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Old 19-09-2011, 09:35 PM   #1
Dave_mechanic
 
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125cc xsport/lifan engine???

i have a 125cc pit bike engine with xsport on the covers and i think its a lifan engine , the gudgeon pin size is 12mm i think and i want to put a bore up kit can any one help me identify the engine and think of a good method of making it fast, im going to have to put a new piston and rings in it any way cause its smoking like a gooden lol thanks
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Old 20-09-2011, 11:16 AM   #2
wayne-tzr
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Re: 125cc xsport/lifan engine???

there are kits on ebay for the BBK. also just post up you engine number located near the front sprocket we can ID or post a picture.
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Old 20-09-2011, 05:00 PM   #3
binge
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Re: 125cc xsport/lifan engine???

12mm pin?
I've heard of 13 and 15mm, but not 12. Strange.

If the long engine bolts are M7, then a YX140 barrel will go straight on.
A YX140 piston runs a 13mm gudgeon pin.

If they are M6 engine bolts, then afaik, the biggest you can go is 125cc, unless you get a barrel bored out yourself.




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