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April 18th, 2015, 04:00 AM   #1
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HELP.....FE 650 2008 Crank axial clearance

Hi
My engine has 0,7 axial clearance (roller bearings).
Anyone know if this will be OK?
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April 18th, 2015, 04:17 AM   #2
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Bushie would be happy with that
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April 18th, 2015, 05:02 AM   #3
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Apparently, the idea is that you should start with a large axial clearance, then when the crank inevitably spreads, the clearance decreases to the correct range. My engine had minimal axial clearance, so I will check the crank spread.
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April 18th, 2015, 05:06 PM   #4
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should be fine ive run 1mm for about 70 hrs with the 105mm piston and weights welded on the crank, and haven't run any less than about 0.65 since i first rebuilt the engine .. in 2008

0.5 is getting too tight for the 650 and it can change a lot after assembly as james wrote, the idea is that if you aim for 0.8 its a lot easier and safer
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April 18th, 2015, 10:30 PM   #5
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Thanks guys

Appreciate your help
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