[C320-list] Exhaust elbow

[David Marecek]

I have a 2004 Yanmar engine. The recommended replacement is 2 years for
replacement on the exhaust elbow.

I took the exhaust elbow off last year at 1400 hours due to an
overheating problem ( 20 minutes work) and cleaned it out, as it was
plugged , especially the vented loop fitting. 
 
Cleaning was running a dremmel tool with flex coupling and wire brush
through the elbow .  

However after cleaning, I had the Yanmar service rep check it and he
thought it was getting thin re metal on the elbow and should be
replaced. Since it is exhaust I coughed up the money as a safety
precaution.

You also need to examine any fittings or attachment points as these also
carbon up

It appears level of carbon is dependent on how you operate your diesel
and number of running hours.  If you baby it and keep low revs you will
have lots of carbon. If you operate at 90% power and occasionally 100%
power, less carbon build up

Dave Marecek
250 516 5117


-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Jeff Hare
Sent: Wednesday, August 19, 2009 3:42 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Exhaust elbow

Holly, 

That's probably sound advise.  The exhaust elbows do get restricted with
carbon and that can reduce engine power a lot.  

They also corrode and can start to leak at inopportune times and ruin a
trip.  

-jeff
------Original Message------
From: HOLLY DAVIS
Sender: c320-list-bounces at lists.catalina320.com
To: c320-list at catalina320.com
ReplyTo: C320-List at Catalina320.com
Subject: [C320-list] Exhaust elbow
Sent: Aug 19, 2009 6:28 PM


I recently had my mechanic replace my salt water pump and change the oil
and filters and just check the engine out.  He felt there was
"excessive" back pressure and thought I my exhaust elbow needed cleaning
or a I needed a new exhaust elbow.  Does this sound like the culprit and
how hard is it to clean out or replace.  I was thinking of trying to do
this myself, having way more time than $.  I have a 1995 320 with a with
a Westerbeke 30 engine. Any info will be appreciated.Holly"HONU"


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