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Thread: Piston Clearance & Valves

  1. #1
    Join Date
    Feb 2004
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    6

    Piston Clearance & Valves

    I need to hone my cylinder for knew rings and after I hone it I want to make sure the piston to cylinder wall clearance isn't too much for the stock size piston. Could someone with a Clymer or owners manual tell me the normal and max. piston to cylinder wall clearance. I just have the stock cast piston.

    Another question I have is what can be done with valve seats, not valve guides, valve seats. If they are worn do they need replaced or can I grid and lap a new valve to them.

    Sorry I have a 1982 Honda 200 "plain 200"

    Thanks

  2. #2
    Join Date
    Apr 2002
    Location
    s.w. michigan
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    6,498

    engine specs

    clymers manual says to take to a dealer to have valve seats re-conditioned.
    not much more said for the valves them selves either,,, replace if any knicks or screw ups .
    if you click the picture below it should get large enough to read ( i hope anyway).

    john

  3. #3
    Join Date
    Nov 2002
    Location
    Kirkville, NY
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    3,831
    I have ground the valves and have not had a problem with it, do a seach, I think someone asked about it not too long ago.
    1984 Yamaha YT 60 Tri Zinger(current project)
    1983 Yamaha YTM 200 (rear suspension kit)..... long term project
    2004 BMW R1150R
    1972 Honda CT 70
    2007 Lifan 110

  4. #4
    Join Date
    Feb 2004
    --
    6
    thanks alot that is exactly the page I was looking for....

  5. #5
    Join Date
    Feb 2004
    --
    6
    that page is helpful but I didn't see anything about the cylinder wear range and limits....is there another page by chance? Thanks for your help

  6. #6
    Join Date
    Apr 2002
    Location
    s.w. michigan
    --
    6,498

    specs

    that be a whoops ,,, sorry.

  7. #7
    Join Date
    Feb 2004
    --
    6
    Perfect.....thanks again

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