[DeTomaso] Subject: LAYDOWN OR STRAIGHT UP RADIATOR

[Kirby Schrader]

Ahhhh.... You have just become an advocate of the remote thermostat gang without even knowing it!
:-)


On Mar 26, 2012, at 5:59 PM, MikeLDrew at aol.com wrote:

> 
> In a message dated 3/26/12 14 16 56, asajay at asajay.com writes:
> 
> 
>> and after installing a freeze plug (press fit) in the hole so a normal 
>> thermostat can be used.  Note this removes the bypass function and 
>> leads to longer warm-up times.
>> 
> 
> It does much more than that.   What it means is that (unless you have 
> drilled holes in your thermostat), you have ZERO water movement inside the engine 
> until the thermostat opens.   When the engine is cold, you start it up and 
> the pump is just churning away, cavitating because the water can't go 
> anywhere.   As the engine heats up, because there's no flow, it heats up unevenly, 
> potentially allowing steam pockets to form.   Eventually the coolant warms 
> up enough (via internal heat radiation) that the thermostat can open, then 
> WHAM!   A blast of icy cold water from the radiator comes pouring into your 
> steaming hot engine.   It runs around and hits the thermostat, and WHAM!   It 
> slams shut, and the whole process repeats.
> 
> The engine is subjected to repeated super-hot-super-cold cycles until 
> eventually the coolant is warm enough to keep the thermostat open all the time, 
> and then eventually it reverts to normal operation.   But think of the 
> thermal stress that you're subjecting the engine to!   And for what?   So that you 
> don't have to run a 351C thermostat?
> 
> Makes no sense to me....
> 
> Mike
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