Maintenance & Technical > KX500 Steel Frame Conversion (SFC)
2003 KX 250 SF Conversion
umberto:
--- Quote from: zz3gmc on July 20, 2015, 06:57:40 AM ---I will try to get a pic tonight of the 2 airboxes. I have both.
--- End quote ---
Can you please do a visual and see if the 04 airbox will go in the 03 subframe? Thank you!
mixn-gas:
I'm not looking at the problem yet, so this may be an easy "nah that won't work because" But can you modify or make a different boot from the carb to the reed block to move the carb position to make it line up with the factory kx250 intake boot? Maby out of alloy?
umberto:
--- Quote from: umberto on July 20, 2015, 07:27:21 AM ---
--- Quote from: zz3gmc on July 20, 2015, 06:57:40 AM ---I will try to get a pic tonight of the 2 airboxes. I have both.
--- End quote ---
Can you please do a visual and see if the 04 airbox will go in the 03 subframe? Thank you!
--- End quote ---
The part numbers are the same for the two frames, so it should fit. The airbox itself was used from 04-07, which helps with supply.
umberto:
A guy listed a 2004 KX 250 airbox on eBay today. I snatched it up and should be able to button this dude up now. Every guy I know wants a ride on this beast, just to scratch it off his bucket list. $5 a ride? :-D
umberto:
--- Quote from: mixn-gas on July 20, 2015, 08:39:10 PM ---I'm not looking at the problem yet, so this may be an easy "nah that won't work because" But can you modify or make a different boot from the carb to the reed block to move the carb position to make it line up with the factory kx250 intake boot? Maby out of alloy?
--- End quote ---
I think the 2004 airbox should fix it. I looked at my 2004, and the airbox has an indention where the air boot attaches that should be set back enough to fix the issue. I only needed a fraction of an inch more to get the boot to fit.
The 250 air boot is much longer than the 500 air boot, because of the difference in engine size and airbox placement. I think if you made a new intake boot, it would really have to be shorter to connect the carb to the 2004 air boot. I think making it shorter would mess with the angle the carb has to turn to get around the shock as well.
I'll keep you posted on the progress. Hopefully this will fix it.
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