@WZW1982 Basically, there will be a vacuum pipe that will re-circulate some of the exhaust gases that to through the turbo, once these go through the turbo and are re-circulated, as there is no blow off valve they get put back through the turbo and the chattering noise is the air hitting the turbo fins, as the dump valve isn't there to dispose of the excess air. Although a waste gate will get rid of some of the excess air, although an external on is advisable.
#1 That's a considerable amount of boost creep you got there...#2 No bov on a rotary = bad news for ur fins.#3 Ur cutting the life of the turbo in half.
@965minimoto actually slightly better than when i had twin turbos. Its because you have to commit to using boost, instead of the twins always feeling like they are there. The single turbo stays dormant (in simple terms) until you give it gas. As a result, less gas consumption when daily driving. :-)
@ssonosk lol the mpg question? i dont keep track of the actual gas mileage. when you have a modified car, it doesnt matter much anymore lol. Its better than stock, whatever those numbers are. :-) if... you dont boost it. except for the time i road tripped to deals gap, im boosting it around corners. maybe if i type alot, people wont notice i dont know the answer :-P
Depends on what wastegate you're running. If you don't have a dump valve or sbov then all the excess air that's built up in the turbo that it doesnt need, will be dealt with by the waste gate, that what gives it the chattering noise sound. You don't have to have a dump valve, but if you aren't going to have one, then I'd suggest a better waste gate that can handle the excess air pressure/boost pressure that you're running for the turbo, otherwise it will damage it.
@eFFiGia17 Isn't the waste gate on the exhaust side of the turbo? I am not quite following how the waste gate would vent the output/engine intake side of the turbo.
@feluke so what? whats your point? maybe he was coming up to a light and was clutching in/going to neutral because he would be breaking to a stop. i do that most regularily daily.
Honest question here... On my FD I ring out every gear to 8.5-9k and it keeps pulling. I see here you take it to ~6k and let off... Were you just showing us something specific or were you pushing it and thats just where you shift normally? There's just 2k+ more of usable powerband left...
I'm inclined to assume you're just demonstrating the two things... but I had to ask.
@TEDDERAMA i am a girl when it comes to high RPMS. i didnt have a go pro at the time so i was being careful :-D it was basically worse than texting and driving
@emerciv Did you install the water injection as a buffer or a means to increase power? That's the only thing left for me to buy on mine. I expect 500whp on pump with my setup and would like to gain some up top with the cooler intake temps while spraying.
@TEDDERAMA It served as a safety buffer to use pump gas at 15+PSI. my turbo is rated for 23psi and that would require racing fuel to achieve. It really stabilizes the combustion temperatures not the intake temps like a methanol would.
@emerciv There is an E85 (no water or meth injection that I'm aware of) FD here in Vegas pushing around 640whp. That might be a tad extreme, but seems to run fine everytime I see him and it is his daily.
I've always been curious about the water injection. Just a good tuning buffer if you're stuck tuning with 91 octane? Or is it a crutch if you haven't built the shit out of the engine yet? I'm still shocked by how many people try to hit big numbers on basically STOCK engines.
over simplified: anything that cools increases hp potential. meth cools intake allowing you to cram more in. water cools combustion temps so you can increase boost without as much detonation.
There are some fascinating stories about the military doing water injection testing for their plane engines.
as many people have already said, BOVs are a waste of money on ball bearing turbos. as for journal bearings, as long as you have a 360 degree thrust bearing it will not be harmful to your turbo if you do not run a BOV.
Wow, ok the sound "surge" is not really spinning the turbo backwards, rather it is trying to. Moreover choke does 10x the damage, like ic you ran a gt65r on stoking ports. The issue really is the damage done to the weakest part of the turbo, the compressor fins. After a couple hundred miles it will start eating up the knife like edge on the compressor wheel, while not dramatically at first, but soon enough it will change the ability of the turbo to spool in low rpm & will cause turbulence down
@FormulaVeeRacer1200 depends on how he's drivin it, either way it goes both can cause a piece of that blade to break off and be sucked back in to the intake & cause major damage from there on..
