...YZ250's are 2 stroke
oh really. i thought they were 4 stroke. my bad
...YZ250's are 2 stroke
oh really. i thought they were 4 stroke. my bad
a 2000 YZ250 motor has gotta be in the 40-45rwhp range... i guess thats in a bike chassis though not a quad chassis.. i can see what your saying about it being a bit much for the chassis in stock trim.. suspension will make or break what your doing there. going fast and keeping it are more in the setup than anything else.. all the power in the world doesn't mean sh*t if you can't get it to the ground effectivly. i was going to build this same thing a while back.. i have an OLD YZ motor.. i beleive it's a 87 yz250 motor thats been worked.. came out of a micro sprint race car... anyway.. i'd put some seat time on that thing.. if you can weld what i'd do is take the stock swinger and cut it.. stretch it say 4 inches and try it.. play with the gearing a bit and try maybe a couple different sizes of tires.. if you've still got issues.. stretch it to 6".. and so on.. when you get to the point that you like it.. then buy yourself a nice swinger.. your best bet is write down the initial setup.. then you can always go back to that "base setup" and start over. that also works well for jetting.. have a "base jettign point" to go back to if you get away fomr what your shooting for.. also.. with this setting up the chassis or with jetting.. only make 1 change at a time. otehrwise you'l never know what fixed your probel for next time.. if you have a local track try doing some of this setup during a test and tune session at teh track.. then you'll see on your slips if your getting faster or slower with each change.