[DeTomaso] Cleveland Specific Thermostat

Kirby Schrader kirby.schrader at gmail.com
Thu Sep 29 09:29:47 EDT 2011


The 'Mike Trusty/John Taphorn' cooling mod does all of this and more.

Both my cars are now modified this way, Jack's GT40 and Mike's Pantera and
GT40 are, too and we plan to have Dylan's car set up the same way. All the
nice pipes and stuff ready to go.  :-)

Obviously, JT's Pantera is this way and many of the other guys have done it
and are happy.


I'm impressed with how it performs on both my GT40 and the Pantera.

I think the Ford engineers did do a good job on the concept, but if the
thermostat and bypass don't quite match up perfectly, then you bypass ALL
the time and that's the usual problem.

On Thu, Sep 29, 2011 at 08:17, <MikeLDrew at aol.com> wrote:

>
> In a message dated 9/28/11 18 55 2, SOBill at aol.com writes:
>
>
> > A way to eliminate this situation, IMHO, is to totally  block the bypass
> > path and use a Windsor style thermostat.
> >
>
> True..but doing so defeats the warm-up circuit in the engine, and forces
> all the water to pass through the radiator.   That sounds like a good deal,
> but the engine was originally designed to have a certain amount circulating
> through it at all times.
>
> If you look at any other Ford engine family (289/302, 390/427/428,
> 429/460), you'll see that each of them has an external bypass hose which
> takes water
> from the area of the intake manifold/thermostat and sends it to the water
> pump.   In ALL of those motors, a certain percentage (let's guesstimate
> around 22%, same as the 351C) of the coolant always bypasses the radiator.
>   The
> 351C is the only engine family that manages this internally.
>
> It's been explained to me by people who are far smarter than I am on
> engines (which is most people) that this bypass stuff is a good thing.
> Not doing
> so can create hot spots as the engine heats up unevenly with no water
> circulation through it.   Realize that if you block the bypass, when the
> thermostat is closed there is no water flow at all--the water pump is
> cavitating the
> whole time, and the water in the engine is just sitting there, stationary,
> as the engine heats up.   It doesn't heat evenly, so the water is
> superheated in places by the time the thermostat opens.   When it does,
> WHAM, ice-cold
> water is then dumped into part of the engine as the hot water exits.
>
> The bypass setup does away with all of this.   The Ford engineers were some
> pretty smart cookies, and I have been convinced that their thinking in
> terms of the cooling setup needs to be respected.
>
> Cheers!
>
> Mike
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