[C38] heat exchanger

[Charles]

I have been out of town for the last week or so and am just catching up. 
As I understand Patrick's question, he is asking why black smoke might 
be coming from the engine compartment. I assume this means it is not 
coming from the exhaust, which I think means he is not seeing smoke 
coming from the heat exchanger system (unless the Vetus muffler has 
failed). Smoke coming from overheating bits of rubber caught in the heat 
exchanger would require some extremely high temperatures within the 
exchanger, which normally operates in the 200 degree range at its 
hottest. I would think rubber bits charring would require much hotter 
temperatures?

"Black smoke emanating from the engine compartment" could be from any 
number of things from mechanical to electrical to internal to the 
engine. I would first wonder what the smoke smelled like and then would 
proceed from there.

Charles Finn
Mighty Quinn #114
Great Lakes


Rich West wrote:
> Hi Patrick,
> I had a universal M35 in Legacy (before the Yanmar I now have) and it 
> had two bolt-on end caps on each end of the heat exchanger. It was 
> pretty simple to remove them and clean out the small tubes inside. 
> There were rubber gaskets between the body of the exchanger and the 
> end caps that looked like they were cut from an old intertube. I 
> cleaned my heat exchanger out a few times as there was a zinc 
> electrode in the heat exchanger that would disintegrate and clog the 
> small tubes with broken zinc chunks.
> I don't know if any of this applies to your engine.
>
> Rich, Legacy, #360, Los Angeles
>
> ------------------------------------------------------------------------
> *From:* listserve-bounces at catalina38.org 
> [mailto:listserve-bounces at catalina38.org] *On Behalf Of *Patrick Harpole
> *Sent:* Tuesday, February 24, 2009 6:14 PM
> *To:* 'Catalina 38 Listserve'
> *Subject:* [C38] heat exchanger
>
> *Skippers,*
>
> * I wrote and appreciate your answers/help about impellor breaking up 
> and engine over heating. Then there was the problem of the black smoke 
> emanating from the engine compartment. Someone mention it might me 
> rubber parts of the impellor getting into the heat exchanger? *
>
> *Does anyone know how to access/clean heat exchanger?*
>
> *Thanks,*
>
> *Patrick……aka “Blue Eyes” *
>
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