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Old 01-21-2018, 10:04 AM   #1
Blastfromthepast
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Default 1936 Columbia rear

I'm having a problem identifying this type rear. I found one and was told that it's for 1936. I read that the Columbia unit is on the left side of the rear but the one I located is on the right side of the rear. I'm confused. Need help with this question. How can I really know if it for a 1936. Also if it is how can I tell the size gears in it. Helpppppp!!!!
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Old 01-21-2018, 10:42 AM   #2
deuce lover
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Default Re: 1936 Columbia rear

Post pics of what you have.Don't know where you read that but Columbia's are all on the right side.35-36 radius rods are attached a bracket on the banjo housings close to the flange for the brake backing plate, after that ('37) they attached to the flange at the backing plate end of the housings.Most gearsets were 4.11 for Banjo's.On the web of the banjo underside near where the torque tube flange are some numbers that should be stamped .That should tell you the gear ratio.
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Old 01-21-2018, 11:35 AM   #3
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Default Re: 1936 Columbia rear

From 1942 thru 1948 they are wider by an inch and a half or so. If the tag is still on it, it should have the last two digits of the year with a prefix F for Ford, M for Mercury, or LZ for Lincoln. Parts can be mixed & matched though so there is no guarantee even with a tag. The 35 & 36 should have the bone mountings that were mentioned previously plus mechanical brakes. The 33 & 34 are very rare and the 35 & 36 are not common either. The 37 thru 41 are more common but the 42 thru 48 are the most common and are the wide ones. The wide ones will work on an older car but the wheels will stick out from the body a bit more. Some folks modify the wide ones to work on the earlier axles but it takes someone with a jig and some experience to get it right. Bullet proofing one is a good idea. Some of the parts are weak and should be reinforced before they crack. The Columbia mod can get expensive but they are really nice on a period correct car. http://www.columbiatwospeedparts.com...r-columbia.cfm
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Old 01-22-2018, 08:37 PM   #4
PeterC
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Default Re: 1936 Columbia rear

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Originally Posted by Blastfromthepast View Post
I'm having a problem identifying this type rear. I found one and was told that it's for 1936. I read that the Columbia unit is on the left side of the rear but the one I located is on the right side of the rear. I'm confused. Need help with this question. How can I really know if it for a 1936. Also if it is how can I tell the size gears in it. Helpppppp!!!!
My 35 3 Window Coupe has a cast iron Columbia housing which was prior to the later stamped steel units - as per the picture - it is on the right (read passenger) side of the differential. The ring/pinion set up is 4:11 to 1 with the high setting bringing that to 2:97 to 1.
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Old 01-22-2018, 11:00 PM   #5
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Default Re: 1936 Columbia rear

Peter that's on good looking Columbia rear. Nice job
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Old 07-06-2018, 04:18 PM   #6
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Default Re: 1936 Columbia rear

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Old 07-06-2018, 06:04 PM   #7
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Default Re: 1936 Columbia rear

This Columbia came from a 35-36.Some one added the shock mounts.
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Old 07-06-2018, 07:50 PM   #8
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Default Re: 1936 Columbia rear

My Columbia has a 3.78 gear and works fine on my 35
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Old 07-06-2018, 08:11 PM   #9
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Default Re: 1936 Columbia rear

I have a 3.54 in my '36. It runs 3000 rpm at 60 mpg. I am thinking of putting a Columbia in it so it is more road worthy but everyone says I need a 4.11 in it. That just sounds like I am defeating the purpose. If I do go with a Columbia and my 3.54, will I be lugging the engine?
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Old 07-06-2018, 08:48 PM   #10
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Default Re: 1936 Columbia rear

With 3.54s you should be running close to 70 mph at 3000 rpm, with stock 600-16s.

Last edited by cvstl; 07-06-2018 at 10:01 PM. Reason: Spelling
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Old 07-06-2018, 10:22 PM   #11
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Default Re: 1936 Columbia rear

'36 Columbia axle.
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Old 07-06-2018, 10:33 PM   #12
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Default Re: 1936 Columbia rear

Mph X 336.1524 X final drive ratio ÷ tire diameter = RPM
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Old 07-07-2018, 09:14 AM   #13
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Default Re: 1936 Columbia rear

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Originally Posted by Steve Kennedy View Post
I have a 3.54 in my '36. It runs 3000 rpm at 60 mpg. I am thinking of putting a Columbia in it so it is more road worthy but everyone says I need a 4.11 in it. That just sounds like I am defeating the purpose. If I do go with a Columbia and my 3.54, will I be lugging the engine?


With those figures, this doesn't seem to represent a 3.54:1 ratio at all. It seems more representative of a 4.11:1 ratio. A 3.78:1 should do better than those figures unless the car has smaller diameter rear tires. I'd wonder about speedometer accuracy or whether it actually even has that ratio.
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Old 07-07-2018, 09:48 AM   #14
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Default Re: 1936 Columbia rear

This may help.
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