[DeTomaso] question for all you rocket scientists

Rick rwgushue at gte.net
Wed Jun 20 01:39:58 EDT 2007


   I asked my brother-in-law who IS a rocket scientist for Boeing and he 
said none of this is worth replying to... his words, not mine...probably 
what the Dawg would say too.
Rick
1582

Paul Memont wrote:
> I agree that the hoses and such are indeed flexible and give some, but 
> with pressure building while engine heat rises these parts hold the 
> pressure otherwise they burst and a boil over results.  Doesn't the 
> spring determine the pressure setting?  I would agree that a huge change 
> in outside pressure might have an effect on the caps inside pressure and 
> thus the boiling point.
> 
> Am I loosing it?
> 
> Thanks for your patience,
> 
> Paul
> 
> 
> 
> Stephen Waybright wrote:
> 
>>Isn't the pressure rating of the cap relative to the outside ambient
>>pressure? You essentially have ambient pressure outside the face of cap
>>valve, plus the spring which provides the force to oppose internal
>>pressure difference up to the caps PSI rating.
>>
>>
>>--- arado7 at sbcglobal.net wrote:
>>
>>  
>>
>>>Subject: Re: question for all you rocket scientists
>>>
>>>
>>>    
>>>
>>>>Unless I just don't understand, with a radiator cap on the car the
>>>>      
>>>
>>>amount 
>>>    
>>>
>>>>of oxygen in the air would not matter to the temp in the radiator. 
>>>>      
>>>
>>>The 
>>>    
>>>
>>>>boiling point would be higher depending on the rating of the cap
>>>>      
>>>
>>>and not 
>>>    
>>>
>>>>the outside air.
>>>>
>>>>Guide me if I'm wrong.
>>>>
>>>>Paul
>>>>      
>>>
>>>The cooling system of a car is not a rigid sealed system. There are
>>>rubber 
>>>hoses and flexible sheet metal elements in radiator and heating coil.
>>>
>>>Therefore I believe atmospheric pressure would influence boiling
>>>point. 
>>>Gary  B9472283 
>>>    
>>
>>
>>  
> 
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