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Nice Safe boost for RB20DET

Skyrine-Dave

By Skyrine-Dave,
in Engines & Forced Induction

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Skyrine-Dave Mentor

Skyrine-Dave

Posted
Posted

Howdy

What would be a nice safe high boost setting to run an RB20DET on ?

i have larger fuel pump, injectors, FMIC, aftermarket ECU, 3"exh and soon hopefully a larger turbo.

what would be the max PSI to run ?

*my current turbo is highflowed, dont wanna hear about ceramic wheels etc etc*

Cheers

Dave

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bbenny Mentor

bbenny

Posted
Posted

Yep. pulled 222hp at the wheels too.

had it on that setting for more than a year driving it everyday and no problems, i know a few others doing the same without dramas.

although i now have a HKS2530. but ive still got the original turbo in my garage and it has zero play in any direction and all the exaust blades are in perfect condition.

bbenny Mentor

bbenny

Posted
Posted

mmmm TD06 is nice!

but as i use my car everyday the 2530 is perfect.

im currently making 278hp at the wheels (210rwkw) at less than 1bar but im hitting boost cut. should make over 300rwhp once i get the ECU chipped or something, just run out of money now... and the HKS turbo doesnt reach its efficiency band till 1.2bar!

so im hoping it will do ok. the beauty of the 2530 is that it comes on boost very early and i think that it actually has more pull off boost driving than my std turbo did, so all round it is a really sweet turbo for everyday, anymore power and i will have serious traction issues as it struggles already.

ask Roy about the TD06, i think he has a 20g on an RB20 and is very happy with that, im gonna have to check it out sometime soon.

TTT Grand Master

TTT

Posted
Posted

hey..

when you say hi flow.

what exactly are the specs?

who built it?

did the place that built it tell you what HP the turbo is now good for?

anyway, if you have the air:fuel mixtures right, then like the guys have said, up to 20 psi is probably good.

I know you said you have pump and gtr injectors.. but have you had it dyno'd to see what the mixtures are like at the moment?

TTT Grand Master

TTT

Posted
Posted

I'm praying that it was 12 and not 14..

that would be WAAAAY too lean.

I've been told that a SAFE a:f ratio is about 11.5:1

but up to 12 is probably still safe...

currently mine is at 12.5:1 and that is a little lean for my liking.

I've got the GTR pump ready to go in so that should help.

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