[DeTomaso] weird oem pressure tank received from rs corse in modena

[Charles Engles]

Dear Bob,


            They are there to duplicate the "improved" cooling system on the
L model.  The small lines were supposed to automatically vent air from the
radiator back via the small hose to the small fittings on the tank.  Great
idea, but it did not function as hoped.  I have had my line disconnected on
both of L Panteras for a few decades and there is no problem.   I would
recommend having them welded shut as you suggest or seriously closed by some
other method.  If I understand correctly about your radiator, then you use a
normal petcock in the upper left corner and a normal petcock on the lower
left.  If you want to go fancy, then buy a ninety degree petcock to make all
future coolant draining a simple task by fitting rubber hose over the ninety
degree fitting to prevent messy green puddles.  

             It has been so long that I looked at the radiator cap, that I
can't recall what pressure they are.  I am sure someone else knows.

            It should be a pretty easy installation.  Good luck.

                        Warmest regards, Chuck Engles



-----Original Message-----
From: detomaso-bounces at poca.com [mailto:detomaso-bounces at poca.com] On Behalf
Of LEVITT1946 at aol.com
Sent: Wednesday, April 03, 2013 7:55 PM
To: detomaso at poca.com
Subject: [DeTomaso] weird oem pressure tank received from rs corse in modena

Hello All,
 
I am replacing my old pressure tank and my overflow tank. I ordered my
original tanks from RS Corse in Modena Italy .
 
The pressure tank has the normal 3/8 ths connection at the neck , opening
for the temp sending unit, lower and upper radiator hose size connections.  
Besides the normal hose connections this new pressure tank has two extra
hose connections the size of toothpicks at the top quarter of the tank. When
I  asked RS Corse what these connections were for ,they replied and said it
was  used to purge air from the radiator . They told me to run a line to the
upper  radiator petcock so the cooling system would purge air when needed. 
 
My question is :
 
Does this make sense?
 
If it does make sense what kind of petcock valve do I put in place of the
standard petcock in my fluidyne radiator ?
 
Or 
 
Should I just have the two small toothpick size connectors on the pressure
tank welded shut ?
 
Open for suggestions. I am also open for suggestions on what radiator cap
and psi to use with the pressure tank. 
 
Best Regards,
Bob Levitt
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