LS Engine on Simtester @ Costa Mesa R&D Automotive Machine

[jboydmv90]

How much for that exact engine?

[lillen300]

How important is it to have a balanced engine, and what is the benefits?

[fiatnutz]

@lillen300 -Very, it will extend the life of the engine.

[lillen300]

@fiatnutz What are the various other benefits of the balancing process?

[lillen300]

@fiatnutz What are the various other good things with the balancing process , give me some examples will the engine make less noise? will the fuel consumption be less`?

[fergus1494]

@lillen300 I dont think having a well balanced engine will effect fuel consumption much - thats more to do with combustion efficiency and port efficiency. It will (stating the obvious) reduce vibrations slightly and of course as already said increase engine life - less wear. The engine will spin more freely - but not by much.

[2jzgtejza80]

@fergus1494

Balance of engine makes engine unique. If it's not well balanced, everything is fucked up.

[kreigsmann]

simtest is genius!

its so simple but i never though of that as a way to beak in a engine.

does the rpm change on the tester for better break in?

how long does it stay on the tester?

[fiatnutz]

@kreigsmann - I slowly bring the engine up to 200 rpm and let it run there for about 30-40 minutes. You still need to do the 2000 rpm for 20 minutes once the engine is in the car and running.

[kreigsmann]

@fiatnutz in a few years i will be getting my 4.3 vortec BUILT and eventually after being fully broken in get a low boost supercharger. i dont like v8s its too much engine not enough power considering my 4.3 will eat up and stock 5.7. it will be used to pull a 12 foot trailer for the rest of my life. where can this be done and how much does it cost to be done.

and also do you rebuild engine or just perform the Simtest?

[humantestdummy]

no overhead cam bull shit

[clos19851]

that fuckers going in my 240

[madtownmadman]

Oh, I see. As the rings seat, and everything, the motor turns over easier, causing current draw on the electric motor to decrease, causing rpm to increase...Indicating some break-in has occurred. Cool. Did you develop this machine?

[XxMusclecarsxX]

4v arent better at WOT than 2v. Yes 2 valves but they are huge

[chevyman8329]

I bet that this engine with 2 valves makes a hell of a lot more power than a lot of 4 valve engines out there

[bozzen91]

Yes, but if it would have 4valves per cylinder it would be way better.

[chevyman8329]

I just like the simplicity of a push rod engine.

[dugiv]

@bozzen91 Unless they were real small then it wouldnt do jack. Look at the 4v 4.6 from ford. All those tiny valves dont make as much power as the 5.7 ls1 with 2v.

[EPzti]

@dugiv do you see what you wrote of course a 5.7l race engine is gonna make more power than a 4.6l truck engine y don't you compare engines of the same size fords 5.4l (32v) that put out 550 hp when Chevys 5.7l was putting out 405 hp (16v)

[joshnc101]

@EPzti One thing I should point out is that the 32v 5.4 is a lot bigger and heavier than a chevy 5.7 (if you're thinking of an LS1) because of the massive cylinder heads. The simplicity of the OHV v8 has worked well for GM over the years and probably will continue that way untill we're all driving electric cars. They had this debate when developing the c5 vette in the mid 90's because the size and weight/power ratio was in the favor of the LS1 OHV engine verses a DOHC v8 such as the LT5.

[EPzti]

@joshnc101 are you retarded were talking about displacement and a 5.0 32v would do better than a 5.0 16v

[fredtflail]

@chevyman8329 somebody, I forgot who makes 4 valve heads for ls1 and ls3's it supposed to add a hundred+ HP

[chevyman8329]

ill believe it when I see it

[madtownmadman]

@fredtflail That would be Arao Engineering cylinder heads.

[bozzen91]

2 valves per cylinder = CRAP!!

[SIRHC45]

@bozzen91

eh, opinion

i love my push rod motor

[racernate02]

Yeah, the old 2 valves per cylinder sure is crap. That must explain how a 500 ci American designed V8 can make 8,000 HP. I have yet to see a 4 valve even sniff that territory.

[NSX86R]

Well as they say, less is better.

