MustangWorks.com : Ford Forums - View Single Post - How to turn a high pressure in tank pump into a low pressure pump!!

crazypete · 09-27-2002, 09:42 AM

This is for all you guys doing carb conversions who dont feel like chopping up a perfectly good fuel system and spending hundreds of dollars on fuel pumps and regulators.

I'm converting my 91 mustang to carb and I bought a mallory 5 port return style regulator. Well, the 40 psi stock pump was so strong that my fuel pressure guage went offscale even with the regulator turned to maximum resistance. I even popped a fuel line!

This is what to do: Go to radio shack and buy 4 1 ohm wirewound 10 watt resistors (they'll look like little clay bricks). Tie these in series. Go under the seat and cut the lead wire to the fuel pump and put this resistor pack inline. Beautiful! 6 psi exact! 8 psi with 3, 10 psi with 2 and 15 psi with just 1 resistor.

I'm getting a sore shoulder from patting myself on the back.

09-27-2002, 09:42 AM	#1
crazypete Registered Member Join Date: Sep 2002 Location: Boston Posts: 592	How to turn a high pressure in tank pump into a low pressure pump!! This is for all you guys doing carb conversions who dont feel like chopping up a perfectly good fuel system and spending hundreds of dollars on fuel pumps and regulators. I'm converting my 91 mustang to carb and I bought a mallory 5 port return style regulator. Well, the 40 psi stock pump was so strong that my fuel pressure guage went offscale even with the regulator turned to maximum resistance. I even popped a fuel line! This is what to do: Go to radio shack and buy 4 1 ohm wirewound 10 watt resistors (they'll look like little clay bricks). Tie these in series. Go under the seat and cut the lead wire to the fuel pump and put this resistor pack inline. Beautiful! 6 psi exact! 8 psi with 3, 10 psi with 2 and 15 psi with just 1 resistor. I'm getting a sore shoulder from patting myself on the back.