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
Finished upgrades on a 05 220 - jetting problems?
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="rus23, post: 1294155, member: 90907"] I think the main mau be limiting fuel flow at lower throttle openings. I have been told by very experienced two stroke racers to get the main jet about right before playing with anything else, the way you described it sounds like its lean on top. These engines run the best and make the most power just before they seize from getting too hot due to lack of fuel. I roadrace an aircooled rd 400 and a water cooled yamaha rz 350 and the radiators really make the jetting easier, the rz is a lot more forgiving. THat being said, my racing involves long straights that require full throttle 6th gear runs for 8-15 seconds, I've seized the air cooled rd at the end of front straights twice now due to improper jettiing. I have a permanent bump on my left shoulder thanks to one of them. The trail riding I do rarely involves full throttle straights, just a quick blip thru the gears and turn, so the jetting is not nearly as crucial to engine life. Get the main right and then move on, up in size(may need a 155, I have a 160 in my KDX 220)till it runs poorly and then back down one or so. But, thats just me, I am so used to swapping jets I do it without thinking. [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Finished upgrades on a 05 220 - jetting problems?
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