[FJoeForty]

@racernate02 You're talking about nitro numbers in top fuel, that only last a few hot runs before engine tear down. I am a GM Master Tech, and pushrod valvetrain with two valves per cylinder is disgusting 1920's crap.Sick of these white haired dickheads coming in the shop, ZO6 jackets,chewing the fat about their goddamn Corvette...like it's a Porsche or something. I am tired of working on these over hyped, over priced, pieces of shit. 32 valve Ford 302 with TiVCT! American craft to be proud of!

[bobwatters]

@FJoeForty i like the way u think b/c two valve is old school beyond bealife and it will be gone eventualy and the companies that dont know how to build a good 4 valve will be out of the game when that happens

[BEBNC1]

@FJoeForty You must be referring to VCT capabilities to actuate the values to give somewhat better fuel economy, otherwise they are not better engines. Huge oiling issues, way more rotational mass in OHC, when chain wear becomes an issue and timing valuve interference is slightly disrupted that OHC is a ticking time bomb. They are heavier, bigger, use 1/3 more oil, more complex cooling to stop those massive heads from overheating. Both engines have advantages and disadvantages.

[FJoeForty]

@BEBNC1 Not all overhead cam is an interference design. Reciprocating mass is more of a mechanical burden than having three extra cams rotating. Look up the weight of a gen IV smallblock versus their DOHC aluminum, six bolt main counterparts. This is like debating speed density throttle body injection versus mass air flow multiport. Those six extra injectors are a ticking time bomb!

[FJoeForty]

@BEBNC1 It is better in every way. VCT allowed you to not complicate the intake with a sooty EGR and it does more than saves fuel, it makes your valve train overlap and duration angle change. You like having a shitty Idle because you are stuck with the cam you installed? It's not a green, tree hugger thing. It's a performance developed by Formula 1 racing.

[BEBNC1]

@FJoeForty Joe, I have a 06 SOHC VCT 5.4. It is a horrible engine for towing and has had serious cam phaser issues, ford mechanics told me that this is a serious issue in ford VCT engines and is a more than common problem along with VCT actuator solenoid and pcm problems. They told me in general alot of "cheap" parts are in these engines hence the mountainous problems in these engines. Grass is always greener on other side, i've talked to two ford master mechanics and they like ohv better.

[BEBNC1]

@FJoeForty They said its 3:1 ratio of problems in SOHC VCT 5.4 vs the old SOHC 5.4 and replacing more engines than they have ever had to replace. Also have an 06 LQ9 that 190k miles that out performs my 5.4 six ways from sunday with better mpg and NO PROBLEMS other than a new alternator. GMs LS series race is race developed (Pratt Miller/Katech) and are damn near indestructable (World racings engine of the year) and gives outstanding mpg and reliability. History speaks and chevy's is better.

[BEBNC1]

@FJoeForty I hope ford has addressed some of these problems in the 5.0, if not, 5yrs down the road people will be having, serious, serious, issues with these engines. And this engines has TiVCT and ford hasn't even gotten SOHC VCT right yet.

[FJoeForty]

@BEBNC1 The malfunctioning actuators and components for variable valve timing and/or lift.... have plagued all manufacturers once, Toyota had sludge problems within the orifices, Nissan has software glitches, and the pulse width modulation in the solenoids revealed that stainless steel pintles were not lasting as long as the hardened steel. Sounds like I shouldn't assume Ford has their act together. Well shit, I guess this superior technology can only be trusted from the Germans and Japanese.

[BEBNC1]

@FJoeForty Joe, I'm not try'n to argue. I love ford and chevy. I know what ford is trying to do and it is great. I have owned both with minimal problems until i bought the 5.4 VCT. I thought i just got a lemon and come to find out my problems are common problems across the board. GM has gotten ohv about as good as you can get it, but it will have to evolve with demanding restrictions. I know what you are saying about ohv, and vct is beautiful on paper but we still have a ways to go =/

[copleygsxr]

@racernate02 Check out NRE on here

[2jzgtejza80]

@racernate02

They make that power using everything but not technology. Massive heavy 14-71 Roots blower at 75psi + Nithromethane fuel, 24-32 spark plugs, 8 independent fuel pumps (each bigger than 1 in LS7)... that's why....

and also every part of Top Fuel engine including block are forged. NELSON RACING ENGINES are capable construct DOHC type of Top Fuel engine, but that would be expensive. NELSON already have 500 CUI DOHC producing over 1500 hp in NA trim and 2500+hp S/C or T/C.

