[DeTomaso] thermostats

Wed Jun 24 17:50:29 EDT 2009

" 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
>>              S - 754 40 Uppsala, Sweden  Cellular: +46 70 261 1372
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