Jim Shepard Posted June 25, 2012 Report Share Posted June 25, 2012 First of all, thanks to Kevin for the "new" head. Talked with him at length this morning and only wished he lived closer. Nice guy! Anyway, the head he gave me had a thermo housing on it and, after dropping the head off at my machinest's, I went by the local Napa to pick up a new thermostat. I knew the housing on Kevin's head looked a little different than mine, but I didn't realize just how different they were until I got home. Not only do they look a little different outside, they are completely different on the inside and the way in which the coolant circulates around inside. Now I'm wondering the history on these. I had always assumed my housing was original to the truck (a B2B) or, at least, the original kind. Now I'm not sure. Check out the photos. The first one shows the thermo and housing Kevin gave me (L) and my original thermo and housing ®. You can see (I hope) that the "inards" are different. The coolant is by-passed differently. Also, the thermostats themselves are quite different. In the second photo its pretty apparent that the radiator hose comes in at a different angle. I'm thinking maybe the black housing came off a car as maybe the radiator sits a little lower. What do you guys think? Quote Link to comment Share on other sites More sharing options...
48Dodger Posted June 26, 2012 Report Share Posted June 26, 2012 Hey Jim, this is what I got....48 1/2 ton....49 1.5 ton....50 1/2 ton 48D Quote Link to comment Share on other sites More sharing options...
Jim Shepard Posted June 26, 2012 Author Report Share Posted June 26, 2012 They all look like mine. I looked again at the factory manual and I think mine's original, as is the thermostat. I have no idea what Kevin's came from... Quote Link to comment Share on other sites More sharing options...
48Dodger Posted June 26, 2012 Report Share Posted June 26, 2012 Maybe its off of "Powerflow 6" 54-59......? 48D Quote Link to comment Share on other sites More sharing options...
MBF Posted June 26, 2012 Report Share Posted June 26, 2012 I've got a Worthington "Golf Chief" tractor that has that setup. It also had a similar plenum on the intake manifold under the carb. I'm wondering if this setup is for stationary or industrial applications. I needed a new manifold setup so I put the one from the Worthington on my '52. It seems to pull better which is probably due to the increased intake manifold volume. Mike Quote Link to comment Share on other sites More sharing options...
Merle Coggins Posted June 26, 2012 Report Share Posted June 26, 2012 I believe the thermostat on the left is incorrect for that style housing. They should both have a thermostat like the one on the right. I believe the housing on the left is just a low profile version of the one on the right. To use the thermostat on the left you need the newer internal bypass head, block, and thermostat housing as seen here. Quote Link to comment Share on other sites More sharing options...
Young Ed Posted June 26, 2012 Report Share Posted June 26, 2012 You can buy a replacement for that tall thermostat at napa. It looks like this Quote Link to comment Share on other sites More sharing options...
Jim Shepard Posted June 27, 2012 Author Report Share Posted June 27, 2012 You can buy a replacement for that tall thermostat at napa. It looks like this Ed, do you have a Napa stock number? Jim Quote Link to comment Share on other sites More sharing options...
TodFitch Posted June 27, 2012 Report Share Posted June 27, 2012 Ed, do you have a Napa stock number?Jim See http://www.ply33.com/Parts/group7#7-41-04 I think you are looking for Chrysler part 867040 which crosses to NAPA THM 55 Quote Link to comment Share on other sites More sharing options...
Young Ed Posted June 27, 2012 Report Share Posted June 27, 2012 See http://www.ply33.com/Parts/group7#7-41-04 I think you are looking for Chrysler part 867040 which crosses to NAPA THM 55 I think thats the 180° and a 160° is a thm155 but thats just off the top of my head. Anyway that style is available in both temperatures. Quote Link to comment Share on other sites More sharing options...
Jim Shepard Posted June 28, 2012 Author Report Share Posted June 28, 2012 Thanks guys. I'll head to Napa... Quote Link to comment Share on other sites More sharing options...
dutchmeister Posted June 29, 2012 Report Share Posted June 29, 2012 (edited) Looked up part #1116777 which is clear on the one on the right. It was used on models B1B, B1C, and B1D. (1948 1/2, 3/4, and 1 ton.) It was also used on models B2B, B2C up to engine # T172-100902. Continued through all engine #s for B2D Harold Edited June 29, 2012 by dutchmeister Quote Link to comment Share on other sites More sharing options...
HanksB3B Posted June 29, 2012 Report Share Posted June 29, 2012 (edited) My engine is number T172*80885 on my 51 B3B. I think when my friend Slick and I were rebuilding our trucks (the first time around in 1980) Slick must have advised me to have the engine out of Clarissa our parts truck. I think it must have been a 1950 truck I also got running boards and fenders from the parts truck. I guess that also explains why I have shortened rear fenders. I also have the thermostat housing on the right, but I'm pretty sure I am using a thermostat I got from NAPA that looks like the aftermarket one on the left. I do have a couple of original used ones and should really give them a chance because occasionally the NAPA one will get stuck, my temperature jump up almost to 212 and then it must get unstuck and the needle starts moving down. It hasn't done that in a long time, but as far as engines overheating I don't like suprises. So another thing goes on "the list". It is always something, Hank Edited June 29, 2012 by HanksB3B Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted June 29, 2012 Report Share Posted June 29, 2012 The pictures in this album might or might not help. Follow the link for more. http://smg.photobucket.com/albums/v65/DonCoatney/Radiator/thermostat/?start=all Quote Link to comment Share on other sites More sharing options...
Jim Shepard Posted June 30, 2012 Author Report Share Posted June 30, 2012 (edited) I just ordered a THM155 from Napa. It looks like its a 2-part thermo. In other words, it comes apart. I've also ordered the one that appears to be the part thats silver (the one on the left in my original post). The THM155 appears to be that part plus the copper-colored piece. None of them look like my "original." Edited June 30, 2012 by Jim Shepard Quote Link to comment Share on other sites More sharing options...
Young Ed Posted June 30, 2012 Report Share Posted June 30, 2012 None of them look like your original but the napa one is intended to replace it. Basically a modern thermostat with adaptors to make it work. Quote Link to comment Share on other sites More sharing options...
B1B Keven Posted July 1, 2012 Report Share Posted July 1, 2012 Great meeting/talking with ya Jim! I just need to get ya some pics of that WC huh! Quote Link to comment Share on other sites More sharing options...
Jim Shepard Posted July 1, 2012 Author Report Share Posted July 1, 2012 I just need to get ya some pics of that WC huh! And the Suburban... Quote Link to comment Share on other sites More sharing options...
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