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Safe Boost R32 Gtr

Deano 1

By Deano 1,
in Engines & Forced Induction

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Deano 1 Mentor

Deano 1

Posted
Posted

hey all

Just brought my first Gtr, r32

power Fc

Nismo upgraded turbines (T25/T04B 0.64) with metal turbine blades

HKS Turbo dump pipes & front engine pipe

Tomei sump baffle

Tomei type A cams

Jun cam gears

N1 oil pump

Whats safe boost for a Rb26dett what these mods. My boost controller is a Blitz SBC - i-D SPEC - R. If im driving long in say 2nd gear. And roll on boost to 7.3-5k rpm. My boost controler says peak boost 19.5psi. when i got it set on High boost setting. on the other setting it dosent boost past 16psi.

I just dont no how much i can lean on it. I have all the recipes for the tuning it was tuned 3months ago for 19psi. But dont no i dont want any probs any time soon. just making sure you no.

Have many people boosted there rb26s unforged that high? if its high at all. whats high boost for a non forged rb26?

sorry if this sounds like a noob question. Im new the the GTR/rb26 seen.

cheers for any help

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32godzilla Proficient

32godzilla

Posted
Posted

I am no expert but 19 - 20 psi on a stock engine should be fine as long as your tune is good, i.e. not leaning out. From experience the 32's don't like being held over 7500rpm for too long, hece the semi redline at this figure.

I would of thought a stocky should be good for around 25 psi with a safe tune and a good driver?

doo doo Proficient

doo doo

Posted
Posted

Just remember the stock AFM's resolution max out at around 400-410 RWHP- Tuning res after this isn't necessarily brilliant. Tuning is the key to keeping it safe, but you'll also hit a point where the extra boost adds heat but not power.

GT-R32 Grand Master

GT-R32

Posted
Posted
Just remember the stock AFM's resolution max out at around 400-410 RWHP- Tuning res after this isn't necessarily brilliant. Tuning is the key to keeping it safe, but you'll also hit a point where the extra boost adds heat but not power.

Good point, I had not passed posting that as a 'given'. But his set up doesn't appear to have them.

Oh and budget for a rebuild at some point or another regardless, LOL.

GT-R32 Grand Master

GT-R32

Posted
Posted
sorry to hi jack thread but just a quick one.

I have stock turbos on my 32 gtr looking at bumping them up a bit i have herd that they are dodgy above 1 bar is this correct?

If they were new(er) I'd say 1 bar no worries, but since they are older there is a risk in doing that.

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