[mistypotato]

Is that a Motorad "fail safe" thermostat?

No. Part No 2340-195 High Flow, but not fail safe.

 

[mistypotato]

I still wonder about the Motorad Superstats. The 192F has my interest. Both available on Rockauto.

View attachment 87403

The thermostat I removed was a MotorRad UltraStat 195F. I figured "Ultra" had to be better than just "Super"

Here's their Marketing jargon for the Ultrastat.....

The Motorad Ultastat Automotive Thermostat – a pinnacle of precision engineering for your vehicle’s optimal performance. Designed with cutting-edge technology and unwavering reliability, the Ultastat thermostat ensures precise temperature regulation, enhancing engine efficiency and longevity. Its advanced control mechanism swiftly adapts to changing conditions, promoting faster warm-ups and maintaining consistent operating temperatures.

Crafted to the highest industry standards, the Motorad Ultastat guarantees seamless integration into your vehicle, empowering you with the confidence to conquer the road ahead. Elevate your driving experience with the Motorad Ultastat – where innovation meets automotive excellence.

All I heard was "yada yada yada blah blah blah"

 

[mistypotato]

Everything is made a cheaply as possible. There is always a variance in accuracy of opening/closing temps. The thermostat is only a very small part of the restriction of the entire flow circuit of the cooling system. A larger thermostat opening is unlikely to make a difference in cooling capacity with a stock cooling system. A bigger/better rad is another story.

Ok......NOW you tell me!! Where were you BEFORE I placed the order and did all that work, superhero ??? (poking fun only)

 

[mistypotato]

Everything is made a cheaply as possible. There is always a variance in accuracy of opening/closing temps. The thermostat is only a very small part of the restriction of the entire flow circuit of the cooling system. A larger thermostat opening is unlikely to make a difference in cooling capacity with a stock cooling system. A bigger/better rad is another story.

I'm thinking about trying that Swansong (or whatever it's called) All Aluminum radiator.
But....as you say "everything is made as cheaply as possible". So who's to say it won't run hotter than a standard SpectraPremium radiator?
And will it last a year?
It claims to be 3 row and the only indications that could be true is that it is 1.6 inches thick (supposedly) and the inlet and outlet are on the same side, indicating triple pass?.

It might take $600 - $700 to get a really good quality all aluminum radiator?

 

[mistypotato]

If this "high flow" thermostat doesn't do any better after the system has been run a couple hundid miles, I'm putting the previous (MotoRad Ultrastat 195F) back in.
I did like the fact that that one let the engine reach 192F once on the freeway or cruising along at 60+ on 105F days.

I guess I could roll the dice and try a 180F UltraStat? (Yes, I realize it ain't gonna make much difference with the stock radiator)

I had ordered a Nissens 2 row radiator...but they sent me a 1 row, standard core radiator instead (grrrrr)...so I sent it back.

 

[mistypotato]

So after filling the radiator again (didn't take much) and another test drive, it does seem as if it's taking longer for the engine to heat up once stopped. which is a good thing.
I would actually be happy with this thermostat IF it didn't open apparently at 200F instead of 195F

 

[mistypotato]

Just for testing, I took another Motorad 2340-195 and pre tested it in a boiling pot of waterr.

It began to first open at 196F and was fully open by 205F
I'm thinking a 192F High Flow thermostat (Motorad 2040-192) might be ideal for those of us in hotter climates.
I just ordered a handful of them and will post the results soon.

 

[mistypotato]

Me personally, I would prefer the running at 200 over 192. It would be interesting if you saw any difference in fuel economy between the 2. In theory the higher the coolant temp the more the computer leans the mixture. I don’t know if 8 degrees makes a difference though.

Good question.
I wonder if there a table in the ECU that adjusts according to presets or if it just defaults to leaner at a set temp etc.
Seems like there would be quite a few variables that the ECU would use to adjust the mixture...altitude, coolant temp, ambient temp, load etc etc