CR250 Carb on a CR125

[marshef]

What affect would putting a CR250 carb on a CR125 have?....It's a 01 Mikuni TMX 11a....on a 99 CR125...I know they put this carb on a 97 YZ125...but with very different jets?....Has anyone experimented with this combination?.....

Thanks
Mark

 

[TonyJeske]

It can be done just with some motor work and extensive jetting. A bit pricier than you probably thought. A lot more involved than just putting it on. Just becuase it is bigger doesn't mean it is going to flood your engine.

 

[2 strokes for life]

It will give you some more top end power if jetted well.

 

[76GMC1500]

Marginally improved top end with a severely decreased bottom end.

 

[hot125mod]

hey tony what do you think you are some kind of mechanic J/K guess who hahaha

 

[trial_07]

What affect would putting a CR250 carb on a CR125 have?....It's a 01 Mikuni TMX 11a....on a 99 CR125...I know they put this carb on a 97 YZ125...but with very different jets?....Has anyone experimented with this combination?.....

Thanks
Mark

You need to find the right jetting.

 

[XRpredator]

You need to find the right jetting.

thank you, Master of the Painfully Obvious

 

[trial_07]

No problem! What is more to say? I've changed a 26mm carburetor for a 28mm carburetor on a Sherco 2.5 (trials bike) and the only thing to do was to find a larger "tube" that connects the air box to the carburetor and find the correct jetting.