[DeTomaso] new radiator and fans????

[Ken Green]

You're right, if you don't need better cooling, why throw the $s at it.
You might look at the Stewart Components tech tips on radiators:
http://stewartcomponents.com/index.php?route=information/information&information_id=13
some interesting incite on radiator design.
I picked up a couple Ron Davis super speed way radiators maybe 10 years ago.  The are big single pass and about 6 inches thick.  I passed one to Dennis (Mad Dawg) and kept one. Dennis has been running it for maybe 10 years, and the last I heard it is by far the best radiator he has ever had, both on the street, and open road racing.  The funny thing is that when I called the Ron Davis tech line they didn't recommend it for the street and said it was made for a 200 MPH racing and wouldn't work well on the street (too thick).  It seems like the Stewart article was correct and the thickness has a small affect.
I talked to the people at Evans Coolant and they had worked with a Pantera race car.  They said that when they used a higher capacity pump they experienced cavitation at higher RPM because there was so much resistance to flow in a Pantera.  The cavitation is really bad because bubbles in the coolant reduce heat transfer.  Because of that, and the Stewart article, I think a large single pass radiator is a good solution for a Pantera if you run a high performance pump at higher RPM (I'm not sure what that RPM is).
Ken

      From: Larry Finch via DeTomaso <detomaso at poca.com>
 To: Ken Green <kenn_green at yahoo.com> 
Cc: DeTomaso Forum <detomaso at poca.com>
 Sent: Monday, March 7, 2016 4:41 PM
 Subject: Re: [DeTomaso] new radiator and fans????
   
  Thanks, Ken.

  That had crossed my mind, too. If I was TOTALLY starting from scratch
  on a basket-case, everything-in-boxes car, John's approach would likely
  be considered.

  However, as my prior system worked fine and I have the 12volt 4-port
  bypass valve installed on the heater lines, I am not too inclined to
  take on John's modifications.

  Sometimes, I think there is some wisdom to - "If it ain't broke, don't
  `fix' it."

  ;-)

  Larry

  On Mar 7, 2016, at 3:59 PM, Ken Green <[1]kenn_green at yahoo.com> wrote:

  You might want to look at John Taphorn's cooling design.  It is not a
  trivial change, but appears to be the current thinking:
  [2]http://www.spacecitypanteras.com/Technical/Pantera_Cooling-JTaphorn.
  pdf

References

  1. mailto:kenn_green at yahoo.com
  2. http://www.spacecitypanteras.com/Technical/Pantera_Cooling-JTaphorn.pdf

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-------------- next part --------------
   You're right, if you don't need better cooling, why throw the $s at it.
   You might look at the Stewart Components tech tips on radiators:
   [1]http://stewartcomponents.com/index.php?route=information/information
   &information_id=13
   some interesting incite on radiator design.
   I picked up a couple Ron Davis super speed way radiators maybe 10 years
   ago.  The are big single pass and about 6 inches thick.  I passed one
   to Dennis (Mad Dawg) and kept one. Dennis has been running it for
   maybe 10 years, and the last I heard it is by far the best radiator he
   has ever had, both on the street, and open road racing.  The funny
   thing is that when I called the Ron Davis tech line they didn't
   recommend it for the street and said it was made for a 200 MPH racing
   and wouldn't work well on the street (too thick).  It seems like the
   Stewart article was correct and the thickness has a small affect.
   I talked to the people at Evans Coolant and they had worked with a
   Pantera race car.  They said that when they used a higher capacity pump
   they experienced cavitation at higher RPM because there was so much
   resistance to flow in a Pantera.  The cavitation is really bad because
   bubbles in the coolant reduce heat transfer.  Because of that, and the
   Stewart article, I think a large single pass radiator is a good
   solution for a Pantera if you run a high performance pump at higher RPM
   (I'm not sure what that RPM is).
   Ken
     __________________________________________________________________

   From: Larry Finch via DeTomaso <detomaso at poca.com>
   To: Ken Green <kenn_green at yahoo.com>
   Cc: DeTomaso Forum <detomaso at poca.com>
   Sent: Monday, March 7, 2016 4:41 PM
   Subject: Re: [DeTomaso] new radiator and fans????
     Thanks, Ken.
     That had crossed my mind, too. If I was TOTALLY starting from scratch
     on a basket-case, everything-in-boxes car, John's approach would
   likely
     be considered.
     However, as my prior system worked fine and I have the 12volt 4-port
     bypass valve installed on the heater lines, I am not too inclined to
     take on John's modifications.
     Sometimes, I think there is some wisdom to - "If it ain't broke,
   don't
     `fix' it."
     ;-)
     Larry
     On Mar 7, 2016, at 3:59 PM, Ken Green <[1][2]kenn_green at yahoo.com>
   wrote:
     You might want to look at John Taphorn's cooling design.  It is not a
     trivial change, but appears to be the current thinking:

   [2]http://www.spacecitypanteras.com/Technical/Pantera_Cooling-JTaphorn.
     pdf
   References
     1. mailto:[3]kenn_green at yahoo.com
     2.
   [4]http://www.spacecitypanteras.com/Technical/Pantera_Cooling-JTaphorn.
   pdf
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References

   1. http://stewartcomponents.com/index.php?route=information/information&information_id=13
   2. mailto:kenn_green at yahoo.com
   3. mailto:kenn_green at yahoo.com
   4. http://www.spacecitypanteras.com/Technical/Pantera_Cooling-JTaphorn.pdf
   5. mailto:DeTomaso at poca.com
   6. http://poca.com/mailman/listinfo/detomaso_poca.com