Well I finely got my super jet on friday night. it's a 98. the guy that I bought it from lives about 9 hour away and delivered it for me. When the boat was droped off I didn't have a compression gauge to check the compression.so I didn't know about the problem till Saturday. I still haven't given the guy money yet so I could give him the ski back if it is no good. My problems is that when I did a compression test on the motor I got some bad numbers. pto= 165PSI, Mag =135 PSI. the boat has a ADA head on it and after pulling the head I found out that it has 33cc domes which should produce 200 psi of compression from ada website. I looked at the cylinder wall of the mag pistions and there are some very very fine marks, I can feel them when I run my finger on the wall. Would this mark make me lose 30 lbs of compression? My other thought for the compression being lower for both pistons, under 200 llbs, was that the cylinders were bored. This would cause the compression to drop right? Is it possible that the compression was lower on the one cylinder because of a bad o-ring? any sugestions on were one could find o-rings? Are they somewhat standard O-rings? or is it best to get a set from ada?
I hope that I didn't take buttkicking on buying this super jet.
Thanks for your guys help
Nathan
[ April 07, 2002, 11:46 PM: Message edited by: cdooguy ]
I hope that I didn't take buttkicking on buying this super jet.
Thanks for your guys help
Nathan
[ April 07, 2002, 11:46 PM: Message edited by: cdooguy ]
Comment