Electric Fuel Pump??

coosawjack · #1 (**permalink**) 10-12-2006, 03:47 PM

Don,

Is there a recommended electric pump for a CR with a small block stroker (408)?? I have let my car sit quite a bit through the HOT summer and I have to grind it a lot to get fuel to the carb with the mechanical fuel pump!!

I remember one car I looked at had an electric pump to fill the carb(s) which allowed it to start quickly.

Why not just remove the mechanical pump and block off the mounting area on the block and use the electric one all the time??

Hope all is well at CR II.....

Thanks,
Coosawjack

Bob In Ct · #2 (**permalink**) 10-12-2006, 04:38 PM

Electric pumps are usually used with FI because of the higher pressure required. The down side to electrics is they keep pumping fuel even when the engine isn't running. This can be a bad thing in a crash.

You decide.

Bob

Curt C. · #3 (**permalink**) 10-12-2006, 08:39 PM

You can easily rig an electric pump up to a hobbs switch (loss of oil pressure) or an inertia switch to shut it off when bad things occur. I have a hobbs switch on mine, but believe that an inertia switch, or both for that matter, is the way to go. I run a Mallory 140 GPH with no problems at all. My motor makes 450 or so flywheel HP. This is a very quiet pump too. Aeromotive makes some nice products too.

HI Cobra · #4 (**permalink**) 10-12-2006, 09:39 PM

I had the same problem with starting after the car had been sitting for more
than a week. I added an electric fuel pump controlled with my last remaining unused toggle switch. I run it until I have pressure at the carb
then shut it off before I start - it works great. Problem solved for me.

coosawjack · #5 (**permalink**) 10-15-2006, 04:42 AM

Do you simply mount an electric pump before the mechanical pump and force fuel past the mechanical pump to the carb?? That seems too easy!!

If so I will get a push buttom "ON" switch that is off when released...Voila...no more grinding!!

Coosawjack

coosawjack · #6 (**permalink**) 10-15-2006, 11:16 AM

Part of my "griding" was a weak battery......I put a new one in a damn near slung the starter off on the floor!!!

Coosawjack

Ibr8k4vetts · #7 (**permalink**) 10-15-2006, 12:03 PM

Quote:

Originally Posted by coosawjack

Do you simply mount an electric pump before the mechanical pump and force fuel past the mechanical pump to the carb?? That seems too easy!!

If so I will get a push buttom "ON" switch that is off when released...Voila...no more grinding!!

Coosawjack

A electric pump need to be as close to the fuel tank as possible because they like to push the fuel not pull

edmonds007 · #8 (**permalink**) 10-25-2006, 05:39 PM

I have a Holley electric fuel pump and it has worked well until today when it suddenly stopped working on two occasions. I'm thinking it may be a short or something because it'll shut off while driving, then when I sit for 15 minutes and fiddle with everything and eventually call AAA for a tow it'll suddently turn back on. Does anyone know of anything else that'll cause a fuel pump to act this way other than a bad electrical connection?

Didn't mean to hijack your thread Coos, hope my added question is ok!

Curt C. · #9 (**permalink**) 10-25-2006, 05:48 PM

Check the brushes. They look like a small magnet attached to a tiny spring and are found near the top of the motor with the electrical conections. They are wearable items. I had to replace them in a mallory unit just the other day. Not a hard procedure and Holley should sell the replacement parts which are usually inexpensive.

edmonds007 · #10 (**permalink**) 10-25-2006, 06:47 PM

My car is about 2 years old with less than 5000 miles. I should probably get some replacement brushes to keep on hand for future use and also replace them now to rule it out. Any idea what the typical life span of a fuel pump is?

davidlee · #11 (**permalink**) 10-26-2006, 02:17 PM

I ran a Holley blue electric pump with no problems except I thought it was a bit noisey.

David

coosawjack · #12 (**permalink**) 02-21-2007, 06:06 AM

Quote:

Originally Posted by davidlee

I ran a Holley blue electric pump with no problems except I thought it was a bit noisey.

David

If you can hear your fuel pump...Your "Pipes" aren't loud enough!!!

I can't hear anything but VROOOOOM!!!!

Coosawjack

Tim Brewer · #13 (**permalink**) 02-21-2007, 09:53 AM

An electric or mechanical pump doesn't put ANY fuel into the carb when the bowls are full. Coosawjack, all you need to do, (if you arn't) is stomp the gas pedal two times befor you start your car, that's it.

Blittleton · #14 (**permalink**) 02-21-2007, 11:18 AM

Edmonds,

I use to install holley's electric fuel pump on my cars but they left me stranded several time just like you mentioned. I called holley and they wouldn't never admit in having a problem with the fuel pump. I bought a second one and it did the same thing. So I switch over to a carter electric fuel pump and have never looked back. Carter's electric fuel pump works as advertised. No more holley's for me!!!

Bill

Cobrabill · #15 (**permalink**) 02-21-2007, 12:44 PM

I wouldn't put a Holley anything on my car.
As mentioned a interrupt switch can be installed.
I would avoid the "inline" approach with the mechanical and just go with a reliable electric.If your manual diaphram ruptures,the electric will fill your crankcase with fuel.
Also it would help things if a return line is run to avoid "deadheading" the pump.Not to mention cooler fuel at the carb.