Micro Polishing??
Micro Polishing??
I was reading an article on a d16 that was running 11.2's and they micro polished the crank. does anyone know what that process is and what it does as far as performance? I've never heard of doing that to a crank.
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As far as i know they micro polish all cranks after they are ground. Or atleast all the machine shops ive been in do. Its like real fine sand paper that is sorta like a belt sander that they use on the crank as it spins.
Last edited by tfnaaf; Oct 29, 2004 at 02:46 PM.
i know what you mean about what the process is but i am more looking for what the benifit of having it done to the crank is? how would this better the performance of it? Maybe having to grind some of the crank then polish to balance the engine?
Joined: Nov 2003
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From: Boise, Idaho
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Originally Posted by HyaBoosta
i know what you mean about what the process is but i am more looking for what the benifit of having it done to the crank is? how would this better the performance of it? Maybe having to gring some of the crank then polish to balance the engine?
) this leaves a fairly rough surface then the polishing does as it sounds, removes the imperfections from grinding and makes it real smothe, as for balancing this has basically nothing to do with balancing. When they balance a crank its either drilled out to remove weight or drilled out then a heavier weight is put back and welded in. Well i wasn't talking about taking an air grinder and going at it in my garage,Gotta give me more credit then that, Lol. but i still don;t get what that does for performance. It seems like a maintenence job.
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Rep Power: 0 Decreases friction, helps oil delivery across the entire bearing, increases bearing life. The harder you work your rods, the better your crank and bearings needs to be prepped.
Last edited by SMX; Oct 29, 2004 at 03:26 PM. Reason: typos
Joined: Nov 2003
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From: Boise, Idaho
Rep Power: 327
Originally Posted by HyaBoosta
Well i wasn't talking about taking an air grinder and going at it in my garage,Gotta give me more credit then that, Lol. but i still don;t get what that does for performance. It seems like a maintenence job.
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From: Washington DC
Rep Power: 423 The smoother it is, the less stress risers there are, and the higher the fatigue strength. The cyclic loading the crank undergoes is quite violent, so being able to increase the fatigue limit is advantageous.
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