Maintenance & Technical > KX500 Aluminum Frame Conversion (AFC)

KX500-KX250 manifold?

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brooksie:

--- Quote from: LundMx on March 14, 2013, 05:09:26 AM ---so with your knowledge in this manner, what do you think would work best with an 1988 kx500 motor and an 09-11 kx250f chassis? i need somewhere to start

--- End quote ---

Me too. And the airbox boot...

cmotodad:
Thanks for the photos to compare. The 250 manifold I have has the wings like the 500. I made a reed spacer with @ .050 taper to help move the carb away from the shock spring (pipe side thicker). I do not think it will affect the flow into the cylinder enough to notice.

LundMx:
http://www.ebay.com/itm/170997383355?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649



Is this a good deal?

LundMx:
So an 88-93 kx250 manifold, a custom cut spacer and what airboot do you recommend to try first?

cmotodad:
After reading some posts on the KX250F builds, it looks like they are close to the shock too. I tried to taper the reed spacer to help carb to spring clearance. It was a no go, it pushed the carb further back into the spring. I am now try to heat the manifold while spacing it away from the spring. Right now I have @ 3/32' from the spring but would like more. I may end up making a manifold (like Boyseen).

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