[C320-list] Dry aqua muffler

[Warren Updike]

I don't know the internal design. I presume it is a baffled box of some
sort. Others have removed it in order to fix a leak and returned it to
service. Some have returned it to Catalina who made a new one as they are
apparently custom made for the available space. As long as ours is working
it's not high enough on the project list to deal with. I've often thought if
I had to take it out, I'd replace it with a stock unit like the Vetus
Waterlock series. Check Vetus out on the web. Perhaps there is someone on
this list with a production muffler/waterlock?

Warren & Pattie Updike
1994 C320 #62 "Warr De Mar"


----Original Message-----
From: GREG SUTTON [mailto:sutt47 at msn.com] 
Sent: Wednesday, November 06, 2013 6:48 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Dry aqua muffler

Thanks Warren, I have tried all those fixes on my boat also with no success.

I was concerned that part of the muffler is plugged so it's not allowing a
free flow of water through out it.  I am hoping that someone would respond
with a cross section or a description of how the muffler works to add in the
problem's diagnosis.  If I make the effort to remove it, can I get it apart
or is it sealed?
Greg

> From: wupdike at hotmail.com
> To: C320-List at Catalina320.com
> Date: Wed, 6 Nov 2013 17:19:44 -0500
> Subject: Re: [C320-list] Dry aqua muffler
> 
> Greg, we also have a 1994, and experience the same condition.  I have 
> removed the petcock from the muffler and probed inside with a coat hanger:
> nothing. I have opened the petcock while the engine is running: still 
> no indication of expected water or pressure.  Last year, I replaced 
> the petcock. It is a standard automotive type. No change.  I am 
> stumped why this would be so. Perhaps someone else on the list knows.
> The only issue that concerns me is that if the engine is cranked 
> excessively, you are supposed to drain the muffler.  It seems this 
> can't be done on our boats. I am careful to not crank the engine too much.
> Warren & Pattie Updike
> 1994 C320 #62 "Warr De Mar"
> -----Original Message-----
> From: GREG SUTTON [mailto:sutt47 at msn.com]
> Sent: Tuesday, November 05, 2013 9:44 PM
> To: C320 Int. Association
> Subject: [C320-list] Dry aqua muffler
> 
> I have a 1994 C320 with the Perkins M30 engine.  It's my second year 
> with the boat and during the last two winterization I have opened the 
> aqua muffler drain however nothing has ever drained out.  Even during 
> operation there hasn't been any water coming from the drain even 
> though the engine runs at the proper temp and there is always a good 
> flow of water from the exhaust. Not being familiar with the muffler
system, is this typical?
> 
> Thanks
> Greg Sutton
> Liberty
> #128
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>