converting a FI 4.0L v6 to LPG

[cook]

Whats involved with converting a fuel injected 4.0L over to high octane Propane?

 

[94redranger]

I have a 1994 4.0 converted to dual fuel (runs on gas and propane). You have to buy the tanks, line, vaporizer/regulator, fuel lock off solenoid, injection manifold, and an ignition timing advance computer.
The liquid propane flows through the vaporizer regulator. The engines coolant runs through the vaporizer to vaporizer the propane (liquid propane runs like shit). It then goes to the injection manifold which is mounted in front of the throttle body. From there it gets sucked into the engine and so on. LPG kits are fairly expensive for fuel injected vehicles, but it is worth it because propane is a hell of a lot cheaper than gasoline.

 

[Jspafford]

LPG is not much cheaper than 87 in my area. In fact where I work we sell it for $3.89 a gallon.

 

[MAKG]

AND it has less energy per gallon than gasoline, so this will cost you much more.

It's a whole lot easier -- and more effective -- to convert a carbureted engine. But a converted 300 I6 won't do as well as a working 4.0L even with the additional displacement.

 

[94redranger]

I live in Saskatchewan and it is 59 cents a litre and reg. gas is 1.189 a litre. It is less energy. However it is purchased in the liquid state and is used in its gaseous state. Its gaseous state is much less compact than its liquid state so not that much is really used. The timing advance computer will help to squeeze all the power out of the propane. It has an octane rating of 110 so the the ignition can be advanced. I notice that there is less power on propane but I can still pass on highways. For a daily driver you don't need to use the maximum amount of power anyways. If you do want to lit it up though just flip the switch over to regular gas.