[Healeys] Aluminum Radiator

[Oudesluys]

When a car is coasting down a long slope it does not burn much 
fuel/generates much heat. Certainly not enough to keep up the 
temperature so after a while the whole system/engine starts to cool down 
as the heat dissipated to the environment is more than the heat 
generated from combustion.
Kees Oudesluijs


Bob Spidell schreef op 15-10-2014 16:48:
> Also, on a warm day when I shut down the temp will go to exactly 
> 212degF (100degC), which gives me more confidence the gauge is correct 
> (what my dad calls 'latent heat' causes the coolant to go the boiling 
> point).
>
> Bob
>
>
> On 10/15/2014 7:34 AM, Bob Spidell wrote:
>> My gauge was recently refurbished and calibrated by West Valley 
>> Instruments (the former 'Mo' in MoMa), so I'm reasonably confident 
>> it's accurate.   My temp will stay below the thermostat set point 
>> (180degF) on a cool day. Coasting down a hill, it often gets below 
>> 160.  Driving along steady on a mild day it will stay at 180 
>> (expected), then exceed that on a hot day pulling a load or sitting 
>> in traffic.  My heater is usually off--but the valve on the block is 
>> open year-round--and I've used it as an 'auxiliary radiator' when it 
>> gets close to 212deg.
>>
>> So, assuming the gauge is correct, why is my temp often below 180 
>> (Kees?).  The only explanation I can think of is that the engine is 
>> sufficiently air-cooled in benign conditions to keep the thermostat 
>> closed.  I've tried several thermostats with same result, and have 
>> tested a couple on the stove in hot water. Apparently, others are 
>> experiencing the same phenomenon.
>>
>> Bob