Maintenance & Technical > KX500 Original

Kx500 snowbike more power!

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Apetty:
40mm Lectron

1901306708:

--- Quote from: Apetty on August 20, 2017, 01:42:12 PM ---Update: finally some headway. Been talking with Jason from JT Engine works and I'm going to send my engine off to him! From talking with him I got the impression that he has forgot more about the kx500 then I'll ever know. Still not sure exactly what we're going to do to it but for sure porting, big bore, crank rebuild balance, transmission gone through, new clutch basket and clutch etc. very excited to see how this turns out. In response to the last reply it is always awesome to hear from another kx5 snowbiker. I was thinking of going with the new electric start from pantera which comes with the pvl ignition but from your comments I'm alittle afraid. I don't want a finicky system. The last thing I want to do is get stranded in the back country. Have you had many problems with your pvl or what do you think of the e start? I'm running a Lectron carb with an avid carb heater setup with thermostat which worked great last year. I've heard a tunnel cooler works better but so far no problem for me. I'm also running a gnarly pipe does it pay to get a custom one?

--- End quote ---

I have had mine die twice on me. no notice, just boom no spark. almost needed a chopper once. was not fun. i have a spare one wired up ready to go at the truck now, so worst case i can double out and come back and do the swap so i wouldn't need a chopper. its all related to coolant temp. it must be when the water inside the stator turns to steam or something. both times i was working it hard and it was warm. i would say if you had a way to keep your water temp below 170F all the time you would be pretty safe. Yeti makes a nice cooler. i'm going to try that this year.

e start would be great but i see drawbacks. first i think they use a keyway. that means you cant adjust your timing anymore. thats an issue. there are big losses and gains with timing changes once you start playing around with the cylinder.

in our testing the 44 lectron makes 2hp on a stock motor. roughly double that on something modified quite alot. kevin does a good job.

there are gains with pipes. in stock form, its really all about making peak torque over a larger rpm range.

to me, a larger bore doesn't make much sense and the last thing i would focus on. the bore is already too large and the cylinder cant fill it properly. now you add in elevation and it gets worse.

those are my thoughts man. hope they are half helpfull.

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