[DeTomaso] Cooling system

[Stephen]

As we have gotten to know our new Brock Daytona I have been reminded of all
the things that contribute to a car overheating.  Besides the obvious (too
little coolant, fans not spinning, radiator full of bugs or plugged
internally) one must also think about things like the timing and the fuel
mixture.  Our Daytona with its 427R was prone to getting warm.  Found that
the timing was off by about 5 degrees (retarded) and the fuel mixture was
way lean.  Do these things matter?  Well, after getting the timing right and
resetting the fuel pressure (was at 2, recommended 6 psi), the float levels
(down a quarter of an inch) and the idle mixture, wow - not only runs
cooler, but the increased hp showed the clutch was not fully releasing - so
next adjusted the length of the slave cylinder rod.  

Of course, to get the timing I wanted (as recommended by folks on the
Superformance forum - 18 to 20 degrees BTDC at 1,000 rpm and 34 or 36 at
2,500 rpm) I ended up needing to turn a custom bushing for the MSD
distributor.  But, wow, does she now pull! 

Stephen Nelson  5332



-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf
Of Rich
Sent: Wednesday, July 27, 2016 6:52 AM
To: Rob Dumoulin <rob at dumoulins.net>; Pantera Mail List
<detomaso at server.detomasolist.com>
Subject: Re: [DeTomaso] Cooling system

I think you also have to consider the location you live in.
I have had 3 or 4 different brass radiators.  About every radiator Hall sold
and then some.
In Arizona the only radiator that kept the car cool was the Ron Davis.
The combination of radiator and Dennis's fans makes it work without ever
being a problem.
Rich





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