@ssonosk exhaust fumes mostly. a little NOx, CO2 H2O and HC. haha. well ive never dynoed it, but its a stock ported block running 15 PSI. the turbo is capable of 23 PSI if i get the 3 bar sensor installed. anyone else have an idea of what i would put to the ground?
@AtzengamerMemphis I feel like i would install a BOV given the opportunity to have one welded in. I feel like it is detrimental putting extra wear on the ball bearings.
@AtzengamerMemphis A blow off valve is pointless in most cases man. It can just help regulate airflow better. When you get up to bigger power, then its needed, but i mean you dont need one for daily use. You dont even need one for stuff like autocross really unless your making big power. I can put a duckcaller on my STi and get the same power if not more haha.
I know, but i used to weld it shut and get better performance, i just upgraded to gt35r o i put one on but, i used to have gt30r and drove it for three years and in some cases, i had an upwards of 30 horsepower increase without it.
Rumor has it of course.... Id say its completely harmless and that the air pressure in the Pipes and I/C is just pushed out the compressor that is STILL running the right direction because the Engines putting enough flow through the exhaust side to keep it spinning and the wooosh woosh woosh is air passing through the compressor wheels blades against it.... lol long reply but meh my .2c
The rumor is that when the throttle closes, the Boost pressure in the Intercooler and Piping is forced back out through the turbo causing it to reverse spin making the woosh woosh woosh woosh noise, but if you think about it, if the turbo was spinning reverse by the air pressure pushing back out the turbo compressor, then the exhaust wheel would ALSO be spinning backwards, stopping the exhaust flow.... If you stopped the exhaust flow the engine would stall
the ride is sick but she should realy chek out a bov you dont want that surge to damage that beautiful turbo of yourse. but never the less thumbs up all the way from Auba drag race.
@sebzero2 open 3" stainless downpipe. open mid pipe. Apexi N1 cat back. I run a high flow catalytic converter when i want to quiet her down. Which is never... lol
@Sefveron i havent dynoed it. i am running a supra fuel pump and custom stainless braided lines from the fuel pump to the front. gutted the stock fuel filter and installed a modular unit. i also rewired the fuel pump to a relay to deliver it optimal power.
All you retards running around to every video of turbo cars without bov's saying they will damage it need to pull your heads in. Its more blow back than it is compressor surge. Real compressor surge that damages engines happens when the ENGINE IS UNDER POWER. So full boost and you hear the cho cho cho cho. Thats when it does damage. If you have a turbo that is damaged by not running a bov, it was never going to last long anyway.
@saintluke87 aha. so when the compressor is overwhelmed by the pressure wave striking it, it is not a temporary surge? Do your homework before trying to bash people, please.
@proudbugowner thank you for the technical description of blowback there. I like your dramatic choice of words. Ive yet to see a turbo fail ONLY because it didnt run a blow of valve. Its always something else. Ive been involved with turbo cars for a while now, race and street cars. i ran 1.8 bar for over 2 years on the same turbo with no bov ever fitted without a drama. As i said, if your turbo is destroyed by running no bov, it was going to blow anyway. Thanks for the tip about my homework
@saintluke87 Well I've seen plenty of them fail only because of this and yes, it really does matter if it will fail in 5 months or 5 years. Physics along with mechanical engineering dictates that surging the compressor is something to be avoided. Now if you want to play it cowboy and risk not running a BOV or other relief system, do it yourself and don't take others with you. After all, you think you are smarter than most car manufacturers that fit OEM recirculation valves today. Well you arent.
@Shockern003 lol. yes i do. its like a documentary. if it blows, i can speak from experience and share that. i would gladly weld my HKS on, but the one guy in the area broke his hand. Ive been too lazy since. ;-)
almost every single turbo setup i see has that abrupt angle piping from the turbo foward and almost every one i hear has god awful compressor surge on it too.
Pffft no BOV. BOV's are the biggest gimmick ever. To the guys whingin bout no BOV get over it. Or go get some equipement & do some leak testing on ur so called top shelf brand of BOVs. They are all no lubricated...non ringed piston type design with brass inside of alloy (two different metals with different rates of expansion) running hot air through them = fail
The only valve to date that I know works is a toyota supra valve type (like a cylinder head) and is sealed with a weak 6psi spring
that surge is real bad for the turbo ... please please please get a BOV on there asap , want to see more of this car man . and im not up north to help fix it . LOL.
