Maintenance & Technical > KX500 Original
a working compresion release is here
jfabmotorsports.com:
Forgot to mention...I might kick it in bare feet on you tube in a bit....maybe. :-D
Danger4u2:
Your brave, wrap the foot peg with duct tape.
kaw rider:
Jerry
That valve looks more heavy duty compare to the other one. I think this one will work great for guys that run nasty compression.
jfabmotorsports.com:
The compression release lever that came with the generic valve kit was a small lever like the one that was used on the YZ426. I just installed a Moose lever set that had a Hot Start lever incorporated into it. It works and feels ok but I think the ASV style lever might be a little better. The little lever that came with the valve worked great but was not too sanitary.
JFAB
Larry Wiechman:
Some blurry photos of my version of the big 14mm compression release installation. This was to prove out an installation on a CR500 that had really tight space limitations.
Long ago, these cable operated valves were used on 2-stroke flattrackers as an engine brake. Run up to the corner, pull the lever and flick'er in. Made for nice, easy slides and a cool farting noise as the valve bled off cylinder pressure. The down side in this application was that the motor was sucking in dirt on the intake stroke. Then someone produced a valve that had small metal reed valves covering the discharge ports. Genius! No more Filtron foam wrapped around the compression release and it even functioned better, because now there was also resistance as the piston moved down. I've searched for a supply of the one-way valves, but I think they died with the 70's.
Simple solution, don't ride around at the back of the pack doing brake slides no matter how much fun it is!
Larry
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