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Thread: 450r Motor Swap

  1. #1
    Join Date
    Aug 2010
    Posts
    223

    450r Motor Swap

    sup guys, i was looking around the shop and i gathered enough parts to put together another 450r, not a serious race bike, just a bike to have fun on for ****s and giggles. The only thing i dont have is an engine and i was thinking about using something different other than a 450r engine. Has anyone used another engine in a 450r? and how hard was it to put in. Remember this bike is just for fun so it has to be relatively cheap, nothing too radical. Thanks!

  2. #2
    Join Date
    Mar 2009
    Location
    cherry valley
    Posts
    956
    i seen a stroked xr600 in one and it ripped

  3. #3
    Join Date
    Aug 2008
    Location
    Central NJ
    Posts
    11,326
    XR650 air cooled fits pretty easy, the water cooled one will work too. It is a bi of work to modify the frame to fit the engine tho.
    If it's stupid, and it works, it isn't stupid. - Murphy's Law
    2000 426EX,sold
    2004 450R WIP
    -Longtime A.A.D.S. (Accessory Acquisition Disorder Syndrome) sufferer.
    400EX Frequently Asked Questions, CHECK HERE FIRST!

  4. #4
    Join Date
    Aug 2010
    Posts
    223
    how about a cr250 2 stroke?

  5. #5
    Join Date
    Aug 2008
    Location
    Central NJ
    Posts
    11,326
    Sure it could be done.
    If it's stupid, and it works, it isn't stupid. - Murphy's Law
    2000 426EX,sold
    2004 450R WIP
    -Longtime A.A.D.S. (Accessory Acquisition Disorder Syndrome) sufferer.
    400EX Frequently Asked Questions, CHECK HERE FIRST!

  6. #6
    Join Date
    Aug 2010
    Posts
    223
    have you ever seen it before?

  7. #7
    Join Date
    Aug 2008
    Location
    Central NJ
    Posts
    11,326
    Originally posted by njquadracer11
    have you ever seen it before?
    No.

    I have seen people swap in 250 2 strokes into a 400ex before.

    Basically if you have enough time and money anything can be done.
    If it's stupid, and it works, it isn't stupid. - Murphy's Law
    2000 426EX,sold
    2004 450R WIP
    -Longtime A.A.D.S. (Accessory Acquisition Disorder Syndrome) sufferer.
    400EX Frequently Asked Questions, CHECK HERE FIRST!

  8. #8
    Join Date
    Jun 2004
    Location
    North Alabama
    Posts
    7,438

  9. #9
    Join Date
    Aug 2010
    Posts
    223
    hey thanks, do you have any information about what i would have to do for motor mounts?

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