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Rb20det Just Installed Nos Need A Little Advise

kilabee

By kilabee,
in Engines & Forced Induction

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kilabee Apprentice

kilabee

Posted
Posted

Okay here's the setup,

just installed NOS +Aeromotive regulator in my RB20det Just a SAFC 11.

im trying to get close to the max power I can get with this setup,

~stock injectors

~about ten pounds of boost on a stock rb25 turbo uprise manifold (think it may go up by about 2 lbs while nitrous is activated)

the jetting size I'm thinking about is .034 nos &.020 fuel (premium pump gas)for a 50 shot.

~I need to know if im using the appropriate jet size and can i use a larger shot ??????

annd could i use the cam sensor to retard and advance the ignition a little to suit...

PLEASE ADVISE..................

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2rismo Grand Master

2rismo

Posted
Posted
Okay here's the setup,

just installed NOS +Aeromotive regulator in my RB20det Just a SAFC 11.

im trying to get close to the max power I can get with this setup,

~stock injectors

~about ten pounds of boost on a stock rb25 turbo uprise manifold (think it may go up by about 2 lbs while nitrous is activated)

the jetting size I'm thinking about is .034 nos &.020 fuel (premium pump gas)for a 50 shot.

~I need to know if im using the appropriate jet size and can i use a larger shot ??????

annd could i use the cam sensor to retard and advance the ignition a little to suit...

PLEASE ADVISE..................

I'd kick off on .030 and .020 but realistically your 34/20 could work too. Make sure you know what your fuel pressure is (should be about 3bar and stable through the rev range) and that your bottle temp doesn't exceed 950psi.

Using the CAS to back the timing off will work but it's a bit agricultural and will make the rest of the tune-up shitty. I'd try and pick up a PowerFC, have it tuned and the use the ignition trim function whenever you're running the gas.

As for the stock injectors working with that turbo and boost, I have no idea.

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STATUS Grand Master

STATUS

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Posted

i'll check my refference, but as an example a r34 na will take 75hp without any timing adjustment with the right jet sizes (i find the recommended jet sizes run way too rich), the rb20 turbo should take 75-100hp providing you have sufficient fuel pressure.

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kilabee Apprentice

kilabee

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Posted (edited)

thanx fellas....

I'm usin a AEM wideband

an already trim the injectors by about -9% at certain points of rpm

but i heard that trimming fuel using a SAFC2 would automatically advance ignition .....

I'm not 100% sure about this.............

Edited by kilabee
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