General Category > Quadrajet Carb Talk and Tips

Quality, reliable mechanical fuel pumps

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Cadman-iac:
  Looking at this Robbmc website, they're recommending that you use a vented gas cap, but they are assuming you are racing. They also mention using a "cool-can,"  and wrapping the fuel lines.
 A vented cap isn't going to work for a vehicle on the street, your vapor recovery system won't work properly.
 Wrapping the lines is impractical, mainly because on a street-driven vehicle the heat build-up would overcome any advantage wrapped lines would give you, that's a quarter mile at a time solution.
 And using a cool-can you would have to add ice every 10 miles or less.
 So what actual advantage would you have by using one of these pumps if it requires all these other tricks to overcome your low fuel pressure problem for short distances?

 I need a solution for long distances in excessive heat. Am I looking for a unicorn?

quadrajam:
My truck is a 92 s10 that was originally a 4.3 v6 with TBI. Now has a near stock
carburated 355 v8. I used a parts store replacement in-tank for the 92 s10.
The regulator is a Holly 12-887 mounted on the AC evap box. The pump outputs
 about 12-15 psi and the regulator is set @ 6 1/2 lbs. Also ran new lines while I was at it.

I slid some insulation tubing over the lines under the hood and just behind the engine
although there wasn't any issues with heat, I just did it anyway.

I ran a fuel pressure gauge on the dash for years during the mechanical pump/crappy
gas fiasco. Now there is 6 psi all the time and I finally got rid of the gauge.

There may be better choices for the pump and regulator. Not my area of expertice
but I got lucky and it worked first time. Been about 3 months & 2500 miles, no problems.

QJ

tayto:
best thing i did for my Qjet was put an intank pump in my squarebody. the fact you had an electric pump from the get go and removed it is wild.

77cruiser:
That's what I thought when I put an in tank in my Monte.

Brian B.:
RobbMc.

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