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Thread: Engine Casings

  1. #1
    Join Date
    Jan 2013
    Location
    Western Australia
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    Cool Engine Casings

    G’day,

    Can anyone give clarity as to which engine casings are compatible with late 888 Racing. I want to build 955, I have most parts but not sure on the best casings, not too concerned about period parts, just the most durable. Any help would be appreciated.

  2. #2
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    Default

    I believe st4 is the latest cast with the same stud pattern and swing arm bearing as the 851/888.
    st4s have the 996 stud pattern.
    Cheers!
    Thomas

  3. #3
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    Augustinusga, the netherlands
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    Default

    Quote Originally Posted by hauge View Post
    I believe st4 is the latest cast with the same stud pattern and swing arm bearing as the 851/888.
    st4s have the 996 stud pattern.
    I think the S4 cases are the same as the ST4 cases, those are supposed to be the strongest cases.

    Jacco

  4. #4
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    Cool

    Thanks guys got to get searching

  5. #5
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    Did the st4/s4 ever get oil cooling on both pistons?
    If I remember corect most of the engines only had oil cooling on the front cylinder until??
    My 748R 01 does not have the rear cylinder oil cooling whilst my (what ever) ST4S cases in my 888/1026 have the cooling on both.
    I belive the ST2 engines came in both types.
    Cheers!
    Thomas

  6. #6
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    Cornwall S.W. England
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    The late NOS ST4 cases that I have for my 955cc build, have the oil cooling jets under both front and rear pistons.
    ...and they spray from both sides of the crankcases.

    Steve R

  7. #7
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    Western Australia
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    Cool

    Steve what is the part number for the casings please if you can make time to check

  8. #8
    Join Date
    Feb 2011
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    Denmark
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    Default S4 and ST4 cases

    S4 22520411A 2001
    Oil drillings on both

    ST4 22520451A 2000
    Only oil drilling on horisontal
    Last edited by stiglarsenDK; 03-03-2018 at 09:14 AM.

  9. #9
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    Cool

    STIG .......Legend

  10. #10
    Join Date
    Jun 2007
    Location
    Melbourne, Australia
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    Default

    i have a used set of 2002 s4 cases with the squirters on each side.
    Brad The Bike Boy

    www.bikeboy.org

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