[C38] Flying goose over heating follow up

[eyriepg at comcast.net]

We talked with a couple night before last that had sailed their Alajuela 33 from California to Mexico through the Canal to Texas and finally to Florida.  His diesel overheated and he tried many solutions.  He finally unsoldered an end cap and found that a baffle had been incorrectly welded inside the heat exchanger.  This prevented raw water from making a complete circuit in his heat exchanger.  The previous owner said that the engine had run hot since new.  Sometimes the problem is where you least expect it.

Phil Gay
C38 049 Que Linda
Everett, WA

-------------- Original message -------------- 
From: William Knowles <william_k_19810 at yahoo.com> 

> I would like to start out by saying thanks to all of 
> you for your responses to my first cry for help. I 
> wanted to follow up let everyone know what we found. 
> 1. The raw water intake was OK a little silt but 
> nothing that would restrict water flow. There where 
> only one clamp per side that has been corrected. 
> 2. Raw water pump OK. May be new not sure. 
> 3. Thermostat OK cap OK fluid Good and correct level. 
> 4. Hot water tank hose may have had small blockage by 
> passed for test will clean when complete but might 
> have to replace anyway small fresh water leak. 
> 5. Heat exchanger opened and pretty clean ran wire 
> through all tubes to clean. 
> 6. Removed mixing elbow to inspect very clean, not 
> loading engine. 
> With all things checked and tried the engine is still 
> overheating at dock. This seems to be a common problem 
> not only with 38's but the Tartan sight had comments 
> also. I think my next step will be to replace the 2" 
> heat exchanger with a 3" model and route the ware 
> heater Through the thermostat by-pass. If that still 
> doesn't work I will do the pump (larger capacity) I 
> also found on one site that parts can be purchased 
> from a kubota tractor dealers just don't say "marine". 
> I would like your thoughts on this plan. As an aside 
> I did some of the work and the marina did some. 
> I would also like to get together with the other 
> owners on the bay. Is there an all Catalina rendezvous 
> this year? Any ideas. 
> 
> Thanks Bill Knowles "Flying Goose" 324 
> 
> 
> 
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