RB20DET stock fuel pressure regulator?

Discuss the RB20, RB25 and RB26 series engines.
jmill145
Posts: 4
Joined: Wed May 06, 2015 7:48 pm

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Ran a search but came up dry so here goes.

Picked up a hatch with a half-finished RB20 swap that's missing a few annoying pieces. Most notably the FPR and the dipstick. Will the FPR off of a KA work? Or anything else? It's a completely stock motor so I'd rather not even mess with the NISMO unit. I assume all I need is 34-43 PSI?


ItzGenX
Posts: 1204
Joined: Wed Sep 04, 2002 7:46 pm
Car: Smoke Purple 95' S14.5. Powered by the "Iron Man".
Location: Gulfport, MS
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You need a 1:1 pressure regulator. I am unsure if the KA is a 1:1, but I THINK it was. If you are in doubt, you can always just get a stock one from other various nissan cars such as the z32. The stock regulators can't really cope too well with higher aftermarket fuel pumps, so an adjustable one is almost required if you are running anything an uprated fuel pump with high idle pressures. The fuel pressure without the vacuum line hooked up should be at 3 bars (43.5psi).


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