[DeTomaso] TESTED: Re: Pressure Cap

Asa Jay Laughton asajay at asajay.com
Tue Aug 18 22:59:46 EDT 2009


By the way... I did test the caps separately to make sure it wasn't just 
the cap.

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
  



Asa Jay Laughton wrote:
> 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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