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Old 1979 880 cast piston |
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braskaboy 
Groupie 
Joined: June-17-2023 Location: Nebraska Points: 25 |
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 Topic: Old 1979 880 cast pistonPosted: June-21-2023 at 7:15pm |
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Is this acceptable?
Should I try to grind it and polish it or does it make any difference? It's night and day difference from my machine head 1991 880.   
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cobalt327
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Joined: November-15-2013 Points: 3046 |
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Posted: June-22-2023 at 9:47am |
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Truthfully, if the casting line isn't raised above the deck of the piston far enough that it's contacting the seal (which I'm sure it isn't), then it is only a cosmetic issue. And, removing any material from the top of the piston acts to reduce the compression ratio. The change is miniscule, but it's a change in the wrong direction, regardless.
So my recommendation is to do nothing unless the aesthetics of it bother you too much. Odd, I wonder why I want to listen to Deep Purple all of a sudden??? haha |
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