4-stroke silencer on 250 2-stroke?

[skarpenz]

Hey guys, I'm thinking I may have found the problem with the bike. Its a 250 2-stroke and it has a 4-stroke XR muffler on it. Could this silencer be a problem affecting my bike? I know the design is completely different from a 2-stroke pipe, so this is really my last resort for problem areas.

 

[ignition retard]

Could you post a picture of that? Isn't the xr header diameter different than the cr expansion chambe stinger? what about the mounts?

 

[2strokerfun]

What is your problem??

 

[whenfoxforks-ruled]

If you are talking about the cr, then yes, it would cause a lack of performance. I would take it off.

 

[XRpredator]

If you are talking about the cr, then yes, it would cause a lack of performance. I would take it off.

and replace it with a two-stroke silencer

 

[skarpenz]

It bogs at low RPM, and will not idle, no matter how I adjust the carb or the cable.

 

[whenfoxforks-ruled]

Any jetting issues, you must fix the mechanical issues first. Replace the silencer, then jet it. You may not have to after you fix the exhaust. Get a short silencer for low end, or a long one for top end. maybe that is where the previous owner was doing some figuring, erroneously of course.

 

[Reesknight]

It bogs at low RPM, and will not idle, no matter how I adjust the carb or the cable.

Wow, just like a real 4-stroke! :nener: