jetting for the dunes

[LONG-ROD]

hey just wanted to here everyones 2 cents on if jetting for the sand, should you put a bigger main jett if it is right on just cause you are going to be rideing in the sand. I have read you need to because the sand puts more of a load on the engin, or do you run it on the lean side for that little bit of extra power?

[dunatic]

the biggest effect is going to be your altitude. Since your at sea level and most likely going to be riding at a comfortable 70 degrees in the summer time and a fairly high humidity level. youll want to step up 1 jet size per 500 feet of altitude you drop. at the same time you can advance your timing 1-2 degrees because of the lower temps and hig humidity. This is just a rule of thumb and by no way a cut and dry answer to you issues.

I would take with you a couple of new plugs and do a plug chop the moment you get there.

Assuming your running a Keihen carb (PWK or AirStryker). I would start with the following:

175-180 main jet
50-52 pilot
DEG or DEJ needle in the middle position
air screw turned out 1.5-1.75