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Old August 16th, 2016, 08:49 AM   #68
RacinNinja
Vintage Screwball
 
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Name: B
Location: Washington
Join Date: Feb 2016

Motorcycle(s): 2011 Ninja 250, 2008 Ninja 250, 2019 KTM 1290SDR, 2017 FZ10

Posts: A lot.
MOTM - Mar '16
Quote:
Originally Posted by daverdfw View Post
so I will need to purchase some plastigauge, if the tolerences are off, then I would need to replace the bearings? which plastigauge should I get? there are several sizes apparently.

by polish the crankshaft, do you mean doing like a wet sand with high grit sandpaper on the parts the rest inside the bearings?
You'll need PL-X Plastigage. For measurements of 0.018mm - 0.045mm. (0.0007 in. - 0.0017 in.) Yes, if the tolerances are off you'll need a set of bearings. However, that's unlikely but still possible. Don't forget to measure the side play of the crank in the cases too!! 0.002-0.008 inches.

Typically done with some emery cloth, leaving light score marks on the crank and getting rid of any wear or high spots. Kind of like a brake rotor, just a light scuffing to provide a new mating surface. The emery cloth comes in skinny strips that fit very well on the crank surface.
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