Home
Basic Dirt Bike How-To's - Video
Dirt Bike How-To's - Video
Living The Moto Life - Video
Bike Tests | Shoot-Outs - Video
Forums
What's new
Latest activity
Log-In
Join
What's new
Menu
Log-In
Join
Navigation
Install the app
Install
More options
Close Menu
Forums
Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Air Screw adjustment observation
Reply to thread
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
[QUOTE="skipro3, post: 688378, member: 37632"] I thought I would pass along my experiance and observation when adjusting the air screw (AS) when riding at various elevations. Feel free to jump in and comment on your experiances as well. I have a 1999 KDX220 with weisco piston, air box lid removed, VFII reeeds, FMF -35 pipe and SAII. I have noticed that when I change elevations, that I need to turn the AS counter clockwise about 1/4 turn for every 1000 feet of elevation rise. I really notice the performance increase when there is a long uphill and I have to chop the throttle to make a turn mid-mountian. At that point, my rpms drop as my speed decreases so I can manuvuer the turn, then when I exit and get back on the gas, the engine bogs a little. I don't want to shift because at some point I will need to upshift again and will loose my forward momentum. By keeping my AS set for the proper elevation, I can get the bike to pull strong at the lowered rpm's without bogging down to a stall and not needing the clutch. I mention this because my riding partner has traded his KDX to a KX500. That thing has stock about 63 hp so he never hardly shifts on hills and turns anyway. So I was thinking that maybe an upgrade to a larger engine might be in my future too. With this simple adjustment, I can keep the low rpm end of my hp range at it's peak. A side benefit and another way to determine if the AS is set right, for me anyway, is that my bike is hard to start if shut down warm for a few minutes, then I try and restart it. Like when you are waiting for someone to catch up or you stop to check your map. It takes many more kicks to start if the AS is set too rich. When I adjust the AS out (CCW), to increase air mix, the bike starts much easier. Anyway, I thougt these observations might help someone else out there with a KDX220 thinking they need to trade up to a larger engined machine. [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Air Screw adjustment observation
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top
Bottom