Maintenance & Technical > KX500 Steel Frame Conversion (SFC)
KTM 450/ K5
Toom038:
We pretty much got it done now. Mt welding friend had the motor mounts finished in a day. The stock head stays were used with no mods. It took a few hours of cutting cr500 and kx550 FMF pipes to get the bends we needed. We used the kx head and stinger with the cr mid (fat part) section. A lower pipe mount was added to the frame. A cr500 FMF muffler was used. It had to be tweaked also. (Thanks to Motopunk for the pipe info!http://i555.photobucket.com/albums/jj442/Toom038/photo11.jpg) Had to use an older (98) KTM 2 stroke air boot to align with the carb. I mounted the cdi box and coil on the same stock KTM mounts. Very little grinding to get them to fit. Had to make a bracket to attach the rear brake spring since it was originally mounted to the engine. Not pretty but it works and the kicker hides it. The kick starter knuckle rubbed on the frame so I had the remove about 2mm of frame.http://i555.photobucket.com/albums/jj442/Toom038/photo41.jpghttp://i555.photobucket.com/albums/jj442/Toom038/photo10.jpg
Toom038:
I took it to the track today. It was running a bit lean. I was pinging at about 1/3 throttle. Need to fiddle with the jetting. The track was deep sand. Had no water leaks. But the counter shaft oring was weeping a bit. That was expected since I used one from Ace since the Kawi shop didn't have one. I weighed the bike before and after the swap. Stock was 239 and now it's at 227. I can feel the weight difference just about every where on the track. Especially in the corners. Much more responsive, less sluggish. The stock 450 wanted to stand up in ruts but The KxTM stays in them and rails. The only bad trait I need to try to fix is that the engine wants to surge or run on when chopping the throttle entering turns. I'm hoping correct jetting will help. Won't be able to ride this coming weekend but will post an update when I do.
sandblaster:
What is your current jetting?
Toom038:
168 main, 58 pilot, stock needle in 3rd air screw 2 out. I'm at sea level running Motul at 50:1
motopunk:
oh to much honor for my little bit mechanical knowledge... :-D
here is your pic .all you have to do is click here "insert image" and copy the direct link from photobucket in there ...
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