has any one ever swaped another motor in this bike. I've done a IT490(enduro version of a yz490) 2 stroke single.  I'm buying a frame soon to build another race bike this time I'm going with a ktm 620 4 stroke single should weight about 275/300 dry/wet.   at about 53-55 HP. vs the 500e's 35hp @ 400 lbs. or what ever it is.

reason for this is the frame is an awsome set up. narrow and stiff.  I'll be needing stock body parts later but just wanted to say hi to all.  
I don't really know much about the bike since I only reaced it a season then blew the motor. I didn't really have to work on it much. I pulled the motor right after that. and did the swap.

I'll be reading up on onld posts so it'll take me a while before I get through to give some opinions on things.
It took me a LOOOOOOOONG time to find this site.

Welcome to the site! Do a search on 'swap'/'swapping' or 'motors'. There should be a thread on this page or page 2 in the General Section.

Here's a link:

http://www.gstwins.com/forum/viewtopic.php?t=6087

But, seriously, do a search for more information. Details are everything.

i'll make you a deal on a 2001 KTM DUKE II engine
been sitting in my basement for 2 yrs

located in NC

damn now you got me thinking about doing another project......