Stuffing Box Hose

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Jan 8, 2007
8
- - Punta Gorda FL
While on the hard I decided to replace the stuffing box hose and found that I needed to replace the cutless bearing which led to replacing the strut. Then I found that the manufacturer of the original strut went out of business. I was not able to find a replacement for the strut so proceeded to repair the strut as best as possible. Since it required alignment with the shaft log I decided to inspect the shaft log which had sings of corrosion. After removing the shaft log and looking for a replacement I was not able to find the original manufacture for that one either. I find that the shaft log has an ID of 1 1/4 inch not giving much clearance for the 1 inch shaft, and the OD for the hose barb is 1 5/8inch. Buck Algonquin carries stuffing box assemblies as well as hose replacements, but its either 1 3/4 or 2 inch ID hose. The old hose had an ID of 1 3/4 inch, but the new hose from Buck Algonquin I ordered does not fit tight enough to provide a reliable seal. After calling Buck Algonquin, they advised that the 1 3/4 hose should not be used on the 1 5/8 inch barb.

So the question remains, what kind of hose should be used for this application? Marine wet exhaust hose comes to mind, but nowhere in the literature for this kind of hose is there any mention of using it for the stuffing box. Trident Marine and Shields both make a soft wall wet exhaust hose that has an ID of 1 5/8 inch, and has the appearance as the best candidate for the application. Still, I wonder if there is an alternate I am missing.

I considered replacing the shaft log and the packing gland assembly with one that is provided by Buck Algonquin, but low and behold it will not fit in the allotted space on the Hunter 36 without major modifications. So am somewhat stuck with the original design.

Any thoughts on this would be helpful
 
Jun 2, 2004
5,802
Hunter 37-cutter, '79 41 23' 30"N 82 33' 20"W--------Huron, OH
I am surprised at that. Both the lack of hose and the ID of the shaft log. I don't remember exactly but it seems like I had more than 1/8" clearance. I think a 1 and 3/4" ID is normal for the stuffing box hose on one inch shafts. Cannot imagine why the H36 would be different.

When I replaced the engine on my H37C I rebuilt the stuffing box and had no problem getting the hose. It was just some local marine shop on Lake Erie, same people who built my shaft and coupler. It is not the same as radiator hose. Do not substitute.
 
Jan 8, 2007
8
- - Punta Gorda FL
Clearance

Thanks for the reply Ed. You can imagine that with a 1/8 inch clearance the strut has to be aligned very close with the shaft log. Even then, with good alignment, Engine vibration at low rpm can be a problem.

Ernie
 
Oct 13, 2007
179
Hunter 37.5 Plattsburgh
I believe you can purchase the correct hose from Buck Algonquin.
 

Ed A

.
Sep 27, 2008
333
Hunter 37c Tampa
you can use marine exhaust hose with no problem. it is approved for underwater use and will do just fine. Shields makes really good stuff.

Ed
 
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