[DeTomaso] Pressure Cap

[asajay at asajay.com]

I've been working implement this very thing on my Pantera, though it  
may move to a winter project.

One big question still lingers for me though.

Also attached to the new fill/expansion tank, is a bleed from the HOT  
side.  A small tap on the outlet tube attaches to the same tank.  So  
why doesn't -that- connection pressurize the tank to the same level  
the hot side is already?

I realize it's supposed to be an air bleed, but pressure is pressure  
isn't it?  If that connection is on the highest pressure line of the  
cooling system, why doesn't it affect the tank?

Terribly curious and no good at fluid dynamics much less thermal dynamics.

Asa Jay


Quoting Barry Seib <oldwheel at mts.net>:

> Yes Jack
> That's what the Mike Trusty/John Taphorn mods accomplish.You can use the
> heater return port in the water pump to connect to the expansion/fill tank
> (which has the pressure cap on it). No more tank on the hot side and no more
> restriction to getting the hot coolant to the rad. That's not the only way
> to do it. The flowkooler pump has a second theaded port to the return side
> anyway, but I'm using that for my fan temp sensor. John's heater is fed and
> returned up front, but you wouldn't have to do that. He also used a bypass
> thermostat, and some bleed pipes at the back of the heads, but those things
> are also optional. What is most important is to remove the tank and pressure
> cap from the pressure (HOT) side and move it to the cooler return side.
>
> http://www.spacecitypanteras.com/Technical/pantera_coolant_flow.jpg
>
> http://www.spacecitypanteras.com/Technical/Pantera_Cooling-JTaphorn.pdf
>   -----Original Message-----
>   From: JDeRyke at aol.com [mailto:JDeRyke at aol.com]
>   Sent: Wednesday, August 19, 2009 3:07 PM
>   To: oldwheel at mts.net; detomaso at realbig.com
>   Subject: Re: [DeTomaso] Re: Pressure Cap
>
>
>   In a message dated 8/19/09 12:38:44 PM, oldwheel at mts.net writes:
>
>
>     What I referred to as the "hot side" is the tank and pipes between the
> engine outlet and the radiator
>
>
>   So the cap 'should' be on the water pump side of the engine? That seems
> unweildy on a Pantera unless its up front somewhere.... Curious- J Deryke
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