[C320-list] Exhaust elbow

[Bruce Heyman]

What am I missing?  Seems that a mixing elbow is nothing but a simple "Y"
designed to allow the raw cooling water to be mixed in with the exhaust.  On
my last boat, a Sabre, when the mixing elbow gave up we went to a local
metal fabricator where he made a new one for about 50 bucks.  That was about
10 years ago and as far as I know that part is still going.
Why can't we do that?
Bruce
Somerset 671 SoCal

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Jon Vez
Sent: Sunday, November 29, 2009 3:26 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Exhaust elbow

Thanks Allan--the aluminum is only on the custom jobs that Catalina
provides, which is one way to tell the difference...looks like I'll have to
stick with the custom route...

Regards

Jon

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Allan S. Field
Sent: Sunday, November 29, 2009 5:11 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Exhaust elbow

Jon - I had no aluminum foil around the stock elbow I got off the shelf. -
Allan

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Jon Vez
Sent: Sunday, November 29, 2009 9:15 AM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Exhaust elbow

Allan, I know I have the custom fabricated elbow, which is why I am curious
as to whether the stock off the shelf parts can replace--The biggest concern
with replacement is the angle which the elbow comes off the engine and the
ID of the hose. I believe the custom fabricated elbows, like the one I have
(there is a picture of mine on the 320 site) and the muffler inlet are not
standard on many vintage boats. This is why Catalina wants you to send the
old one to them. Pictures won't do it. The way you can tell if they were
*custom* fabricated is if it is a one piece stainless elbow with aluminum
foil insulation wrapped around it.

Regards,

Jon Vez
Solstice #582

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Allan S. Field
Sent: Sunday, November 29, 2009 9:02 AM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Exhaust elbow

Jon - I don't know that the exhaust parts on my boat (#808) were "custom
fabricated" although I very much doubt it.  They seemed to be stock as Bay
Shore had the replacements on the shelf.  I ordered them over the phone on
Friday and picked them up on Saturday (they left them in a box on their
front deck as they are closed on Saturday).  My sense is that one needs to
know the vintage of the motor before determining if the exhaust set-up was
custom fabricated from Catalina or is stock from Yanmar. - Allan

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Jon Vez
Sent: Sunday, November 29, 2009 8:46 AM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Exhaust elbow

Allan,

So you were able to replace the custom fabricated exhaust (single piece)
setup with these parts?

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Allan S. Field
Sent: Sunday, November 29, 2009 8:40 AM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Exhaust elbow

Bob - I was able to get an exact drop-in replacement from Bay Shore Marine
in Annapolis, MD, 410-263-8370, for hull #808 with the 3GM30F.  I ordered a
Mixing Elbow (124070-13520), Joint (104214-13580), Exhaust Elbow
(128370-13610), and Gasket (128370-13201) for a total cost of $355.44
including tax.  I picked the stuff up at the shop so there was no shipping.
I also replaced the exhaust hose (Bay Shore part #250-2044) for another
$32.70.  I can't remember if I sent them a picture of the old set-up first
but that sounds like something I would have done.

The exhaust hose is very difficult to work with.  To get it off the muffler,
I heated it with a hair dryer for perhaps 30-45 minutes before it finally
gave-up its hold.  I never did get the hose off the exhaust elbow side
despite trying for another hour.  That is the reason I wound up buying a new
hose.  When I put the new hose on, I applied dish soap around the inside of
the hose and that helped a lot.  

And like Jeff, I did this as preemptive.  What folks have not noted on the
list is that if one of those pin hole does start to leak, the leak will
throw out vast amounts of black soot that completely covers everything it
can reach and never will completely be removed.  This is the voice of
experience from my previous boat...  When my old boat leaked, it was all
soot that came out, no water.

Hope this helps!

Allan S. Field
Sea Shadow #808
Herrington Harbour South
Rosehaven, MD

----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Robert
Seastream
Sent: Saturday, November 28, 2009 10:10 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Exhaust elbow

Where to get these elbow replacements?  Are they still 'made to order'  
or has Catalina (or engine mfr) come to its' senses and established  
replacement parts by engine and year for that part?  I'm with Jeff on  
preemptive maintenance.  Our 2009 two week cruise around Maine waters  
had me replacing (underway) a hot water heater hose and (laying over  
in Portland) a macerator pump (thanks to a prior guest flushing a  
'handi-wipe'), along with two other freshwater supply (hose) system  
items that packed up.  We've got about 500 hours on our 2002 Yanmar  
3GM30F.

Bob Seastream
Intuition # 906


On Nov 28, 2009, at 6:13 PM, Jon Vez wrote:

> I agree with Jeff on this one! I plan on replacing my exhaust elbow  
> AND the
> muffler this winter as a precautionary exercise. I have about 600  
> hours on
> my '99 and I've checked my exhaust elbow and cleaned it up every other
> season--it's been fine, but like Jeff says, I'd rather do it now  
> than when
> I'm in the Gulf of Maine during my preciously short sailing season!
> Regards,
> Jon Vez
> Solstice #582
>
> -----Original Message-----
> Subject: Re: [C320-list] Exhaust elbow
>
> What I think people have experienced is pinholes that can be hard or
> impossible to detect until they really start leaking.
>
> Here's one scenario that isn't hard to imagine.   When it goes,  
> you'll be on
> your way to some destination or nice daysail somewhere.  Maybe its a  
> long
> trip you planned for a while.  It'll probably start to fill the  
> bilge and
> float the floorboards before you notice. You won't notice the bilge  
> pump
> because the engine will be running. You'll be alarmed thinking a  
> thru-hull
> is leaking or broke.   Etc....     Unnecessary stress in my opinion.
>
> In the end, you'd be happier to be able to replace questionable  
> parts on
> *your* schedule rather than on "the  emergency plan".  :)
>
> Boats aren't great platforms to try to squeeze every last drop of  
> life out
> of each part (in my opinion).   I love it when I get through an  
> entire 2
> week cruise and nothing breaks.
>
> I'd say replace it.  And just cross that part off your list of  
> concerns for
> many years.   I'll be doing that next year and our 2001 Yanmar has  
> less than
> 275 hours on it.
> -Jeff
>
> ------Original Message------
> From: Dave Anderer
> With the boat out of the water it is time to start the winter-list.   
> Only 4
> months to get it all done.
>
> When we bought the boat 4 years ago it had about 375 hours on the  
> Yanmar.
> The surveyor was quite concerned about the corrosion on the exhaust  
> elbow.
> He wouldn't commit as to how long it would last before total failure.
> Wouldn't even comment on if it would last the 6 hours to get the  
> boat back
> to our dock.  I bought some muffler repair tape and crossed my  
> fingers.  We
> made it, I pulled the elbow, and buffed the corrosion off in about 30
> seconds.  Just light surface corrosion.
>
> (This surveyor took the same approach on several other issues - they  
> sky was
> falling, but he wouldn't venture a guess as to when it would hit  
> us.  As
> I've pulled things apart I've concluded his concerns were pretty  
> much all
> unwarranted.  Waste of money.)
>
> I put the elbow back in.  We've now put another 440 hours on it - TT  
> is just
> over 800 hours.  I pulled the elbow today.  Same surface corrosion  
> (though a
> couple spots bother me).  No evident carbon restriction in the  
> manifold or
> the elbow.  We run consistently at 2800 RPM and have observed no  
> problems
> with the engine.
>
> Don't know if I'll bother replacing the elbow now or not.