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I/C crank pins & journals

What's the best way to finish them?

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Scott	03/09/2014 09:18:02
52 forum posts 10 photos	Hello all Just wondering if anyone has any tips for getting a good finish on crank pins and journals for I/C engines? Thanks Scott
JasonB	03/09/2014 11:14:52
Moderator 22555 forum posts 2634 photos 1 articles	Fine Emery cloth or wet n dry on a flat stick will give that final finish and take them down to size. Cover the lathe up well, I tend to lay a piece of board or card on the bed so there is no risk of things getting caught in the chuck.
Bill Pudney	03/09/2014 13:12:12
606 forum posts 24 photos	Or press in a needle roller...... cheers Bill
Scott	05/09/2014 14:16:52
52 forum posts 10 photos	Thanks chaps!
Scott	10/09/2014 19:56:19
52 forum posts 10 photos	Just a quickie Jason - what grit would you go down to? Cheers Scott
JasonB	10/09/2014 20:03:20
Moderator 22555 forum posts 2634 photos 1 articles	about 600g W&D if they are running agains a metal bearing ec aluminium conrod with or without bronze bearing, bit less say 400g if using ballraces. J

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