setting fuel pressure regulator

Discuss the RB20, RB25 and RB26 series engines.
silviasgp06
Posts: 418
Joined: Mon Apr 02, 2007 1:12 pm
Car: 95 Nissan Zenki RB25 Powered

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I have a Project Nissan FPR, Sard type design. I cant find out what the fuel pressure should be set at becuase ive read people setting it from 37psi to 45 on the rb25.

this thread tells how to set static fuel pressure zerothread/214558

should i follow these instruction for setting it?(or course just with a different FP

i currently have it set to 2.8 kg/cm = 43psi

right now i have a in engine bay gauge, but will soon have a electronic in cabin gauge, along with a Wideband AEM AFR next pay check. because i really do not like having something adjustable that fuel related and not knowing how its really effecting engine operation.

also currently i seem to be hitting the Rich&Retard past 5000rpms. not sure if it really is r&r or the FPR getting to rich.

----sorry for long winded post, heres a summary:

-My fpr is set to 43psi right now, what should it be if that is wrong?-What is the correct way to set Fuel pressure? should it be set the way the link above tells ? or at engine idle of 650rpms?


240z4u
Posts: 2071
Joined: Mon Feb 21, 2005 4:47 am
Car: '95 Nissan 240SX

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Start your car, take the vac line off of the FPR and set it for 42-43psi. Put vac line back on.

Done.

Evan

Cjmartz2k
Posts: 1845
Joined: Sat May 19, 2007 1:39 pm
Car: Hunting for a '89 GTR now
Location: Okinawa, Japan

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x2

silviasgp06
Posts: 418
Joined: Mon Apr 02, 2007 1:12 pm
Car: 95 Nissan Zenki RB25 Powered

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cool thanks.


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