grea235

Ford Borg Warner Overdrive Parts Prices (vanpeltsales.com) has them. A9AZ-7A651A. I believe the Ford and Studebaker used the same switch. https://www.fifthaveinternetgarage.com/ has them too. #05415KDS

#3 is a front valance/stone guard isn't it? The front lip goes into the back of the bumper.

I appreciate this info. I'm planning on doing this soon.

If you are talking about a D6H2 with a Sisson, I have one and took a picture of the choke lever side. The choke moves in the same direction, but it looks like the choke rod from the Sisson would need to be able to adapt to the UN2. Maye graft the Sisson rod to the UN2 rod? The stock air cleaner wouldn't fit.

That's good. I'm glad it's working for you. Been driving mine with the duals and it's been running great.

I pondered how they preset it and to what flow. They are running fine so far. It's not loading up on gas or starving or hesitating, starts fine when it's hot. I'm going to pull the plugs, clean them off, then recheck them after it's been run for awhile to see if it's lean or rich. If either, I'll adjust the mains.

Update - I put the UN2 carbs on and got the linkage sorted. I left the adjustable main jets alone; the instructions said they were preset. Tweaked the air mixtures with a vacuum gauge and synched them up with a Unisyn. It runs very well, idles nice and part throttle is great. Way more driveable. Starts up easily. I do have a return spring on the linkage. I'm adjusting it to get the least pressure on the pedal and ensure the carbs return. I don't know how functioning dual ball on balls run; mine were cobbled together from 6 different carbs and I got tired of fiddling wirh them. I am very happy with the new UN2's.

If it helps anyone, here's pics of the UN2 throttle lever. Closed and open in two different dimple positions. I had to use the 2nd dimple position otherwise it hit my dual throttle linkage bar when it goes full open. Between the two holes would have been perfect. 1st position closed 1st position open 2nd position closed 2nd position open

I used a square to measure my old D6A2 and then the UN2. I tried to keep it on the same plane as the center of the barrel. The pictures don't quite show it well, but I have the differences. This is the D6A2, obviously. This is the UN2 Relative to the base, the location of the choke holder on the UN2 is 3/4 inches shorter and 3/8 inches inboard, so your cable will need to be 3/8 inches longer. The throw of the choke lever itself is about 1/8 farther inboard and has a lot shorter throw. The whole carburetor is 3/4 inch shorter. The base flange is about 1/8 inch thicker. My car came with a rusted up Sisson choke and a D6H2, so when I replaced it with the D6A2, I had to get an aftermarket choke cable, which by the way, fit too loose in the holder, so I had to put a copper tube sleeve on it to make it fit tight. I don't know the diameter of an original choke cable, so I don't know if you will run into that issue. I can get pictures of the throttle lever positions if you want.

I live about 30 minutes north of Mike's Carburetor. I went down yesterday and bought two. I have a dual offenhauser manifold. They fit ok, same fuel line fitting, same air filter input size as a D6A2, which is what I am replacing. Throttles spring closed, not open. Biggest thing so far is the clockable throttle lever is either straight up and you don't get enough throw, or leaned back toward the fender. I need to extend my throttle linkage. I'll post a new thread when I get them sorted out and fired up.

I don't know if this would help, but I recently had an issue with one of my D6A2's. The throttle was intermitently sticking. I have it on the long throw setting and the lower flat part of the accelerator pump was rubbing against the hole in the bottom of the body. When it is set at the short throw hole it was fine because the angle is narrower. I looked at a couple of my old bodies and I could see rubbing as well. I think the slot for the accelerator pump wears out. I dremmeled the place where it hit the body and it's better. Been contemplating the UN2's myself, but I need two.

No problem!

You are very welcome.

Unfortunately, I didn't install a kickdown switch yet. I have one wired in, but it is not on the throttle linkage, so I can't help with that piece.

Sorry for the delay. If no one has gotten back to you, I took pictures of mine. It's an R10. The first picture is the bracket that bolts under the solenoid. Sorry for the upside down picture. The second shows the lever locked in, the third shows it locked out. I hope this helps.