[C38] heat exchanger

[Joseph Launie]

Rich,
    I think the Universal is a marine version of the Kabota tractor 
engine which is in use all around the world. I have heard that for that 
reason, parts are available everywhere. I appreciate the answer. Cooling 
problems can be tricky. When I took delivery of my new Catalina 30 years 
ago, it had an overheating problem immediately. The Catalina factory 
people and Universal rep spent hours looking at it. After a memorable 
screaming match in my  main salon   ( Catalina v Universal), they came 
up with a workaround which  increased the water flow somehow inside the 
engine which worked. I kept asking them to haul the boat to check the 
intake but they refused. When I hauled to paint the bottom later, I 
found the intake was half filled with caulking compound from the initial 
installation. Do not forget to check for this. Joe

Rich West wrote:
> Hi Joe,
>  
> The M35 Universal I had was a great engine but we were at about 4000 
> hours.  Even at that, there was nothing really wrong with the engine, 
> but we cruise and we just thought that the time was coming when we'd 
> be off someplace remote and in need of a rebuild.
>  
> Truthfully, I've had almost as many problems with the new Yanmar in a 
> few years as I'd had in all the time we had the old Universal - I 
> think they're tied at about 1-1.  On the universal, I used to have 
> overheating problems when I got into warm water.  We never did totally 
> solve that except to back down on the RPM when the batteries needed a 
> lot of charging as the load of the high-output alternator along with 
> full cruising speed and warm water would always cause overheating.  On 
> the Yanmar, I've had a clogged water inlet on the exhaust riser.  It 
> turns out that I'm not using the engine enough, water is sitting in 
> the riser and rusting and the rust is clogging the inlet.  I replaced 
> the riser.  It seems like it might be an every two year thing. 
>  
> There's a long-winded answer to a simple question.
>  
> Rich, Legacy, #360, Los Angeles
>  
>
> ------------------------------------------------------------------------
> *From:* listserve-bounces at catalina38.org 
> [mailto:listserve-bounces at catalina38.org] *On Behalf Of *Joseph Launie
> *Sent:* Tuesday, February 24, 2009 10:02 PM
> *To:* Catalina 38 Listserve
> *Subject:* Re: [C38] heat exchanger
>
> Ric,
>     I have I 4 cylinder universal that may be the M-35. It has given 
> me good service altho with a racing boat I only have 825 hours on it. 
> Why did you get rid of it? Joe Launie, Macavity
>
> Rich West wrote:
>> <!--[if mso 9]--> <!--[endif]-->
>> 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"  *
>>
>> Checked by AVG - www.avg.com
>> Version: 8.0.237 / Virus Database: 270.11.3/1969 - Release Date: 
>> 02/24/09 06:43:00
>>
>> ------------------------------------------------------------------------
>>
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>>   
>
> Checked by AVG - www.avg.com
> Version: 8.0.237 / Virus Database: 270.11.3/1969 - Release Date: 
> 02/24/09 06:43:00
>
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>
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