@WZW1982 Basically, there will be a vacuum pipe that will re-circulate some of the exhaust gases that to through the turbo, once these go through the turbo and are re-circulated, as there is no blow off valve they get put back through the turbo and the chattering noise is the air hitting the turbo fins, as the dump valve isn't there to dispose of the excess air. Although a waste gate will get rid of some of the excess air, although an external on is advisable.
eFFiGia17 2 days ago
no bov/ compressor surge is bad for bearings/ compressor wheel
SuperKar1005 2 days ago
Comment removed
SuperKar1005 2 days ago
why no bov is there any benefit to doin that?
Smashedspartan 1 week ago
realy quick spool up (y) that turbo on a 4g63t .. spools so slow :X
TinkoMollov 1 week ago
I have boner right nowlookingatpictureof kristen dunst
timeisthekiller 2 weeks ago
Is getting that much blow-by bad for the turbo?
xzachx2112 2 weeks ago
surge
Mr0KKK0 2 weeks ago
Come on man you gotta go up to 8 grand lol. Nice car btw
greenlight2600 2 weeks ago
#1 That's a considerable amount of boost creep you got there...#2 No bov on a rotary = bad news for ur fins.#3 Ur cutting the life of the turbo in half.
BoostedVtec 3 weeks ago
what hotside is on the turbo? t3? honestly think that this car should be pulling harder...
ShakotanFC 1 month ago
how meny miles to a galon do u get.
965minimoto 1 month ago
@965minimoto actually slightly better than when i had twin turbos. Its because you have to commit to using boost, instead of the twins always feeling like they are there. The single turbo stays dormant (in simple terms) until you give it gas. As a result, less gas consumption when daily driving. :-)
emerciv 1 month ago
@emerciv lol you didn't answer the question D:
ssonosk 3 weeks ago
@ssonosk lol the mpg question? i dont keep track of the actual gas mileage. when you have a modified car, it doesnt matter much anymore lol. Its better than stock, whatever those numbers are. :-) if... you dont boost it. except for the time i road tripped to deals gap, im boosting it around corners. maybe if i type alot, people wont notice i dont know the answer :-P
emerciv 3 weeks ago 4
@dmurrayyy
Depends on what wastegate you're running. If you don't have a dump valve or sbov then all the excess air that's built up in the turbo that it doesnt need, will be dealt with by the waste gate, that what gives it the chattering noise sound. You don't have to have a dump valve, but if you aren't going to have one, then I'd suggest a better waste gate that can handle the excess air pressure/boost pressure that you're running for the turbo, otherwise it will damage it.
Basically the b
eFFiGia17 1 month ago
@eFFiGia17 Isn't the waste gate on the exhaust side of the turbo? I am not quite following how the waste gate would vent the output/engine intake side of the turbo.
WZW1982 1 month ago
Wow that sounds cool. Too bad its being destroyed!
willmon8 1 month ago
No bov is bad for your turbo isn't it? The excess air would push againt the turbine wouldn't it? Compressor surge I think
dmurrayyy 1 month ago
compressor surge much?....I'm curious to know what the flashing light on you dash is =\
rollzon20z 2 months ago
Now that's how to kill a turbo ='(
KingBazia 2 months ago in playlist Fler videoklipp från emerciv 2
No bov no bueno :/
vitaravic 3 months ago
I got one question.
WTF every time your on power down to slow down you press clutch or put it in neutral?
feluke 3 months ago
@feluke ever owned a moded rotang bro? you don't engine brake rotarys....
rollzon20z 2 months ago
@rollzon20z why not...?
KuostA 2 months ago
@feluke so what? whats your point? maybe he was coming up to a light and was clutching in/going to neutral because he would be breaking to a stop. i do that most regularily daily.
