Joined
·
12 Posts
i have a 1999 z440 sno pro and i think i have some piston and rings problems. does anyone know what the compression be.
Wrong sled. The Z440 is fan cooled. I imagine compression should probably be in the 120s. 135-140 is into premium fuel only range.On a ZR440 Sno-Pro, expect around 135-140psi hot with a couple of good pulls of the starter cord. I measured mine over the past weekend before I drove it the first time to establish a baseline. You are using premium 93 octane fuel? What do the plugs look like?[/b]