[C320-list] Coolant mixing with raw water

[Marianne and Kevin Waterbury]

Thank you again for all the good advice and ideas everyone has been sending, what a great group. With the absence of coolant in the blige I’m leaning toward and hoping my problem is with the tank. I had the heat exchanger tested at a radiator shop and it was found to be tight with no leaks. On Thursday evenings I race with a group on L.I. Sound, and I brought my problem up with several folks that know a lot more about motors than I do. A few seemed to think it could be a gasket inside the motor, over the weekend we are going to take off the coolant tank and start looking at and testing the system. I’ll inform the group our results.
Thanks
Kevin Waterbury
Harvest Moon hull #111

> On Jun 27, 2019, at 6:21 PM, Troy Dunn <troutwarrior at gmail.com> wrote:
> 
> My vote is for small leaks inside the heat exchanger.   The combination of
> high pressure on the freshwater side and the Venturi effect on the raw
> water side is likely to drain your coolant very rapidly, and at an
> accelerating pace as you lose more coolant and the fresh water side starts
> to get super heated.
> 
> I wonder if you might need to do a couple of flushes of the block once you
> figure this out in case any raw water...hopefully not saltwater...got into
> the block as the engine cooled back down...that could be pretty bad.
> 
> Troy Dunn
> Hull #514