigger exhaust housing on it
jakes777777 3 weeks ago
Surge = stall. It happens in jet engines, too, and they are fully open from one end to the other. A closing throttle plate is NOT compressor surge. BOV flutter is just that, the BOV fluttering.
timramich 1 month ago
Finally, a REAL example compressor surge, not what people blindly call BOV flutter.
timramich 1 month ago
@timramich really? this is a form of CS but the flutter noise people like is compressor surge air flowing backwards over the compressor wheel making a flutter noise
guccamain 1 month ago
@guccamain No, it would be the BOV closing and opening, over and over. The BOV opens, the system loses pressure, it closes, pressure regains, it opens, repeat. BOV flutter has not been proven to be harmful. It happens even at low throttle with little, if any boost. Compressor surge happens when the turbo is being driven by exhaust, not spinning down from inertia and hearing this BOV flutter crap.
timramich 1 month ago
@timramich what school did you go to?
guccamain 1 month ago
@timramich But it has nothing to do with a BOV.
ldturbs 1 week ago
I'm not one to cringe at the sound of nails being ran across a chalk board, but the sound compressor surge sound from :46 and on make me take off my headphones and scratch my teeth....god damn
Mofoe2001 1 month ago
got a simple answer for all of these damn comments..... DO THE MATH, READ THE MAPS, UNDERSTAND WHAT YOUR TALKING ABOUT BEFORE YOU SOUND STUPID ITS A DEMO VIDEO FOR THE UNINFORMED...for those that need the math for their engine go to garrets site and check it out... its free.... btw thanks synaptic systems for the free demo.... hows it run now if ya still got her..
onefastsuby 1 month ago
soo you need a bigger turbo, or less boost at that rpm level, sound like you need a progressive boost controller
reatard132 2 months ago
@reatard132 No, they actually need a SMALLER turbo.
Turbo617 1 day ago
@Turbo617 oh. really...
reatard132 1 day ago
So its 300hp....its a drift car not a racing one
NZLMade 2 months ago
300whp at 20psi? lol...
aglxosiris 4 months ago
@aglxosiris
Nothing makes power while a turbo is surging
cprstreetmachines 3 months ago
@aglxosiris My S60R is 300whp at 20psi, are you saying that's high or low?
DutchMasterStatus 3 months ago
@DutchMasterStatus welll, i unno, im at 333whp at 13psi...
aglxosiris 3 months ago
@aglxosiris Yeah it really depends on the size of the turbo I think, my friend's going to throw a Dodge ram turbo on his BMW and run like 7lbs of boost for around 300hp.
DutchMasterStatus 3 months ago
@DutchMasterStatus i have one sitting in my garage if he wants it haha
kellysap1989 2 months ago
@kellysap1989 Where are you located? He's actually interested if you don't mind parting with it.
DutchMasterStatus 2 months ago
@DutchMasterStatus colorado
kellysap1989 2 months ago
so basically it needs a bigger turbo? how would you go about remedying this?
kollak01 4 months ago
@kollak01 it doesnt have to be a bigger turbo. you can change the compressor wheel or housing
sportscarfan1989 4 months ago
@sportscarfan1989
interesting.
kollak01 4 months ago
@kollak01 SMALLER turbo, actually. The turbo they are using is trying to flow too much air and its at the left side of the map at surge. A smaller turbo will move flow to the right.
Turbo617 1 day ago
@Turbo617
also interesting. i know nothing about mapping a turbo setup.
kollak01 1 day ago
ok so I finally found out what compressor surge is: a region in the turbo map where airflow is unstable, thus boost pressure can rise above it's stable maximum, then fall back down. When pressure inside the compressor housing drops, manifold pressure is higher, causing backward flow into the compressor housing, and therefore compressor stall!
rowanationer 4 months ago
Surge isn't dangerous as long as it is corrected soon. It's not going to kill your engine as soon as you hear it, stop freaking out.
joffeloff 4 months ago
yeah basically the map on that turbo is wrong for the application. this person needs to map a turbo before they just do the old slap on method like everyone else.
titan56l 4 months ago
dolphin stylez
Oddish08 4 months ago
a skyline with max 300 Hp? not a race car :/
xiaoandsidekickjonah 4 months ago
Why would the air flow rate compressor side decrease the turbo RPM like it is here? This must be something to do with the turbine side, either stalling flow, or something fishy going on with that wastegate.
