Electric fuel pump?

My holley e-pump is mounted below and beside the tank. Below the oil filter there is space between the frame.

quote:

Originally posted by mikee:
My holley e-pump is mounted below and beside the tank. Below the oil filter there is space between the frame.

Did you have to replace the brass Holley 180 fittings with a a 90 degree fitting? If I place it on the frame, looks like the fuel hose will pinch as I curve it into the Holley fittings. ??

...See my picture on the thread at this sight; 'Holley fuel pump Install'. In THIS Column. Notice I have mounted the Pressure regulater directly to the output of the pump, this way, only low pressure is traveling through the longest hose. This does NOT 'hurt' the pump as there is a bypass built into it. DO NOT run these pumps (BLUE) With-Out a regulator as they produce 14-15 pounds of pressure and the Holley 'Float Needle Seats' can only control 6-7 Pounds Maximum...

Thanks for the tip Marlin. I bought a regulator but wasn't sure what setting I should use!! THANKS!!

JK......I've got mine below the tank, under the oil filter area, in that triangular shaped section of frame.

BTW.......I'm using the HolleyRed pump which does NOT require a regulator, as its held to 7-7.5lbs. (and also checks on my carb mounted pressure gauge).......... WORKS EXCELLENT!

Great info guys!! Man, this board ROCKS!!

thanks.

Josh

p.s. kaama - I bought a black Holley a few years ago that I've been traveling with (just in case).. I forget the PSI rating but it's the strongest one Holley sells..so I'm pretty sure I need the regulator Marlin mentioned. Thanks.

A note for those considering an electric fuel pump because they can't hunt down a mechanical pump with enough pumping capacity, there is a 120 gph mechanical pump on the market for $62. That's 50% more capacity than the Holley mechanical race pump, and equivalent to most electric pumps.

http://allstarperformance.carshopinc.com/product_info.p...oducts_id/4552/40263

This is my recommendation for safety's sake. The mechanical pumps are also quieter and easier to install, no re-engineering involved.

just more info for you, so you can make an informed decision.

Your friend on the PIBB, George

What is the oil pressure of a cranking Cleveland?

If it's too low, you can't wire the fuel pump for an oil pressure cut-off switch. The motor wouldn't start!

George,

I see your no longer an 'Old' Pro. How good does that feel?

Michael

Mr Gasket makes a safty switch #7872. I mounted it in the unused fitting by the oil filter. Holly makes a switch too, but it's larger in diameter and may not fit. I mounted my pump low in that same triangle box area, but I made a bracket for it. I brazed some nuts onto heavy gauge steel then riveted the plate to the box section. I also soldered ALL connections, don't trust crimp or push on spade connectors. They will corrode and leave you stranded.

So with the electric pump off of the bottom of the tank, are we installing a cartridge filter before the pump ? Because the fuel there giving us could have debris in it. The pump is made to push not pull so will this restrict the flow to the pump if the cartidge is too small.

I have thought of trying to install a new Mustand submersible pump in the tank. Any ideas on that ??

Ron

Hey guys!

The safest way to run a fuel pump is mechanically. With the existance of a 120 gph mechanical pump, I don't know why anyone would go through the trouble & noise of an electrical pump. That's last time I'll bring it up, but I do feel strongly about it.

I have found the Holley oil pressure switch they sell for shutting down the elec fuel pump to be a P-I-T-A. Of course, that was almost 20 years ago. It was a source of fuel system gremlins. I hope the Mr Gasket switch is better.

If you are plumbing a fuel pump to draw from the bottom of the fuel tank for the first time, I would run a fuel filter between the tank & pump for the first tank of fuel, then remove that filter and install a new filter on the discharge of the pump, where it belongs. A fuel pump will pass small debris without problem, it's the large stuff that's been sitting in the bottom of the tank for 30 years you want to keep out of the pump; low flying birds, Jimmy Hoffa, dead mackerel, the Loch Ness monster, that sort of stuff.

FI system fuel pumps put out too much pressure for a carbureted system, I've never payed attention to what the maximum inlet pressure of a Holley fuel regulator is, but I'll bet it's not anywhere near the 45+ psi of a FI system fuel pump. The 2 types of systems just don't mix.

Yes Michael, it is wonderful to no longer have the word "OLD" associated with my "karma" level! LOL! Now I'm a sus-tain-ing-pro, just like you!

Mom would be proud!

Your sustaining friend on the PIBB, George

Cranking oil pressure isn't an issue. The safety switch has a lug that connects to the starter solenoid so the pump always runs with the key in the "start" position.
I used the stock fuel pickup tube. With the pump mounted low there is a siphon effect making sure the pump is "primed". As long as you don't run out of gas there shouldn't be an issue.

Thanks for the explaination racerdave. I wasn't exactly sure how that would work.

Michael

Early prototype set-up.

John3613,

Handsome setup. Will it be visible once the tire is on, or will it be behind a splash shield?

Michael

Thanks Michael,
This is my intial mockup, on the finished version the heat shield is modified and an easily removable cover allows the filter element change, yet covers the fuel system completely. The cover can be removed with the tire in place for inspection.
I have sent an article to Dave Adler complete with pictures for the next PI magazine. I could post more pictures but I know Dave prefers some exclusivity, so this post will be the "tease"

Gives us something to look forward to in the next issue!

Michael

Fuel pumps are very poor at suction of fuel. El pumps are more problemitic at this then mechanical units. As in past posts Jack, mentions that trying to suck the fuel up the stock pickup leads to pump failures down the road. Some of the posted pictures solved the problem by mounting the pump up high. Another option is to tap into the drain plug on the bottom of the tank. I was able to go to a local fitting house and find the right threads on a 90 into an AN fitting. The part was from parker valve.

Noise is an issue. Try to isolate the pump via rubber isolators.

Roverltd,

what threads were those on the bottom of the fuel tank?

By the way, your install job, tubing work is very good.

your curious friend on the PIBB, George

(sans bike)