Thread: HOW LONG DOES IT TAKE FOR MOLLY RINGS TO BREAK IN
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Old 04-18-2010, 07:17 PM
  #4  
zipper06
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RACING JUNKIE
 
Join Date: Jan 2006
Location: La.
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Don't know about a street motor but the last engine i built it took about 6 or 7 1/4 mile passes before it ran it's best. I don't use them on a street motor, so i don't know how many miles that takes.

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