[C320-list] Fw: Leaking Muffler - Repaired

[JJ Morrison]

I just read recently that sailors are clever,innovative, and frugal; this proves the point and I especially subscribe to the third quality!
Well done Mike!!
Cheers
JohnM
#574 1999 
 
> Date: Sat, 30 Apr 2011 09:25:50 -0700
> From: wmo48 at yahoo.com
> To: C320-list at Catalina320.com
> Subject: [C320-list] Fw: Leaking Muffler - Repaired
> 
> I thought I would follow-up on my repair job since more than a few members 
> expressed similar frustrations (Catalina still can't find a replacement).  I got 
> the muffler out okay, thanks to Allan Field for his hair dryer suggestion to 
> soften the exhaust hose.  I ground down the flange edge to expose the seam 
> and routered the area with a dremel tool.  I pasted marine epoxy on the edge and 
> let harden overnight.  In reviewing the muffler installation, I didn't like the 
> gellcoat to gellcoat contact between the muffler and the mounting pad.  I bought 
> some 1/2" vinyl tubing and cut out a 1/4" groove along the side.  I lathered the 
> flange edge again with epoxy and formed the tubing over the edge forming 1/8" 
> cover around the flange edge.  I had routered out an old piece of plywood, 
> making a 1/2" canal, which made a nice jig to hold the tubing onto the flange; 
> weighted the muffler down with a bucket of sand and let it cure overnight.  Ran 
> the engine this morning for a hour, no leaks and now I have a vinyl gasket 
> between the mounting base and the muffler, to absorb vibration.  Total work time 
> (not count beers consumed while waiting for epoxy to cure overnight) : 4 hours.  
> Total cost: $14 ( 2 tubes of marine epoxy from Home Depot and 10' of tubing). 
> Mike
> "Amanda Lu"
> #508
> 
> 
> 
> ----- Forwarded Message ----
> From: Mike Ott <wmo48 at yahoo.com>
> To: Catalina 320 Association <C320-list at Catalina320.com>
> Sent: Tue, April 26, 2011 4:02:07 PM
> Subject: Leaking Muffler
> 
> 
> While doing my pre-lunch engine check on the Yanmar, I noticed water building up 
> around the shaft stuffing box. Tracking it back to the muffler flange, I was 
> hoping beyond hope that all I had was loose exhaust hose clamps, I tighten 
> everything ... no luck.  Mopping up the water I noticed seepage under the fwd 
> flange of the muffler.   Pulling that sucker appears to be the only answer.  
> Anybody have this fun before?  Any nice ease hints? I think my approach at this 
> point would be to grind the area, Marine-Tex the seam, and then glass over 
> with some fiberglass mat or cloth.  Pulling the exhaust hose from the wet elbow 
> to the input nipple on the muffler looks like it is going to be fun (almost as 
> much fun as pulling it back on).  Good thing I have a couple of weeks until my 
> launch date.  Would welcome some opinions / advice.
> Mike
> "Amanda Lu"
> #508