Jump to content
SAU Community

Need Help From You Skyline Gods !

Chris_GTR26

By Chris_GTR26,
in Engines & Forced Induction

 Share

Recommended Posts

Chris_GTR26 Rising Star

Chris_GTR26

Posted
Posted

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.

Link to comment
https://www.sau.com.au/forums/topic/283780-need-help-from-you-skyline-gods/
Share on other sites
MrStabby Grand Master

MrStabby

Posted
Posted
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

Posted
  • Author
Posted

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
Posted

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

Posted
  • Author
Posted
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:

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      Mistakes were made, my R34 Story

      By GTSBoy · Posted

      Nah. You need 2x taps for anything that you cannot pass the tap all the way through. And even then, there's a point in response to the above which I will come back to. The 2x taps are 1x tapered for starting, and 1x plug tap for working to the bottom of blind holes. That block's port is effectively a blind hole from the perspective of the tap. The tapered tap/tapered thread response. You don't ever leave a female hole tapered. They are supposed to be parallel, hence the wide section of a tapered tap being parallel, the existince of plug taps, etc. The male is tapered so that it will eventually get too fat for the female thread, and yes, there is some risk if the tapped length of the female hole doesn't offer enough threads, that it will not lock up very nicely. But you can always buzz off the extra length on the male thread, and the tape is very good at adding bulk to the joint.
    • Duncan
      Mistakes were made, my R34 Story

      By Duncan · Posted

      Nice....looking forward to that update
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      Neg, the top one is actually for the front. The sizes are 18x10.5 +18 and 18x11 +32.   I measured many times but I'm sure I'll have problems as this is the thread for problems.
    • Duncan
      Mistakes were made, my R34 Story

      By Duncan · Posted

      Just one thing; tapping tapered threads is tricky. Taps are always tapered and you would generally run it as far as you can, but with a tapered thread you have to stop much sooner otherwise the wide part of the taper will run in too far and you will have to thread the sensor in too far too as well (possible that it will never make a good seal) BTW nice wide wheels, I guess the top one is for the back!
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      Welp, good to know. Will have to wait awhile until steady hands with drills and taps are available. In other news, these just arrived! I will weigh them for posterity. Edit: 11kg each (or 10.9/11.1 depending on what my scale decides over multiple tests, the 18x11 don't seem to weigh noticeably any more than 10.5)  
×
×
  • Create New...