rb26 boost

Post by **RB26S30** » Wed Feb 14, 2007 3:05 pm

how much boost can i run on stock injectors and turbos. what are the sizes of the injectors

Post by **Gold Digger** » Wed Feb 14, 2007 4:37 pm

Not sure on how much boost you can run, but the injectors should be top feed 440cc high impedance.

Post by **HxC_Nismo** » Wed Feb 14, 2007 5:46 pm

the max safe boost that i was told on the stock turbos was around 18psi but you will need some type of fuel controller and a fuel psi regulator. im running tomei 600cc injectors with power fc d-jetro and nismo fuel psi regulator and im hopefully going to get my car tuned here in a few weeks and i can let you know what boost im pushing out of my stock turbos.

Post by **underground** » Wed Feb 14, 2007 6:05 pm

The problem is not the fuel system, it's the stock ceramic wheel turbos.

The factory service manual says specifically not to run the stock turbo's over 1.1 bar or 16 PSI.

I wouldn't run them even that high, as I had a local customer who is currently replacing the motor in his R33 GTR from inhaling turbo pieces when he overboosted.

The first mod I would do on a GTR block is replace your stock turbos with N1 Turbo's or have the wheels on the stock units upgraded.

Post by **HxC_Nismo** » Wed Feb 14, 2007 6:33 pm

thanks for clearing that up for me.

Post by **002-M-P** » Thu Feb 15, 2007 3:32 am

C33LaurelRacer wrote:Not sure on how much boost you can run, but the injectors should be top feed 440cc high impedance.

Actually the RB26 uses 444cc low impedance injectors....just an fyi

Post by **RB_Dreamin** » Thu Feb 15, 2007 4:01 am

why post up if you are just speculating? come on guys seriously. if you're not sure at least say you're not sure

Post by **TriniGT** » Thu Feb 15, 2007 7:06 am

Stock GTR turbos cannot take more than 1.1bar boost. Anything more than that and you run a risk of shattering the ceramic blades and destroying engine internals. I am changing out my GTR turbos for some S15 steel ballbearing turbos.

Post by **002-M-P** » Thu Feb 15, 2007 8:56 am

underground wrote:The first mod I would do on a GTR block is replace your stock turbos with N1 Turbo's or have the wheels on the stock units upgraded.

How much would it cost/where would you go to get the stock turbos rebuilt and the wheels upgraded? I have two turbos sitting here from my motor, that I have been thinking about rebuilding and selling.

Post by **Gold Digger** » Thu Feb 15, 2007 1:49 pm

002-M-P wrote:
Actually the RB26 uses 444cc low impedance injectors....just an fyi

Ok, then it's the RB20 that uses high impedance injectors then. I always get that backwards. Thanks for clearing that up.

Post by **Stealth-Z** » Thu Feb 15, 2007 2:20 pm

002-M-P wrote:
How much would it cost/where would you go to get the stock turbos rebuilt and the wheels upgraded? I have two turbos sitting here from my motor, that I have been thinking about rebuilding and selling.

Today I was at this shop dropping off a pair of Nismo R32 N1's for rebuilding. http://www.turbo-power.com/index.htmThey are charging me $375 each for the rebuild. They do have all the proper equipment. Next week I pick them up. Located in Northern California though.

They also offer multiple upgrade options.

rb26 boost

rb26 boost

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