[inteligentvtec]

@2jzgtejza80 on a top fuel engine the rods are aluminum not forged steel. forged steel cant take the shock of nitromethane, they have no give. the aluminum actually allow a bit of twist and flex so they dont break. the block is also alluminum, with steel sleeve's they literally drop in, which take no time to swap. but ya dohc is way more efficent, but when you start cramming that much air into an engine forget about trying to be efficent cuz then you have to burn sooo much fuel to keep it cool.

[2jzgtejza80]

@inteligentvtec

They was made from titanium before, today using dur-aluminum alloy, only al-alloy that can endure high stress.

Yes, block and head are billet machines Al-alloy, sleeve's are ''cast in block'' made from tempered ductile iron (better cooling and lubricating than steel). Every part of the engine is forged, aluminum, steel or titanium, except sleeves, are cast. Even they using copper gasket.

[fergus1494]

@2jzgtejza80 Anything is capable with money mate. Why use a more complex and more expensive system when a simpler and more reliable system has already been developed? And when something goes wrong on the simpler system its much easier and faster to find and fix. There are engines around using heads designed off the boss 429 hemi heads that make 2000hp NA. The extra weight up high, the more complex system with more moving parts really hasnt got an advantage under 9k rpm.

[2jzgtejza80]

@fergus1494

Like I said before, OHV or OHC, no matter, both have advs, and disavds. DOHC design was proved many times in racing very reliable. Also americans are pretty blinded when it comes in term of reliability. Reliability depends about quality of materials and how it's built. Simple system doesnt mean its more reliable. I have several examples where OHV engine failed in racing. Old Ford V6 OHV, than many 4cyls OHV , even many V8 SBC's. Also same is with OHC.

[2jzgtejza80]

@fergus1494

There's no 429CUI engine producing 2000bhp NA, not even bulit by NRE nor ProStock class. It's impossible even with desmodromic type of valve actuation.

800CUI engine needs to rev 10,500-11,000 rpm to reach 1500bhp NA. Pushrods are not reliable at such a high speeds as OHC (pneumatic valve control - Formula 1)

[fergus1494]

@racernate02 4 valves are only because its lighter to get the same size valve area.. your opening and closing two smaller valves instead of one large. I personally feel the advantage of this is nil below consistent use of 9+ thousand rpm. Plus the extra costs, more moving parts and more complex designs i think 4 valve engines shouldnt be used in motorcars.. you shouldnt need to spin an engine past 9 because of the accelerated wear. A 2 valve hemi engine would be fine for most applications.

[MrGuvEuroman]

So what is the Best way to break an engine in?

Some say gentle load low revs others say hard and lots of load?

Can you settle this discussion please which is the right way? : (

[bobwatters]

@MrGuvEuroman dude if ur askin the best way to break in an engine its allways gonna be goin easy on it never jump the shit out of a new motor u gotta let everything set before u start putting stress on them

[3made1]

what are you doing this for ???

just to brake it in or what ???

is it to seat the rings ??

just like to know ..

[highdeserthater]

kinda both. check that it moves well, break in, seating pieces in.

[ls6guy]

cool

[AndrewEG]

Is that a OEM oil pump or a Mellings? Have you had good results with Melling pumps? Cheers John

[fiatnutz]

Yes.

[MrGuvEuroman]

John Ive got a 2007 turbo diesel. Is it bad to allow it to idle from cold on cold days to warm it up? Will it cause glazing? And the same question for petrol's? Thanks John.

[fiatnutz]

Warming them up is a good idea for both, glazing should not be an issue.

[MrGuvEuroman]

Thank you John :) My cars will be toasty now before i travel! Great vids ^_^

[junkey55]

@MrGuvEuroman its not bad but ive read in the owners manual if u let it idle for more than 2 minutes ur just waisting ur time because the way diesels are they're built for work and it WANTS to work so as soon as you get up and running u should be ready to go and put it to work plus some diesels come with a plug in on the front that keeps it warm overnight you should see if urs came with it.

[PureSPLprix]

so when they do this the motor isnt actually running off gas right, its just being turned over by something attached to the crank/flywheel or something

[lesly1220]

Thank's for post that LS video Mr.Edwards I hope you do of those in the future.