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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
PW50 engine swap?
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[QUOTE="Jasle, post: 1279993, member: 26675"] I go 260 and the pw50 pulls me fine. especially with the qt50 rearend. but no you will not be able to get the pw80 motor to work. you can buy a YT60 piston. then have your cylinder offset bored and you can get a pretty nasty 60. find the QT50 rearend and press the ring gear off the shaft and press the pw50 shaft in. drop the new ring gear and pinion in and you have 5.7:1 instead of 4.9:1 rearend. this thing will wheelie very easy. also buy the aftermarket clutch springs. makes a HUGE difference in takeoff beause the clutch has a higher stall. but first you must address your problem on the motor. sounds like an air leak. get the bike nice and warm to where it starts having the problems. then spray carb cleaner around the case and cylinder base. if the bike rpm's get better or instantly die you found your leak. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
PW50 engine swap?
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