rowanationer 5 months ago
@rowanationer no its because each individual turbo is engineered to move a certain amount of air and when it reaches that maximum point the air in the system becomes more unstable and the turbo cannot keep it compressed so it keeps trying to come back out the inlet even tho he is wide open. remember there is no physical connection between a motor and a turbo its all done with fluidynamics. and the exhuast gases just cant spin that turbine side and faster
jasoncarney5886 5 months ago
@jasoncarney5886 Yeah I think it's just over-spooling isn't it? Higher RPM than the turbine or compressor are designed for, so flow conditions in one or both of them are being disturbed, which temporarily reduces boost until it spools back up again.
rowanationer 4 months ago
The comments on this crack me up people like why would you want your blow off valve shut!! haha why wouldnt you!! when you get old enough to own a car hows about you just take the bov off completely leave a big hole for the pressure to get of, good luck even getting it started mate hahaha
Poser12345678910 5 months ago
It's funny seeing everyone post..poor motor, poor motor..when the only thing compressor surge is harming is your turbo..
RsBl0gger91 5 months ago
Poor motor
CASSINOx 5 months ago
Is that an R33 base model?
aznkid221 6 months ago
This video needs to be viewed like 6 million more times!!!
bmxguy08 6 months ago
tO EVERY LITTLE FUCKER OUT THERE ON YOU TUBE LAND PLEASE WATCH THIS VIDEO BEFORE YOU GO WRITING DUMBASS COMMENTS ABOUT COMPRESSOR SURGE ON VIDS WITH EXTERNAL GATES AND SCREAMERS ETC ETC.. FUCKING ETC!!! =]
SoWhnDoUThnkUrGrwnUp 6 months ago
thies shop mechanics are stupit..i bet thats a fucked up turbo set up..prolly need a new turbo and better header..bet if you adjust the throttle you can get a quick fix..something is not balanced properly..could come from overdriveing/overdrawing your car...lol i bet that fluttering sound throws em off
3208chris 6 months ago
WOOHOO! Look at all the people being bench mechanics! I love saying shit without evidence and getting angry when people don't believe me!
Guess what? If you have an issue (this video case in point) your never going to fix it without successive tests to ensure you know what is truly happening. Engine development for people without an accurate computer model is largely trial and error. Sometimes you blow a motor up... its call learning.
TDFStudios 6 months ago
what fucking douchebag mechanic did you have working on this sexy bitch .r u fucking nuts?!?!?! the asshole tells you its comressor surge or confirms the shit after doing that 5 or 6 times to your turbo and motor?keep this tape asevidence just incase your shit fucks up.if that was my car and i would have seen that shit i would have shoved a turbo up his ass and twisted it.and only if this was you doing this....your fucking stupid
GERIDIUS 6 months ago
@GERIDIUS i think its their car dude
etuhs350 6 months ago
@etuhs350 then in truth they dont deserve the fucker let a real professional mechanic fix it
GERIDIUS 6 months ago
This is exactly what I was feeling and hearing recently till i spun something downlow. I surgeg cause I used a small hot side on higher then normal boost.
If engine temps go up, wouldn't you notice it at the IAT sensor readings???
mac1mike 6 months ago
Ya on throttle surge is terrible. Wish it didn't exist :s Fuck off compressor surge! We don't need you here!
abdulios 6 months ago
The solution is a bigger turbo or different compressor wheel or housing. You need to match the compressor curve so when you take your engine displacement and work out mass flow, you want to run up the most efficient part of the compressor map. It can be tricky to match it perfectly. You want to be there to avoid high-speed surge like this and also to avoid making too much heat that will make the engine knock and blow up. The circular rings on a turbo comp map are efficiency.
dale116dot7 6 months ago
@dale116dot7 Actually, the solution is a SMALLER turbo.
Turbo617 1 day ago
@Turbo617 Oh yea, I knew that; surge line on the left. Not enough flow, too much pressure. Brain thought != typed message.
dale116dot7 1 day ago
300hp max from that setup..???????
13Anko 6 months ago
@ohai2u The problem is that the compressor stalls because of too much pressure.
There are some solutions, because the high pressure can be reduced (with the same airflow) by some ways.
