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Forum namePerformance/Engine
Topic subjectFuel pressure
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=76059
76059, Fuel pressure
Posted by DJ420a, Jun-13-04 03:58 PM
What is a normal pressure reading for a Walbro 255? The reason Im asking is because Im about to install a SFMU and I dont know guage I should get with what pressure limit. Im looking at an Autometer with a fuel pressure limit of 100PSI. Is that too high?? Thanx

DJ
76061, RE: Fuel pressure
Posted by run4cvr, Jun-13-04 05:10 PM
Originally posted by DJ420a
What is a normal pressure reading for a Walbro 255? The reason Im asking is because Im about to install a SFMU and I dont know guage I should get with what pressure limit. Im looking at an Autometer with a fuel pressure limit of 100PSI. Is that too high?? Thanx DJ


Are you running stock injectors? If so then you might want to find a gauge that reads over 100 psi.
76091, RE: Fuel pressure
Posted by Corbin, Jun-14-04 06:49 AM
The fuel pressure is entirely determined by the fuel pressure regulator (stock FPR or S-FMU). Your maximum boost and fuel injector size will determine what your maximum fuel pressure should be. I'd just buy the 100 psi model. That will be fine for low boost on stock injectors (or higher boost on bigger injectors).

Corbin

'95 ESI-T
HRC+FMIC+ETC...



Gimme fuel...Gimme fire...Gimme that which I desire
76128, RE: Fuel pressure
Posted by DJ420a, Jun-14-04 02:38 PM
Thanx guys, ecspecially you Corb, you either remember me buggn you or you are a good guesser that I will have stock injects on my turbo setup for a short period of time. Like I said, thanx guys!!

DJ
76134, RE: Fuel pressure
Posted by CrazyEclipse, Jun-14-04 05:32 PM
Originally posted by DJ420a
What is a normal pressure reading for a Walbro 255? The reason Im asking is because Im about to install a SFMU and I dont know guage I should get with what pressure limit. Im looking at an Autometer with a fuel pressure limit of 100PSI. Is that too high?? Thanx DJ


THANK YOU! I was wondering the same thing.


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