Maintenance & Technical > KX500 Steel Frame Conversion (SFC)
2003 KX 250 SF Conversion
umberto:
Hopefully it doesn't come to that, but knowing I can swap up makes things a whole lot easier. Instead of just finding 88, I can look for 89 and up K5 stuff. Thank you dave916!
umberto:
I ran through Sandblaster's awesome trouble shooting guide, and was able to get readings on most of the stuff. There are some differences in the 88 wiring as opposed to the wiring of the 89 and up bikes, but most of the reading came back in range. Two things really stood out to me:
The coil read in the 1.70 to 1.80 range in OHMs from the lead wire and ground. The guide said it was supposed to be 0.26 to 0.36 and as high as 0.50.
I could not get a reading out of the plug wire, even after removing the cap. The wire inside the plug wire was in very bad shape. I tested the OHM meter (a brand new Bosch unit) on the stock 03 KX 250 coil I had, and it read within the range for the plug wire on that coil.
All the other components were in the OHM range listed. I am pretty comfortable that the coil plug wire is frayed or broken. I found an 88 coil on e-Bay that is $35.00 with free shipping:
Or I can go with this AMR Racing coil for $67 free shipping:
Does anyone have any experience with the AMR coil? Should I go with a stock coil and not risk using a hotter coil?
sandblaster:
--- Quote from: umberto on July 04, 2015, 07:24:10 AM ---
Does anyone have any experience with the AMR coil? Should I go with a stock coil and not risk using a hotter coil?
--- End quote ---
Yes... The AMR kept smoking my plugs after about 2-3 minutes.
Go back to the stock coil.
I found the ad for the 88 coil.
http://www.ebay.com/itm/121641622374?item=121641622374&viewitem=&vxp=mtr
I told him his price was too high and suggested 29.99
Looks like he listened... :-o
umberto:
Awesome, thank you for saving me a few bucks! It's on its way to OKC.
mixn-gas:
Do you have to remould the tank for clearance?
also does the standard air boot and intake manifold fit?
-Logan
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