rawbbayce Posted April 25, 2018 Share Posted April 25, 2018 Does anyone know where I can get a temperature gauge reducer for a 1949 Plymouth Special Deluxe? It screws into the head of the engine and the temp bulb screws into the reducer. Its also known as radameter gland nut- mopart part #50291 Any help would be greatly appreciated. Link to comment Share on other sites More sharing options...
ply33 Posted April 25, 2018 Share Posted April 25, 2018 There is typically an assortment of the gland nuts in the package for an aftermarket "bubble pack" universal "mechanical" temperature gauges that you can get at your local auto supply. Last time I needed one for my Plymouth that is where I got it. I will admit that I was also buying it for the bulb and capillary which I grafted onto my original dash unit to restore it to functionality. If you find an old style auto supply store that has been around a while, the one with the paper catalogs and reference materials in racks on the counter, they may have the correct gland nut on the shelf in the back. In which case you need not buy the whole aftermarket temperature gauge just for one fitting. 1 Link to comment Share on other sites More sharing options...
Curti Posted April 25, 2018 Share Posted April 25, 2018 The reducer isn't difficult to make. Any machine shop can do it. The tough ones are the reducer with a takeoff for the heater hose. 1 Link to comment Share on other sites More sharing options...
rawbbayce Posted April 26, 2018 Author Share Posted April 26, 2018 Thanks guys. I did check those temp gauge packs at advanced auto. They all look too small. I never thought about having someone make one. I talked to hidden valley salvage. He thinks he has one. Fingers crossed. If he doesn't having one made might be my only option. Link to comment Share on other sites More sharing options...
JACK M Posted April 26, 2018 Share Posted April 26, 2018 48 Chrysler. Same? I might be able to get it out with out hurting it. 1 Link to comment Share on other sites More sharing options...
ply33 Posted April 26, 2018 Share Posted April 26, 2018 21 minutes ago, JACK M said: 48 Chrysler. Same? I might be able to get it out with out hurting it. Likely the same. That fitting was used on Plymouth from '31 through at least the '49 mentioned in the original post (my parts books are for Plymouth only and stop at '48). Give Chrysler's centralized engineering/design staff, that type of thing is usually common across all Mopar brands. Link to comment Share on other sites More sharing options...
rawbbayce Posted April 26, 2018 Author Share Posted April 26, 2018 Yes!!!!! That's it. I did confirm that that part was used in 31 through at least 55. If you can get it out, let me know what you want for it. Link to comment Share on other sites More sharing options...
rawbbayce Posted April 26, 2018 Author Share Posted April 26, 2018 2 hours ago, JACK M said: 48 Chrysler. Same? I might be able to get it out with out hurting it. 2 hours ago, JACK M said: 48 Chrysler. Same? I might be able to get it out with out hurting it. Yes!!!!! That's it. I did confirm that that part was used in 31 through at least 55. If you can get it out, let me know what you want for it. Link to comment Share on other sites More sharing options...
Silverdome Posted April 26, 2018 Share Posted April 26, 2018 I would think you could get that gland nut at a hardware store. Link to comment Share on other sites More sharing options...
ply33 Posted April 26, 2018 Share Posted April 26, 2018 1 hour ago, Silverdome said: I would think you could get that gland nut at a hardware store. The inside of it has a seat that a flange on the bulb is pressed against to seal. So a straight reducer won't work. 1 Link to comment Share on other sites More sharing options...
Silverdome Posted April 26, 2018 Share Posted April 26, 2018 Isn't it the same as a brake line fitting? Link to comment Share on other sites More sharing options...
ply33 Posted April 26, 2018 Share Posted April 26, 2018 43 minutes ago, Silverdome said: Isn't it the same as a brake line fitting? I don't think I've ever seen a brake line fitting that match that adaptor/seat for the temperature sensing bulb. 1 Link to comment Share on other sites More sharing options...
JACK M Posted April 27, 2018 Share Posted April 27, 2018 20 hours ago, rawbbayce said: Yes!!!!! That's it. I did confirm that that part was used in 31 through at least 55. If you can get it out, let me know what you want for it. I will try and get it out today, Tune in around this time tomorrow. 2 Link to comment Share on other sites More sharing options...
JACK M Posted April 28, 2018 Share Posted April 28, 2018 I didn't try to knock it apart. Probably been on there since 1948 or so. 1 Link to comment Share on other sites More sharing options...
rawbbayce Posted April 28, 2018 Author Share Posted April 28, 2018 13 hours ago, JACK M said: I didn't try to knock it apart. Probably been on there since 1948 or so. The inner threads look good. I'll give it a try. What do you want for it? Link to comment Share on other sites More sharing options...
mopar scott Posted April 29, 2018 Share Posted April 29, 2018 (edited) I have a few new old stock ones if you need one. Send me a message or text me seven zero seven eight eight eight five zero one two. Scott Edited April 29, 2018 by mopar scott Forgot to post pictures (see edit history) 1 Link to comment Share on other sites More sharing options...
knobless Posted April 29, 2018 Share Posted April 29, 2018 Plumbing supply Link to comment Share on other sites More sharing options...
rawbbayce Posted April 30, 2018 Author Share Posted April 30, 2018 On 4/29/2018 at 12:11 AM, mopar scott said: I have a few new old stock ones if you need one. Send me a message or text me seven zero seven eight eight eight five zero one two. Scott Thanks, but I'm good now. Link to comment Share on other sites More sharing options...
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