4-5.5 psi facet fuel pump question

[svEmerald]

Hello, while I would prefer to support our hosts here, the cost of shipping and importing the electric fuel pump system to me here in Canada is cost-prohibitive. I can get the parts I need locally, but the only Facet pump I can locate is the higher pressure one that Moyer specifies for Catalinas (because of the longer fuel run, if I understand correctly). It is the 4 to 5.5 PSI model.

Can I use this pump in a "normal" installation, where the tank-to-carb run is only about 4' total? Or will the pressure be too high and I risk overpowering the carb?
Thanks

[Dave Neptune]

No the additional should not in any way hurt the small Zenith carb. The little bit of extra pressure is just wasting the additional ability of the higher pressure pump.

I would think that if your supplier has a Facet connection they should be able to get you the smaller pump. Did you ask?

Dave Neptune

[svEmerald]

Thanks, Dave. I did ask, and no, they apparently couldn't (blank looks). They had some of the other Facet pumps (the cube-shaped ones) but I'm comforted by the fact that this is the one Moyer specifies. I just wasn't sure if it would do harm.
If (when!) I get a chance to pick up one from Moyer (if my boat and I ever make it across the border), I'll get the lower pressure version and keep this as a spare.

[Sam]

I'll give you a couple thoughts. If memory serves me well I have a 1.5-3.5psi Faucet pump and my fuel pressure gauge mostly reads a steady 2.5psi bulk head mounted w/about 3 ft run and the carb runs fine. I have always read 1 to 2 psi is needed - you may be too force full. I am not sure what is available locally but I have had real good luck running smaller older tech Facet "cube" style electric pumps [3 in 40+ years - must be bulk head mounted higher than carb lower than tank]. Their catalog has many psi combinations. A friends boat needed a pump quickly and bought from an auto parts store a little cylindrical engine mounted chinese" Mr. Good" or something and its going on 10 yrs. Personaly I would not go that cheap but I would make every effort to keep in nominal 2-2.5 range. others may have different experiences w/pumps kicking on and off and possible "surges".

[Sam]

I will differ to Dave's expertice and logic - can't go wrong following it.. My concern was the 4psi lower limit not the higher 5psi.

[Dave Neptune]

If the additional pressure is a worry there are inline reducers available too. Most performance places should carry some and even a good parts house. You can dial in your pressure with one.

Dave Neptune

[Al Schober]

Agree with Dave.
An inline check valve will drop the pressure a bit. Kinda like using a diode to drop the voltage a bit. But try it without it - suspect you'll be fine.

[svEmerald]

Thanks everyone for the responses. I will go ahead and try it, and report back once I can say if it worked or not!
J