Exhaust thru-hull fitting

[mister_j]

Just got ahold of a beautiful new/old O'Day 35, and the first order of business is to secure the exhaust thru-hull fitting, which popped a screw and is leaking. Fortunately, she's on the hard for the winter, so no rush factor.

Has anyone refitted an exhaust on a 34 or 35? I'll be looking at it closely for the first time next week, but I'm wondering if I should cut some backing pieces and bolt it through, rather than try to rescrew it. I'm thinking of 5200 to seal it up, but don't know if there'd be a problem with that stuff right up against the exhaust pipe.

Any advice would be appreciated.

Jeff

 

[Richard19068]

I just used bigger screws and 5200 about 6 years ago and it still looks fine. Now I worry about getting it apart if I ever have to. I would probably use 4200 if I had to do it again. I don't think the temperature is a factor. The exhaust at that point, at least on my boat, is not very hot and the data sheet for the 4200 fast cure shows a working temp up to 190 degrees f.

 

[rajhnsn]

I have not done this job but welcome aboard and good luck with a great boat. I do agree that the 5200 will make it very difficult to take apart if you ever have to. I noticed that mine was moved higher than the original area that it exited the transome by a PO. I suspect because the stern was sitting low in the water after adding four golf cart batteries for the house bank just in front of the fuel tank.

 

[SailingCal21]

Don't mean to hi-jack the post here, but 4 golf cart batteries in front of the fuel tank!

Do you have some pictures that you could post. I'm planning on two but am worried that I'll conceal the prop shaft hose and stuffing gland.

 

[rajhnsn]

These pictures show the battery box that a PO installed. He did a nice job. The batteries fit tightly along with a few shims and they are held in place from the top by wood strips. The entire case and wood strips have been covered in resin as well. There is pretty good access to the shaft and hose. I don't have pictures of that area but the next time I'm at the boat, I'll take a few.

 

[Winters Dream]

Jeff,

If this were my boat, I would fill all of the existing screw holes with a putty that hardens like steel and sticks to any substance. I can't think of it's name but it's sold an almost any popular boat store or catalog for about $12.00. It's a bottle packaged in a small white box with blue lettering. I have some but it's put away for the winter and I can't easily access it now to get the name.

Once this stuff hardens, you can re-drill the screw holes to be smaller than the present screws so they will grip and screw the exhaust fitting back into your boat. By doing this, you will be able to remove the screws and the fitting if it's ever necessary.

Bob Lendvay

 

[25yearslater]

If I may be so bold. Why did the screw loosen? Screws seldom release without an underlying problem. Did Oday use the plywood core in the transom on this model as they did on other models? A quick check of that area for decay might be in order. If that is the case West Systems has an excellent 'How to' on hardware bonding. It's a little more work but could save you the bigger work down the line.