KuostA 2 months ago
lol... you just cut your turbo's life in half
leakedfromtv 4 months ago 2
Honest question here... On my FD I ring out every gear to 8.5-9k and it keeps pulling. I see here you take it to ~6k and let off... Were you just showing us something specific or were you pushing it and thats just where you shift normally? There's just 2k+ more of usable powerband left...
I'm inclined to assume you're just demonstrating the two things... but I had to ask.
TEDDERAMA 4 months ago
@TEDDERAMA i am a girl when it comes to high RPMS. i didnt have a go pro at the time so i was being careful :-D it was basically worse than texting and driving
emerciv 4 months ago
@emerciv Did you install the water injection as a buffer or a means to increase power? That's the only thing left for me to buy on mine. I expect 500whp on pump with my setup and would like to gain some up top with the cooler intake temps while spraying.
TEDDERAMA 4 months ago
@TEDDERAMA It served as a safety buffer to use pump gas at 15+PSI. my turbo is rated for 23psi and that would require racing fuel to achieve. It really stabilizes the combustion temperatures not the intake temps like a methanol would.
emerciv 4 months ago
@emerciv There is an E85 (no water or meth injection that I'm aware of) FD here in Vegas pushing around 640whp. That might be a tad extreme, but seems to run fine everytime I see him and it is his daily.
I've always been curious about the water injection. Just a good tuning buffer if you're stuck tuning with 91 octane? Or is it a crutch if you haven't built the shit out of the engine yet? I'm still shocked by how many people try to hit big numbers on basically STOCK engines.
TheRotaryDemon 4 months ago
@TheRotaryDemon thats pretty impressive.
over simplified: anything that cools increases hp potential. meth cools intake allowing you to cram more in. water cools combustion temps so you can increase boost without as much detonation.
There are some fascinating stories about the military doing water injection testing for their plane engines.
emerciv 4 months ago
wow... thats just terrible without a bov... talk about fucking something up in the long run...
Lsvtecbenny99 4 months ago
What is the fc comander for?
MegaAndroidboy 4 months ago
looks like youre at 17 psi
im jealous
fawbishballa 5 months ago
as many people have already said, BOVs are a waste of money on ball bearing turbos. as for journal bearings, as long as you have a 360 degree thrust bearing it will not be harmful to your turbo if you do not run a BOV.
RotaryKnight 6 months ago
Nice rota mate :)
MercOhra 6 months ago
What is your compression turbine MM size?
Tj1056 6 months ago
Wow, ok the sound "surge" is not really spinning the turbo backwards, rather it is trying to. Moreover choke does 10x the damage, like ic you ran a gt65r on stoking ports. The issue really is the damage done to the weakest part of the turbo, the compressor fins. After a couple hundred miles it will start eating up the knife like edge on the compressor wheel, while not dramatically at first, but soon enough it will change the ability of the turbo to spool in low rpm & will cause turbulence down
YoureNext1187 6 months ago 12
@YoureNext1187 wow. well said
emerciv 6 months ago
@YoureNext1187
What a load of crap, all my cars haven't had any BOV's and the turbos are still going strong. You got any proof do back up what you're saying?
pisana 6 months ago
@YoureNext1187 true compressor surge is not from not running a BOV......
rotor13 6 months ago
@YoureNext1187 id be more worried about the bearing than the compressor blades
FormulaVeeRacer1200 4 months ago
@FormulaVeeRacer1200 depends on how he's drivin it, either way it goes both can cause a piece of that blade to break off and be sucked back in to the intake & cause major damage from there on..
canthony1019 4 months ago
@YoureNext1187
ha ok riddle me this what's the output of your motor? :o
ssonosk 3 weeks ago
@ssonosk exhaust fumes mostly. a little NOx, CO2 H2O and HC. haha. well ive never dynoed it, but its a stock ported block running 15 PSI. the turbo is capable of 23 PSI if i get the 3 bar sensor installed. anyone else have an idea of what i would put to the ground?
emerciv 3 weeks ago
@emerciv man i want a rx7 so hard. Does yours backfire?
ssonosk 3 weeks ago
00:56 get a BOV
CtrlBotCentral 7 months ago
@emerciv Doesnt it destroy the Turbo with the Time when you dont have a BOV? I mean the Sound is awesome, but doesnt it slow down the turbospool?
