Harmonic Damper Bolt 1933 201

[Mopar-Boy]

I have a 1933 Dodge DP6 sedan with a 201.  The damper and pulley are all one large unit.  Wanting to pull it so I can replace the front seal and timing cover gasket.  The bolt has machining on the top to allow what is probably an enormous flat blade tool to install it (just as reference point).  Does anyone know what size bolt, or more specifically what size socket I will need to remove it?

[Sniper]

That machining is for the hand crank.

 

Can't help on the socket size though.

[Sam Buchanan]

text deleted

Edited November 11, 2023 by Sam Buchanan

[Los_Control]

I will be out later working on my 49 218 ..... no idea if they would be the same as a 33 201.

 

I do remember it awkward to measure because of the deep pulley and the small space. I do remember I found a socket to fit it though.

I bought a tool box at a estate sale years ago, it had a set of 3/4" drive sockets in it .... thats how I happen to have the tool for it.

 

Just thinking you might make a treasure hunt out of it ... go search a few pawn shops for a used 3/4" socket set .... maybe harbor freight has a cheap set?

Just not something you will use very often but handy to have when you need it. ... Times like this.

You can get a 1/2" > 3/4" adapter so you can use your 1/2" ratchet with it.

 

I'm thinking if you go to the local parts store and buy a decent 1.5" socket, you may get a complete set used for about the same price.

[Doug&Deb]

I’m not sure if this will help but 50’s Dodge engines use a 1 11/16 socket which isn’t easy to find. I got mine from either Rural King or Tractor Supply. 

[Los_Control]

I checked mine, seems like a 1 13/16 socket fits. I have no idea what a 33 Dodge uses ..... or if it is the same nut the engine was born with.

 

I never did report back ..... Wrong information can be harmful. My engine is a 1950 and 1-13/16 .... @Doug&Deb says 1-11/16"  .... Ours are different.

Just not sure about quality control back in those days, even tougher to guess what was available 10 years earlier.

[andyd]

The 1941 Plymouth I had needed a 1 & 13/16th 3/4" drive socket to fit the crank bolt...I bought one socket specially for it & also a 3/4" to 1/2" socket adaptor as I only have 1/2" drive sockets.........I also used a block of wood wedged between the pulley and the frame to undo the nut......and then wedged the block of wood on the other side of the pulley and frame when I had to tighten the bolt..........worked fine both ways...........and whilst I ended up selling the car I still have  both the large socket and adaptor piece.........just in case..........lol........andyd  

[Mopar-Boy]

It is definitely 1 13/16.  Thanks all!  Need to make sure that the overall diameter of the socket is not too big or it won't go deep enough into the damper to get a good bite.  

[Art Bailey]

Here's what I got, 18 bucks from Amazon: https://www.amazon.com/gp/product/B081PN3C1D/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

 

There was no way a socket plus wrench was going to fit in that tiny space between the rad support thing and the damper on my '48, and I didn't have a 3/4" drive wrench anyway. So, I hacked off the end of the socket to the bare minimum and welded on a hunk of 1/4" flat stock for a handle. My damper and pulley are two seperate pieces, and there's a ring of six hex head bolts around the big crankshaft nut, the socket is a tight fit. 

Edited November 21, 2023 by ratbailey