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Thread: atc 90 engine cases

  1. #1
    Join Date
    Oct 2015
    Location
    Chapman KS
    --
    30

    atc 90 engine cases

    well i am into my 78 atc 90 motor and the LH oil case is fubar from PO jumping the chain. is there a difference in the early 90 cases from my 78 model. and what is the cutoff. my case is #1680109 this wold be the crank case not the outer case with flywheel and dual range. its actually ok

    I did some searching here and it sounds like any 90 case should work. just want to confirm this is correct before i get one on the way.
    1978 ATC 70
    1978 ATC 90
    1984 200 es Big Red
    1984 200x
    1985 250sx
    1985 350x

  2. #2
    Crazyktmmatt is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Jul 2014
    Location
    Idaho
    --
    237
    Sell ya a whole 90 engine
    200x - I think I have 7 of em?

    10 70's
    3 350x's
    Tri Z
    225
    kxt
    and the 90 110 125m that I need to get rid of.
    YT175 with rear suspension sold
    200es- SOLD !!!!!!

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