[DeTomaso] To thermostat or not to thermostat

[Will Kooiman]

I agree with Mikey about running the Robert Shaw 333-180 thermostat.  There
aren't any downsides to running a thermostat - unless you get a cheapo
thermostat - which the Robert Shaw is not.

I don't buy the idea that you have to slow down the water or it won't cool
enough.  It makes more sense to me that if you don't restrict the water,
it'll cool too much.  So, in other words, if you're not running a
thermostat, and the engine is running too cool, put a smaller restrictor in
place.  This only makes sense in a controlled environment - like dirt track
racing.

This is one of those topics that, in my opinion, we over analyze.  Use a
proper thermostat so it'll stay hot enough.  Get rid of the air in the
system.  Make sure the fans are working properly.  That's all it takes.  Oh
yeah, stainless pipes/tanks and green stripe hoses, but that's more for
corrosion/leak protection - not cooling.

By the way, I haven't had a high pressure/swirl tank in over 4 years.  I
haven't put many miles on my car the last year (mostly due to traveling for
work), but before that I drove it 1,000 miles a month.  The only time it
overheated was when the fans stopped working - and that was in 100+ degree
weather in stop/go traffic, up hill, with no shoes on.

Will.

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of MikeLDrew at aol.com
Sent: Tuesday, May 20, 2008 9:22 PM
To: jimgray at cableone.net; detomaso at realbig.com
Subject: Re: [DeTomaso] To thermostat or not to thermostat


In a message dated 5/20/08 18 45 54, jimgray at cableone.net writes:


> My question is, since we always make a big deal about using the correct
> Cleveland style thermostat, what happens when there is no "hat" on a
> thermostat to close off the warm-up passages?  Does the water just go
around
> and around in the engine?
> 

Yes, unless it is blocked off.   Some aftermarket pumps block off that 
passage.   Some engine builders will hammer a plug into the orifice normally
blocked 
by the 'hat'.   In both cases, that then allows you to run a Windsor 
thermostat.

Although thermostats are a possible failure point, a good quality thermostat

rarely fails, and their benefits far outweigh their liabilities IMHO.   As 
your engine builder pointed out, you can't run NOTHING there; a restrictor
of 
some sort is needed to maintain appropriate pressure/volume.   

I would suggest running a top-quality RobertShaw 351C thermostat (part
number 
333-180 for a 180-degree unit), available from Summit and others.

Mike


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