AtzengamerMemphis 7 months ago
@AtzengamerMemphis I feel like i would install a BOV given the opportunity to have one welded in. I feel like it is detrimental putting extra wear on the ball bearings.
emerciv 7 months ago
@AtzengamerMemphis A blow off valve is pointless in most cases man. It can just help regulate airflow better. When you get up to bigger power, then its needed, but i mean you dont need one for daily use. You dont even need one for stuff like autocross really unless your making big power. I can put a duckcaller on my STi and get the same power if not more haha.
TEPerformance3 7 months ago
@TEPerformance3 its not about the power its about the reliablity... no BoV kills turbos
Tj1056 6 months ago
I know, but i used to weld it shut and get better performance, i just upgraded to gt35r o i put one on but, i used to have gt30r and drove it for three years and in some cases, i had an upwards of 30 horsepower increase without it.
TEPerformance3 6 months ago
@AtzengamerMemphis it doesn't hurt it at all! that's just a dumb rumour. bov's are a waste of money when you have a ball bearing turbo
RPS13DRlFT 6 months ago
@RPS13DRlFT I didnt know man :P sorry for asking <.<
AtzengamerMemphis 6 months ago
Rumor has it of course.... Id say its completely harmless and that the air pressure in the Pipes and I/C is just pushed out the compressor that is STILL running the right direction because the Engines putting enough flow through the exhaust side to keep it spinning and the wooosh woosh woosh is air passing through the compressor wheels blades against it.... lol long reply but meh my .2c
konamimgs2 7 months ago
The rumor is that when the throttle closes, the Boost pressure in the Intercooler and Piping is forced back out through the turbo causing it to reverse spin making the woosh woosh woosh woosh noise, but if you think about it, if the turbo was spinning reverse by the air pressure pushing back out the turbo compressor, then the exhaust wheel would ALSO be spinning backwards, stopping the exhaust flow.... If you stopped the exhaust flow the engine would stall
konamimgs2 7 months ago
the ride is sick but she should realy chek out a bov you dont want that surge to damage that beautiful turbo of yourse. but never the less thumbs up all the way from Auba drag race.
MrShawnevictor 7 months ago
awesome ride yo. It is official, ext wastgated 7s sound amazing lol
xXgofalldownXx 7 months ago
2 dislikes got a v8 in their FD
guevodeplomo 8 months ago 13
get a synchronic bov, it stops the compressor surge
drifterboyy93 9 months ago
@drifterboyy93 i think pretty much any turbo would get ride of his surge...
Tj1056 7 months ago
how can you run reliably with no BOV?
JDMforever11 9 months ago
isnt that sound at the end called compressor surge? look in the s2k in my vids, it did a sound pretty much similar XD
Dani01c 11 months ago
@Dani01c Yea its compressor surge. he has no blow off valve.
ALake2244 10 months ago
what does power fc let you control ?
keanupimp11 11 months ago
@keanupimp11 almost everything related to the engine. fuel amounts, timing of sparks, basic boost controls. etc
emerciv 11 months ago
@emerciv ohk sweet as dude thanks !
keanupimp11 11 months ago
@emerciv what exhaust you have on that?
sebzero2 10 months ago
@sebzero2 open 3" stainless downpipe. open mid pipe. Apexi N1 cat back. I run a high flow catalytic converter when i want to quiet her down. Which is never... lol
emerciv 10 months ago
Nice work man, what kind of power are you getting running 15 psi? also what kind of fuel system you running?
