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adam
Lv 5
adam asked in Cars & TransportationMotorcycles · 6 years ago

anyone ever have rocker box gasket problems with a sportster?

My 84 sporty usually needs a front rocker box gasket every six months! The last time I used Yamabond with the same result. This time im going to try Permetex copper. Anyone else have this problem or a good idea?

5 Answers

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  • guardrailjim
    Lv 7
    6 years ago
    Favourite answer

    Check the engine surfaces with a straight edge.

    Any imperfections will cause gasket leakage.

  • ?
    Lv 7
    6 years ago

    You are over-tightning the bolts and that is why it keeps leaking. You may strip them and they will always leak after that. Get new replacement gaskets which are rubber coated metal and are far superior to the OEM gasket.

    http://stagesgrief.blogspot.com/2014/03/replace-ro...

    http://www.jpcycles.com/product/433-814

  • adam
    Lv 5
    6 years ago

    your link refers to an EVOLUTION 1200 CC sportster. I am running a LATE 1984 iron sporty different animal not even close. l

  • Joe
    Lv 7
    6 years ago

    What's a Harley without an oil leak?

  • Candid Chris
    Lv 7
    6 years ago

    Another reason might be that the engine is running too lean due to a freer-flowing exhaust without an up-jet.

    Source(s): Riding/racing for 50+ yrs.
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