General Category > Quadrajet Carb Talk and Tips
Quality, reliable mechanical fuel pumps
Cadman-iac:
--- Quote from: quadrajam on July 08, 2025, 01:35:32 PM ---Cadman, check out revolution electronics fuel pump controller 12003.
Available from the mfg. or several other online sites. Made in USA.
about 75$. Doesn't need oil pressure logic, works from tach signal.
I have one but have never got around to installing it yet. Gonna
have to put it on the DO list.
QJ
--- End quote ---
That looks like what I need. Thanks for the tip. Since I've eliminated the ECM my fuel pump relay doesn't have a priming function, I've got to use the override switch under the dash for that, which is kinda inconvenient, although it doubles as my in-line pump switch when I have the occasional supply problem.
When going back to the in-tank pump this will come in handy. Much appreciated.
Rick
PS: sorry for the delay in responding, I've got many projects going on and only get to work on my burb during slow times.
Cadman-iac:
--- Quote from: Kenth on July 08, 2025, 12:58:32 AM ---Good luck finding a quality American product for cheap.
For cheap you get a Chinese product no matter what it says on the box.
And yes, the box may be made in the USA but the contents may not.
FWIW
--- End quote ---
So very true!
Cadman-iac:
--- Quote from: taguy4 on July 08, 2025, 09:56:12 AM ---Why couldn't you just use a Carter M4891 style mechanical pump with a Jeep Wagoneer fuel filter, which has a built in return line port? I never liked the idea of putting an electric fuel pump in the gas tank for a number of reasons, and external electric pumps have problems of their own, such as being able to put them in the best location and wiring them properly so they are safe.
--- End quote ---
My mechanical pump already has a return port, so there's no need for the Jeep/Chrysler filter, but I appreciate the tip. I have one of those filters already from when I was having issues with another vehicle with an electric pump. It beats trying to tee into the fuel line for a return.
Cadman-iac:
--- Quote from: quadrajam on July 08, 2025, 04:59:07 PM ---What does a choke indicator light do....????
I used the original key-on wire for the v6 distributor to power up the v8 HEI distributor,
electric choke and at times a fast idle solenoid. plenty of voltage for all 3.
Fuel pump is another circuit that goes through the oil pressure switch. There is no automatic
prime. I have a button on the dash for that.
Should take very little current to power a relay and choke heater....
QJ
--- End quote ---
QJ,
I should have clarified that, the choke light is actually nothing more than a low oil pressure light. I started using the oil pressure switch to run the power through for the chokes on all my carbs on older vehicles that didn't have electric chokes from the factory. I copied the system in my '81 Malibu years ago and it's worked out great. That is until I tried to ground the fuel pump relay on this burb.
Even if I could have made it work, I still wouldn't have had a priming circuit though.
Cadman-iac:
--- Quote from: quadrajam on August 10, 2025, 06:36:10 PM ---The evaporator box was just a convenient place. no other reason.
See reply's 11 and 12 for routing info.
--- End quote ---
Yeah, I caught that after posting the question, sorry about that.
I'm still looking for the ideal location for my regulator. I want it as close to the carburetor as possible, but not on the engine itself because of the heat exposure.
However mounting it on the right inner fender or on the evaporator case means that I'd have to have a flexible line between it and the carburetor. Been considering cutting out the original braided fuel hose from the lines I removed in the conversion to use for this, but doing so eliminates the possibility of returning to the TBI if I ever wanted to, (which is a very slim possibility at best).
Ideally, I'd like to find some new braided fuel hose, but I didn't want to have to buy an entire roll.
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