Carbon Ring to Seal Carrier changeover

[stickshift69]

Been searching around on the carbon ring setup and comparing it to the older setup with a seal and needle bearing. I like that design better, even tho I sunk my 93 cuz of it. What parts would I need other then the seal carrier/hose to the hull to change my 96 XP to the older design? Not sure if the 96 driveshaft will work with the needle bearings. Was thinking one from a 1995 but not sure. Any help with this would be great.

Thanks

 

[seadoosnipe]

Probably not....

Been searching around on the carbon ring setup and comparing it to the older setup with a seal and needle bearing. I like that design better, even tho I sunk my 93 cuz of it. What parts would I need other then the seal carrier/hose to the hull to change my 96 XP to the older design? Not sure if the 96 driveshaft will work with the needle bearings. Was thinking one from a 1995 but not sure. Any help with this would be great.

Thanks

I don't know if you can change from one design to the other because of the design of your shaft. If you were changing to the older style, you'd have to find a shaft to adapt to that motor. The 96 motor being a 787 probably has a different spline or shaft setup than an older motor like a 657 or 587. So, just not to sure if you can do that or not.:cheers:

 

[Chester]

The splines are the same on all Sea-Doo 2-stroke engines. You need an 18 inch long driveshaft. You can use your current shaft as long as the bearing and seals don't ride on the groove for the clip. You should also smooth down the sharp edges of the groove so the seal lip doesn't catch when installing the driveshaft.

Chester

 

[seadoosnipe]

So cool.....

The splines are the same on all Sea-Doo 2-stroke engines. You need an 18 inch long driveshaft. You can use your current shaft as long as the bearing and seals don't ride on the groove for the clip. You should also smooth down the sharp edges of the groove so the seal lip doesn't catch when installing the driveshaft.

Chester

I figured you or PWCdoc would know. I knew the 717 and 787 were the same but not sure about the rest. The drive shaft for the needles compared to the carbon seal ring system? ... I figured would have to be machined/modified.

I have never attempted this and I think it's the very first thread of this nature. It's great to see something new now and then and good to see there was another answer...........:cheers:

 

[stickshift69]

I was thinking the shaft from a 95 xp720. Does anyone know the length of that shaft? Not too worried about having to change the driveshaft if mine is nicked up. The rubber hose can be cut to length if the sealing surface is in a different spot, but I dont think it is anyways. My main concern was the sealing surface diameter. Did the 1995 XP800 come with the seal carrier or carbon ring? That may be another way to figure this out

 

[stickshift69]

I just looked on a parts fiche and it shows the 98 XP800 uses the old design but doesnt list the part numbers. I looked in my Dennis Kirk book and it lists on for the 96 but it never even came with one.

 

[Chester]

The 95 XP (720) has a 20" shaft and the 95 XP800 has a 21" shaft. This was the only year that the XP's had a 3" pump extension that gave better top speed. Unfortunately, the only models that have the right length driveshaft for you, use the new style carbon seal.

Chester

 

[stickshift69]

Im gonna have to measure the driveshaft to see if it is the right diamater for the needles

 

[Chester]

It is.

Chester

 

[stickshift69]

Then its just a matter of cleaning up the driveshaft, taking out the carbon ring and putting in the seal carrier. Easier then I thought...

 

[voodoo]

I spotted Chester answer this a few years ago and it looks like the 787 uses the carbon ring, the size of the shaft is exactly the same, but use something like 400 garnet sandpaper to take the sharp corner from the clip grooves so the seal does not fold over, why the carbon ring? higher speed engine I guess, the tube is the same size from the hull, leave the hull side loose so the bearing failure does not result in replacing the hull sleeve and grease this every month or so.