[C320-list] exhaust blockage

[Denny Browne]

Same problem with hull 935 last week. Not sure what part of the $2200 bill was contributed by that, bu the elbow was completely clogged up. 

Denny Browne
310.408.9591

Sent from iPhone, sorry for typos, grammar, etc...

> On Nov 20, 2015, at 12:32 PM, Steve Turbis <sturbis at gmail.com> wrote:
> 
> Thanks I plan to give it a try. By the way did you use stainless steel
> elbows?
> 
>> On Fri, Nov 20, 2015 at 12:26 PM, Jeff Hare <Catalina at thehares.com> wrote:
>> 
>> It's really an easy job.
>> 
>> You'll need the exhaust elbow, the threaded stainless coupler and the "L"
>> shaped exhaust port casting that mounts to the back of the engine.  I got
>> those three parts from the local Yanmar dealer and they were under $500.
>> The other part you'll need is a short length of exhaust hose.  The
>> corrugated/flexible exhaust hose is really easy to work with and won't put
>> nearly as much stress on the muffler.  Don't reuse the one you have, new
>> hose makes the job easy.
>> 
>> - Remove the exhaust cooling line (raw water) that feeds in near the top
>> of elbow.
>> - Remove the hose clamps from the Exhaust hose that enters the muffler.
>> - Unbolt the 4 bolts on the cast exhaust assembly from the back of the
>> engine block.
>> - If the assembly will twist and come off the muffler, great.  If not,
>> slice the exhaust hose with a utility knife and peel the hose off the
>> muffler fitting carefully.  Take this hose with you when getting a
>> replacement.
>> - Remove the exhaust hose from the elbow assembly, but don't separate or
>> try to reuse any parts of the exhaust elbow.  It's more useful to keep it
>> just like it is so that you can assemble the new one and match the same
>> angles.  Then the new assembly will just drop in place.
>> - You will probably need to remove/reuse the little bronze(?) fitting from
>> the old assembly that the raw water cooling line plugs into.  My new one
>> didn't have this.
>> - I used pipe sealant compound when assembling the new exhaust elbow, but
>> a half dozen wraps of PTFE/Teflon tape would work also.  A vice helps hold
>> parts when assembling the new unit.
>> 
>> I think I had the whole thing put back in the boat really quickly once I
>> got the parts.  It's not difficult at all.
>> 
>> Finally, use a sharpie and write the year on all the parts you changed, so
>> that the next owner of the boat will know how old they are.  :)
>> 
>> -Jeff Hare
>> #809
>> Woodbine II
>> Newburyport, MA
>> 
>> 
>> -----Original Message-----
>> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On
>> Behalf Of Steve Turbis
>> Sent: Friday, November 20, 2015 1:31 PM
>> To: C320-List at catalina320.com
>> Subject: [C320-list] exhaust blockage
>> 
>> Has anyone had this problem. I can't get my Yanmar diesel over 1700 RPMs
>> and my mechanic says I have to replace the elbow and manifold because
>> typically this engine builds up soot in this area and the motor can't
>> function properly because exhaust keeps backing into the motor. Any ideas
>> if this is true? He wants to charge about $1000 to repair it.
>> 
>> Steve
>> "AT LAST"
>> Dana Point Ca
>> 
>>