[C320-list] Aqua lift mufffer
John Frost
john at frostnet.net
Fri Sep 25 15:08:53 PDT 2015
This is worth a bunch Danny. Thanks for taking the time to document for us.
Does anyone know if the mixing elbow lasts longer in fresh water?
+
Happy Sailing! /||\
John / || \
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/ || Hull 1118 \
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/ Catalina || \
/ C320MKII || \
/ 2007 || \
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\ Lake Guntersville, AL l_
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-----Original Message-----
From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of danny jensen
Sent: Friday, September 25, 2015 1:39 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Aqua lift mufffer
The details of my Mixing Elbow exhaust, muffler replacement project can now be found using these links. I have forwarded pictures to Chris as requested. The links below are pdf downloads with pictures.
http://mammothcondos.com/C-320-mixing-elbow-replacement
and
http://www.catalina320.com/mediagallery/download.php?mid=20150926070241130
On Wed, Aug 12, 2015 at 6:45 AM, danny jensen <danny at jensenshouse.com>
wrote:
> I have commented on this subject before so I hope you all don't mind
> my re-post on this subject. My impression is that mufflers need to be
> replaced proactively every 10 years along with mixing elbows. This is
> cheap insurance because you will float your floorboards and get soot
> inside your boat. It is ugly. Just pay the $375 for a new muffler and
> save yourself the aggravation.
>
> Here are the details of my mixing elbow / aqua lift muffler
> replacement project.
>
> I have about 500 hours on a 2004 C320 with a Yanmar 3GM30F-YEU. The
> mechanic recommended I change the mixing elbow in the next 12 months.
> The U Mixing Elbow inside was corroded at the point where the raw cool
> raw water mixes with exhaust. The riser appeared to be in good shape
> but the two parts looked to be bonded together and my mechanic told me
> to replace the entire assembly Elbow, riser and join. I read several
> owners accounts of failed mixing elbows and mufflers / muffler
> repairs. The lead time to get a muffler from Catalina was estimated to
> be 2 months. The general consensus was to replace the muffler after
> about 10 years. Mufflers seem to fail mostly near the screw holes in
> the corners. Some owners think this is due to vibration from the
> engine exhaust hose. I used Jeff Hares rule and decided to replace the
> muffler on my schedule instead of the boats schedule especially
> because of the 2 month lead time for the muffler. The cost of the muffler from Catalina was $374.
>
> I contacted Ken Roy at Catalina and gave him my hull number and some
> pictures and dimensions of my existing muffler (it is for sale now).
> Ken asked for some more dimensions. Ken sent me back a picture of the
> muffler he proposed to make for me and requested payment. It took
> about 2 months total to get the muffler.
> I ordered the gasket, mixing elbow, SS joint and riser exhaust from
> Bayshore Marine(see below). Next, I considered the muffler vibration issue.
> Some owners felt that a hump hose would isolate the vibration from the
> engine to the muffler. The existing wet exhaust hose connecting
> mixing elbow to muffler input was a 22 inch 2 in. id. I decided
> replace with 2 hose segments of more flexible trident corrugated
> exhaust hose joined together with an exhaust hump hose I purchased from Catalina Direct.
>
> Here are the details. The procedure took about 3.5 hours including
> driving home once.
>
> 1. I turned off the raw water thru hull, disconnected the 3/8 hose
> connection at the elbow, the 4 riser exhaust bolts came off with no
> problem. Then I disconnected the elbow from the 2 in. exhaust hose. I
> used a radiator hose pick to remove the hoses. They came right off
> with no problem. Don’t sweat removing the hoses.
>
> 2. I took the old elbow assembly home where I used it for reference
> to create the new assembly using a vise. I don’t believe you can
> create the new assembly without the help of a vise and 2 large
> adjustable 15 in wrenches. Don’t try to make the new assembly on your
> boat! You will need to twist the 3/8 in input 180 degrees then you
> will need to create the exact same angle as the old elbow by threading
> the joint into the elbow and exhaust riser. I used high temperature
> anti seize on the joint threads before assembly.
>
> 3. I used a gasket scraper to easily remove the old gasket. Then I
> applied some high temp gasket seating material to both sides of the
> new gasket and bolted the elbow assembly to the motor.
>
> 4. I removed the 4 stainless screws securing the muffler to the
> boat and I removed the output exhaust hose from the old muffler using
> the radiator hose pick. The hoses come off the muffler without any problem.
> The muffler comes out of the boat without any problem.
>
> 5. I put the new muffler in place and connected the output exhaust
> hose without any issues. I found the screw holes on the new muffler
> did not match the screw holes on the muffler. I could get the 2 screw
> holes forward to line up but then the aft screw holes with not align
> with the existing holes. Access to the forward inboard screw is
> somewhat limited so you will want to match the forward inboard screw
> with the existing hole then use a drill motor to self tap new holes
> with the muffler in place. The existing self tapping screws were in
> good shape and I did not need to drill pilot holes, I just drove the
> screws into the glass with the muffler in place after I screwed down
> the forward screws. Apply a good amount of silicon grease to the muffler drain.
>
> 6. I used a sawzall to cut an 8 in and 13 in segment of corrugated
> exhaust hose then I joined them with a hump hose using double hose
> clamps on each side of the hump hose. Then I connected the hose to the
> mixing elbow and the input side of the muffler.
>
> 7. I turned on the thru hull and ran the engine. White fiberglass
> chips from the new muffler were spitting out the exhaust for a while.
