[DeTomaso] Radiator

Sun May 22 00:05:53 EDT 2022

Eric,

I once bought a Pantera that had blowed up due to overheating. It turns out when the cooling pipes were made, somebody left a forming mandrel inside one of the pipes, blocking 95% of the flow! It then sat for 30 years. 

A friend and I bought it, spent a few weeks getting it running and sold it as a restoration project, to England. It later became the nicest (and most expensive) 1971-74 Pantera in England….

Mike

Sent from my iPad

> On May 21, 2022, at 23:35, Eric Smith via DeTomaso <detomaso at server.detomasolist.com> wrote:
> 
>    I agree that the bypass should be removed and the correct insert
>   installed.  I'm getting one from TMeyer with their thermostat before I
>   install the drivetrain.  Either way, the engine overheated before I
>   installed the bypass.  However, the bypass was installed before and
>   after the rebuild, so that's a pretty fair point but it won't be a
>   variable after the install.
> 
>   The fans were puller fans that was actually pulling air out the back.
>   Fairly easy to tell.  The reason I put the vents in the hood was a
>   phone call with a Pantera vendor telling me that hot air would be
>   trapped behind the radiator.  So I put the vents in figuring they knew
>   better than me.
> 
>   I heard about the temperature gauge being off but mine was within 10
>   degrees of the mechanical gauge and was definitely overheating to the
>   point of the pressure cap blowing and after that, I decided to rebuild
>   the engine.  No difference after the rebuild.
> 
>   The engine would overheat whether I was driving on the interstate or
>   stopped in traffic.  Stopped in traffic would cause it to overheat
>   quicker but the end result was the same.  The Accel distributor was set
>   at the factory specs but I can't remember what it was.  I want to say 8
>   btdc, but it's been decades.  It started up great and didn't ping
>   (8.5:1), just would eventually overheat.
> 
>   I do appreciate everyone's insight and help.  I take all opinions
>   seriously with this Pantera group.
> 
>   Sent from my iPhone
> 
>     On May 21, 2022, at 9:52 PM, B Hower <b.hower3400 at yahoo.com> wrote:
> 
>   I have had outer timing ring slip 30 degrees on a 351C. A long story of
>   x- wife bringing car to me after someone tuned it and it did not run to
>   please.
>   On Saturday, May 21, 2022, 10:18:56 AM CDT, Ken Green via DeTomaso
>   <detomaso at server.detomasolist.com> wrote:
>     Overheating in a normal afternoon drive, or in traffic, or at high
>     speeds?
>     Could your timing be retarded by bad timing marks or?  I think that
>   can
>     cause overheating.
>     On Saturday, May 21, 2022, 07:24:49 AM PDT, Eric Smith via DeTomaso
>     <[1]detomaso at server.detomasolist.com> wrote:
>     I did install a plate for the bypass thatas under the thermostat.  I
>     bought it from Pantera Performance back in 1990ish and was one of the
>     first things done to try and keep it from overheating.  It had a
>   penny
>     soldered in the hole, completely blocking the bypass.  It made no
>     difference at all.  Tried all the correct thermostats with different
>     opening temps, and even no thermostat, but no luck.  I focused on air
>     in the system after that but it still overheated.  Bought an aluminum
>     radiator with puller fans from Pantera Performance, then installed
>   the
>     vents in the hood and it still overheated.  Installed a high volume
>     aluminum water pump and it seemed to take longer to overheat but
>   still
>     would overheat.  I replaced the water pipes with a larger water pipe,
>     that looks like shit, but I was desperate, and again, it took longer
>   to
>     overheat but still eventually did, even on a cool day.  Sent it to a
>     radiator shop and he came to the conclusion that the engine needed to
>     be rebuilt.  Mainly because he couldnat find any reason for
>     overheating.  So thatas what I did.  Stock rebuild and open chamber
>     heads, and it still overheated.  This was back in 1991-92.  The head
>     gaskets were installed correctly and the block and heads were
>   inspected
>     for scaling, then hot tanked.
>     Since a much stronger engine is about to be installed, Iam thinking I
>     need the best cooling system possible so I donat have to worry about
>   it
>     anymore.
>     Sent from my iPhone
>>> On May 21, 2022, at 9:57 AM, Eric Smith
>>   <[1][2]ericjsmith7 at yahoo.com>
>>     wrote:
>> 
>> i>>?
>> 
>> Sent from my iPhone
>> 
>>> On May 20, 2022, at 5:00 PM, Scott Mead Photography
>     <[2][3]scott at scottmeadphotography.com> wrote:
>>> 
>>> i>>?Hi Eric,
>>> 
>>> A couple years ago, Don Byars installed one of Hallas lay down,
>     brass radiators (with sucker fans) in my car. The acid test on my way
>     home was a couple of hours of bumper-to-bumper traffic, in 102ADEG
>   heat
>     with the AC blasting. My temp gauge never got above 185ADEG. Driving
>   to
>     and from this yearas Fun Rally, the needle on the temp gauge hardly
>     moved a few degrees from cruise to stopped in traffic. I truly canat
>     say enough good things about this setup, and I no longer have my eyes
>     glued to the temp gauge - ever!!!
>>> 
>>> Have a great weekend,
>>> 
>>> Scott
>>> 
>>> Sent from my iPhone
>>> 
>>>>> On May 20, 2022, at 9:18 AM, Eric Smith via DeTomaso
>     <[3][4]detomaso at server.detomasolist.com> wrote:
>>>> 
>>>> i>>?About to install the drivetrain in my 71.  I had overheating
>     issues since Iave owned the car, but itas been 30 yrs since it was
>   last
>     on the road.  What is the best cooling system made to make sure this
>     issue never happens again?
>>>> 
>>>> Sent from my iPhone
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