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Author Topic: Propane powered engine question  (Read 2305 times)

Steve

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Propane powered engine question
« Reply #30 on: March 11, 2010, 12:03:44 PM »

Stu
 
Squirt some oil in the cylinder and read it again.  That will tell you rings or valves.  Don't use allot
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Jacques

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Propane powered engine question
« Reply #31 on: March 11, 2010, 01:20:26 PM »

Just a thought:

Truck engines sometimesare built with a de;liberately low compression.

E.g. International, who have some of the toughest trucks, built their propane engines for heavy duty use at only 7.5 compression. Dont know about GM though.

The propane installation on the pics has a lot of simple improvements that can be done at no cost or just very low cost.


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Stewart Van Petten

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Propane powered engine question
« Reply #32 on: March 15, 2010, 04:55:25 PM »

Okay, I finally got some work completed on this machine.
 
Did a compression test. All the cylinders are cranking 90 psi. I installed new plugs, wires,  distributor cap and rotor. It runs a lot better now. I noticed that all of the plugs were rusty. It this a condition from running propane? I ran it around the yard cleaning up some snow piles to help them melt faster. It seemed torun smoother. I did not take it out for a road test to see if I still have a mid to high speed misfire yet though.
 
I still want to change it over to the 425 mixer at some point.
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Jacques

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Propane powered engine question
« Reply #33 on: March 16, 2010, 12:20:40 AM »

Plugs will not rust because of propane.
 
Because the combustion of propane is much cleaner, you wont get fouled flugs from running rich.
 
Probably those plugs needed replacement.
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ex-Mopars 1967 Chrysler Newport Custom Coupe, 1973 Imperial LeBaron 2dr hardtop, 1973 Imperial LeBaron 4dr Hardtop, 1971 Plymouth Sport Fury 2 door hardtop
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