[DeTomaso] TESTED: Re: Pressure Cap

[Asa Jay Laughton]

Just think of my location as the "Pantera Research Institute: Field 
Extension Office."

:)
Asa Jay

Charles Engles wrote:
> Dear Mr. Science,
>
>
>                   Very impressive laboratory work in your spare time after dinner!    Well done.
>
>
>                                     Warmest regards,  Chuck Engles
>
>
> ----- Original Message ----- 
> From: "Asa Jay Laughton" <asajay at asajay.com>
> To: "Pantera REALBIG forum" <detomaso at realbig.com>
> Sent: Tuesday, August 18, 2009 9:35 PM
> Subject: [DeTomaso] TESTED: Re: Pressure Cap
>
>
>   
>> Well, you can call me dumb, just don't call me stupid.
>>
>> I finally did what I should have done months ago.  I tested the swirl 
>> tank with the radiator cap.  I have a Motocraft 13 lb cap that has 
>> worked for years on the Mach I.   This same cap has been on my Pantera 
>> for a long time... and I've always had a boiling over problem.
>>
>> I removed the swirl tank some time ago in preparation for a cooling 
>> system re-design.  As I'm running short on time and will have all winter 
>> to sort things like that out, I decided to see about putting the stock 
>> system back together, with the new stainless pipes, new hoses, etc.  
>> I'll need a new overflow tank for those that remember the gaping holes, 
>> but the swirl tank appears to be intact.
>>
>> I rigged up a cooling system pressure tester to it this evening.  I 
>> installed the 13 lb cap and got copious amounts of leakage at less than 
>> 9 lb of pressure.
>>
>> I then took another cap I had, rated for 15-18 lb, and it leaked like a 
>> sieve at around 11.
>>
>> I believe I found part of my problem.  I'll be trying to find a local 
>> shop to change out the water neck.
>>
>> Tonight adventure brought to you in photos, starting here:
>> http://www.teampanteraracing.com/index.php?option=com_g2bridge&view=gallery&Itemid=57&g2_itemId=3024
>>
>> Asa Jay
>>
>> Asa Jay Laughton, MSgt, USAFR, Retired
>>
>> & Shelley Marie
>> Spokane, WA
>>
>> 1971 Mach I Mustang  [ASA JAY]
>> 1973 Pantera L 5533  [ASASCAT]
>>    
>> ******************************     
>> http://www.asajay.com
>> http://www.teampanteraracing.com
>>  
>>
>>
>>
>> Thomas Borcich wrote:
>>     
>>> This probably has been brought up many times, but it is the first mod I did to my car when I got it (a Dick Dreske suggestion)...replace the radiator neck on the tank with an American neck ($30 at most radiator shops) and then you can use an American pressure cap from any Ford or Chevy for $6-10 at ANY auto parts store nationwide. No guessing and if your out of town stop at Kragen, Pep Boys etc. and they will have one. I use the standard Stant 16 pound cap with the pressure release lever.
>>>
>>> Best regards,
>>>
>>>
>>>
>>> Tom Borcich
>>>
>>>
>>>
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