will chopping my honda rebel 250's exhaust pipes harm the engine (valves)?
i am only asking because i have done a small airbox mod and a friend recommended that i mod the exhaust to balance flow. I want to cut it right where the weld bead is for the baffles however i am worried about burning valves being its cut so short. I have seen many "bobbers" with this done but can not find any threads to account for the safety of this mod. I would prefer advise from a 250 owner whos familiar with this model and mod. Thanks in advance (BTW, this bike is a primary vehicle with 60+highway miles driven per day(1,500/month). also has a sproket mod changing final gear ratio 14t/30t)
I've been told that with IC engines there is danger that when you shut it down an exhaust valve may be off its seat, and if cold air flows into the engine that valve could get warped.
Perhaps that is the real problem here, not burning valves during operation, which would be determined by mixture.
Note on dragsters, where pipes are very short, the crew puts tennis balls in them to prevent that.
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