Maintenance & Technical > KX500 Steel Frame Conversion (SFC)
2003 KX 250 SF Conversion
umberto:
I talked with zz3gmc about his 2004 250/500 bike, and I think I am going to relocate the coil to the side of the frame like he did, away from the engine behind the radiator shrouds. I think the heat and vibration is just cooking them.
alexander-vmann:
--- Quote from: umberto on December 06, 2015, 07:57:28 AM ---So I got all the stock jets in for my carb and got them installed, but now I am dealing with another issue that is familiar. When I was riding at Danger's place, the bike died as I was finishing up my test ride. I couldn't get it to start again, and it felt like it didn't have spark. I pulled the bike apart (one of the joys of the SF conversion is no room to do anything :-D) and did a process of elimination. The compression check came back in the 180 psi range, and there are no unusual noises or vibrations. The carb is flowing fuel, and the plug is new. So I checked for spark at the plug, and of course nothing. The OHM test revealed no flow through the plug wire, and the main wire was out of range. This is the second coil I have had on the bike, and the second fried one. I noticed that my mount was a little crooked and it is letting the end where the plug wire comes out touch the head a little bit. Do you guys think that this is causing the fried coils, or should I just replace everything and start over? I worried that something upstream is frying the coils and I am just putting a band aid on the problem.
Thank you again for the advice!
--- End quote ---
i think with electronics the wires transfers any heat FAST so relocating is definatly a good idea by you
umberto:
I got my coil relocated and replaced with another one from Sandblaster. I got her fired up and took her for a quick ride at my parent's house. Here's a quick video of a section of the ride:
https://www.youtube.com/watch?v=mNJZiJI2We8
Here I am returning from the ride. Man it was wet in the old cow pasture:
alexander-vmann:
umberto:
Thank you Alexander-vmann. It was really nice to have it running better, although I still need to fine tune the jetting a bit. My Dad did the video, and he said I was hitting them with dirt for quite a while after I passed them, so I guess it's doing pretty well as is. :-D
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