Jetting for my YZ-450F in Cal Desert???
Posted November 16, 2008 - 10:35 AM
I typically ride in areas of the so cal desert that range from 2800-3200 Feet and the bike has stock jetting. I have looked at the jetting thread and did not really find anyone with settings set up for the so cal desert or these altitudes. The bike seems to have a little bit of a bog off the bottom and slight pop on decel. I have done some research and went ahead and ordered a fuel screw from Zip-Ty. From what I have read it seems that a little fuel screw adjustment will clean up the bottom bog...any input? Being my first 4-stroke I do not really have any prior experience to judge how cleanly my bike is jetting. If anyone has some experience at these altitudes with so cal desert weather, It would really help out.
Only engine mod so far is a PMB spark arrester insert. Ordered a Clarke 2.6 (like the 2.6 compared to the added bulk of an IMS 3.1), a GPR stab., a GYTR flywheel, GYTR skid plate, and some handguards. Should be a pretty good desert sled after that.
Posted November 16, 2008 - 11:11 AM
it was lean stock. try 165mj, 48pj, a/s opened just past popping on decel, everything else stock. should be good to go.
Posted November 16, 2008 - 06:21 PM
Posted November 16, 2008 - 07:02 PM
That was the basis for my recommendation. If you spend more time at 2500-4000 than at 2000-3000, go with a 162 or try it with the 160. The needle and pilot are the secret.
Looking for someone in the 2000-4000 ft range with a fairly stock bike.