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Thread: ATC 250R top end questions

  1. #1
    Join Date
    Jul 2005
    Location
    Ontario, Canada
    --
    457

    ATC 250R top end questions

    Hi,

    i have been wundering if the liquid engines are just different cylenders and heads from the air cooled. Like can i use a 1985 crank or piston in my 1983?
    Thanks eh!
    Gasss ON!
    Last edited by TtownJoeShow; 02-16-2006 at 08:09 PM.
    '85 ATC 250R
    FMF Fatty & Power Core
    Boyesen Rad Valve
    38 PWK A/S
    K&N w/PF (next purchase)
    LSR +4 Axcaliber axle
    LSR Duel row bearing carrier
    DuraBlue Anti-fade (to be installed)
    13/36 sprockets
    '85 ATC 250R
    Parts trike (maybe future build?)

  2. #2
    totally different motors, you want something out of a 81-84 range...
    1985 350x
    1985 350x
    1985 250r
    200 auto x
    1984 250r
    1982 250r
    85 Tecate
    86 Tri Z
    85 TRI Z
    98Wolverine
    99TRX 300

    I need a 86 250r Headlight lens!!!! Hook me up!!!!









    Westcoasters check out the Florence ride....

    http://www.3wheelerworldforums.com/s...ad.php?t=42267

  3. #3
    Join Date
    Jul 2005
    Location
    Ontario, Canada
    --
    457
    BLAZERONE22,
    kinda thought "but ya never know" sorta thing.
    Are you selling them parts on eBay or....?
    '85 ATC 250R
    FMF Fatty & Power Core
    Boyesen Rad Valve
    38 PWK A/S
    K&N w/PF (next purchase)
    LSR +4 Axcaliber axle
    LSR Duel row bearing carrier
    DuraBlue Anti-fade (to be installed)
    13/36 sprockets
    '85 ATC 250R
    Parts trike (maybe future build?)

  4. #4
    No, I'm ebayed out,
    1985 350x
    1985 350x
    1985 250r
    200 auto x
    1984 250r
    1982 250r
    85 Tecate
    86 Tri Z
    85 TRI Z
    98Wolverine
    99TRX 300

    I need a 86 250r Headlight lens!!!! Hook me up!!!!









    Westcoasters check out the Florence ride....

    http://www.3wheelerworldforums.com/s...ad.php?t=42267

  5. #5
    Join Date
    Jul 2005
    Location
    Ontario, Canada
    --
    457
    my piston rings are sticking to the piston, would too lean of a mix cause this? like the rings kind of spot weld to the piston causing loss of compresion but they break free every now n then. i guess it could b over heating, and that would b parcialy caused by too lean of a mix.

    Could some awsome person measure the distance between the cylender bolts on a liquid cooled for me? (measure in an "X" and "L")

    Thank you in advance!
    '85 ATC 250R
    FMF Fatty & Power Core
    Boyesen Rad Valve
    38 PWK A/S
    K&N w/PF (next purchase)
    LSR +4 Axcaliber axle
    LSR Duel row bearing carrier
    DuraBlue Anti-fade (to be installed)
    13/36 sprockets
    '85 ATC 250R
    Parts trike (maybe future build?)

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