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No 190 but the local Cummins shop stocks 180 and 200. Part number on the 180 is 5292708.
I have dealt with the guy there quite a bit and he is pretty knowledgeable. He warned me that some 5.9 head castings will have clearance issues because the body of the 6.7 thermostats are larger.
 

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Discussion Starter #22
He might be referring to an older head??? the stat we use works all the way back into the 90's IIRC, 58mm flange size.

The question that comes to my mind is if the blockoff port is not sealed off then flow continues thru it and back to the radiator... how is that going to affect head coolant temps?
 

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Discussion Starter #24
That 200 deg stat has a larger bleed hole also I see.
Yeah that hole proved to be too big, went with one half that size on the next stat. It took forever to get up to temp. Which is another point of consideration... 1/16" was a better drill bit size to use.
 

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He might be referring to an older head??? the stat we use works all the way back into the 90's IIRC, 58mm flange size.

The question that comes to my mind is if the blockoff port is not sealed off then flow continues thru it and back to the radiator... how is that going to affect head coolant temps?
The flange size is the same, he was referring to the width of the metal frame and touching the casting beneath the flange. Also the recirculation port should be covered with the 6.7 thermostat.
IMG_20190912_102339_1568317075556.jpg
 

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There was a Cummins Bulletin on thermostat interference on some 5.9 heads when they had one of their many upgrades. Covered where to grind a bit of metal off. Guess it would be buried in the 1st Gen section.
Cheers Steve
 

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I ran the truck empty after putting the large 180 stat in. It was cycling a bit on me but smoothed out after a few minutes. Slowed down for a corner then got on it hard and it had a few more cycles before it leveled out again. Take this with a grain of salt because it is my first drive with my new Griffin radiator too so there have been major changes to my cooling system. I will update when I tow something with it to see how overall cooling does.
 

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Discussion Starter #29
I ran the truck empty after putting the large 180 stat in. It was cycling a bit on me but smoothed out after a few minutes. Slowed down for a corner then got on it hard and it had a few more cycles before it leveled out again. Take this with a grain of salt because it is my first drive with my new Griffin radiator too so there have been major changes to my cooling system. I will update when I tow something with it to see how overall cooling does.
What do you mean "Large 180 stat"?

New radiator, can you share pics of it?

E-fans or OEM mechanical still?
 

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The Cummins part number 5292708 is a 180 degree that is dimensionally the same as the 200 degree 5292724 discussed earlier in the thread.

Still the factory fan and converted to the mechanical fan clutch.

I ended up cutting the rubber spacers at the top of the radiator to get more clearance for the fan. The top was really close to the fan. After cutting the rubber spacers down the top was barely closer than the bottom. IMG_20190910_131939_1568387997168.jpg IMG_20190910_131932_1568388138161.jpg IMG_20190912_102154_1568388264974.jpg
 

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Discussion Starter #31
wow that core looks pretty thick, I think that might be a tight fit for my setup with the fluidampr on there. AFE is coming out with their version of an aluminum radiator, 3 row core for around $550, considering going that route with a new shroud & electric pump.
 

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I noticed that on mine also the top of the radiator leans back more than I remembered. I wonder why they did that? No worries, still a ton of extra room for hands and arms to get in there.

Maybe it has something to do with mounting their electric fans and shroud, but I don't get it.:confused013:
 

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I thought about mounting my new water pump to the radiator before I filled it for the first time. Meziere sells an adaptor that you weld on to the lower corner of the Rad, and then the pump mounts to it, so you could bypass the lower hose position and pull from the bottom of the Rad. I still might do it, but I invested in some of that "water wetter" to protect the inside of the core, and to aid cooling, so maybe when I change and flush the core I will do that mod as well.
 

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before messing with water wetter...if your fans are not divided between them on the radiator side, add it, that should be your first change. If they are divided, then maybe your fans are not pulling enough air across the core.
 

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wow that core looks pretty thick, I think that might be a tight fit for my setup with the fluidampr on there. AFE is coming out with their version of an aluminum radiator, 3 row core for around $550, considering going that route with a new shroud & electric pump.
Both this one and my stock one are 2 row but you can see the thickness of each row is drastically more with this Griffin.

I don't know how thick your setup is but I have a fluidampr as well and still fit the monster stock fan in there.
 

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I noticed that on mine also the top of the radiator leans back more than I remembered. I wonder why they did that? No worries, still a ton of extra room for hands and arms to get in there.

Maybe it has something to do with mounting their electric fans and shroud, but I don't get it.
Probably not a big deal if you are mounting electric fans but my mechanical was too close. Cutting the spacers down gave me at least another half inch. I was planning on adding some of this info to the radiator thread you started.
IMG_20190911_191752_1568406433888.jpg
 

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I thought about mounting my new water pump to the radiator before I filled it for the first time. Meziere sells an adaptor that you weld on to the lower corner of the Rad, and then the pump mounts to it, so you could bypass the lower hose position and pull from the bottom of the Rad. I still might do it, but I invested in some of that "water wetter" to protect the inside of the core, and to aid cooling, so maybe when I change and flush the core I will do that mod as well.
Did you go with the diesel water wetter? Not sure what the difference is but I did see that they have the diesel specific stuff.
 
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