I was wondering if I can use Automatic Transmission Fluid in the crankcase?? I've heard of people doing this. Also, the sled has 3000 miles on it and I'm wondering when the top end should be done. It has 120lbs compression in both cylinders. thanks.
Some people use tranny fluid in their chaincase, but never put it in your crankcase. Maybe that was a typo? Not sure how you'd even get it in there. As for top end I'd run it another 2000 miles before I even consider top end replacement unless you're having a problem. 120 sounds a little low but still fine. Did you hold throttle open and pull over at least 5 times?
an amazing difference its got alot more snap to it and it pulls pretty good through all of the pawerband, only down side is that it can be tough trail riding it because it kicks in at 5200 but once you get used to it , for me anyways it was a night and day difference