125 SX Motor Problem

[JohnHipHopkins]

Hey guys, im new to the forum.

Here is my problem. I have a 2001 KTM 125SX with everything except the motor. I have been searching and searching and cant seem to find a motor for this bike. Is anyone selling one or know where I might be able to get one? Also is it possible to put a different brand motor in if I cant find one? Like a YZ125 or 250 motor exc.. I know it would need a little custom work to bolt in but are there any other high related issues with an engine swap? Any help would be greatly appreciated. Thanks.

[bajadog]

Fitting a jap engine in your bike will require a lot of
modifications. Airbox, carb boots, cables, possibly having
to change the rear sprocket position relative to the c/s.

This might fit your frame, not sure if your want to go this big.

http://cgi.ebay.com/ebaymotors/ktm-3...item27bc60bd50

http://cgi.ebay.com/ebaymotors/KTM-3...item1e63e740b7

[JohnHipHopkins]

Thanks for the help baja....Size isnt an issue as long as its a 125 or bigger. I really want to have a 250 shoved in there since I use to own a 250 and loved it. My buddy has a spare '05 RM125 engine sitting in his shop and I think I could manage to get the Carb Boot and Airbox to work. Even getting it to bolt up wouldn't be an issue. But what is the issue that I might run into that you mentioned about the sproket location? If I end up going this route that is. haha