You can change the int.cams to improve airflow (the same turbo with the same airflow with better cams, you have the same mass of comp.air at less T and P), or change the comp. casing (different A/R), or changing all the comp.side, or, IF the WG opens a lot(power wasted), you can change the turbo for a bigger one.
dadoVRC 7 months ago
@ohai2u~ U dont match the engine to the turbo. U match the turbo to the engine. If u want proper/thorough answers to these questions.... then buy a book or 2 about Turbo systems!. And dont try to get answers from dimwits on the internet.
marek0086 7 months ago
yep no dout about that vid...... if you watch close you can see the pipes expand at the coupling points.\, takes alot of boost for that to happen. lucky you didnt blow the engine
williamcrabtree 7 months ago
Wow @ some of these comments. You guys realize, this kind of compressor surge has nothing to do with BOV's, right?
Passing the surge limit for the compressor causes this. Not because you close the throttle.
The surging was at WOT, for crying out loud.
racerxj220 7 months ago
now thats what kills the turbos ! the only risk driving with some flutter, is getting laid faster :))
RABBITSMOGET 7 months ago
The Synchronic line of products are available by registering at SYNAPSEENGINEERING*COM/CART, use referral code YOUTUBE when you register and be eligible for limited edition designs and market pre-releases
synaptic1 8 months ago
open te fucking Blow off valve before u blow that turbo into your dumbass face
r3demption91 8 months ago
"The BOVs were closed during the testing"
Well THERE'S your PROBLEM.
Under what circumstances would you ever want to run your engine with the BOVs forced shut? I hope you're aware that unless your engine can outclimb the turbo to infinity, you're always going to surge. Are you really engineers? If so, are you some of the vast majority of MEs that never turned a wrench before getting their BS in Mechanical? Because if you are, you dipshits scare me.
dafunkmonster 8 months ago
@dafunkmonster~ u dont know what you're talking about!... u think this "surging" was caused by a closed BOV???
This has everything to do with compressor-wheel aero-dynamics!!..... and NOTHING to do with BOV's.
marek0086 7 months ago
@marek0086 actually it's caused by a ineffective wastegate/ port size
ajbauto 6 months ago
keep doing it why dont ya
DanDanNissanMan 8 months ago
NO NO NO NO NO NO NO NO NO ....nice ad for your buiZ..im sure people are FLOCKING to synapse engineering after watching this debauchery
sqweekyknee 8 months ago
Sounds unbelievable.
kylef369 8 months ago
stupid question. but im just learning about cars. and why is the turbo doing that??
jsk8r13 9 months ago
@jsk8r13 im not sure why it sounds like the throttle body isnt big enough for all that boost so it causes back pressure
other kinds of compressor surge is when your throttle body snaps shut and your blow off valve doesnt release it it causes the turbo to spin backwards making a "cool" sound
guccamain 8 months ago
@guccamain air can flow barckward the compressor during surge, but the wheels spins in the right direction.
dadoVRC 8 months ago
@dadoVRC well the thing is when you let off the gas thats when comp surge happens but as u open the throttle it begins to spin forward
guccamain 8 months ago
You guys are surprised when you came across compressor surge? There should be no positive outcome nor data from doing this test other than to test how long the turbo/motor will last with a forced shut BOV. UNLESS you guys don't know that a closed BOV will caused compressor surge.. u shoudn't be drifting to begin with.
Jayeeyee 9 months ago
Comment removed
Jayeeyee 9 months ago
BB turbos can take this alot better then journal bearing but its still hell on it.
This will destroy the thrust washer having a shit load of exhaust back pressure post turbo will do the reveres of this and cause thrust wear on the other side of the of washer. This is the leading cause of turbo failure on semi trucks. They never replace the 100$ muffler for a million miles and blow turbos and burn exhaust valves up.
Anyway a BOV will not fix surging on boost its a turbine/compressor sizing issue.
flyjum 9 months ago
What wheels are they?
lorby89 9 months ago
@lorby89
they look like rota D1 wheels. just have a look round. rota are the ones who do wheels styled like that. :)
lagundafire 9 months ago
how causes surge? is it because of bad tuning?
seri267 9 months ago
@seri267 No...bad quality BOV. Its too tight and doesnt relieve the pressure in the pipes,making the turbo spit the air back out through the intake side
DjayJohn 9 months ago
@DjayJohn
how? the bov/dv only lets pressure out the system when theres a vacuum manifold side,
its plain and simple, they have the boost too high and the engine cant recive all of the boost the turbo is shoving in, so theres back pressure, which i guess would activate the dv if theres a drop in pressure, but you can clearly hear the fluttering on the turbo
vikkiandbradley07 9 months ago
I know the problem. There's a cat somewhere in the engine.
BosToNsiKEsT 10 months ago
hey guys this isent good for the motor or turbo but were ganna keep on doing it
fordpride101 10 months ago
so the 'problem' was a too small turbo?
surlograsp 10 months ago
@surlograsp
No. More boost (air) than the engine is able to swallow.
blyndrotor 9 months ago
@blyndrotor no, surge occurs when the relationship between flow and pressure exceeds the value where the turbo is designed ...
With the engine a little higher speed, the turbo can (for example) run at a higher speed, and at the same pressure can provide more airflow without breaking the aerodynamic balance in its inside, and then it can run without surging.
Surge is "similar" to cavitation in water pumps, with some limits gived by the different fluids (air or water) the pumps are processing.
dadoVRC 8 months ago
@dadoVRC~ thats EXACTLY what it is!.... CAVITATION!.... great way of explaining it man.
marek0086 7 months ago
@marek0086 It is similar to cavitation, not the same thing, bacause of the totally different nature of the operating fluid, that causes different effect to the comp. (or pump, in liquids) wheel.
dadoVRC 7 months ago
@dadoVRC~ Its exactly "CAVITATION". Thats exactly whats happening.... your getting CAVITIES (pockets) of negative pressure. OF COURSE its NOT the SAME as with a heavier, thicker fluid (eg. water, oil... etc).... but thats a no-brainer!.
Yes of course, if it was pumping, say, water intead of air, the comp wheel would break apart at the first occurence of cavitation.
marek0086 7 months ago
@dadoVRC~ "intead" is meant to be "instead".
marek0086 7 months ago
Fuck me dead..she sukin like a horny blonde school girl LOL
FC3SROTA 10 months ago
lol ah i remember this happening with my old car....ah those were the days. Full tap, 1.2bar boost then, DUMP 0.8bar then back to 1.2bar. Only in the right conditions tho..had to be cold but low humidity, fucking sucked ass
Imreadingthisaloud 10 months ago
lol, You dopes think turbos making odd sounds is cool...HAHAHAHA. What idiots.
frickin ricers suck...lol
btcruz 10 months ago
@btcruz lol, You dopes think turbos making odd sounds is cool...HAHAHAHA. What idiots.
frickin ricers suck...lol
listen here you fuck first learn how to fucking type in english none of this black gangster typing with dopes or uh or shit like that second dude i bet your making fun of tuners becasue u drive a minivan with rims that are to big and a gay ass bodykit and a wing thats three times taller then the van its self third your probly also mad cause you have no life no money
anACEmw2player 10 months ago
@ btcruz part 2 to buy a really car and cause you have no girl also no one every said anything about sourge sounding cool and if u look up the word ricer you will find out wat it really means u fag so quiet talking out of ur ass and fuck off
anACEmw2player 10 months ago
This has been flagged as spam show
@btcruz lol, You dopes think turbos making odd sounds is cool...HAHAHAHA. What idiots.
frickin ricers suck...lol buy a really car and cause you have no girl also no one every said anything about sourge sounding cool and if u look up the word ricer you will find out wat it really means u fag so quiet talking out of ur ass and fuck off
anACEmw2player 10 months ago
'DANGER TO MANIFOLD'
snowskateskate 10 months ago
flutter is nothing compaired to this. exhaust housing is too small meaning engine is forcing MORE air in when the exhaust housing is at its full protential( meaning it needs a bigger housing). youtube term : ride a bmx down a hill and keep peddling, when your foot slips off that peddle and you fall off thats the feeling of turbo snaping a shaft. :D
lanster00 11 months ago
@lanster00 This is a dead-on explanation. No substitute. No MSG. This guy knows his cereals from oatmeals.
boma357 10 months ago
didn't even hit 300hp -.-
MrDubEdition 11 months ago
Thanks for the vid. It's full of infos
ERIKOMBAT 11 months ago
thats pretty crazy, thanks or the Video!
therealdeal989 11 months ago
Would a ball bearing turbo die from 15 psi compressor surge/dose/flutter? or are those 3 thing different? i got one free in on my R33 gtst when i bought it but it has standard dump valve atm, if its real bad im buyin a greddy rs from my matey on march 2nd
Horrifiedcomedy 11 months ago
this video and people in it are stupid
RainingSushi 1 year ago
so they keep testing it like its nothing.....i should kill you all!!!!
rippersdeath 1 year ago
@rippersdeath they have plenty of money to buy another turbo...u should be grateful they did this so you know what it is if it happens on your car
jhaze918 11 months ago
isnt that just because ur bov isnot working or sm?
