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Propane 4.0L?


Branger2B

Well-Known Member
Solid Axle Swap
Joined
Aug 16, 2007
Messages
137
Age
42
Vehicle Year
1988/86
Transmission
Manual
So last year at tough truck i chrushed my 1/4'' gas tank skid plate on the rocks and pushed the tank up into the pump and bent the pickup inside and ripped a hole in it. So i need t replace it anyway, A friend has a complete propane system including a set of big dual tanks that would fit pefect where i need them to go on the back of the Branger.. The setup is complete, not that old, and was puled from a carbed v8 truck. I run a Fuel injected 1994 4.0l Ford v6, Ive researched a bit and found they do make propane injection kits for these motors to the tune of $1000.. or more.

My question is. If i capped off the injector holes in the intake manifold or just cap off the fuel rail itself and leave the injectors in place. Could i make an adapter for the hat and install it into my intake hose? Has anyone done something similar to any other injected motor. I like how clean propane runs, mine floods out a bit now and every time i chamnge the oil it reeks like gas i knwo thats not good for the bearings and not to mention washing the cylinder walls clean.. Also, anyone running propane have any experiance with the "drip" oiling system? Thanks -Cody
 
All you ranger nuts ouut here and no one has tried this, dont think im lazy ive tried google, everyone i know and even some f-150 forums, found lots of info available on the kits.. but im not spending that kinda money, id rather come up with a home brew solution. Truck never sees road and is trailered to every event, so running with the check engine light on ect. is no issue i just need to make it run diecent...? sofar my thought is to make an adapter that bolts onto the Throttle body and has a short length of pipe with an elbow ont he end, so the propane setup can sit upright like it would on a carbed motor. i know it wont work in the horizontal position. Im not trying to decide if i should or should not do it, my rig is going pane this year so if i cant make it work on this motor ima drop a v8 in... But i have doubler and such so if i change drivetrain i gotta spend alotta money.... so im staying v6. i know i cant be the first one to try this....?
 
All I can say is if you unplug the injector wires, you will get codes left and right and may not run right. As far as running the injectors dry idk. Anything is possible and this is totally do-able.

Just make sure that when you push on the skinny pedal, it opens/closes the regulator for the propane along with the throttle body valve. As far as it being fine tuned, it shouldnt matter since it is an off road vehicle only, just make sure it can still run correctly at the rpms you run the engine at when wheeling.
 
sofar my thought is to make an adapter that bolts onto the Throttle body and has a short length of pipe with an elbow ont he end, so the propane setup can sit upright like it would on a carbed motor. i know it wont work in the horizontal position. Im not trying to decide if i should or should not do it, my rig is going pane this year so if i cant make it work on this motor ima drop a v8 in... But i have doubler and such so if i change drivetrain i gotta spend alotta money.... so im staying v6. i know i cant be the first one to try this....?

I'm not trying to rain on your parade so to speak, but, I dont see how you can make this work with your 4L. I may be wrong on some points so hopefully if I am someone will correct me;

That being said, If I'm understanding your idea of an adapter in a throttle body your confusing a 2.9L with the 4.0L... I dont completely understand propane systems, although from what I have researched, you'r idea will work on a carbed or early fuel injection systems. If you are right and the system does work, I would be worried about leaks. A propane leak could be potentially fatal. However if you are hellbent on the idea, you could replace the injectors with pipe and some sort of automatic valves conencted to the injector wiring, this should eleviate the issue with codes coming out of everwhere. The problem I see with this though is the timing of the injectors ( note you could possibly use the injectors, but I beleive they are liquid only and could possibly screw up using a gaseous fuel...i may be wrong though ).

How does a propane injection kit work? Where does it attach to the system,etc?

Something to consider...depending on money and time, you could take a 2.9L engine bore it out,etc to fit the 4.0L components with the 2.9 intake ( carbed ver ) and run the propane system that way. There was a post a LONG time ago about doing something like that on here. It may be worth looking up.

