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fuel pump to my e21 with 325 engine
Posted: Thu Mar 01, 2012 10:06 pm
by Dj_mizmo
How mutch fuel dose the original fuel pump puch?
Sorry for my bad english.
Re: fuel pump to my e21 with 325 engine
Posted: Thu Mar 01, 2012 10:07 pm
by Dj_mizmo
its from a bmw e21 323i fuel pump.
Re: fuel pump to my e21 with 325 engine
Posted: Thu Mar 01, 2012 10:17 pm
by nas80
3 bar I am 90% sure is standard pressure
Re: fuel pump to my e21 with 325 engine
Posted: Thu Mar 01, 2012 10:25 pm
by Dj_mizmo
how many LPH?
Re: fuel pump to my e21 with 325 engine
Posted: Fri Mar 02, 2012 12:11 am
by nas80
Your upgrading it? Then lph doesn't matter if the pump is good.
Re: fuel pump to my e21 with 325 engine
Posted: Fri Mar 02, 2012 8:48 am
by Duracel79
The std 323i pump does not set itself to 3 bar. It has a lockout pressure of about 7-8 bar and there is a regulator in the metering unit which sets the injection system pressure to 5-6 bar.
Flow rate from the pump is plenty for an M20B25 from an E30 with the E30's 3 bar regulator. I was running a std 323i pump for my 2.7 with emerald injection running 210bhp.
So if your pump is working correctly and not too noisy you won't have a problem using it for a 325i engine on Motrionic.
Cheers
Ben