speedytang4 1 year ago
@speedytang4 bov got nothing to do with the "on throttle surge" you are thinking about the tsh tsh tsh sound that comes when you lett off the throttle on a car with no bov/too tight bov or not working bov
nwfklan 1 year ago
lol even with the surge im pretty sure it was consistantly getting 400ish HP and like 380 TQ. Hell yea dude fix that shit and let us hear her scream.
xaIkyrie 1 year ago
Ouch!!
deeznuutz55 1 year ago
that sounds terrible
chaisson38 1 year ago
thats eds p.o.s. skyline! LOL
nicholasliz0420 1 year ago
big turbo + small intake flow = turbo surge/staling !!!! do to small exshaust housing/turbin wheel and big compresor wheel turbo hit to much boost at to low rpm !!! its spool up to fast :(((
Tomek2581 1 year ago
Geez thats bad! I thought this was gonna be surge when comming off the throttle, but this is actually really bad when it surges on WOT/load and takes away from the performance of the car.
Better get that fixed with a bigger exhaust wheel
HEKTIC458 1 year ago
@HEKTIC458
Theyre two different (with similar result) things. Surge is this, the gay noise you hear when people lift of the throttle without a BOV is Compressor Stall.
Funboymark 1 year ago
looks like someone's got the hiccups 0:52 to 0:57 try making it hold it's breath for 10 seconds.
dillondsaid 1 year ago 31
Thankyou so much for posting the real compressor surge that people should be worrying about. I am having this problem to some extent, and it only surfaced after I installed upgraded intercoolers. Could they be restricting the flow so much that I know get compressor surge (only in high gears going up hill at low rpm when going full throttle).
jlgroovetek 1 year ago
nice ricer wing.
kotovsyndrome77 1 year ago
This has been flagged as spam show
@kotovsyndrome77 oppinions are like assholes everyones got one
jnewbon00 1 year ago
@kotovsyndrome77 All i got from that was Herp Derp.
Bobbit323 1 year ago
suckin so hard its whistlin lol
iaevilmonkey 1 year ago
Hearing that makes me cringe.
ComptonAssDaniel 1 year ago
Turbo: "i cant take this anymore...chirp chirp chirp..!"
hybridpeformance 1 year ago
bigger turbine housing will fix that in a pinch.
bugman540 1 year ago
Must be good having the money to not care about doing that to the motor and turbo over and over again..
350drifting 1 year ago 98
@350drifting someones jealous, not your money so dont put a mouth in it. plus hes educating us
nizmo3fiddyz 1 year ago
@nizmo3fiddyz
You're going to insult me for my comment?
Yes i would be a bit jealous to have the money to be doing that. I'm pretty sure everyone would...?
I'm not sure how doing it over and over again is education. If you do it once to get the sound, then you know. You don't need the same sound over and over again to get the point across. The fact that you're trying to argue with that, is beyond me knowledge.
350drifting 1 year ago
@350drifting they could of only done it onece with many cameras going
unaccurate 6 months ago
@350drifting Or they did it once with multiple cameras......
jdswiney 5 months ago
@350drifting well maybe you should get some money so you can perform test like this that is informative to people.
e2blade 5 months ago
ok i have a tial 50mm and it sounds like compressor surge but then again my motor runs hard and stong how can i differenciate whether or not its compressor sugre
boosted01gsr 1 year ago
at 0:45 20$ to whoever dares put his finger down to his knuckle in there and 50$ if its his dick!
tibbracing1 1 year ago
wtf dude that aint good
soxrulz 1 year ago
Maybe a boost controller can help here?
krystalized0 1 year ago
Note the surge line on a compressor chart. Video poster probably already knows this well though.
needleonthevinyl 1 year ago
that'd fuck ya off something chronic.
nathanMETALbangBANG 1 year ago
too much boost :)
HeavyGhost 1 year ago
Thank you for the video, didn't know what compressor surge was first, but now i know. Thanks!
Znitso 1 year ago
lol that turbos shakin like a mofo. And is comrpessor surge the same thing as flutter?
chillincruisin 1 year ago
Its time for a bigger turbo, lol.
