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Need Help From You Skyline Gods !

Chris_GTR26

By Chris_GTR26,
in Engines & Forced Induction

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Chris_GTR26 Rising Star

Chris_GTR26

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heya guys,

just want to know.. im thinking about taking my car to wakefield and i know that the stock r33 gtr turbos being cast wheels are very shit and tend to go when pushed..

my question is, what is a safe amount of boost to run 10 psi ??

its a stock engine.. just filters cat back exhaust apexi PFC. everything else is stock.

thanks in advance for your help. i just dont want to do any damage to my car.

thanks chris.

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MrStabby Grand Master

MrStabby

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just want to know.. im thinking about taking my car to wakefield and i know that the stock r33 gtr turbos being cast wheels are very shit and tend to go when pushed..

my question is, what is a safe amount of boost to run 10 psi ??

The turbine wheels are ceramic and yeah they go pop. Mine did at 13psi with a very conservative 11.5 AFR tune, at Wakefield. Fortunately i could drive home - i hear to tow back to sydney is ~$800.

Anyways, the more boost the more risk, and if you're unlucky the motor can be destroyed when they go. So yeah, just run them at stock boost, and try and get some steel wheeled replacements as soon as you can. FWIW the stockers are supposed to be rebuilt every 100,000kms.

Chris_GTR26 Rising Star

Chris_GTR26

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i have a high flow cat. 14.5 psi is what it is running.

this is going to be my first taking it on the track so i wont be going too crazy. i think ill just run it at 10 psi. and let it cool down every 15 mins ( as its 15 mins on the track at a time )

n1 oil pump and acl race bearings have been fitted also.

so yous are saying 10 psi will be safe ?

Beer Baron Grand Master

Beer Baron

Posted
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there is no way to guarantee what is safe and what isn't. I have run one R32 GTR on stock turbos at 14psi at lots of track days without problems. on the other side I know of plenty that died on their first track day at stock boost.

it's a risk. you might be fine, you might not. there is not way to tell. sure running less boost should improve your chances so keep it to 10 or 12psi would be a good idea. an oil cooler is a good idea too on any GTR going to the track and a proper oil pressure and oil temp gauge is handy too as the stock ones are pretty hopeless. keep the revs sensible (no need to rev a mild GTR past 7500 or even 7,000 really on track) and keep an eye on temps and you SHOULD be fine. no promises though.....

Chris_GTR26 Rising Star

Chris_GTR26

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there is no way to guarantee what is safe and what isn't. I have run one R32 GTR on stock turbos at 14psi at lots of track days without problems. on the other side I know of plenty that died on their first track day at stock boost.

it's a risk. you might be fine, you might not. there is not way to tell. sure running less boost should improve your chances so keep it to 10 or 12psi would be a good idea. an oil cooler is a good idea too on any GTR going to the track and a proper oil pressure and oil temp gauge is handy too as the stock ones are pretty hopeless. keep the revs sensible (no need to rev a mild GTR past 7500 or even 7,000 really on track) and keep an eye on temps and you SHOULD be fine. no promises though.....

ahh sweet thanks for the info... like i said its my first time on the track i wont be going to crazy as i will only be just learning the limits of the car. ill run about 12 psi.. and as i have no oil cooler or anything. i will just take it easy and enjoy myself.

thanks for all the info guys ( just cross your fingers for me ) lol...

im going to wakefield on the 29th i think.. the end of this month, so ill let use know how i go.

thanks again for the help !! :cool:

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