EFI-->Carb Fuel Pump issues..... ??

[Katmandu]

I'm converting an EFI 89 Mustang over to a carb setup. I know the "best" way to convert the fuel pump system is to remove the EFI in-tank pump and use a sump type setup.

I've heard of several folks that kept the EFI pump and simply regulated the pressure down to carb'd #s (6 - 8 lbs or so).

Anyone have more details on how this is accomplished ??

 

[85_SS_302_Coupe]

It can and has been done, but consider the consequences because i've seen them first hand. A guy i knew was running the same setup....made a few passes down the track, and because the computer kept pushing the stock pump at 60lbs or whatever they run at, it eventually overpowered the regulator and blew about 15lbs of fuel through his carb and spewed fuel out the top, catching his hood/engine bay on fire and his whole car went up right there at about 1/8th track. He pulled out his trusty Autozone fire extinguisher but it didnt do any good. The fire dept. got the fire out but his whole doghouse was destroyed by the time they took care of it.

Consider all that, vs. what you'll pay for a '85 or older gas tank from a junkyard, and the afternoon (few hours at best) of wrenching that you'll have to do to swap them over. It's really a no brainer...be safe, do it right.

 

[Katmandu]

Consider all that, vs. what you'll pay for a '85 or older gas tank from a junkyard, and the afternoon (few hours at best) of wrenching that you'll have to do to swap them over. It's really a no brainer...be safe, do it right.

Good point.

BTW, I see you are near Nati'. I'm up the road here in Troy.

Are you a Stangbanger ?? www.Stangbangerz.com

 

[85_SS_302_Coupe]

Good point.

BTW, I see you are near Nati'. I'm up the road here in Troy.

Are you a Stangbanger ?? www.Stangbangerz.com

Got the same nickname over there

 

[tjm73]

There is an easier way.

You'll need a good electric fuel pump that flows the right psi for a carb setup. You'll also need a length of fuel hose in a proper size (I don't know the size).

Drop your gs tank and pull the electric in-tank fuel pump assembly out of the tank. Remove the fule pump from the cradle. Use 2 stainless steel hose clamps and clamp a length of that rubber fuel line between the pickup end of the cradle and the output to the engine side of the cradle. Put the fuel pump cradle back into the gas tank.

Now mount the electric fuel pump you bought. Cut the factory fuel line and splice into it the fuel line from the tank output. Runteh pump output into the factory fuel line.

There you go you're ready to run with a carb.

 

[coreyhayman]

fuel cell time!

 

[90NotchBack]

I did it that way on my 302 and some times when I would turn the car off the pump would stay on and blow fuel down the carb. Well one to many times of that the motor couldn't take it because it would wash the oil off the rings and you will end like this.

. It tore up the piston and cylinder wall. So when I put the 351W in. I made my own pick up tube. I have 1/2 aluminum fuel line from back to front. I have a holley blue and a carter super strip mechanical pump with a aeromotive regulator. When I'm driving around the streets I leave the electric pump off. When I go to the track I turn the electric pump on. Also when I'm running nitrous to give me the extra fuel I need. Here is a pic of the pick up tube I made using the stock unit and 1/2 aluminum line.