When to Micro-polish a crank?

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Old 10-28-2003, 02:54 PM
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Default When to Micro-polish a crank?

I am in the beginning stages of a D16 build and i have some ?s. Is micro-polishing the crank necessary? And how do I know if I need to get it done. There are NO visual blimishes.

So far I have Y8 block,crank.
Eagle Rods w/ upgraded bolt.
Soon to have CP Pistons .020 over & ACL bearings

how does this setup sound?
Old 10-28-2003, 02:57 PM
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Default Re: When to Micro-polish a crank? (maddog20)

I think it's a waste of money, you may see 1hp increase. But it wont hurt. Obviously it's not necessary because people have done good with out it.
Old 10-28-2003, 03:17 PM
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Ok cool! I just didn't know if this was standard practice?
Old 10-28-2003, 03:24 PM
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Default Re: When to Micro-polish a crank? (maddog20)


When I had my whole rotating assembly balanced (pistons, rods, crank, crank pulley, flywheel, pressure plate), they micropolished the crank for no charge. The belt was some crazy thing...like a cork/gold mix or something.

My crank had no visual defects, but when they microplished it, it was mirror-like in finish.

Sonny
Old 10-29-2003, 03:00 AM
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So should I do it?
Will have to get a plus size bearing?
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