Not sure regarding the 33-2 but I was able to just fit a PYI shaft seal in my 34. It took perhaps an inch or so more space along the shaft than the original stuffing box. Once installed and assembled with the right pressure on the bellows I have an inch or so between the PYI and the end of the coupling.
I installed it this summer after buying the boat because the stuffing box was in rough shape so that needed replacing anyway - it was brutal getting the coupling off of the shaft (I had to cut it off with a grinder and then have a new one fit and faced to the shaft - which apparently is standard practice although I didn’t know that when I started the project). So it isn’t a small job in the end. Also, there was just nearly enough room so I had to assemble the PYI loosely with the shaft just poking through it, then put the new coupling in place and tap the shaft into coupling (one person outside tapping, the other inside keeping it aligned and watching for the dimple when it is slide in far enough). I got a split coupling (it is actually only partially split) which helps a lot but it still take hammering on it to get it through. Definitely recommend the split coupling though and I am hopeful that I might have more luck pressing it off next time it comes to that. The final task was running a 3/8” hose from the PYI up 2 ft above water line. You want to keep it as centered as possible so I went to the and then up between the cockpit and the transom inside the hull and secured it to one of the air vents with a few zip ties. Doesn’t leak or get hot so I am happy with it overall. But it was a big project and the bellows are supposed to be replaced ever 5-6 years I think. I would definitely take a look if there is an option that doesn’t require disassembly of the shaft. Nathan Post S/V Wisper C&C 34 Malden, MA > On Oct 18, 2018, at 9:14 PM, Josh Muckley via CnC-List > <cnc-list@cnc-list.com> wrote: > > I have a Max-Prop, a R&D coupling isolator, R&D engine mounts, and I have a > PYI shaft seal - all the same company. I generally like the engineering and > customer support and like the shaft seal fine. That being said, I would > suggest taking a look at the Sailor Sam's shaft seal. As the vendor > described to me at the boat show you can evidently replace the "packing" > (carbon rings) with it installed and in the water. Some of the models do not > require the tension of a rubber bellows but rather have a physical metal > spring that maintains pressure. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > On Thu, Oct 18, 2018, 8:49 PM Adrian Humphreys via CnC-List > <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>> wrote: > Any 33-2 owners with the PYI dripless shaft seal? > > Will it fit? > > We're looking at overhauling the packing gland and considering replacing it > altogether. > > Thanks, > > Adrian Humphreys > > > > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray > <https://www.paypal.me/stumurray> > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray >
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