How do i jet my yfz 450

Longer Engine Life- The jet kit is a performance upgrade that allows the engine to run cooler which increases engine component life.

Lower EGT's exhaust gas temperatures If you have installed an aftermarket, or modified the stock exhaust or intake, this is needed or you will damage your engine. Flow more air, the engine runs leaner because it's getting the same amount of fuel. Just want to run this by you guys really quick before I go buy jets.

I'm thinkin' just goin' up on the main a couple , ? Question for you, in your post you said that you think sand got through the intake possibly? I would check to see if the carb is clean before you run it anymore. If you got sand in it, you have sand in your motor or will.

There was a small lacquer looking substance in the area where the slide would hit if it could fully close off the intake hole. I had my stator go out on my These arent THAT sensitive to jetting. Anything less than on a piped YFZ is too lean. I tried jetting and everything under the sun for weeks until i changed the stator and its been great ever since.

Another thing is the flywheel. If you put a trailtech flywheel on it then you are almost guaranteed to have problems. Those are garbage. Hope it's not the stator, but we'll see. I got dirt tire for testing on the street.

I see how it would be better by getting rid of the squashed stock rubber duct from the filter to the carb. Plus my GF putts around on it when she's not reading a book. Right on, Good luck with the jetting. Just dont test it out on the street the police don't approve. Oh and runs way better with the gas on. You can post now and register later. If you have an account, sign in now to post with your account.

Paste as plain text instead. Only 75 emoji are allowed. Display as a link instead. Clear editor. Upload or insert images from URL. Returning users Sign In. YFZ Jetting. Share More sharing options Followers 0. Reply to this topic Start new topic. Prev 1 2 Next Page 1 of 2. Recommended Posts. Randog Posted July 25, Posted July 25, edited.

Main size, Pilot size, Needle position, Turns out on the fuel screw? I did call Pro Circuit and got some info. Link to comment Share on other sites More sharing options TheAlaskan Posted July 25, Posted July 25, I can't remember, Dan set it up for me on his dyno.

TheAlaskan Posted July 26, Posted July 26, Posted July 26, edited. Randog Posted July 27, Posted July 27, He said they know jetting for their pipes. He said to go with what Pro Circuit said. Which was: NCVQ needle on 4th groove from top main 40 pilot 1. We rely on the most cutting-edge technology to treat infertility, complemented by third-party reproduction methods such as in vitro fertilization, surrogacy and artificial insemination.

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