aftermarket fuel pump from a Mustang?

[Smooth Criminal]

Hi

I bought a BMW 318 1991 and the car stalled a day after 'cause of the fuel pump

I need to change it, I don't know a lot about BMWs but would it be wise to put in a fuel pump that isn't BMW? an aftermarket Mustang fuel pump in this case

[Halon]

I've seen a page of some guy who did a turbo onto his m10 (granted you have an m42 no doubt...) and he used a Mustang in tank fuel pump to help with his engines fuel greed... @_@ So I think you could do it. I dunno, talk to more knowledgable people.

[enimik]

I heard you can also use O2 sensers from a mustang?

[Smooth Criminal]

Thanks for the info

I'll keep that Mustang fuel pump in mind for the next time since I cheapened out and went for the rebuilt pump...

very disapointed...

[witeshark]

I don't think a Mustang pump would work right ghead

[BMW Lover]

i think it would let too much fuel in...its made for a much larger engine than the m42...i also have a 91 318is

[325iS]

Originally posted by BMW Lover@Sep 24 2004, 07:56 PM
i think it would let too much fuel in...its made for a much larger engine than the m42...i also have a 91 318is

[snapback]198505[/snapback]

Actually, a higher volume pump will not hurt it as long as it is a return style system; I have not learned enough about BMW's to know what type they use.

In a return style system (as used in EFI Mustangs up to 1998), the fuel is feed through the fuel rails to a regulator. As the fuel reaches the pressure set in the regulator, it blows by and is retured to the tank via a seperate fuel line where it is recycled to be used again. When using a higher volume pump, the pressure stays the same (due to the regulator). The only difference is that more fuel is cycled in a given time.

FWIW, a stock 5.0L regulator is rated at 88LPH and I am currently running a 255LPH pump.

[idanity]

i do know that your fuel pump should have about 90 psi ...

post some pics too...
and dont use the flash becuase fire is bad for bimmers. :P