2 stroke engine can go 30KRPM I think, it has nothing to do with type of fuel. It is more of physically ability to handle at higher RPM. The higher RPM there is, the more horses it produces
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Originally Posted by sequoias
Aren't there 4 cylinder watercooled 4 cycle motorcycle engines that can do 12,000-13,000 rpm? Valves can go higher than 8k rpm depending on the design of the valve train.
The point, I'm not talking about the valves or the pistons. I'm talking about the combustion. How fast fuel burns off to the next combustion cycle....that's all there is. I think higher revving engines use special fuel that burns faster than unleaded gasoline.
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