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Thread: HOW LONG DOES IT TAKE FOR MOLLY RINGS TO BREAK IN

  1. #1

    HOW LONG DOES IT TAKE FOR MOLLY RINGS TO BREAK IN

    406 small block new molly rings alittle smokey when you give it a shot of gas not alot but it still does it only got 25 miles on it.Fresh rebuild runs great

  2. #2
    Senior Member EXPERT BUILDER
    Join Date
    Nov 2008
    Posts
    263
    mine in my 383 did the same thing but only for about an hour of runtime

    what did u gap the rings to?

  3. #3
    got the motor allready built just took it out and laid a beating on it gets less all the time maybe it just likes getting beat on ha ha

  4. #4
    Senior Member RACING JUNKIE
    Join Date
    Jan 2006
    Location
    La.
    Posts
    2,890
    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.

    Zip.


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