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Dirt Bike Discussions By Brand
Suzuki MX & Off-Road Dirt Bikes
Rm250
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[QUOTE="David Trustrum, post: 662392, member: 21529"] I feel for you. My gut instinct says the crank is out of line or the bearings are being pressed against the crank. I had a Honda engine that was welded & the cases were trued after that but it needed a thicker centre gasket (this engine used a gasket) or the crank would be tight. Also I relieved the crankcase bearing seats so the bearings would press right the way in. Obviously you are pressing the bearings in by the outer part not the inner. Just checking. In the old days crankcases were usually matched pairs. With more accurate machining I don’t know if this philosophy has changed but it seems unlikely that your cases are dud, I mean presumably the bike has been fine in the past. For the sake of prudence I’d find a decent tuner (not just the local bike shop) & send him the bottom end for evaluation c/w flywheel weight (which doesn’t sound healthy but I would have though unlikely to destroy the plot in such quick order). Was vibration noticeably bad? [/QUOTE]
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Dirt Bike Discussions By Brand
Suzuki MX & Off-Road Dirt Bikes
Rm250
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