[C320-list] exhaust elbow question

[Rod Boer]

Bruce,

I had exactly the same problem.  I check my engines alignment every year but 
my cutlass bearing was worn in the vertical direction which indicated to me 
that the engine had too much vertical movement because of soft engine 
mounts.  I will also check into the firm ones.  Thanks.

Rod Boer
Odyssey, #688

----- Original Message ----- 
From: "Bruce Heyman" <BruceHeyman at cox.net>
To: "'C320-List'" <c320-list at catalina320.com>; "'Allan Field'" 
<Allan.Field at comcast.net>
Sent: Thursday, October 05, 2006 12:43 PM
Subject: Re: [C320-list] exhaust elbow question


> Rod,
> When working on hull 671 this summer in Florida I had to replace the 
> cutlass
> bearing.  It was not worn straight but at a diagonal.  This is usually and
> an indication of the engine being out of alignment.
>
> The yard foreman that I developed a healthy respect for said that it was a
> very common problem with Yanmars in Catalina's.  He says the problem is 
> that
> you can get the engine aligned statically (engine off) but when you get up
> to full speed the torque is enough to throw it out of alignment.  The root
> cause for this is the engine mounts are too soft.
>
> He said as a result of the problem Yanmar now makes two version of our
> mounts, soft and firm.  I haven't looked into it yet (it's on the list) 
> but
> I was going to replace with the firm ones.  6 years seems kind of quick 
> for
> a cutlass bearing to wear out.
>
> Bruce
> Somerset 671 SoCal
>
> -----Original Message-----
> From: c320-list-bounces at catalina320.com
> [mailto:c320-list-bounces at catalina320.com] On Behalf Of Rod Boer
> Sent: Wednesday, October 04, 2006 4:42 PM
> To: Allan Field; C320-List
> Subject: Re: [C320-list] exhaust elbow question
>
> Allan,
>
> I am also planning to replace the elbow this winter but I am also going to
> replace the motor mounts.
>
> Rod Boer
> Odyssey, #688
> ----- Original Message ----- 
> From: "Allan Field" <Allan.Field at comcast.net>
> To: "'C320-List'" <c320-list at catalina320.com>
> Sent: Wednesday, October 04, 2006 6:18 AM
> Subject: Re: [C320-list] exhaust elbow question
>
>
> Koen - There are 2 concerns with the exhaust elbow.  The first is that it
> clogs over time and will impact engine performance.  The second is that it
> eventually gets pinhole leaks.  Both happened on my previous boat.  Trust 
> me
> when I say that you don't even want to think about the mess you will have 
> if
> the elbow gets a pinhole leak.  The engine compartment fills with black 
> soot
> that never completely goes away no matter how much you clean, clean, 
> clean,
> and clean some more.
>
> I intend to replace my elbow prophylactically over the winter at about 500
> hours, change the hose to the aqua lift muffler, add a hump hose at the
> muffler, and pull the muffler, send it back to Catalina, and have a
> duplicate muffler made to sit on a shelf until when I need it.  Again, you
> don't even want to think about the mess if these parts fail.
>
> Allan S. Field
> Sea Shadow - #808
> Columbia, MD
>
> -----Original Message-----
> From: c320-list-bounces at catalina320.com
> [mailto:c320-list-bounces at catalina320.com] On Behalf Of Koen Bennebroek
> Sent: Tuesday, October 03, 2006 9:05 PM
> To: c320-list at catalina320.com
> Subject: [C320-list] exhaust elbow question
>
> I seem to remember someone mentioning that the exhaust elbows on C320's 
> get
> clogged and are recommended to be replaced every so often..
> My local mechanic, who will do the very first service on our boat soon (so
> we do not have experience either with him or with the engine
> service in general), recommends we order the elbow and gasket from Perkins
> (I believe tadiesel sells them?) in advance to save time.
>
> Is this a good suggestion? We have purchased the boat used 2 seasons ago, 
> so
> I have no idea what the history of this part is.
>
> Thanks for any suggestions,
>
> -Koen
>
>
>
>
>
>
>
>