Miked up my 70 LS-5 crank today. Mains are .001 under, rods vary from .001-.0015 under standard. What would you guys recommend - put .001 under bearings in or grind it to .010/.010?
Thanks in advance -
Pat
Thanks in advance -
Pat
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Re: To grind or not to grind....
Pat-----
If it were me and the journals were not irregularly worn and could be polished to be smooth and clean, I'd go with the .001" undersize bearings.In Appreciation of John Hinckley -
Re: To grind or not to grind....
Joe:
It is my quandry.... They are marginal - with a fresh crank buffer it will most likely take .005 more off of them. That could take some of the rods to close to .002 under. It is a difficult decision -- so close but unsure whether to take a chance. I get less than .005 out of round but there are some minor grooves. A polishing would remove them but then I think .002 would be required. Knowing this what would you do?Comment
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Do the job right.......
turn them, no margin for error as the journals will be true. Nothing wrong with .010 under journals.Comment
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Re: To grind or not to grind....
Pat----
Based upon what you now describe, your best plan is to have the crank ground 10/10. Or, if it were me, I'd get a new crank. Now that's not necessarily the SENSIBLE thing to do, but, it's what I'd probably do. I never said that I was sensible.In Appreciation of John HinckleyComment
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