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Topic: Fuel pump questions??? (Read 5475 times) previous topic - next topic

Fuel pump questions???

Reply #15
since you have no rail mounted fuel pump, your in tank pump is pushing far too much pressure, so if you are using a carb, it does need to be replaced with a low pressure pump. a pressure regulator isnt going to help the issue at all.
64 falcon
66 mustang
05 grand marquis

yeah though i drive through the valley of rice

i shall fear no turbo for torque art with me

thy rod and thy piston they comfort me

Fuel pump questions???

Reply #16
Quickshift nailed it. You need a regulator with a return at the regulator to use the in-tank pump. You must get the pressure down before it gets to the carb. Sorry I am not familiar with the filter you mentioned. My setup returns straight to the tank from the regulator.

Fuel pump questions???

Reply #17
Quote from: 83TB;424875
Tried the fuel pump today, I get fuel to the carb, I have a pressure gauge no regulator.  I turned the key on and walk to the front of the motor and waited until the needle moved, it got to about 1.5lbs and then I noticed fuel coming out the vent tube on the carb, next to the inlet port on carb for gas.  Not sure if the psi from the factory intank pump (no frame rail pump) is to much or the floats on the carb are sticking?  I was thinking on getting a non return style regulator and then try?  any ideas?
Please re-read my link in post #11 and post your findings back here.
84 COUGAR/90 HO, 1.7RRs, performer RPM,700DP, equal length shorties, stainless EXH ,T-5,Hurst pro-billet, KC clutch, 8.8/ 4.10s, line-lok, bla ,bla, bla.
71 COMET/289,351w heads, 12.5 TRWs, 750DP, Liberty TL, 9"/6.00s, 11.9x @112 , bla,bla,bla.

Never shoot your mouth off, unless your brain is loaded! ....I may get older, but I'll never grow up!....If you're not laughing, you're not living!  :laughing:

Fuel pump questions???

Reply #18
Got my popcorn out of the microwave, my cold beer, and now just waiting to see if the intake pump survives or if it gets the ax and a Holley pump finds its way in the car.

Darren

83 351W TKO'd T-Bird on the bottle


93 331 Mustang Coupe - 368 rwhp

Fuel pump questions???

Reply #19
http://www.summitracing.com/parts/frm-g3499/overview/
that is the filter I was referring to in earlier post, my thought of asking that was so I did not have to run another line up the regulator in engine bay.  My thought is if you had a dead head regulator up stream from it, if it would allow the extra fuel to return to tank, that way I could mount it close to the tank for a short return, just not sure if that is the way that filter was made to do.

Fuel pump questions???

Reply #20
Quote from: flylear45;424879
Quickshift nailed it. You need a regulator with a return at the regulator to use the in-tank pump. You must get the pressure down before it gets to the carb. Sorry I am not familiar with the filter you mentioned. My setup returns straight to the tank from the regulator.

a regulator isnt going to cut it with the fuel injection pump, the pressures are just too high. i tried that years ago with my old 83 grand marquis that had CFI. and i used a good holley pressure regulator with a return line, and the pump still blew fuel past the regulator and flooded the carb. i had to swap to a low pressure pump in the tank.
64 falcon
66 mustang
05 grand marquis

yeah though i drive through the valley of rice

i shall fear no turbo for torque art with me

thy rod and thy piston they comfort me

Fuel pump questions???

Reply #21
Quote from: QUICKSHIFT;424885
Please re-read my link in post #11 and post your findings back here.


12.3 volts, fuel line off carb, line plugged off, 2psi max, factory fuel pump in tank only, so if I put another pump on frame, so I can the volume and pressure that I need.

Fuel pump questions???

Reply #22
Quote from: rbohm;424911
a regulator isnt going to cut it with the fuel injection pump, the pressures are just too high. i tried that years ago with my old 83 grand marquis that had CFI. and i used a good holley pressure regulator with a return line, and the pump still blew fuel past the regulator and flooded the carb. i had to swap to a low pressure pump in the tank.
I beg to differ. I'm using the stock in tank lift pump (approx 2psi) along with the high pressure frame mounted CFI pump and a Mallory 4309 regulator to feed my 700DP.....ZERO problems.
84 COUGAR/90 HO, 1.7RRs, performer RPM,700DP, equal length shorties, stainless EXH ,T-5,Hurst pro-billet, KC clutch, 8.8/ 4.10s, line-lok, bla ,bla, bla.
71 COMET/289,351w heads, 12.5 TRWs, 750DP, Liberty TL, 9"/6.00s, 11.9x @112 , bla,bla,bla.

