[C320-list] Muffler leaks and drainage

[Warren Updike]

Since our muffler doesn't seem to drain via the petcock, in order to over crank the engine, I close the raw water thru-hull to prevent back-flow. Should I approach 30 seconds of cranking, I will also close the thru-hull. 

Warren and Pattie Updike
1994 C320 "Warr de Mar" #62
Middle River, Chesapeake Bay

-----Original Message-----
From: Dick Walker [mailto:dickwalker at att.net] 
Sent: Saturday, January 14, 2017 8:28 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Muffler leaks and drainage

Has anyone ever used The drain?  Out first boat was a C-30 '86.    Same design 

On that boat I replaced I replaced the muffler with one off the shelf from WM 

THE BIG DEAL is know how much you can crank the starter.   Overfilling the tank would send water back up stream and would not be good 

Cheers



Dick Walker
740 Olive Ave.
Coronado ,CA 92118
619.435.8986



> On Jan 14, 2017, at 16:28, Troy Dunn <troutwarrior at gmail.com> wrote:
> 
> Warren et. al.-
> 
> We just sent our muffler to CD in November.  The cost of the muffler and
> drain valve which is sold separately and which you have to tap your self is
> almost $500 by the time you factor in shipping both ways.   We should be
> receiving the muffler in the next month or so I suspect.
> 
> Troy
> Hull #514
> 
>> On Sat, Jan 14, 2017 at 3:58 PM Warren Updike <wupdike at hotmail.com> wrote:
>> 
>> FYI a Chesapeake neighbor 320 #4 has replaced his Catalina muffler with a
>> Vetus "Water Lock" muffler. I checked with him a few times over the years
>> and he remains happy with it. There are other brands out there. Also, some
>> available on Amazon and marine online stores.
>> 
>> I don't know the cost of a Catalina muffler. The production units seem to
>> run in the $400-700 range. I haven't really looked into it.
>> 
>> 
>> 
>> Warren and Pattie Updike
>> 
>> 1994 C320 "Warr de Mar" #62
>> 
>> Middle River, Chesapeake Bay
>> 
>> 
>> 
>> -----Original Message-----
>> 
>> From: pat reynolds [mailto:lorasalum at yahoo.com]
>> 
>> Sent: Friday, January 13, 2017 3:08 PM
>> 
>> To: C320-List at Catalina320.com
>> 
>> Subject: Re: [C320-list] Muffler leaks and drainage
>> 
>> 
>> 
>> if you have a muffler or muffler hose leak you should be getting water in
>> the bilge and you could actually see the leak when the engine is running.
>> It seems unusual that the drain cock would be open and you not get water in
>> the bilge, unless it was clogged.  if you are not seeing water coming out
>> of the muffler or hose your smell is coming from elsewhere     as far as
>> mufflers go if you got 20 years out of the muffler you are ahead of the
>> game.  If it does leak don't bother trying to fix it, I did this and it
>> kept leaking.  Get one from catalina but you have to either send the
>> original back to them as they have several molds or have them send you
>> photos of the ones they have made over the years.
>> 
>> 
>> 
>>    On Friday, January 13, 2017 1:49 PM, Graeme Clark <cg at skyflyer.co.uk>
>> wrote:
>> 
>> 
>> 
>> 
>> 
>> Last summer, after motoring any length of time, we would get a diesel
>> fuel smell in the aft cabin and  - i noticed  also - more strongly under
>> the galley sink.
>> 
>> I know I don't have a fuel leak and I know that the exhaust system is good
>> as far as the muffler.
>> 
>> 
>> 
>> I therefore am assuming either a leak from the muffler or from the exhaust
>> hose itself, which is I think the original fit from 20 years ago and
>> therefor probably perished!
>> 
>> 
>> 
>> So I will be replacing the exhaust hose and have removed the muffler to
>> inspect at home. There is no immediate obvious sign of a leak but it isn't
>> under any pressure, of course. Any suggestions as how to best test it?
>> Even if it isn't leaking I thought I might take the opportunity whilst out
>> of the boat, to reinforce any weaker areas with glass mat and resin. But
>> what ARE the weaker areas? I know others here have had problems with these
>> mufflers on and off over the years.
>> 
>> 
>> 
>> Finally, there is what i assume to be a T-shaped drain tap on the side of
>> the muffler, but I was surprised to find it in the fully unscrewed position
>> (in other words fully counter clockwise). has it vibrated open, is that the
>> ‘leak' - or does this drain valve work in the reverse sense to ‘normal’?
>> 
>> 
>> 
>> Thanks in advance for any guidance
>> 
>> 
>> 
>> Graeme
>> 
>> #366, 1996, Oskar, Falmouth UK
>> 
>> 
>> 
>> ———————————————————
>> 
>> I work irregular hours and often write emails late in the evening and at
>> weekends; that doesn’t mean I expect you to do the same; reply when
>> convenient!
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