Mine looks like Yves's new one. I guess I will not worry about it for now
since it sounds from what Rick said, it seems like there don’t have the same
tendency for problems as the Yanmar. Thanks- Dave
On Nov 15, 2014, at 8:06 PM, Yves Gagnon via CnC-List
wrote:
> Here are pictures of my m4-30 mixing Elbow I replaced two years ago :
> https://www.icloud.com/photostream/#A6JtdOXmz3EBk
>
> Yves Gagnon
> Foxy, c&c 33-1 76
> Envoyé de mon iPhone 4
>
> Le 2014-11-15 à 18:27, Neil Gallagher via CnC-List a
> écrit :
>
>> Dave,
>>
>> I put a Universal M30-B in my club launch two years ago, and it had a mixing
>> "elbow" supplied loose, I had to add a 2" long pipe between the manifold and
>> the elbow. If you go to page 13 of the manual in the link below, you'll see
>> it. Not sure if the M4-30 has the same, as the manual on the westerbeke
>> site for that engine doesn't show one, but the engine I took out of our
>> launch was a 1990's vintage Universal and it had the same thing.
>>
>> Neil Gallagher
>> Weatherly, 35-1
>> Glen Cove, NY
>>
>> http://www.westerbeke.com/OnlineManuals/201009_m3_20b_parts.pdf
>>
>>
>> On 11/15/2014 12:49 PM, Joe Della Barba via CnC-List wrote:
>>> Unless your boat has a dry exhaust – not likely – you have a way to mix
>>> exhaust and water somewhere. At least back in the Atomic 4 days Universal
>>> did not make mixing elbows, so the installer was left to buy or fabricate
>>> one. Mine is made of black iron pipe from Home Depot and I try and remember
>>> to replace it every 5 years or so. Follow the coolant hoses and you will
>>> find one going into the exhaust somehow. Whatever that hose connects to is
>>> the mixing device. Having a diesel you will not have a jacketed exhaust
>>> like some 1960s era C&Cs did. Those only work on gasoline engines because
>>> diesel exhaust corrodes through the copper pipe those were made of.
>>>
>>> Joe Della Barba
>>> j...@dellabarba.com
>>> COQUINA C&C 35 MK I
>>> From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of David
>>> Knecht via CnC-List
>>> Sent: Saturday, November 15, 2014 9:27 AM
>>> To: Robert Abbott; CnC CnC discussion list
>>> Subject: Re: Stus-List Exhaust mixing elbow
>>>
>>> This discussion made me think about the situation on my boat with a
>>> Universal M4-30. I looked at the engine diagram and parts list online and
>>> found no mention of a mixing elbow. Is this a Yanmar specific issue? If
>>> so, how does the Universal handle exhaust? Dave
>>>
>>> On Nov 15, 2014, at 9:11 AM, Robert Abbott via CnC-List
>>> wrote:
>>>
>>>
>>> On 2014/11/13 8:23 AM, John and Maryann Read via CnC-List wrote:
>>>
>>> John
>>>
>>> Your mixing elbow is original ie 32 years old..I am assuming it has
>>> spent its life in a 'salt water environment'. If so, there has to be some
>>> corrosion taking place on the inside.
>>>
>>> A mixing elbow is not an expensive item and if you have taken yours off and
>>> put it back on, then do yourself a favor and replace it before it fails at
>>> the most inopportune time.
>>>
>>> In 2012, a fellow club member with a 1984 C&C 32 had his mixing elbow
>>> 'split' at the top of elbow spewing salt water and gases into his engine
>>> compartment while motoring up the coast. He made it back to the club O.K.
>>> but he then lost several weeks in the sailing season getting someone to
>>> replace it for him.
>>>
>>> I took his old mixing elbow and cut it open to examine it..while the
>>> outside wall looked fine, the inside was in pretty rough shape. And the
>>> problem wasn't carbon buildup but salt water corrosion. The following
>>> season, I replaced mine..I deem it preventable maintenance and what
>>> will eventually fail.
>>>
>>> Rob Abbott
>>> AZURA
>>> C&C 32 - 84
>>> Halifax, N.S.
>>>
>>>
>>>
>>>
>>>
>>> Our 34 has the original Yanmar 3GM which is working like a charm. How does
>>> one tell if the mixing elbow is due for replacement??. Ours still has the
>>> original mixing elbow which we removed and inspected about 12 years ago. It
>>> was fine. Lots of water comes out the exhaust and engine performance is
>>> fine. Engine is used mostly for motoring in and out of the mooring field
>>> with periodic runs of an hour or so to get to the starting line. I was
>>> thinking of removing the hose and use a mirror and spot light to look
>>> inside??
>>>
>>>
>>> John and Maryann
>>> Legacy III
>>> 1982 C&C 34
>>> Noank, CT
>>>
>>>
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