Forum Discussion
SonicLogic
Jul 15, 2008Explorer
Professor, I am curious as to your satisfaction with the generator that you converted for use with propane. Knowledgeable mechanics to which I have spoken say that converting a small air cooled gasoline engine for use with propane is very problematic.
They say that propane has a slower flame spread rate than gasoline so the timing needs to be advanced to compensate. They also say that propane does not provide any induction cooling in the engine or any valve lubrication (as does gasoline) so the cylinder and valves run hotter.
In short, I’ve been told that propane conversions do indeed work, but to do it right you need to put in a better valves, harder valve seats and advance the timing in addition to changing the carburetion.
I have also been told that bi-fuel generators are more expensive mainly because they have the aforementioned added features built-in.
Does this coincide with your experience?
They say that propane has a slower flame spread rate than gasoline so the timing needs to be advanced to compensate. They also say that propane does not provide any induction cooling in the engine or any valve lubrication (as does gasoline) so the cylinder and valves run hotter.
In short, I’ve been told that propane conversions do indeed work, but to do it right you need to put in a better valves, harder valve seats and advance the timing in addition to changing the carburetion.
I have also been told that bi-fuel generators are more expensive mainly because they have the aforementioned added features built-in.
Does this coincide with your experience?
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