thought id try something differant on brothers new rev, had a zx with the pipe can porting but that roads gettin pricey big bore sleeper sounds fun.

hasnt any of you doo guys put a bigbore in a 800?

I'm looking for the same info. What to know who is doing the best work.

Not much out there when it comes to Ski-doo BB's
Lots for AC and Poo, but then they need all the help they can get

You can try Crankshop they have a 900 kit "really around 860cc" that rumored to run in the 160hp range and runs about 3500us.

Cpi sold some but have heard very little about them in the last year.

One other name that I keep hearing is tom warga over on the snowwest board, he is rumored to be building a BB with stock cylinders somewhere in the 880-920 range.

I do know you can bore the Doo cylinders out 2mm and have them re nikied to come out at 840cc with somewhat of reliability.

Keep hunting .

Call Bill Cudney. He may be able to help you out. He really knows his dung.