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Thread: Who does reliable cylinder boring? And liquid cooled head swap on air cooled R?

  1. 04-13-2010, 10:17 PM #1
    TheRealFatShady
    TheRealFatShady is offline Roostin' Away Arm chair racerRoostin Away
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    Who does reliable cylinder boring? And liquid cooled head swap on air cooled R?

    I am probably going to just buy a new piston after boring my cylinder, that way I can know 100% which piston I need.

    Does anyone know a good reliable place that can do this?

    Also, can I put a liquid cooled 250R head on an air cooled engine?
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  2. 04-13-2010, 10:51 PM #2
    UncleBubbles
    UncleBubbles is offline New to the board Arm chair racerNew to the board
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    you can't put a liquid cooled head on an air cooled motor because it will overheat from no liquid going through it.
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  3. 04-14-2010, 10:44 AM #3
    TheRealFatShady
    TheRealFatShady is offline Roostin' Away Arm chair racerRoostin Away
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    Where would the liquid normally come from? Couldn't I add the radiator unit?
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  4. 04-14-2010, 10:51 AM #4
    oldskool83
    oldskool83 is offline Power User The day begins with 3WW
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    there was a kit sold years ago to make air foolers liquid R's, you'd be better to get a liquid motor and do that then start swaping out parts they are going to need way to much to even try and work and wont in the end.
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  5. 04-14-2010, 11:59 AM #5
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    dajeepman
    dajeepman is offline At The Back Of The Pack Arm chair racerFirst time rider
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    You need a water pump that the Air Cooled R does not have.
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  6. 04-14-2010, 12:06 PM #6
    tundrawolf
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    Maybe an electric unit? Still risky.
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  7. 04-14-2010, 01:55 PM #7
    TheRealFatShady
    TheRealFatShady is offline Roostin' Away Arm chair racerRoostin Away
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    I found a guy with a stock top end locally off an 85-86 R. Wouldn't the only difference in the motor be the top end + radiator and water pump?
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  8. 04-14-2010, 01:59 PM #8
    oldskool83
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    water pump is located on the bottom end of the motors
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  9. 04-14-2010, 03:05 PM #9
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    jeffatc250r
    jeffatc250r is offline Power User Got the holeshot
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    An air cooled cylinder and head work just fine as is, especially here in new england where it rarely gets over 100 degrees. Run what you have and dont go mix-matching things around. If you need a bore-guy, there is a guy I bring ALL my cylinders to in Ware Ma, good service, and good prices (under 60 bucks) If you need more info, let me know. Also, never buy a piston until the bore-guy roughs out the cylinder so you know for sure what to get.
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