[DeTomaso] TESTED: Re: Pressure Cap

Charles Engles cengles at cox.net
Tue Aug 18 22:49:31 EDT 2009


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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