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Old 12-17-2007, 06:09 PM   #1
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Default WERKS .21 B7 PRO REAR BEARING??

Does anyone know which way the rear bearing is postioned? Do the ball face the rear or front? Joe
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Old 12-17-2007, 06:28 PM   #2
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the bearing will face the back.
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Old 12-17-2007, 06:38 PM   #3
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What bearing are you using?? There are incorrect bearings being sold. They need to have the stepped out inner race. That needs to face the crank or the crank will rub the outer race.
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Old 12-17-2007, 07:12 PM   #4
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The bearing is genuine, the protek is the wrong bearing. Looking at the bearing one side you can see the balls and the other side has like a seal. I cant remember which way it goes. It is also offset does this face rear or front? Thanks
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Old 12-17-2007, 07:37 PM   #5
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Install the bearing with the offset facing the crank (the back of the engine). One way to know is to put the crank into the bearing. If you have the correct direction, the offset inner race should stick out by .25mm towards the crank so the crank web doesn't touch the outer bearing race.
And yes, the ProTek is incorrect as well as Boca Bearing. I'm sending the ProTek back tomorrow. The TKO ceramic has the correct inner race stepped out like the factory bearing.
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Old 12-17-2007, 07:38 PM   #6
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.
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Last edited by ezveedub; 12-17-2007 at 07:40 PM. Reason: double post
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Old 12-17-2007, 07:48 PM   #7
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Much appreciated. I was right in my mind but wanted to double check. Thanks heaps. Yeah Im ding the same with the protek bearing. Have a merry xmas
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Old 12-18-2007, 11:34 PM   #8
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what are the bearing dimensions thx in advance
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Old 12-19-2007, 05:48 AM   #9
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Werks/Sirio have a 14.2x25.3x6mm rear bearing. The inner race is wider. It wider by about .25 to .3mm on one side only. That faces the crank web, since the crank does not have a step shoulder on it.
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Old 12-21-2007, 12:20 PM   #10
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Quote:
Originally Posted by ezveedub View Post
Werks/Sirio have a 14.2x25.3x6mm rear bearing. The inner race is wider. It wider by about .25 to .3mm on one side only. That faces the crank web, since the crank does not have a step shoulder on it.
thanks mate for that info i had to track them down of the tko site as amain didn`t have them
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