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  1. #1
    Seaman Apprentice
    Join Date
    May 2005
    Location
    Long Island
    Posts
    36

    Default Question about rust removal!!!

    I found at the end of last year that I burned a hole in my #3 piston. Well after removing the cylinder head and exhaust manifold, I apparently should have put everything back together until I could repair it because now everything has rust on it, including the cylinder walls. My question is, how do I remove this rust and did I really screw something up by letting it get rusty? Its finally getting repaired this saturday and I want to get rid of all the rust before then. Thanks for your assistance.

  2. #2
    Vice Admiral Reel Poor's Avatar
    Join Date
    Jan 2005
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    The Sunny Beach of Gulfport, Ms
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    5,523

    Default Re: Question about rust removal!!!

    Unfortunately if it's too rusty your job just got bigger.
    Of those who receive good advice, only the wise will profit from it.

    If you need it....Get it
    If you want it....Wait
    If you have it....Flaunt it



  3. #3
    Admiral HT32BSX115's Avatar
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    Dec 2005
    Location
    WA
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    7,170

    Default Re: Question about rust removal!!!

    Machine shops remove the rust by putting the block and heads in a "hot tank" that does a pretty good job.

    You don't have to worry about corrosion in the cyls since it will be removed when they're bored out for the next size pistons.

    Any rust on the valves & seats will be removed with grinding and replacement of the valves that don't clean up with grinding.

    Rust on the crank is removed by polishing/grinding. The machine shop will determine if the crank can be used or replaced. The cam and lifters get replaced so no worries there.


    This is a complete rebuild right?



    Regards,

    Rick
    73 de Rick
    ----------------------------------------------------------------------------------
    I use xxx oil and have never had a problem........
    1987 FourWinns 211 Liberator, 7.4L- Bravo III installed by ME,
    Formerly OMG 460 King Kobra powered
    1947 Stinson 108-2 Station Wagon
    , Franklin 6A-335B. Hartzell CS 2-blade prop
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    All PM's cheerfully answered! Please place technical Questions in the appropriate forum so everyone's included

  4. #4
    Fleet Admiral Gary H NC's Avatar
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    Dec 2005
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    East of Charlotte NC.(Indian Trail)
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    8,884

    Default Re: Question about rust removal!!!

    If it is just light rust you may be able to use a cylinder hone to clean it up.
    Let a machine shop look it over they should be able to tell you.


    1981 ChrisCraft 210 Scorpion K,175 Johnson SeaHorse

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