Londil 1 year ago
Another fix would be get a american car and/or block then slap a supercharger on there. Problem sovled
steelraptor 1 year ago
@steelraptor oh and he can go fast and turn left!-____- even tho nascar is n/a haha
weekendwarrior58 1 year ago
@weekendwarrior58 Just buy a corvette, then destroy, and you look great when not racing, not just another Honda or Toyota faggot.
steelraptor 1 year ago
@steelraptor i can understand tht since u hate gettin smoked by 4 bangers
boosted01gsr 1 year ago
@boosted01gsr Actually my S10 with an All American 2.2L 4 Cylinder is supercharged like a madman and will eat any import on the strip. My diesel truck is tuned/turboed and can throw 9,500lbs of weight faster than most imports I've met. So to answer your questions, that never happens
steelraptor 1 year ago
You're running such a bigass turbo for only 300hp? No wonder you're getting surge.
Turbo617 1 year ago
this made me cringe
mikebra21 1 year ago
whos D1 R33 is that?
tommyking253 1 year ago
I just want to take a rope around that tow hook and haul it into my garage!!!!!1
chasterb8er 1 year ago
they must really not like the owner or something if they say you can ruin the motor or turbo and keep holding it on surge haha.
kamilpolniak 1 year ago
u know wat i love about it. how u keep doing
good job on fuking it tht bit more lmao
TheWestcoast69 1 year ago
when this happened was your boost gauge like going crazy as well?
DDRcrazy88 1 year ago
If this car was loaded up on a strip and not a dyno the compressor surge would be no where near as bad, it is only because the revs were static and even sounded like they were decreasing at one stage.
Also why the fuck would you keep the throttle open when it is doing this? Great way to kill the turbo bearings.
roflex2 1 year ago
How did you keep the rpms from rising? Is this a steady state dyno?
xturbot3x 1 year ago
Do they make an anti surge compressor housing for that particular turbo? If not I would consider using a slightly smaller trim number or port the head and get some more cam in it.
xturbot3x 1 year ago
This has been flagged as spam show
theres like so many possible reasons of compressor surge.....
its because ur bov opens a little late....
ur running a straight pipe....
ur turbo is to small for ur engine....
my supra is having the same problem....
but i think i need a air senser from a tundra to calculated the air thats going in my turbo
swat3067769 1 year ago
needs a bigger AR
Lucz0r 1 year ago
It sounds like the compressor wheel is coming loose
dbell4308 1 year ago
HOLY TORQUE!
Jessekrs123 1 year ago
put an hks bov that will fix your problem
SPANKY714AHM 1 year ago
@SPANKY714AHM it won't. the vehicle is under load.
cash1jz 1 year ago
shjt tht sounds bad.
But tht spoiler on the r33 looks massive!! i love it!
kiensane 1 year ago
that is deadly for sure bro
zombietx 1 year ago
sounds like a helicopter
dragonbrain111 1 year ago
dont make your turbo angry
SoLSamuraibloodblade 1 year ago
lol this is the sound that some aussies like to hear from their VL bombadores!
tunelliner 1 year ago
I love all the noob comments. Use a CSC blower instead. Adjust your Blow off valve... Sigh.
Thanks for posting this up though btw, everyone confuses boost onset surging with surge occuring during throttle closure.
Nettikturbo 1 year ago
if it's so fucking bad why the fuck do you keep doing it jack ass?
jakep2007 1 year ago
@jakep2007, its called documentation, troubleshooting, and testing dipshit.
mediarocker543 1 year ago
@mediarocker543 yeah i think we got the point theres compressor surge. it isn't fucking rocket science, but yet maybe to you it is because you're under educated and ignorant. shut the fuck up bitch.
jakep2007 1 year ago
@jakep2007, Its rocket science to many who dont know about cars. "Shut the fuck up bitch" :)
mediarocker543 1 year ago
@mediarocker543 and someone who owns a car like this and doesn't know how they work should be ashamed of them self.
jakep2007 1 year ago
@jakep2007, true, but this is a demonstration for the masses. So people who wanna get into tuning, or who are backyard mechanics can know what destructive turbo surge sounds like. Not only that but this is useful documentation for companies.
mediarocker543 1 year ago
needs a new turbo! maybe one with an anti surge compressor.
j00hz 1 year ago
So what did you do to fix it?
Burke68 1 year ago
and thats why i rock a centrifigual blower. All the simplicity of a supercharger, with all the boost of a turbo :)
halohadel 1 year ago
@halohadel im interested, tell me more
machetero1 1 year ago
@machetero1 @KrazyKuul111 well, there are three cent. supercharger companies out there: Paxton, Vortech, and Pro Charger. Paxton has been around since the 60's, but procharger is the best because their superchargers are self contained. What I mean by that is no extra oil lines to and from the oil sumps and oil pumps from the engine.
The only drawbackwith a centri. blower, boost is made with rpm.
halohadel 1 year ago