[C320-list] muffler box

[sailorlew at aol.com]

I lurk on several Catalina lists & have seen that the 320 has many more muffler failures than any other size boat, & maybe even all the sizes added together. 
Lew

 

 

 

-----Original Message-----
From: Larry Frank <WindSwept at stx.rr.com>
To: C320-List <C320-List at Catalina320.com>
Sent: Tue, Oct 14, 2014 8:34 am
Subject: Re: [C320-list] muffler box


I have had failures at the holes, bottom seam and had the inlet pipe
crack.  Failure at the holes may have been self induced as I drilled out
the holes to a larger diameter to accommodate larger screws because the
screw holes in the liner below the muffler had become stripped.  When I
installed the new muffler a month ago I glassed in these holes in the
liner and redrilled them to the proper size.

The hump hose is a great idea because it will put less stress on both the
inlet pipe and the mounting hose not to mention the installer!  I didn¹t
have one when I put the muffler back in but plan on ordering one for
future use in the event I ever remove the muffler or hose again.

When I ordered the latest muffler from Catalina direct Kent told me that
these mufflers had to be ground down a little at the bottom flange joint
on some boats to make them fit which will reduce the strength of that
joint.  He worked with me closely to make sure the new muffler had a
minimal amount of grinding.  He also told me that the Florida plant uses
better materials then were used at the now closed California plant. We
will see but all of my failures were from the California plant.

Larry
WindSwept 
C320 #246

On 10/13/14, 8:14 AM, "millers1 at aol.com" <millers1 at aol.com> wrote:

>
>There has been a fair bit of discussion on this problem in the past.  It
>would be 
>interesting to know if Catalina has modified the design to make the
>muffler "Safer."
>The two weak points I have noted are the hold down holes drilled too
>close to the 
>water box and the box to bottom flange is a marginal glass effort.
>Even on a new replacement I would inspect these areas closely and run a
>low pressure test of the
>assembly with soap water on the seams.
>My installed muffler failed at both locations...... so I added mat and
>re-glassed the seams and glassed the hold down holes closed.
>I installed an external clamp on the flanges to secure the muffler in
>place and added a hump hose
>to reduce engine vibration.    So far it has worked for the two seasons
>the fix has been used.
>Art  #680
>
> 
> 
>-----Original Message-----
>From: Larry Frank <WindSwept at stx.rr.com>
>To: C320-List <C320-List at Catalina320.com>
>Sent: Mon, Oct 13, 2014 8:48 am
>Subject: Re: [C320-list] muffler box
>
>
>Lou,
>
>This is a common problem on the 320.  Depending on how bad the separation
>is you may be able to have it fixed however if it was so bad that all of
>the water and then diesel exhaust were leaking I suspect this route will
>not be too successful.  You can order a replacement from Catalina Direct.
>It is a good thing that you are putting your 320 away for the winter
>because these mufflers are made to order and delivery time can be quite
>long.  
>
>I have had my 320 for almost 20 years now and have had 2 or 3 muffler
>failures during that period requiring replacement.  I use my engine
>frequently and have over 2,000 hours on it which may explain why I have
>had more issues than your average 320 owner might report.
>
>Larry
>WindSwept
>C320 #246
>
>On 10/12/14, 3:59 PM, "Colleen Reszoly" <colloua5 at aol.com> wrote:
>
>>
>>Hi all
>>Was winterizing boat and had an issue with the muffler box it seperated
>>from the base and deisel smoke filled the aft cabin till motor shut off.
>>Anyone have any suggestions as to what happened and how to fix it.
>>
>>Lou R 427
>>
>>
>>
>>On Oct 
>>10, 2014, at 6:31 AM, "Jon Vez" <jonvez at comcast.net> wrote:
>>
>>> You do need to add *Distilled* water to a 50/50 mix. The mix is
>>>important to
>>> obtain proper operating temperature of the engine. Freezing point will
>>>not
>>> be an issue at this mix.
>>> Since you have gone through the trouble of flushing, there are ELC out
>>>there
>>> that may be a better choice. Yanmar's current recommendations are
>>>Dexcool,
>>> Havoline ELC and Texaco ELC, however the Rotella ELC is also
>>>recommended and
>>> used by many Yanmar shops (easy to find and cheap). Not sure if Dexcool
>>>has
>>> solved earlier issues, but if you google, you will find that it came to
>>>be
>>> known as 'Death Cool'......
>>> 
>>> -----Original Message-----
>>> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On
>>>Behalf
>>> Of tharrison at innovations-plus.com
>>> Sent: Thursday, October 09, 2014 6:17 PM
>>> To: C320-List at Catalina320.com
>>> Subject: Re: [C320-list] Engine anti-freeze
>>> 
>>> Just changed out the green antifreeze . Just added a flush and will
>>>drain
>>> that out tomorrow.  Then ready to put in dexcool long life (GM
>>>Dealers). 
>>> 
>>> I did not purchase the 50/50 mix. Do you have to add water to the
>>>Dexcool ?
>>> If so why?  Water freezes up here.
>>> 
>>> Ted hull 424 
>>> 
>>> Sent from my iPhone
>>> 
>>>> On Oct 6, 2014, at 12:36 PM, John Meyers <jcmeyers7 at gmail.com> wrote:
>>>> 
>>>> Good article on changing fluid.
>>>> 
>>>> Here is a hint on blowing on the heater hose to push out more fluid.
>>>>Put
>>>> a clean plastic sandwich bag over the end of the hose and poke a hole
>>>> in the plastic where the opening of the hose is. This way you don't
>>>> need to clean the hose. I don't like the taste of rubber.
>>>> 
>>>> John Meyers
>>>> #406 Wind Chime
>>>> Muskegon MI
>>>> 
>>>>> On Mon, Oct 6, 2014 at 12:10 PM, Jeff Hare <Catalina at thehares.com>
>>>>>wrote:
>>>>> 
>>>>> Hi Ted,
>>>>> 
>>>>> Karl wrote up a decent article for our website on doing this.
>>>>> http://www.catalina320.com/article.php?story=20060212151611361
>>>>> 
>>>>> -Jeff Hare
>>>>> #809
>>>>> -----Original Message-----
>>>>> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On
>>>>> Behalf Of tharrison at innovations-plus.com
>>>>> Sent: Monday, October 6, 2014 12:01 PM
>>>>> To: C320-List at Catalina320.com
>>>>> Subject: [C320-list] Engine anti-freeze
>>>>> 
>>>>> How do you drain the engine antifreeze on a Yanmar 30F? How much is
>>>>> drained?
>>>>> 
>>>>> 
>>>>> Ted hull 424 1997
>>>>> 
>>>>> Sent from my iPhone
>>> 
>
>
>
> 
>