Sefveron 11 months ago
@Sefveron i havent dynoed it. i am running a supra fuel pump and custom stainless braided lines from the fuel pump to the front. gutted the stock fuel filter and installed a modular unit. i also rewired the fuel pump to a relay to deliver it optimal power.
emerciv 11 months ago
All you retards running around to every video of turbo cars without bov's saying they will damage it need to pull your heads in. Its more blow back than it is compressor surge. Real compressor surge that damages engines happens when the ENGINE IS UNDER POWER. So full boost and you hear the cho cho cho cho. Thats when it does damage. If you have a turbo that is damaged by not running a bov, it was never going to last long anyway.
saintluke87 11 months ago
@saintluke87 aha. so when the compressor is overwhelmed by the pressure wave striking it, it is not a temporary surge? Do your homework before trying to bash people, please.
proudbugowner 10 months ago
@proudbugowner thank you for the technical description of blowback there. I like your dramatic choice of words. Ive yet to see a turbo fail ONLY because it didnt run a blow of valve. Its always something else. Ive been involved with turbo cars for a while now, race and street cars. i ran 1.8 bar for over 2 years on the same turbo with no bov ever fitted without a drama. As i said, if your turbo is destroyed by running no bov, it was going to blow anyway. Thanks for the tip about my homework
saintluke87 10 months ago
@saintluke87 Well I've seen plenty of them fail only because of this and yes, it really does matter if it will fail in 5 months or 5 years. Physics along with mechanical engineering dictates that surging the compressor is something to be avoided. Now if you want to play it cowboy and risk not running a BOV or other relief system, do it yourself and don't take others with you. After all, you think you are smarter than most car manufacturers that fit OEM recirculation valves today. Well you arent.
proudbugowner 10 months ago
you're an idiot. It will blow hahaha.
what a waste of a nice turbo.
RELOADED0000 1 year ago
No BOV...compressor surge, thats all stop argueing bitches. btw it will hurt turbo
colsh 1 year ago
I love the dedication your putting into your car. Im an Rx7 fan myself and i do respect all your videos keep up the good work man!!
Rx7Fanatlc 1 year ago
you guys are dumb, you think he doesnt know what not having a bov does?
put up some more videos dude.
Shockern003 1 year ago
@Shockern003 lol. yes i do. its like a documentary. if it blows, i can speak from experience and share that. i would gladly weld my HKS on, but the one guy in the area broke his hand. Ive been too lazy since. ;-)
emerciv 1 year ago
@emerciv weld it on you lazy ass
have you bin driving the car ever since?
Shockern003 1 year ago
Your turbo hates you. Save the turbo and put a blow on it
Turbomister2 1 year ago
In Australia we put a 3 inch pipe on the turbo inlet and then the pod filter. And u call it a Dose pipe.
KPAracing 1 year ago
almost every single turbo setup i see has that abrupt angle piping from the turbo foward and almost every one i hear has god awful compressor surge on it too.
paikmendez 1 year ago
Pffft no BOV. BOV's are the biggest gimmick ever. To the guys whingin bout no BOV get over it. Or go get some equipement & do some leak testing on ur so called top shelf brand of BOVs. They are all no lubricated...non ringed piston type design with brass inside of alloy (two different metals with different rates of expansion) running hot air through them = fail
The only valve to date that I know works is a toyota supra valve type (like a cylinder head) and is sealed with a weak 6psi spring
Jarmezrocks 1 year ago
That is a nice rip off of my water injection kit lol
Cool video! ;-)
riceracingdonmega 1 year ago
having no bov will fuck your turbo over time!
DJOZZA 1 year ago
These rotary's have a nice sound to them.
eclipsegsx765 1 year ago
personally i like the bov's.... they make cool hissing sounds lol.
dnamick17 1 year ago
why no BOV get one on their! nice ride though
sti4lifer 1 year ago
Sounds good, what kind of exhaust?
tobyweb 1 year ago
@tobyweb Open midpipe. Apexi N1 end pipe
emerciv 1 year ago
Man your intake temps are cold!
shmacklepap 1 year ago
@shmacklepap That's probably the Blitz FMIC. That beast keeps it cool
emerciv 1 year ago
@emerciv intake temp 35? what was your ambient temp?
icashADDICT 1 year ago
that surge is real bad for the turbo ... please please please get a BOV on there asap , want to see more of this car man . and im not up north to help fix it . LOL.
twistymcslide 1 year ago
@twistymcslide i will. its like a train wreck, i cant look away. i must have a death wish. lol
emerciv 1 year ago
Comment removed
Tj1056 1 year ago
nice
bigclay50 1 year ago