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  1. #11
    Registered User BAJA WILL's Avatar
    My Boats:
    Don't even mention the word boat
    Join Date
    Feb 2001
    Tampa, Indian Shores Beach
    Yes I replaced the gaskets also along with, spark plugs, distributor cap, and impeller. I actually used the replacement springs from merc, kind of wishing I had used Isky now??

    Also I didn't think I had lost any power but I had, once I put back in the water I did notice an increase in power, not more speed but got to max rpm much faster.

    If you have the carb version you need to change them at 150-200hrs I did learn that during my research, actually the carb springs are suppose to wear out much faster, I think they used a different spring.

    Good Luck


  2. #12
    Registered Canada Jeff's Avatar
    My Boats:
    Sunsation and Apache
    Join Date
    Dec 2003
    Ottawa, Ontario,Canada baby!
    This is the most talked about engine for just this reason!

    I have an EFI version, and read every post about these blue motors for the past three years.

    Long and short of it, 200 hours is a good bench mark for valve replacment. Period!

    Compresion test won't tell you dick!

    leak down test won't tell you dick!

    Visual check is the closest you can go, without buying a spring preasure tester.

    If your at 200 hours, change your springs!

    I'm sure I'm going to hear a few stories of 300 and even 400 hours engines running fine, I don't care! Down time to me is important. Schit we only get 4 months up here. If you can't aford to do the valves, you shouldn't own the boat!

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