250r engine in 450r frame

[nazzy201]

I recently got a great deal on a 2004 450r rolling chassis. Just wondering if anyone has put a 250r motor in one?

[Mxjunkie]

I remeber hearing about a guy wanting to do one that was a member of the site but I dont remeber if he did it or not..

That actually isnt a bad idea at all because it's basically a 2004 250r if you think about

[Langbolt]

Has anyone tried this yet ???

It looks like the motor would attach to the swingarm bolt better than a 400ex frame.

Plus the Rad mounts are already there....

[Derrick Adams]

I have seen one done, in pictures. There was a guy in England (I think) that built a 450R three wheeler and took the 250R engine and put it into the 450R quad he stole the engine out of.

It seems like it would be a simple swap, although that 250R engine looks tiny in the 450R chassis.

[Langbolt]

Do you still have the pics ?

[Jason Hall]

Here's the bike Derrick was talking about. This guy Is Way cool, and build's some REAL nice stuff.

[Langbolt]

Man that looks MINT!!!!

I see the 250R motor still sits up high......so the swingarm pivot is still a bit higher than the stock 250R position.

I think the aftermarket companies.....like Walsh, Lonestar & Laeger should make a 450R geometry - 250R powered hybrid chassis.

That way ALL the parts - except the MOTOR - Are easily obtainable and are readily available.

my 2 cents

[jcs003]

there is a build thread on here somewhere.

[250Renvy]

Originally posted by Langbolt
Man that looks MINT!!!!

I see the 250R motor still sits up high......so the swingarm pivot is still a bit higher than the stock 250R position.

I think the aftermarket companies.....like Walsh, Lonestar & Laeger should make a 450R geometry - 250R powered hybrid chassis.

That way ALL the parts - except the MOTOR - Are easily obtainable and are readily available.

my 2 cents

That's basically my HRE frame. Everything is 450R and 400ex except motor.

When I first called, Mike was making himself a Narrow front 450R frame and asked if I wanted that with just a 250R motor.

[rayman375]

Who built that 450R? Or does anyone know where the build thread is if there is one?