Nice Safe boost for RB20DET

[Skyrine-Dave]

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

[Skyrine-Dave]

This is on an R32 Silvertop RB20DET too...

[Bl4cK32]

ive got a highflowd on an rb20 too. Its set on 16 psi for high, can run 19 i'm told but 16 is fine

[Ronin]

I run mine at 1bar with rb25 turbo, ive had no trouble with it, still have stock cooler too. That will soon change though.

[R32-GTS]

I run 18psi on ah i flow no drama's . Make sure u got enough fuel though

[Skyrine-Dave]

nice nice

My current hi flow is sitting on 11psi now

looking to upgrade to a larger turbo and run 1bar or so.. maybe up to 18psi.

fuel should be ok with GTR spec injectors

[Fast31]

depends greatly on the tune, i have run 20 psi through mine but make sure its not too lean

[cobo_11]

I have been told by the guys at AVO turbo world that Nissan don't recommend going over 12psi on a stock RB20DET engine and turbo, etc.

[bbenny]

Cobo thats only with the stock turbo as they fall apart at anything over 12psi - mind you i had my stocker running 16psi everyday for a year and never had a prob

[cobo_11]

a stock RB20DET turbo!?

[bbenny]

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.

[Skyrine-Dave]

how much power are you pulling now bbenny ?

was looking at a 2530, but might also have a TD06-19c lined up.

[bbenny]

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]

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?

[Skyrine-Dave]

its either 12:1 or 14:1 cant remember exactly.

[TTT]

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.

[Skyrine-Dave]

well i think its probably on 12:1 then... i remember seeing a 14 flash up on the autronic.

tho i have never heard my car ping at all. Which is a good thing