Vintage Dirt Bike Q & A

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Board index » Questions & Answers » Yamaha YZ, MX, IT & TT

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rscrambler
PostPosted: Sun Jun 20, 2010 12:37 pm 
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Joined: Sat Jun 19, 2010 9:41 am
Posts: 1
Can anyone suggest the optimum clearance on said bike using 1mm oversize wisco piston. I know there is a size written on the box but had varying advice since.

Any suggestions??
Many tahanks.
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dirtbikemikey
PostPosted: Mon Aug 16, 2010 2:39 pm 
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Joined: Mon Aug 16, 2010 2:19 pm
Posts: 11
The bore should match the number. The bore should be 86mm for 1mm over. The piston will be undersized from the factory. It will be .004in clearance or .05mm
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Board index » Questions & Answers » Yamaha YZ, MX, IT & TT

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