So I put my old 440 race motor (seriously detuned) in my daughter's street/strip car last year. Put in a new 3/8 pickup and fuel line along with a new Carter 120 gph mechanical fuel pump. Bottom line went through 2 of the pumps (first one was definitely bad) and they were not gonna work. As soon as the motor got any heat, fuel pressure would tank under acceleration to almost zero.
So I built a new electric pump system around the 140 gph Aeromotive pump. Didn't want to drill holes in the rust free California car, so I mounted it all on a new aftermarket gas tank. Pumped 109 gph through regulator and filter - good to go right? Nope!
Driving on street it would drop to 4 psi, and at times the regulator made strange noises. So dumped the Holley Blue regulator for a new Aeromotive regulator and redid some tubing per Aeromotive's recommendations. Interesting thing is that when I dropped pump voltage to 9 volts regulator pressure would go up around 1/2 psi no matter what the conditions were. No difference with the Aeromotive regulator.
Did not like the tight bend on the 1/2" aluminum fuel line from the tank to the pre-filter, so I made a 5/8 aluminum line. In order to bend the line, I had to make a 1 inch radius 5/8 bender. Worked out real well.
So I put a pressure gauge before the regulator and found the pressure gauge reading around 29 to 30 psi - supposed to be 14 psi. I checked the gauge and it seems to be reading around 5 psi high.
So I sent the pump back to Aeromotive. They said it tested fine but replaced the bypass. What makes me made is that they removed the fittings (would have much preferred they didn't) but they did not clean the old sealer off the threads correctly. Near impossible to properly clean the threads once the pump is assembled!
The worst thing is that for some unknown reason, they replaced the motor. That would be fine, with exception that the new pump body is 0.030" smaller in diameter than the old one, so the pump was just sliding in the custom billet bracket. Not Happy! I shimmed it with brass stock for now.
Anyway, psi before the regulator is now 20 psi (if gauge reads 5 psi high as I expect, the pressure is now pretty close to what it is supposed to be). Hope to get the car on the road tomorrow - I am cautiously optimistic.
I do have to say Aeromotive has been really trying to help, but their screw-ups have cost me a lot of time, money and missed race dates with my daughter (and those available dates are very limited).
Some pics of the system:
2147214421422143214521482149
So I built a new electric pump system around the 140 gph Aeromotive pump. Didn't want to drill holes in the rust free California car, so I mounted it all on a new aftermarket gas tank. Pumped 109 gph through regulator and filter - good to go right? Nope!
Driving on street it would drop to 4 psi, and at times the regulator made strange noises. So dumped the Holley Blue regulator for a new Aeromotive regulator and redid some tubing per Aeromotive's recommendations. Interesting thing is that when I dropped pump voltage to 9 volts regulator pressure would go up around 1/2 psi no matter what the conditions were. No difference with the Aeromotive regulator.
Did not like the tight bend on the 1/2" aluminum fuel line from the tank to the pre-filter, so I made a 5/8 aluminum line. In order to bend the line, I had to make a 1 inch radius 5/8 bender. Worked out real well.
So I put a pressure gauge before the regulator and found the pressure gauge reading around 29 to 30 psi - supposed to be 14 psi. I checked the gauge and it seems to be reading around 5 psi high.
So I sent the pump back to Aeromotive. They said it tested fine but replaced the bypass. What makes me made is that they removed the fittings (would have much preferred they didn't) but they did not clean the old sealer off the threads correctly. Near impossible to properly clean the threads once the pump is assembled!
The worst thing is that for some unknown reason, they replaced the motor. That would be fine, with exception that the new pump body is 0.030" smaller in diameter than the old one, so the pump was just sliding in the custom billet bracket. Not Happy! I shimmed it with brass stock for now.
Anyway, psi before the regulator is now 20 psi (if gauge reads 5 psi high as I expect, the pressure is now pretty close to what it is supposed to be). Hope to get the car on the road tomorrow - I am cautiously optimistic.
I do have to say Aeromotive has been really trying to help, but their screw-ups have cost me a lot of time, money and missed race dates with my daughter (and those available dates are very limited).
Some pics of the system:
2147214421422143214521482149