Author Topic: Installing vacuum advance on a 1950 Cadillac  (Read 333 times)

Offline jgreene

  • Posts: 66
Installing vacuum advance on a 1950 Cadillac
« on: September 11, 2020, 03:28:48 PM »
I am having a tough time getting my new vacuum advance installed on my distributor, which is all completely stock.  It has a hard line/tube connecting to the vacuum advance unit, which makes it very difficult to get the nut started on the advance.  Now I can't get the little tiny screws to start, which hold the advance to the side of the distributor.  If I remove the vacuum line to the advance and install the screws holding advance onto the distributor, I can't get the metal line to start into the advance unit.  I have tried bending the metal line, but can't seem to get it perfectly lined up.  Does anyone know of some old surefire trick to get all of this to line up.  I have not removed the distributor from the car to install the advance unit, because I know I will still have the same problem getting the metal advance line nut to start on the unit itself.
Thank you
Jim Greene
Jim Greene

Offline TJ Hopland

  • Posts: 10192
Re: Installing vacuum advance on a 1950 Cadillac
« Reply #1 on: September 11, 2020, 04:30:12 PM »
Can you loosen the advance line at the carb end or remove some clamps to get a little more movement in the line?

I don't know the layout of a 50 at all but can you mark the exact position of the distributor then loosen the clamp so at least you can rotate it and maybe improve the alignment to get things started?     If you have a timing light then you don't need an exact mark just something to get it close. 
StPaul/Mpls, MN USA

73 Eldo convert w/FiTech EFI
80 Eldo Diesel
90 CDV
And other assorted stuff I keep buying for some reason

Offline Jay Friedman

  • Posts: 2536
Re: Installing vacuum advance on a 1950 Cadillac
« Reply #2 on: September 11, 2020, 06:30:18 PM »
On my '49 with the same engine, I used to have the same problem.  I solved it by cutting the tube in two parts about 2 inches from the carburetor using a tube cutter.  Then I screwed the short piece back in the carburetor end.  You can then start the threads at the distributor end relatively easily.  I then joined the two pieces together with rubber tubing about 1½ inches long of the correct diameter.  There are no air leaks and it works perfectly. 

If you want the rubber tubing less visible you can cut the tube closer to the distributor.
1949 Cadillac 6107 Club Coupe
1932 Ford V8 Phaeton (restored, not a rod).  Sold
Decatur, Georgia
CLC # 3210, since 1984
"If it won't work, get a bigger hammer."

Offline TJ Hopland

  • Posts: 10192
Re: Installing vacuum advance on a 1950 Cadillac
« Reply #3 on: September 11, 2020, 07:38:27 PM »
I was gonna say that but figured I would get kicked out of the club.   I have done that more than one time with various hard lines that just don't want to play nice. 
StPaul/Mpls, MN USA

73 Eldo convert w/FiTech EFI
80 Eldo Diesel
90 CDV
And other assorted stuff I keep buying for some reason

 

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