Never shoot your mouth off, unless your brain is loaded! ....I may get older, but I'll never grow up!....If you're not laughing, you're not living!  :laughing:

Fuel pump questions???

Reply #23
Quote from: 83TB;424915
12.3 volts, fuel line off carb, line plugged off, 2psi max, factory fuel pump in tank only, so if I put another pump on frame, so I can the volume and pressure that I need.
If you reinstall the frame mounted pump and leave the in tank pump as is, you can run the same setup as I am with good results. This will produce approx 33GPH@ 7PSI. The Mallory reg is the secret as it is built different to prevent "creeping" and provide a stable pressure and flow. This will support 325HP.
84 COUGAR/90 HO, 1.7RRs, performer RPM,700DP, equal length shorties, stainless EXH ,T-5,Hurst pro-billet, KC clutch, 8.8/ 4.10s, line-lok, bla ,bla, bla.
71 COMET/289,351w heads, 12.5 TRWs, 750DP, Liberty TL, 9"/6.00s, 11.9x @112 , bla,bla,bla.

Never shoot your mouth off, unless your brain is loaded! ....I may get older, but I'll never grow up!....If you're not laughing, you're not living!  :laughing:

Fuel pump questions???

Reply #24
I got a freebie from a friend today,http://aeromotiveinc.com/products-page/fuel-pumps/11209-h0-fuel-pump-38-npt/

Going to use this with the intank pump, not sure if going to try like the instructions say, or get a regulator and return line, the ad says does not need one, but we will see.

Quote from: QUICKSHIFT;424925
If you reinstall the frame mounted pump and leave the in tank pump as is, you can run the same setup as I am with good results. This will produce approx 33GPH@ 7PSI. The Mallory reg is the secret as it is built different to prevent "creeping" and provide a stable pressure and flow. This will support 325HP.

Fuel pump questions???

Reply #25
Quote from: 83TB;424932
I got a freebie from a friend today,http://aeromotiveinc.com/products-page/fuel-pumps/11209-h0-fuel-pump-38-npt/

Going to use this with the intank pump, not sure if going to try like the instructions say, or get a regulator and return line, the ad says does not need one, but we will see.
Make sure you use a return line. The in tank pump is designed for constant flow NOT dead headed. If you are determined to use that aeromotive pump in a dead headed system without a return line you MUST remove the in take pump.
84 COUGAR/90 HO, 1.7RRs, performer RPM,700DP, equal length shorties, stainless EXH ,T-5,Hurst pro-billet, KC clutch, 8.8/ 4.10s, line-lok, bla ,bla, bla.
71 COMET/289,351w heads, 12.5 TRWs, 750DP, Liberty TL, 9"/6.00s, 11.9x @112 , bla,bla,bla.

Never shoot your mouth off, unless your brain is loaded! ....I may get older, but I'll never grow up!....If you're not laughing, you're not living!  :laughing:

Fuel pump questions???

Reply #26
Quote from: 83TB;424906
http://www.summitracing.com/parts/frm-g3499/overview/
that is the filter I was referring to in earlier post, my thought of asking that was so I did not have to run another line up the regulator in engine bay.  My thought is if you had a dead head regulator up stream from it, if it would allow the extra fuel to return to tank, that way I could mount it close to the tank for a short return, just not sure if that is the way that filter was made to do.


Hmmm. Maybe.

 For $2.95 and the fact that you have what you have, it may be worth a shot. It's not my first choice though.

Fuel pump questions???

Reply #27
X
going to use the aeromotive pump and a return regulator, I was thinking about the factor set up to (quick shift), but afraid the the ler would hit, cause it has the filter and pump and bracket together, so I took it apart and mounted just the aeromotive pump to the bracket, going to see if I can make this fit some where like this.

Fuel pump questions???

Reply #28
Quote from: 83TB;424980

 I was thinking about the factor set up to (quick shift), but afraid the the ler would hit, cause it has the filter and pump and bracket together,
  .......ya, forgot about that.....I relocated mine to the front of the shield protecting the tank behind the axle when I went with duals.
84 COUGAR/90 HO, 1.7RRs, performer RPM,700DP, equal length shorties, stainless EXH ,T-5,Hurst pro-billet, KC clutch, 8.8/ 4.10s, line-lok, bla ,bla, bla.
71 COMET/289,351w heads, 12.5 TRWs, 750DP, Liberty TL, 9"/6.00s, 11.9x @112 , bla,bla,bla.

Never shoot your mouth off, unless your brain is loaded! ....I may get older, but I'll never grow up!....If you're not laughing, you're not living!  :laughing:

Fuel pump questions???

Reply #29
Quick shift you have any pics of that set up?