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Thread: 85 ATC 250r Top End Questions

  1. #1
    Afrothunderkat's Avatar
    Afrothunderkat is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    85 ATC 250r Top End Questions

    YO!

    Just picked up this http://www.ebay.com/itm/161327347954...%3AMEBIDX%3AIT

    And I'm trying to piece the rest of the kit together. I found OEM honda circlips, OEM honda wrist pin bearing, wiseco wrist pin, athena gasket kit, and now i'm looking for rings. Can any 68mm (piston bore) wiseco rings work?

    Also, if anyone has 85r top end parts PM me.

    -Thanks!
    2003 RM 250 ::: 1985 ATC 250R ::: 1986 ATC 250ES
    -----------------------------------------
    Past Trikes: 1985 YTM 225DX ::: 1984 200s ::: 1985 YTM200

    Past Bikes: 1987 KX80BW ::: 2002 TT-R 125L ::: 2000 RM 125

    Quote Originally Posted by Tri-ZNate View Post
    Talking about the build quality, I got their exhaust and economy muffler and it fits together like tossing a hot dog down a hall way with nothing provided to take up the slop. Best $200 ever spent

  2. #2
    Marty is offline Just Too Addicted Arm chair racerJust too addicted
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    Unfortunately you are going to have to use wiseco part number 2677 rings. I was just told wossner, pro x, and wiseco all use the same ring vendor but Honda OEM stuff they use a different ring so no aftermarket ring will fit.Also when you are looking at your wiseco box on the label it has the piston number but also has the rings part number and it has 4 numbers and ends in CD and also has the wrist pin wiseco part number that starts in CW. If you needed a 67 i have a brand new ring set wiseco part number 2638 CD

  3. #3
    Afrothunderkat's Avatar
    Afrothunderkat is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Quote Originally Posted by Marty View Post
    Unfortunately you are going to have to use wiseco part number 2677 rings. I was just told wossner, pro x, and wiseco all use the same ring vendor but Honda OEM stuff they use a different ring so no aftermarket ring will fit.Also when you are looking at your wiseco box on the label it has the piston number but also has the rings part number and it has 4 numbers and ends in CD and also has the wrist pin wiseco part number that starts in CW. If you needed a 67 i have a brand new ring set wiseco part number 2638 CD
    Roger, got CW18 wiseco circlips and 2677CD wiseco rings off ebay.

    Now, can I use a oem honda wrist pin bearing?
    2003 RM 250 ::: 1985 ATC 250R ::: 1986 ATC 250ES
    -----------------------------------------
    Past Trikes: 1985 YTM 225DX ::: 1984 200s ::: 1985 YTM200

    Past Bikes: 1987 KX80BW ::: 2002 TT-R 125L ::: 2000 RM 125

    Quote Originally Posted by Tri-ZNate View Post
    Talking about the build quality, I got their exhaust and economy muffler and it fits together like tossing a hot dog down a hall way with nothing provided to take up the slop. Best $200 ever spent

  4. #4
    Afrothunderkat's Avatar
    Afrothunderkat is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Aug 2011
    Location
    Richmond NH
    --
    336
    http://www.ebay.com/itm/Wiseco-Wrist...335b7c&vxp=mtr

    12x18x60 is correct measurements? Anyone have a wrist pin they can measure up?
    2003 RM 250 ::: 1985 ATC 250R ::: 1986 ATC 250ES
    -----------------------------------------
    Past Trikes: 1985 YTM 225DX ::: 1984 200s ::: 1985 YTM200

    Past Bikes: 1987 KX80BW ::: 2002 TT-R 125L ::: 2000 RM 125

    Quote Originally Posted by Tri-ZNate View Post
    Talking about the build quality, I got their exhaust and economy muffler and it fits together like tossing a hot dog down a hall way with nothing provided to take up the slop. Best $200 ever spent

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