new member crossing over from street bikes to atv's can some one help me with jetting my 05 raptor i have a white bros. E series silencer only and k&N filter i am at sea level to 500 ft for riding. I was looking into just buying the jets from the dealer seems a little bit cheaper than buying a dynojet kit. any help would be appreciated.

 

150/155 might get you started right

 

cool thanks does dyno jet jets differ from the one from the dealer? just curious

 

Try a mikuni 165 in the left carb and a mikuni 170 in the right . Start there you may need to move the needles next .
Try one thing at a time .
Good luck

 

so mikuni is the way to go. what are some signs to look for if i am running lean or rich? just curious once i put the jets in what steps would or could be next? i will defanetly have my buddies over that know more about jetting than me. just wanting some info before i get in deep on this

 

If you are looking for a Raptor Mukuni jet kit, look on ebay. I saw one for sale from a guy named Mike I think in Missouri for $59.00. Also if you go to his personal website they are even cheaper. Goodluck

 

It's better to start alittle high. I have 150/155 in my wifes stock rap with K&N pro flow and the baffle out.

 

Dont buy a jet kit, its a waste of money. Use the Mikuni jets from your dealer.

If you are too lean you will backfire on decelleration and your plug will look white. If you are too rich your machine will bog out and your plug will look black.

 

Be sure to remember what kind of jets that you are getting and don't mix them. If you get the Dyno jets you should run 146 and 148 and will have to get the new needle, but if you get the mikuni, i'm not sure exactly what you should start with but I know they run in bigger sizes and I don't think you need to change the needle. Maddog already said how to check it to see if they are right. Also, it greatly affects the jetting if you have the airbox or not and if you leave the top on or not. You will have to go a lot larger if you do away with either. I have the same wb slip on and had the 146/148 in it, then got the pro flow and got rid of the box and now I have 175/180 in it. Also, get the pro flow and not the K&N drop in filter so that you can do away with the lid or airbox later if you want to. You can get the proflow with the K&N or the foam filter. If I knew what I knew now, I would have never bought the kit, just the jets.

 

can you steer me in the direction of what a proflow is and where to buy sorry for the dumb questions like i said i am a sportbike racer looking to have something to play with in the winter. so not yet familiar with some of the talk YET! also i was searching for on how to jet and found the GREGV article but there are no pics? anyone else can help? I am Mechanically inclined and want to do this my self with some buddies. so any help is appreciated but i will go and get the 150/155 and go from there. i heard the jets were only like a few bucks a piece anyhow.