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Memories for us old truckers

5

56wrench

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Dec 4, 2016
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2,138
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alberta
skyking1 said:
Burning propane is a pretty sweet setup. There's absolutely no cylinder rinsing at cold start, and the motor oil looks almost brand new after a service interval. I had a couple different propane setups.
Click to expand...
My dad had a couple propane-powered school busses. The only downside is potential piston scuffing on cold weather start-up due to lpg being dry. I had it happen to a chevy school bus engine. Classic 4 corner scuffing. Some new pistons etc. and running good again but i raised the curb idle and told the driver( my dad) to always put it on fast idle after it started, to get some oil up on the cylinders. It never happened again
 
Truck Shop

Truck Shop

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Dec 7, 2015
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Propane likes compression-10.5:1 to 11:1 works well with Propane. The other is engines built from factory run slightly more cylinder/piston clearance.
Plus hard seats and valves.
 
5

56wrench

Senior Member
Joined
Dec 4, 2016
Messages
2,138
Location
alberta
Ya to the seats and valves. When i was an apprentice at a ford dealer, a local propane company also ran propane in their pick-up trucks. They were F250's with the 360FE engines. They were hard on valves and seats. The shop would rebuild the heads with stellite seats but about every 2 years they would be back in for another valve job. Never seemed to have as much of a problem with other engines though
 
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