1936 Series 40 Spark Plug Wrench

[Rock10]

Is there a special tool for taking out the plugs in the straight 8? I have an off brand 3/8 drive 7/8" deep well that works but it binds on the head from time to time and is barely deep enough to reach the bottom of the plug. Is there a go to thin wall socket?

Thanks

[pont35cpe]

Mine is a thin walled 1/2" drive 12pt socket 3 1/4" in length   "Herbrand DS28B 7/8 BUICK"   stamped on the side.  I`ve never seen another.

Edited August 9, 2021 by pont35cpe (see edit history)

[Wayne R]

Hi  Rock10,, most times we all buy good quality tools , but believe it or not i have also a cheap 

set of sockets , especially my favourite  for spark plug removals, it is about 1/16 inch less in  diameter,

and so clears  head and sides  better than my , higher priced  sockets.

[MCHinson]

I did not have a 7/8 thin wall socket that would work to remove the spark plugs from my 1937 Roadmaster. I could not find a thin wall socket that would work anywhere, so I recently purchased a set of deep well sockets that included a 7/8 socket at Harbor Freight tools for about $20.  I used an angle grinder to grind down the sides of the 7/8 socket enough to be able to use it to remove the plugs. It is not an elegant solution, but it worked for me. 

[MCHinson]

This might be a possible solution for you: https://www.ebay.com/itm/324048452105?hash=item4b72cafa09:g:1HQAAOSwN~VeJicb

[pont35cpe]

Outside Diameter of my Herbrand BUICK socket is 1.133"

Edited August 9, 2021 by pont35cpe (see edit history)

[Marty Roth]

4 hours ago, MCHinson said:

I did not have a 7/8 thin wall socket that would work to remove the spark plugs from my 1937 Roadmaster. I could not find a thin wall socket that would work anywhere, so I recently purchased a set of deep well sockets that included a 7/8 socket at Harbor Freight tools for about $20.  I used an angle grinder to grind down the sides of the 7/8 socket enough to be able to use it to remove the plugs. It is not an elegant solution, but it worked for me. 

 

When I bought my 1934 50 Series, the seller included a deep-well socket which he had previously ground down in a manner similar to what Matt described (above).

As Matt said, "not elegant", but it worked !

 

Good luck, and welcome !

[37Special]

For my 37. I found some 1\2 inch drive husky sockets at home depot that barely fit.  Gets the job done with no modifications. 

https://www.homedepot.com/p/Husky-1-2-in-Drive-Deep-SAE-Socket-Set-11-Piece-H2DDPSAE11PCSR/203559438

[Ben Bruce aka First Born]

I have never had a problem with Craftsman, although a 1939 is the oldest I have worked on.

 

  Ben

[MCHinson]

29 minutes ago, Ben Bruce aka First Born said:

I have never had a problem with Craftsman, although a 1939 is the oldest I have worked on.

 

  Ben

 

In 1938 they changed from the 18mm to 14mm spark plugs, solving the problem. 

[Rock10]

2 minutes ago, MCHinson said:

 

In 1938 they changed from the 18mm to 14mm spark plugs, solving the problem. 

Yes. I was surprised when my normal "old" spark plug socket (13/16) would not work. Most of my 7/8 were too thick to go into the hole.