no muffler
#7
Buddy of mine has a old moto 4 350 that has no muffler,still going strong,sounds sweet!
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#9
Originally posted by: yellowexracer
i though that no muffler burned up valves? I think you would have to make some drastic jetting changes,
i though that no muffler burned up valves? I think you would have to make some drastic jetting changes,
I'd be more worried about ambient air directly (unrestricted) going up the exhaust pipe and cooling the exhaust valves too quickly when the engine is turned off.
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