Missing Carbon Ring in XP?

[ZeroTolerance]

My XP I just bought never had a carbon ring? The driveshaft is a straight driveshaft with no grooves in it for o-rings or c-clips. At the Rubber boot it enlarges then shrinks back down in diameter right after it goes through the Carrier (Grease Fitting bearing). Is this normal for it not to have a carbon ring? Also, my jetski has been rebuilt by Perry Performance Group stage II FYI.

 

[timmyboy76]

gotta picture.

 

[ZeroTolerance]

No pic sry. I removed the pump and driveshaft from the ski. All that came off the driveshaft was the seal bearing. Thru hull fitting is still in place with the rubber boot attached to it. The other end of the rubber boot attached to the seal bearing with nothing in between and nothing in front of the seal bearing. I got a new one (thru hull fitting) that is metal but it looks nothing like the old plastic one. The plastic one is still good so I'm just going to leave it in there till it breaks. Also there were no o-rings or anything just the seal bearing. I ordered 3 new o-rings a seal bearing carrier, and a carbon ring. ????

 

[slipot]

1996 drive shaft

This is what my 1996 looked like....yours must be a customer job.

 

[ZeroTolerance]

My Title says the jetski is a '96 but I have a '95 driveline in it. The seadoo was fully modified by PPG for racing with their Stage II setup. So I don't know if my title is wrong or if they replaced my driveline with a '95

 

[Dr Honda]

If you have the drive out of a 95… then you may not have a carbon ring. 96 is when they started using them. 95 and earlier used a bearing pack, and lip seals. In that case… you would have 2 grease fittings on your boat. The first one would be on the PTO where the D-shaft goes into the engine… and the second would be in the bearings at the end of the boot.

The bearings and seals CAN live forever. If they are built right… and you keep it greased with good synthetic marine grease… you will never have a problem with leaks, or cavitation. BUT… the second that bearing pack dries out, and gets water in it… they can seize and rip the boot they are mounted to. When that happens, you have a 2” hole in the bottom of your boat that will sink you fast. That’s why they went to the carbon seal. It’s fragile, and doesn’t last for more than a few seasons… but it’s almost impossible to have a catastrophic failure.