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Old 03-04-2008   #10 (permalink)
Coroja
Member
Grand Prix 125
 
Join Date: Dec 2007
Location: Southern California
Posts: 34
Sugggestion for minimizing rod small-end wear

By the way, I noticed in reading through some older posts that some people were experiencing premature wear of the piston pin bores. If I was rebuilding an engine, I would definitely replace the wrist pins and have the new ones DLC (diamond-like carbon) coated. NASCAR cup engine builders were never able to eliminate pin galling issues once their engines began to see 9,000 RPM until they started to DLC-coat wrist pins. It is now a standard practice and pin problems are pretty much a thing of the past. The pin bore does have to be clearanced for the coated pin because there is a measurable build-up, but any competent machine shop can do that.

Just my $0.02
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