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Thread: Head Gasket Sizes

  1. #1
    ZacH_GrifF's Avatar
    ZacH_GrifF is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Jul 2011
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    Pearl, MS
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    405

    Head Gasket Sizes

    I'm in the middle of ordering parts to convert my 185s to 200cc. And I need to know if I need to order a head gasket to fit a regular 200 or if I go oversized with piston do I need to get an over sized head gasket cause I can't find any oversize head gaskets. Like say if I go from stock 65.mm to 65.5mm will the stock 65mm head gasket work?
    1. 83 185s: (the money pit) xr200 cam, 200cc cylinder, 10.25:1 piston, 83 250r front end, 450r hubs, full suspension
    2. 85 Big Red 250es: in pieces
    3. 85 200m

    4. 00 Polaris Magnum 325 2x4: stays broke
    5. 02 Yamaha Wolverine 350 4x4: trail bike

  2. #2
    Join Date
    Nov 2010
    Location
    Oshawa, On, Canada
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    2,123
    Yes the stock headgasket will work. My R is bored over and stock head gasket works. Should be the same for the 200's
    1985 Honda 250r x2
    1986 Honda 250r
    1986 Honda 250sx
    1985 Honda 250sx x2
    1985 Honda 350x x2
    1986 Honda 350x
    1984 Honda 125m x4
    1983 Honda atc 70 w/ Lifan 125
    1984 Honda atc 70
    Yamaha tri zinger
    Yamaha 4 zinger
    Brap braaaap

    http://www.youtube.com/user/3wheelsoffroad

  3. #3
    ZacH_GrifF's Avatar
    ZacH_GrifF is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Jul 2011
    Location
    Pearl, MS
    --
    405
    Thanks Jason
    1. 83 185s: (the money pit) xr200 cam, 200cc cylinder, 10.25:1 piston, 83 250r front end, 450r hubs, full suspension
    2. 85 Big Red 250es: in pieces
    3. 85 200m

    4. 00 Polaris Magnum 325 2x4: stays broke
    5. 02 Yamaha Wolverine 350 4x4: trail bike

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