m37 Propane conversion

[RMS]

custom venture to adapted the mixer to a civilian throttle plate
with the manifold off it was an easy job adjusting the tappets
then it was all about cleaning up the block for some paint

[RMS]

terry made a fully adjustable bracket for the vaporizer

[RMS]

tiered of the slow spinning 24v starter terry converted to 12v and installed a 6v starter spins over quick 140amp alt 10ohm resister rather than a light
we also rewired the truck using 14g wire job and a half making a new light switch plug. just like the draft pads a bit of boiling water made the job easier

[RMS]

after we got her wired we did a brake overhaul (honed, new seals)and switched from dot 3 to dot 5

then we hit the road
convoyed throw the lower mainland and made are way to the bush
100k and no problems once he fixes the speed'O we will compare the operating cost
http://s1158.photobucket.com/albums/p61 ... rys%20m37/

[jimmy_stikx]

RMS, who made the conversion kit that you used or at least the lpg carb that's used on that setup. I'd like to eventually move to a dual fuel setup on mine myself.

[RMS]

terry is running a impco model E vaporizer with an electric lock off, feeding a 225 impco mixer on a custom adapter to work with a civilian dodge non governed throttle plate(carb base). you can buy a impco throttle body that will take the 225 mixer for around $150. if you want to run dual fuel you would be better off running a impco 300A mixer.
you dont have a location in you profile so its hard to suggest what to run. availability depends on location, if you are across the pond there is an Italian brand that is good but i cant remember the name. if you are south of me propane conversions are not that common and your best bet would be to find a Clark forklift with a continental in it to strip the propane stuff out of.

im no expert on propane and my part sourcing skills are meager at best. talk to local propane dealers and converters they should be able to send you down the right path. propane injection on diesel trucks is the new big thing so if you cant find a propane specific shop talk to the diesel guys

hope this helps

[jimmy_stikx]

Definitely south of you, SoCal desert at the moment. Thanks for the advice.

[Kaegi]

never heard of a king dick ratchet! lol. great work on the tank placement.

[52 M-42]

Yes, I noticed that too. I definitely have to get a couple of those. My son would love to have one of those for working on his Jeep.

Are those a common brand up in B.C.?

52 M-42

[RMS]

no king dick up here, however we have lot's of beaver

king dick is a British brand, it's made out of aluminum. i think its an aircraft wrench

[RMS]

Back to Propane

we have noticed that the advance curve on the distributor is not right for propane. way too much mechanical advance is causing the motor to want to work back on its self at higher RPM's. we are getting great low end torque and lugability with a high initial advance of 4-6 but as the RPM's climb past 2500 it becomes sluggish and more throttle is needed with every RPM and the truck does not want to break the 45mph mark. were as on gas it would easily break 55 and the only thing stopping the truck from going faster was fear that a rod would soon be sticking out the side of the block.

we are going to mess with the advance curve on the dizzy and I will report back with our findings

[RMS]

dizzy was messed with, advance curve was changed, everything was buttoned up and running smooth. so we changed gears and ripped out the flatty.

[RMS]

mocking up the rocket

[tbone1004]

RMS, do you have a writeup on your 2" receiver on the back of your truck? Great thread though and looking forward to seeing the operating cost differences.

[chris olson]

Olds 455? it should certainly have enough torque!