How much power will the stock internals hold?
 

Hey guys, really considering supercharging the car within the next 7 months, how much power can SAFELY be ran on these engines without pushing any limits and hurting anything?

Really it is unknown, there have been a few G37 cars pushing above 500whp and around 10-12PSI. Anything below that will probably be safe, but you will have faster wear and tear on certain items. So the internals can handle it, but other items will break down faster.

A SC or a TT kit running 8PSI with the 3.7L has shown great results without punishing the engine in a bad way which gives the benefit of great power and some longevity to parts.

yeah it was best said by other member.. "longevity depends on your right foot.."..

Awesome thanks for the input guys. I figure I'd be happy with anything over 400rwhp long as I could keep daily drivability easy and that should be enough to cut a low 12/high 11 with traction.

Z1 can definately put it in for you in GA but go ahead and call Sam if you have ANY questions..he would be more than happy to explain it all.

It seems like these engines take very well to boost as there are a number of 450rwhp+ VQ37 cars that have been running problem free for 50,000 miles or more. If you go the supercharger route, there is not really a current kit on the market that will push the envelope as far as the limits of the stock engine.

400-500whp is the super safe level, with a good tune and setup. Engine longevity is related to how hard the car is driven. But for a daily driven car I would not expect any issues.

Thats pretty awesome, id be more than happy with 400rwhp in this baby...

Is that dynojet or dynodynamics ? If its dynodynamics then I'm gonna run to the store and get a 10psi pulley for my car.

just do it

Along these lines, has there been a documented failure of a FI VQ37 yet? I know this engine does not yet have much history with boost, but a few people's misfortunes usually ends up being how we all learn the limits of an engine.

What about clutch life???

I have a G37 TT that I run right about 500rwhp, 450rwtq and it smoked the stock clutch in about 3000 miles. I am installing an OS Giken twin plate and zspeed heavy duty CSC now and should be up and running by Saturday and should hold the power just fine.

Thats crazy cause my stock clutch is lasting well. You must be doing burn outs and super hard driving. :tup::driving:
Edit: Let us know how you like the Zspeed CSC. Do you think it is going to hold up?

^ It should hold up if they replaced the failing components with metallic ones...

Why do people like getting the OS Giken clutch for street cars? I don't get it, its a pain in the *** to drive with it in traffic.

^^^^ This is the reason I have not bought a clutch yet. I want a tougher setup but dont want to lose the joy of driving the car due to getting a massive leg work out in traffic.

What about exeddy??

^^^^Guys it's called go to the gym!!!!

The Giken is actually pretty easy to drive. It's not that much firmer than stock and you can slip it to set it going as it is a dampered set-up. It's easy to start, creep over speed bumps etc.. It's not like a super high clamping force single six puck thats all grab and go.

I did put the car through it's paces, but don't beat on it by any means. It would even slip in 5th gear on the freeway if I floored it. Don't know if it matters much, but the G is quite a bit heavier as well and would strain it that much more. Regardless, the clutch was going to have to be replaced, and for the short time that I drove it, the Giken was a great alternative to stock that should last and hold.

The CSC looks beefy and should hold. It all depends on the tolerances inside of it though which you can't see. Time will tell.....

:icon18:

I will post this soon. We just installed another GTM kit. This is a stage 2 on a 6spd. The car laid down a max output at 540rwhp at 10.5 psi with cats and Stillen 2.5" exhaust. This was with a stock clutch as well. Tuning is the key on the 370Z TT. At 5.+ psi the car made an impressive 42^rwhp on our Dynojet heart breaker. The car was sent out at 8.8psi which was about 505rwhp.

I've heard mixed reviews though, some say its fine, others say the wheel is so light you have to pay attention every time you stop and go as to not stall it. Pedal feel is never really the complaint, its more about the fw.

Man 505whp at 8.8psi damn, that must be nice.

So, who's recorded the most miles with either SC or TT setup on the OEM clutch?

Prob Stormcrow's old car, Cicio drive daily now and the clutch didn't slip till it hit 580rwhp.

yeah I only have about 2500 miles on the turbo/stock clutch hahaha I dont drive it every day.

re the GTM TT on 6 speed: It's mine and the TT's and everything else are running fine thank you. Kudos to John at Z1 for the install and tune. 8.8 PSi seems to be working out fine. In the spring I'll go for the JWT clutch/flywheel and we will see what 540 RWHP feels like. Drove car from Georgia to New Hampshire and it purred. :-)