[Healeys] Head Gasket

[Michael Salter]

Oh no ... not engine oil again ...🤪

On Thu., Feb. 24, 2022, 12:35 p.m. warthodson--- via Healeys, <
healeys at autox.team.net> wrote:

> Bob,
> If Dynolite does not work, I would try 20W50 motor oil. I have read that
> it is an excellent heat transfer agent & should also be good for the water
> pump bearings. Also, any leaks in the head gasket might go undetected!
> Your welcome,
> Gary Hodson
>
> -----Original Message-----
> From: Bob Spidell <bspidell at comcast.net>
> To: healeys at autox.team.net
> Sent: Thu, Feb 24, 2022 10:44 am
> Subject: Re: [Healeys] Head Gasket
>
> Which, of course, is the theory of the various 'water wetter' products. I
> tried (the original, I think) Water Wetter from Redline and didn't notice a
> significant reduction in coolant temp; but, I've got a bottle of the
> Dynolite version on the shelf I'll throw in the next time I change out
> coolant. As they say: "Hope springs eternal."
>
>
> On 2/24/2022 8:30 AM, Michael Salter wrote:
>
> Interesting article Bob but IMHO their statement:
> "Pressure in a cooling system is vital for keeping water in contact with the
> metal surfaces of the cylinder heads and block."
> is something of an over simplification.
> The reality is that any "boiling " of the coolant produces a "bubble" of
> gaseous coolant, there is no air, as such, involved.
> Their statement :
> "Pressure keeps the air compressed and maintains the water-to-metal
> contact. "
> suggests that the cooling system contains air; it shouldn't contain any
> air, other perhaps the very small quantity disolved in the coolant.
> Pressurizing the cooling system raises the boiling point. Raising the
> boiling point means that the temperature of the engine surfaces where
> gaseous coolant will be generated will also  need to be higher for boiling
> to occur.
> As the rate of heat radiation from the cooling surfaces is proportional to
> the 4th power of the absolute temperature there is also a considerable
> increase in the amount of energy that can be dissipated by the radiator.
> These things together make pressuring the cooling system even to only 7
> p.s.i. very advantageous.
> As I mentioned earlier the problem with the 100 insofar as cooling system
> pressure is concerned is the carbon seal in the water pump and perhaps the
> design of the radiator tanks.
>
> M
>
>
>
>
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