Maintenance & Technical > KX250 / KX125
Best low end-mid pipe for 98 kx250
Foxx4Beaver:
good write up, more info on the governor than I was aware of...I'm looking forward to experimenting on mine, but it won't be for a couple months, til the weather gets better/warmer...we have nearly 20" of snow on the ground right now and it's a balmy 14F :-(.
dirk_411:
Same here man.
The Tecate 4 governor spring is used and is measured removed from the mechanism.
Height 24.05mm
Width 25.30mm
Washers/bearings measured around 27.97mm
Stainless steel balls I believe are 5/16"
Would I be correct in saying the weight of balls and the rate of the spring effectively determine when the power valves operate? If you went to heavier SS balls and a softer spring basically your PV's would operate at a lesser RPM? OR lighter SS balls and heavier spring rate they would operate at a higher RPM? Am I correct?
If anyone can throw the kx250 and the kx500 measurements at me that would be great. Include year and model
Foxx4Beaver:
I think you're theory is spot on...it could be tricky finding SS balls that are the same diameter(for clearance in the governor reasons) that are heavier/denser...but as you stated, spring rate will play a major role in that also.
Very interesting.
dirk_411:
After taking a look I noticed that the majority of kx250's used 3/8" SS balls. There were a few kx250's in the late 80's to mid 90's that used the same 5/16" as my tecate 4. I guess the next thing would be to know the weight difference between the 2 SS balls and the spring rate between my T4 and the various model kx250's. I think im going to start with the 98-99 kx250 governor mechanism and see what can exchange
Goat:
Good info. Now I want to play around with my 500 and kdx governor. I'm in the same boat as Fox with a ton of snow on the ground and really cold temps.
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