hi_volt

Nice looking car! Looks pretty solid. Keep us posted on your progress, and pix are always appreciated. 😊

Confirmed by supplier. Threads are indeed 1/2-20 and the brass ferrule is needed. Thanks for everyone's inputs.

Update. I went to my local O'Reilly Auto parts store and bought one each of the Dorman 785-402D (1/2-20 threads) and the 785-414D (1/4 NPT threads) fuel hose adapters. The 1/4 NPT thread diameter is too large to screw into the fuel outlet on the new tank. The 1/2-20 threads do fit and I can hand tighten the adapter most of the way down without too much effort. I also noted that the female end of the rubber fuel hose that goes between the steel fuel line exiting under the radiator and the mechanical fuel pump also has 1/2-20 threads, so it makes sense to me that both sides of the steel fuel line would likely have the same male connector threads. If I hear back from the seller, I'll post his response to my inquiry.

I have a new gas tank for my 47 Plymouth that I bought from Mopar Pro and am planning on using a hose barb adapter at the fuel outlet in conjunction with flexible hose to connect to the steel fuel line. I'm trying to determine what thread pitch the fuel outlet is on the new tank. I found two threads on the forum that discuss the Mopar Pro tank threads. One thread says to use a 1/2-20 straight thread barb adapter (like a Dorman 785-402D) and the other one says to use a 1/4 NPT tapered thread barb adapter (like a Dorman 785-414D). Does anyone else have experience with this tank and can offer their input? Thanks! Gas tank outlet barb fitting - P15-D24 Forum - P15-D24.com and Pilot-house.com 5/16" fuel line addapter 1/2"x20 - P15-D24 Forum - P15-D24.com and Pilot-house.com

That Airflow is a magnificent car! I've always loved how these cars looked, and they were way ahead of their time.

Thanks everyone. It turns out that the male fittings I needed are 3/16" tube nuts for inverted flare tubing, with a thread pitch of 3/8-24. I bought some pre-made copper nickel brake lines with these fittings and they work perfectly.

I've looked through a number of the threads here but so far haven't found a definitive answer. I'm trying to determine the thread pitch of the female receptacles on the carburetor and the vacuum advance canister on the distributor so that I can add fittings to accommodate a flexible vacuum hose. The distributor is an Autolite IAT-4101 and the carburetor is a Carter ball and ball DTC1. Any help would be appreciated. 🙂

If you look closely at the ends of the wire next to the lugs, you'll see that it was originally covered with cloth insulation that has since worn away, so it looks like it was intended to be insulated.

Wow! Definitely some serious eye candy. Well done!

A bit pricy, but solves the problem... 6 volt Optima Battery Cloaking Device looks like an original 6V PORSCHE 356 B T6 | eBay

Currently my ratio is 6:1. In order of increasing model year: 1947 Plymouth Business Coupe, 1958 BMW Isetta, 1961 VW Camper, 1971 VW Bus, 1976 VW Beetle, 2013 Fiat 500 Abarth. I'm a bit crazy.......

Looks pretty straight. Listed on Phoenix Craigslist. 1948 Dodge B1B for sale by owner - Mesa, AZ - craigslist

Very nice car. Welcome to the forums. Hard to believe your car was as dirty as you described based on your posted photos. Nice job cleaning it up. I'm into vintage electronics as well and was an electronic engineer before I retired last December. Your radio will likely need a re-cap and might also have some out of tolerance resistors. I'm sure you're familiar with the routine. I'm more familiar with the '46-'48 Plymouths than the later models. If your parking brake is the same as the ones for the P15 models, it clamps around the drive shaft just behind the transmission with shoes similar to your drum brakes. Another thing to note is that Mopar cars of the era, at least through 1948, used left hand threads on the passenger side wheel lugs. You'll need to check for your year to see if that's still the case. I would take a closer look at your carburetor and fix the weeping. Depending on where the weep is located, it might be due to a stuck float or bad gaskets, and if there's a vacuum leak it could cause the engine to run too lean. Keep us updated on your progress.

Pretty straight looking Chrysler sedan. Not sure why the seller has it listed as a Plymouth. Looks like it might have been used by the US Army at one time. Buried in the Phoenix CL "Auto Parts" section. 1947 Plymouth 4 door - auto parts - by owner - vehicle automotive sale - craigslist

+1 on the color. I really like the purple. A very nice example.