Fuel Pump

[stu e]

Hi
Could anyone suggest what fuel pump I should use on a RV8 3.5, I've been having a few problems which I believe are fuel related. The Facet solid state pump I have at the minute seems pretty noisey,I can hear it with the engine running sometimes, which seems a little too noisey. I also may get a bigger engine in the future and I'm sure a bigger pump would be needed.
Thanks Stu

[TINKA]

I have heard before that the solid state one is not really up to the job, personally I used to use a Carter pump quiet and never gave me any bother at all.:thumb:

[stu e]

Thanks for that.
Could anyone suggest what pressure/flow rate I should be looking for, the carb is an Edelbrock 500 and where I can buy on from.
Thanks again Stu.

[TINKA]

I think if it gives more than 7 psi the float will be over powered normally an ideal pressure would be about 5 psi but is is not the only thing to take into account flow rate is just as important.

[stu e]

Thanks Tinka

I understand that pressure and flow are equally important, can anyone tell me what sort of flow rate I should be looking for, and can I fit a pump suitable for a 3.9 onto a 3.5 without causing more problems?
Thanks Stu

[427scr]

Thanks Tinka

I understand that pressure and flow are equally important, can anyone tell me what sort of flow rate I should be looking for, and can I fit a pump suitable for a 3.9 onto a 3.5 without causing more problems?
Thanks Stu

I use a Facet red top on a tuned 3.5 with SU's.

It is well up to the flow rate, but you have to limit the pressure to 2psi or it over powers the floats in the carbs and floods the engine. You can do this with an adjustable fuel filter/pressure regulator fitted in line. You can buy these with a guage fitted. The instructions say that you should remove the guage when the pressure is set, but mine has been there for 16,000 miles with no problem at all.

I don't know what pressure you should be running on your carb, but the info should be out there on the net.

Oh, just one more thing, the Facet pumps seem to work better when they are mounted low down, near to the tank. They don't seem to like being in the engine compartment high up on the bulkhead.

Cheers.
Mark.

[stu e]

THanks Mark