EFI To Carb Swap

86GT · 08-06-2002, 01:15 PM

I'm just wondering what's involved, other than the obvious, carb, intake, distributor, fuel system. Does anyone know of any sites or sources of info to make the swap easier? I'm doing it because I'm sick of chasing down problems with my EFI setup. All those sensors are driving me nuts. Thanks.

Conman · 08-06-2002, 03:24 PM

sorry this isn't answering your question but what do you plan on doing with all of the EFI stuff once you get it off your car
I could probably use some of the parts in your sig.

and where abouts is Ruthven? anywhere in eastern ontario by chance?

flyin 5.8 · 08-06-2002, 07:33 PM

(1) Many people will tell you that you can use the stock in-tank fuel pump with a regulator. I've heard that regulators can creep. letting pressure rise to ?40psi? and this will kill a carb (key on engine off). A good thing to do is get the pickup from a '83-'85 and swap the fuel level sending unit from yours to it (the ulder units have different resistance values). Put an electric or mechanical pump outside the tank with a regulator.

(2) An electric pump can be wired to the existing harness for the fuel pump, (solder the fuel pump relay trigger to ground and the + voltage feed to the FPR to a key on ignition wire.

(3) You'll need a duraspark III ignition system (distributor, ignition module, coil...) or use an aftermarket system (MSD, ACCEL...)

(4) Now the really good part. The computer and all the wires for the sensors are not used any more so they can come out and all that copper adds up to alot of weight that can be removed from the front of your car.

I can't remember the web site where I found this but that covers most of it.

08-06-2002, 01:15 PM	#1
86GT Sniffed too much n20 Join Date: Oct 1998 Location: Ont, Canada Posts: 1,018	EFI To Carb Swap I'm just wondering what's involved, other than the obvious, carb, intake, distributor, fuel system. Does anyone know of any sites or sources of info to make the swap easier? I'm doing it because I'm sick of chasing down problems with my EFI setup. All those sensors are driving me nuts. Thanks. __________________ 2002 Windsor Weekend Q16 Qualifier

08-06-2002, 03:24 PM	#2
Conman Registered Member Join Date: Apr 2002 Location: Kingston, Ontario Posts: 351	sorry this isn't answering your question but what do you plan on doing with all of the EFI stuff once you get it off your car I could probably use some of the parts in your sig. and where abouts is Ruthven? anywhere in eastern ontario by chance? __________________ '88 lx, Black on Black, check it out here Spent all my money on school, what a dumb mistake I'm old enough to know better, but still too young to care.

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08-06-2002, 07:33 PM	#3
flyin 5.8 Registered Member Join Date: Apr 2002 Location: Holland, Michigan Posts: 73	(1) Many people will tell you that you can use the stock in-tank fuel pump with a regulator. I've heard that regulators can creep. letting pressure rise to ?40psi? and this will kill a carb (key on engine off). A good thing to do is get the pickup from a '83-'85 and swap the fuel level sending unit from yours to it (the ulder units have different resistance values). Put an electric or mechanical pump outside the tank with a regulator. (2) An electric pump can be wired to the existing harness for the fuel pump, (solder the fuel pump relay trigger to ground and the + voltage feed to the FPR to a key on ignition wire. (3) You'll need a duraspark III ignition system (distributor, ignition module, coil...) or use an aftermarket system (MSD, ACCEL...) (4) Now the really good part. The computer and all the wires for the sensors are not used any more so they can come out and all that copper adds up to alot of weight that can be removed from the front of your car. I can't remember the web site where I found this but that covers most of it.