anyone ever sawped a 250r motor into a 400ex?

[Martin Blair]

I like 2 strokes alot and have always wanted a r, but the 400ex is good right now with supesnion, so i can get dirtbike motors from the cr250 for 1600, i need a radiator, a carb, and to make some sort of mounts, along with a custom pipe, has this ever been done before?

[hondaracer3x]

i did it, give me ur e-mail and ill send pics to you

[Bobbs07]

Originally posted by hondaracer3x
i did it, give me ur e-mail and ill send pics to you

Just curious, is it worth it to do it?

[hondaracer3x]

the vibration sucks, but its crazy fast, with 65hp, ill have no prblem keeping up with the 450s

[northeast400]

I was thinking of doing the same thing

[TORO1968]

Check out Service Honda's webpage...they do this with New 400ex's and CR250R engines...then sell them as new.

www.servicehonda.com

-Jordan

[Toadz400]

They had this in a ATV Sport a year or two back, except it might've been in an R frame...But to deal with the vibration, they put rubber on the engine mounts to absorb the vibration, and it actually didn't vibrate much at all. If I were you I'd make my own rubber fittings to go on the mounts, I'm sure that'd help a bunch.

[lil400exman]

buy a real R motor. A few guys over at www.rriders.com did that and they like it alot;)

[exatak199]

these will cut down on vibb.

http://www.hpd-inc.com/Images/EngineMounts11.gif

they sell for $16.00

[Martin Blair]

i sent you my email, who makes the pipes or can a use a regular r pipe?

[Atreyu]

Send me pics of your ex/cr conv..Shiftex03@yahoo.com

[EvilJester400EX]

Silicone in your handlebars will also cut down the vibrations.