[C320-list] Another Perkins M30 Overheating Help Thread

[Paul Hetherington]

Will try that.  Thanks.
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Paul Hetherington
1994 C320 #155 Seasun

On Tue, May 30, 2023 at 5:41 AM Dave Hupe via C320-list <
c320-list at lists.catalina320.com> wrote:

> The suggestion to see if your hot water heater does heat up just by engine
> operation definitely is a good indirect test.
>
> The internal engine coolant system is not a high pressure one (I believe 7
> psi). So, I would make sure your coolant overflow tank is full to the low
> mark before starting the engine and also make sure your coolant is full in
> the heat exchanger tank (fill to just below the "radiator" cap neck to make
> sure the exchanger tube is submerged in coolant). I would then leave the
> cap loose and run the engine. Once the engine heats up, you can carefully
> remove the cap and actually see coolant flow to confirm you have coolant
> circulating.
> Dave Hupe
> 1994 C320 #32
>
> Sent from Yahoo Mail on Androi
>
>   On Mon, May 29, 2023 at 10:28 PM, Paul Hetherington via C320-list<
> c320-list at lists.catalina320.com> wrote:   Some good thoughts here. Thanks
> to all.  Will be trying a few things.
>
> One thing that has come up, how would we best confirm the non-raw (so
> fresh) water pump is working well?  There is no impeller that I know of, so
> not entirely sure how the water is 'pushed' around the circuit. It would
> stand to reason that if this water isn't moving well then the cooling
> transfer won't be efficient and the temp would rise.  I'm just not sure how
> to best test this.
>
> Cheers.
>
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> Paul Hetherington
> Hull 155, 1994 Seasun.
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