Prop Shaft/Seal

Post here if you want to discuss a topic specific to the MV/32, MV/34, and MV/41.
Post Reply
bjgin
skipper
skipper
Posts: 68
Joined: Sat Aug 31, 2019 10:13 am

Prop Shaft/Seal

Post by bjgin »

(1) Is the propeller shaft 1-1/4"?
(2) Is anyone using a PYI PSS dripless carbon bushing propeller shaft seal?
BJ and Ginny Patterson
2004 PDQ MV34, #40, 110 Engines
FantaSea IV
The Villages, FL
duetto
admiral
admiral
Posts: 983
Joined: Wed Jun 15, 2005 11:18 am
Location: ICW (32043)

Re: Prop Shaft/Seal

Post by duetto »

it's been a longtime, so i don't remember the shaft diameter. do a search it's well documented on forum.

we've had pss for about 10 or 12 years, around 2000 miles. they work well. the most important thing though is: 1) shaft alignment 2) straight shaft 3) good cutlass bearing. any wobble will kill the seal sooner or later. we had tides but they don't tolerate any mis-alignment. pss is more tolerant but if you want a dry bilge see 1-3 above.
john & diane cummings
duetto mv34 #23
makala
skipper
skipper
Posts: 70
Joined: Tue Jan 17, 2017 11:18 am

Re: Prop Shaft/Seal

Post by makala »

Yes 1-1/4 shaft diameter.

See here for seals:

viewtopic.php?f=17&t=3701&p=15957&hilit=Pss#p15957
duetto
admiral
admiral
Posts: 983
Joined: Wed Jun 15, 2005 11:18 am
Location: ICW (32043)

Re: Prop Shaft/Seal

Post by duetto »

my comment should have read, " at least 20000 miles"
john & diane cummings
duetto mv34 #23
MikeH
admiral
admiral
Posts: 138
Joined: Thu Jan 07, 2021 2:42 pm

Re: Prop Shaft/Seal

Post by MikeH »

Hi BJ and John !

Last March, I installed new Tides seals, along with shaft service and engine alignment. The port seal worked ok - just a little water in the bilge at the end of the day. The starboard seal had more leakage.

I just got new shafts and PSS Pro's. The PSS Pro's are overkill and were difficult to install. I had to use 3 clamps to get the bellows compressed to specs. If there is a "next time", I would probably go with standard PSS.

I should be underway next week from St Pete to Stuart, and I'll post again with how they did.

Happy New Year !
Mike Hendry
M/V Easy Riders, Gulfport FL
2003 PDQ MV 34
The Legendary Hull #29
75 HP, 3 Blade
AlanH
admiral
admiral
Posts: 204
Joined: Mon Apr 25, 2016 3:55 pm

Re: Prop Shaft/Seal

Post by AlanH »

We have had PSS seals for about 5 years. We got tired of replacing the tides seals due to leakage. We had the shafts pulled last spring to have them checked and put new PSS seals on while everything was apart. They were not leaking.
Alan Hendry
Catbo
2006 34' Hull #81
75hp engines
MikeH
admiral
admiral
Posts: 138
Joined: Thu Jan 07, 2021 2:42 pm

Re: Prop Shaft/Seal

Post by MikeH »

The new PPS Pro's have worked great so far - no drips. The weather from St Pete to Stuart was very calm, so I haven't hit rough water with them yet.

The instructions said to expect a short break in period with some misting and graphite dust, but I did not get any of that. They worked great from the start !
Mike Hendry
M/V Easy Riders, Gulfport FL
2003 PDQ MV 34
The Legendary Hull #29
75 HP, 3 Blade
MikeH
admiral
admiral
Posts: 138
Joined: Thu Jan 07, 2021 2:42 pm

Re: Prop Shaft/Seal

Post by MikeH »

I gave the PSS Pro's a good beating during a rough crossing from Key Biscayne to Bimini. They performed great !
Mike Hendry
M/V Easy Riders, Gulfport FL
2003 PDQ MV 34
The Legendary Hull #29
75 HP, 3 Blade
Post Reply