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Quality 180F Thermostat

Old Jul 17, 2012 | 07:59 PM
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Default Quality 180F Thermostat

Fits like it was made for it.
Stant Superstat - 45858 - $9.99 at Advance Auto
I crossed it from a Gates 33478S, so I expect that would work also.
It's a slightly off center design with a jiggle pin (to help bleeding the air out) in the flange.
Stainless steel, brass and copper.
Felpro 12994 gasket.

Edit: added gasket PN
From my testing it appears US thermostat temperatures are listed as the start to open temp and are fully open at as much as an additional 10 degrees, whereas the OE thermostat, 88c, is the temp when it's fully open. Nearly all auto parts stores list a 195, which is too hot.
 

Last edited by antichrist; Jun 28, 2013 at 06:26 AM.
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Old Jul 17, 2012 | 08:08 PM
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nice find. thanks for posting.
 
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Old Jul 18, 2012 | 11:23 AM
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I got a "precision" MotoRad one.....kinda hesitant to put it in.
 
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Old Jul 18, 2012 | 12:17 PM
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Originally Posted by wheelgarage
I got a "precision" MotoRad one.....kinda hesitant to put it in.
I don't really know anything about those, but I don't get the point. Fully open is fully open, I would think.
If you're running a 180 and you overheat the thermostat is going to be fully open. Supposedly the MotoRad locks fully open if you overheat. Does that make it more fully open than any other 180 that's fully open?

I must be missing something.
 
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Old Jul 18, 2012 | 12:31 PM
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I don't recommend the locking thermostats. I had a locking 180. While driving up a mountain the temp reached about 208 and the thermostat decided to lock open. The whole drive home the temp wouldn't climb higher than 140, so I had to replace it.
 
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Old Jul 18, 2012 | 11:58 PM
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Originally Posted by antichrist
Supposedly the MotoRad locks fully open if you overheat.
When it fails.....

Actually, this one is not a fail-safe unit....MotoRad ETC4765 88C 192-200F. From reading around, it seems that this range is ideal...fully open at 200F. I got this one from my local parts dealer, so I might return it for the fail-safe unit.

Originally Posted by EricTyrrell
I don't recommend the locking thermostats. I had a locking 180. While driving up a mountain the temp reached about 208 and the thermostat decided to lock open. The whole drive home the temp wouldn't climb higher than 140, so I had to replace it.
After a recent head replacement on another car, I installed a MotoRad fail-safe thermostat. It worked for the first 50 miles, then failed sideways, meaning one side locked open. I replaced it using the same one and it hasn't failed yet, about 10k miles on it now.

At least it did its job and it got me home safe. If a normal one failed, it would have been on a tow truck.
 
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Old Jul 19, 2012 | 07:13 AM
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Originally Posted by wheelgarage
When it fails.....
Unlike standard thermostats, the Motorad Fail-SafeŽ thermostat, is built with an extra stroke that automatically locks into an open position when an overheating condition occurs.
MotoRad - Fail SafeŽ Thermostat

Google fail safe thermostats, aside from the motorad links, it's complaint after complaint about them.

MotoRad ETC4765 88C 192-200F. From reading around, it seems that this range is ideal...fully open at 200F.
Fully open at 200F is too hot. OE is fully open at 88C, or 190F.
 

Last edited by antichrist; Jul 19, 2012 at 08:46 AM.
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Old Jul 19, 2012 | 10:19 AM
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Amen on the lower temps.
 
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Old Jul 19, 2012 | 10:22 AM
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Oddly...it states on the box...

MotoRad ETC4765 "88C" 192-200F....

If 88C is ideal, why the heck does it state "192-200F"??

Now I'm confused...
 
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Old Jul 19, 2012 | 11:48 AM
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IMHO I believe that practice in USA is stamp stat with start to open temp, while on the other side of the pond fully open temp is marked. So a 195F stat in US won't behave the same as one destined for the Euro market. The stats are not "snap action, they slowly open and close, you can toss one in a pan on the stove and simmer it. I live in a hot and humid climate, with slow traffic, so AC is always on and I run 180- 183 on the highway at 55, maybe a degree or two higher at 70. I got tired of seeing it go past 217, etc. I like my 180.
 
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