Catalina 310 overheating

[JimHartnett]

Fyi: had another overheat due to this repair.
The new hose I installed between the heat exchanger and the manifold was shorter and caused the heat exchanger to bump against the stairs/cover. Over time the hose came loose and fluid leaked out.
The temperature switch failed to trigger the alarm and I didn't notice till the anti freeze boiled off.
This was scary but the universal is tough and seems to have survivedm

 

[Alansails]

Sounds like you have dodged a few serious bullets, luckily. Jesse has made a list of Catalina 310 Maintaince list that is a great reminder and easy to follow-Luckily we sail in the sweetwater of the great lakes so our schedule is not like saltwater boats.

 

[SawyerCurt]

On my 1988 C34 (destroyed in Hurricane Sandy), the heat exchanger had one of the short pipes rubbing against the bracket for 20+ years and it wore a hole. During a particularly hard tack, the exchanger slid a fraction of an inch, exposing the hole and dumping all the antifreeze into the bilge. Overheating of the engine quickly followed. I too, had no audio indicators until the marine smoke detector I had installed just outside the engine compartment went off due to the heat. :-(