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Aftermarket Engine/Parts
Lifan
Ideal exhaust size for lifan 125cc
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<blockquote data-quote="69ST" data-source="post: 142512" data-attributes="member: 5"><p>Yes, sounds like you're heading in the right direction. It's overrich. Going from the current pea shooter muffler to something that's adequate should lean-out your mixture, especially as the revs build. Only way to know exactly what the new exhaust will do is to bolt it on.</p><p></p><p>Better, imo, to start from the rich side then go lean, in small stages, until you reach the point where the engine will just rev-out cleanly under full power/WOT. That will get you within 1-2 steps of ideal and keep peak combustion chamber temps down. Typically, Lifan engines run very hot until broken-in.</p></blockquote><p></p>
[QUOTE="69ST, post: 142512, member: 5"] Yes, sounds like you're heading in the right direction. It's overrich. Going from the current pea shooter muffler to something that's adequate should lean-out your mixture, especially as the revs build. Only way to know exactly what the new exhaust will do is to bolt it on. Better, imo, to start from the rich side then go lean, in small stages, until you reach the point where the engine will just rev-out cleanly under full power/WOT. That will get you within 1-2 steps of ideal and keep peak combustion chamber temps down. Typically, Lifan engines run very hot until broken-in. [/QUOTE]
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Lifan
Ideal exhaust size for lifan 125cc
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