[DeTomaso] thermostats

Wed Jun 24 17:58:24 EDT 2009

Yeah, we don't have many gas stoves around here but it's a valid warning. :-) The wife could boil over anyway...

Tomas

----- Original Message ----- 
From: "Art Stephens" <artstephens at verizon.net>
To: "Tomas Gunnarsson" <guson at home.se>; "Doug Braun" <doug at silicondesigns.com>; "Thomas Tornblom" <Thomas.Tornblom at hax.se>; "Charles McCall" <charlesmccall at gmail.com>
Cc: <detomaso at realbig.com>
Sent: Wednesday, June 24, 2009 11:50 PM
Subject: Re: [DeTomaso] thermostats

>" I'd suggest boiling the thermostat in e.g. oil that has a boiling temp 
> higher than water."
> 
>      Just don't let the oil boil over into the flame.  I would imagine the 
> wife would be pissed if you burned the house down.  :-))
> 
> Art
> 
> 
> 
>>
>> Tomas
>>
>> ----- Original Message ----- 
>> From: "Doug Braun" <doug at silicondesigns.com>
>> To: "Thomas Tornblom" <Thomas.Tornblom at hax.se>; "Charles McCall" 
>> <charlesmccall at gmail.com>
>> Cc: <detomaso at realbig.com>
>> Sent: Wednesday, June 24, 2009 10:29 PM
>> Subject: Re: [DeTomaso] thermostats
>>
>>
>>> Thomas,
>>>
>>> The four brands of 351W thermostat I've tried were drastically different
>>> from each other in how far they extend when hot.  For those using a 351W
>>> T-stat in a 351C it's quite plausible that the longest of them will hit a
>>> "freeze plugged" orifice in a 351C block when hot which will prevent them
>>> from fully opening.  If you don't have access to a good thermometer, 
>>> measure
>>> the thermostat in boiling water to check how far it extends and compare 
>>> that
>>> to the space available in the block.  Better yet, place the thermostat in 
>>> an
>>> oven with a metal ruler alongside, take the temperature up to about 250F,
>>> and see if it extends further at 240F than it does at 212F.  Don't to too
>>> hot though; some thermostats have a fail-safe design where they 
>>> permanently
>>> stick open when overheated.
>>>
>>> Doug Braun
>>> blue 73L #5505
>>>
>>> -----Original Message-----
>>> From: detomaso-bounces at realbig.com
>>> [mailto:detomaso-bounces at realbig.com]On Behalf Of Thomas Tornblom
>>> Sent: Wednesday, June 24, 2009 12:05 PM
>>> To: Charles McCall
>>> Cc: detomaso at realbig.com
>>> Subject: Re: [DeTomaso] thermostats
>>>
>>>
>>> Charles McCall skrev:
>>>> Jack, didn't you find about 5 years ago or so that there was something
>>> funky
>>>> with your thermostat housing or some part of the cooling system that
>>>> physically sideloaded the thermostat causing your premature failures?
>>>
>>> I found that the windsor style thermostat would hit the freeze plug that
>>> was installed instead of the plate in my original motor when it opened
>>> fully. Over time that made the thermostat crooked so that it didn't work
>>> properly after a while.
>>>
>>> The thermostat sits a bit low in the block, and if one blocks off the
>>> warmup passage, it would probably be a good idea to install a spacer
>>> under the thermostat so that it has plenty of space to operate.
>>>
>>> I do think that blocking the passage and using a remote bypass
>>> thermostat is probably the best solution to the problem.
>>>
>>> I'm now using a proper block plate and a proper Cleveland Robertshaw
>>> thermostat, and I haven't had any problems with it.
>>>
>>> Oh, btw Charlie, your suggestion about shimming the steering rack may in
>>> fact be a good advice. I took it for a drive this afternoon, and I now
>>> notice a distinct play in the steering wheel with the wheels pointing
>>> straight.
>>>
>>> Thomas
>>>
>>>
>>>>
>>>> Annually failing thermostats aren't one of the traits that Panteras are
>>>> known for... I hate to tempt fate, but I've never had one go bad, and my
>>>> current Robert Shaw is 9 years old.. It would make me think that there 
>>>> is
>>>> something specific in your application as opposed to the root cause 
>>>> being
>>>> the thermostat per se...
>>>>
>>>> Then again maybe I imagined it, but I thought I remembered you saying 
>>>> that
>>> a
>>>> light bulb came on several years ago while re-hashing the cooling 
>>>> system.
>>>>
>>>> Charles McCall
>>>> 1985 DeTomaso Pantera GT5-S #9375
>>>> "Raising Pantera Awareness Across Europe"
>>>> http://www.poca.com/index.php/gallery/?g2_itemId=2323
>>>> -----Mensaje original-----
>>>> De: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] 
>>>> En
>>>> nombre de JDeRyke at aol.com
>>>> Enviado el: miércoles, 24 de junio de 2009 20:06
>>>> Para: cengles at cox.net
>>>> CC: detomaso at realbig.com
>>>> Asunto: Re: [DeTomaso] thermostats
>>>>
>>>> In a message dated 6/24/09 6:28:06 AM, cengles at cox.net writes:
>>>>
>>>>> I am very interested. Is it possible that you've hit on one of the most
>>>>> elusive factors in the variability (or unpredictability?) of Pantera
>>>> cooling
>>>>> systems-----the unassuming "correct" thermostat??? Publish that article
>>>>> soon.
>>>>>
>>>> OK. My interest is, although I can use about any old thermostat in our
>>>> 351C- even ones for Chevys, they only last 1 year before they start that
>>>> cycling
>>>> between full-open and full-closed that someone wrote about. While its 
>>>> only
>>>> annoying, its an expense and a chore I can do without. Cheers- J Deryke
>>>>
>>>>
>>>>
>>>> **************
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>>>
>>>
>>> --
>>> Real life:   Thomas Törnblom             Email:  Thomas.Tornblom at Hax.SE
>>> Snail mail:  Banvallsvägen 14            Phone:    +46 18 444 33 21
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