As to going to an 8, I'm assuming you have a 5speed, you could always use or make an adapter plate, I dont know much about tranny's but you could look into whether or not the bellhousing is interchangable,etc.

Or.......on a far shot, you could attempt to make a custom intake for the 4L....I dont think its been done yet...or if it has I havent found it posted online yet...lol.

Either way you go, keep us posted on what you do, I'm sure there is more than a few of us interested in seeing a 4L gone to lpg.
 
if i was confused as to what engine i was working on i Should be shot or not allowed to have tools or keys in my hand. Women even know what engine they have n their car :icon_thumby:

On a ligther note, im going to use a the intake hose, and have my adapter "t" into it, between the TB and MAF sensor. and setup the lingage to open the mixir and TB at the same time, Im going to leave the injectors in and let them dry fire, The hole in the injectors is too small for the propane. im gona try to modify it on the cheep. I plan to put my 460 in later int he trucks life and im going to run it on propane, right now ive got the backl half of the cage cut of and im redoing it, so i either mount the pane tanks or another fuel tank, if i go fuel tank now its not gona be easy to switch to pane later with the v8, So im going to install it now and run this v6 for another year if possible, so i dont have to remove my doubler, id ont drive to town t buy shoes in my ranger so i would never runt he stock tranny behind a built v8. i blow enought m5ods up behind my 4.0l :D Ill keep you guys updated but im newer to the pane game so ive got some researching to do before i even start this. any thoughts or hel p u guys can give me woudl be much appreciated.. I have looked and looked for pane threads on this site, lots about the fuel itself but naddda on converting a ford FI v6. thanks.


The propane injection kits are expensive because there all computer controlled and have fancy injection blocks. im trying to lose the electronics on my trail only truck. and i can think of alot nicer to spend over $1G.
 
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Sounds unique, keep us posted! I pretty much gave up the thought of propane on RBV engines (with the exception of the 2.8) thanks to the whole lack of an intake manifold that takes a carb.

Well, sounds like it should work in my head... just like TBI... so I can't think of any reason why it wouldn't work.

I planned on running pane on the 351w I got in my garage but I don't know if I'll ever be bothered to swap the thing into the ranger.
 
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Cng

I drive a 95 4.0 that had CNG on it (a municipal vehicle).
The tank is gone, but the computer, wiring, pressure regulators, gauges, heaters, etc is still in the truck. To do it right and still have the right air/fuel mixtures is more than just sticking a hose from the propane bottle into the intake tract.
 
Well, sounds like it should work in my head... just like TBI... so I can't think of any reason why it wouldn't work.

I know two 2.8 liters running on TBI.:D I've heard that people are driving there 2.8's on propane, I think that would be sweet to do. Anything is possible.
 
I drive a 95 4.0 that had CNG on it (a municipal vehicle).
The tank is gone, but the computer, wiring, pressure regulators, gauges, heaters, etc is still in the truck. To do it right and still have the right air/fuel mixtures is more than just sticking a hose from the propane bottle into the intake tract.



I think i forgot to mention that i have a complete propane system that was on a running truck. from tanks to mixer carb. instead of making a custom intake or adapters to run some carbed manifold. im gona try the simple ways first before i get to technical, would be nice to get it work for cheep. like i said wost case if it dont work im yankin the v6 out anyways so i have nothing to lose. pretty good time to ry somethign different i think. :D
 
This looks like a cool idea. You could get a intake manifold that converts your engine to carb. Then put a propane mixer instead of a carb. That would be kind of cool actually.
 
If you need any help/advise/pics let me know I have a dual fuel on my 94 4.0. I dont use it anymore due to high propane price and few fill stations. That said when I did use it I couldn't complain. I have a switch that when switched over to propane disables the fuel pump, injectors(pretty much everything that controls the efi system) and engages the fuel lock off valve and the separate propane ecu which advances timing based on rpms and what not. Ive learned from my mistakes with this system especially in winter time but Ive also learned from my mistakes on this truck as a whole.
 

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