> No leaks. The hump hose appeared to do the job limiting vibration. I
> left the rear engine cover off and took the boat out in open water and
> ran the motor up 3000 RPM. I went below and to my surprise I saw smoke
> coming from the exhaust riser side of the stainless steel joint nut!
> No water. It appeared that the joint was oozing and burning
> anti-seize. After about 10 minutes this smoking stopped. I’m
> assuming this is normal but it spooked me. I’m going to put a co2
> monitor in the aft cabin to make sure I don’t have gas leaks.
>
> Parts:
> bayshore marine:
> 128370-13201 gasket $4.92
> 124070-13520 U mixing elbow $169.33
> 128370-13610 riser exhaust $130.39
> 104214-13580 joint $28.79
> Note:
> 27233-250000 plug comes with 124070-13610
> 124070-13300 elbow 3/8 comes with 124070-13610
>
> Parts from Catalina Yachts (K... at catalinayachts.com)
> 1 Muffler $374 plus Shipping
>
> Parts from Catalina direct:
> High Temp Anti-Seize Compound (#Z2858): 1 Item Total: $15.95 Exhaust
> Hump Hose 1-5/8"I.D X 6" (#Z2152): 1 Item Total: $31.49
>
> Tools Harbor Freight
> 8" Radiator Hose Pick $3.99
> Carbon/Gasket Scraper $2.99
> High Temp Gasket seating compound
>
> MMI Marine
> TRI252-2004
> TRIDENT CORRUGATED FLEX SAE J2006 MARINE WET EXHAUST HOSE (HARD WALL
> WITH
> WIRE) - 2 Feet $15.00
> BUA70HSS36C
> BUCK HOSE CLAMPS S/S FROM 1 13/16" TO 2 3/4" 4 $8.00
>
> Danny Jensen
> A BOA VIDA
> Hull 972
>
>
>
> On Tue, Aug 11, 2015 at 6:33 PM, Jeff Hare <Catalina at thehares.com> wrote:
>
>> Greg,
>>
>> Catalina Yachts builds the boats of course, but Catalina Direct is
>> an independent company that specializes in sourcing parts for Catalina boats.
>> They are not affiliated with each other. Ultimately, CD gets some
>> parts from Catalina (like the mufflers, rudders, and other parts
>> Catalina
>> manufactures) and the rest they order from the third party vendors
>> that make or distribute them and act as a middleman.
>>
>> -Jeff
>>
>> -----Original Message-----
>> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On
>> Behalf Of Greg Flanagan
>> Sent: Tuesday, August 11, 2015 7:52 PM
>> To: C320-List at Catalina320.com
>> Subject: Re: [C320-list] Aqua lift mufffer
>>
>> Thanks for all the helpful responses. One question Lora mentions
>> Catalina Yachts and Larry mentions Catalina Direct (CD). Are these
>> not different entities?
>>
>>
>> Greg
>> Hoop Dancer #1076
>> Sidney, BC
>>
>> > On Aug 9, 2015, at 10:10 AM, pat reynolds <lorasalum at yahoo.com> wrote:
>> >
>> > I would echo Larry. I am on my third muffler in 20 seasons. The
>> > original lasted about 13 years. I made the mistake of sending a
>> > photo for the second one and got the wrong one but made it fit for
>> > a couple years. when it started leaking we tries several times and
>> > ways to fix it but with little success. The best way to order is
>> > to contact the Catalina Yachts parts department by phone or email.
>> > They have photos of all of the models of muffler they produced or
>> > if not that, then by all means send them the original as they have
>> > had several different configurations
>> >
>> >
>> >
>> > On Friday, August 7, 2015 6:37 PM, Larry Frank <
>> WindSwept at stx.rr.com> wrote:
>> >
>> >
>> > Greg,
>> >
>> > Having an ³experienced² 320 I can tell you I could be considered an
>> > expert on this, as much as anyone can be an expert on a boat issue.
>> > I bet I have had 3 or 4 new mufflers plus have tried to fix them
>> > too. I have had all the leaks, flange, screw holes and inlet tube.
>> > I am so lucky I need to buy more lottery tickets! CD supplied the
>> > last
>> replacement I purchased.
>> > They insisted I send them the failed muffler because there are many
>> > the Catalina has used through the years. They wanted to make sure
>> > it would fit. That is the good news. They told me it could take
>> > up to
>> > 12 weeks to get the replacement and they were correct. Luckily I
>> > had a spare that only leaked a little bit and could use that while
>> > I waited. The problem seems to be with Catalina and not CD so I
>> > don¹t think it would help to be demanding of them.
>> >
>> > If it is a screw hole leak it is worth a try to fix it. I did and
>> > was not successful, but you might have better luck.
>> >
>> > Larry
>> > WindSwept
>> > Catalina 320 #246
>> >
>> >> On 8/7/15, 10:37 AM, "Greg Flanagan" <greg.flanagan at shaw.ca> wrote:
>> >>
>> >> My muffler is leaking at the base when the engine is running (not
>> >> a great amount). The engine is a Yanmar 3YM30.
>> >> Has anyone experience in fixing this? Should it just be replaced?
>> >> Who supplies one?
>> >> Catalina Direct does not seem to have the right model for this
>> >> engine configuration.
>> >>
>> >> Thanks,
>> >>
>> >> Greg
>> >> Hoop Dancer # 1086
>> >> Sidney, BC
>> >
>> >
>> >
>> >
>>
>>
>
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