Thin walled spark plug socket OD?

[s3steve]

Another spark plug question. What is the OD of the thin wall spark plug socket. I'll be turning down a regular 5/8" spark plug socket tomorrow at work. If anybody has done this what OD works without being too thin. I tried to measure the ID but can't get my caliper in there with the plug in the way.

 

Thanks again guys!

[Skywagon]

Not sure but if you have a Harbor Freight near you, you can buy this for $8.00 and it works... It's the long skinny one.

 

http://www.harborfreight.com/catalogsearch/result?q=spark+plug+socket

[99Roadster]

Kobalt from Home Depot has a thin-walled socket as well.

[Satguy]

The OEM service tool # 12 3 510 is 20.5MM OD (.808")

 

I have never used a turned down socket, but the OEM tool has a very thin wall.

 

Good Luck

 

[dirtrider]

Morning Steve

 

I have a socket I turned down to .850” and that j-u-s-t fits both my 1200 hexheads. It’s tight on one side of one engine so maybe just slightly smaller to be sure it fits yours.

 

If I remember correctly the spark plugs are .692”-.694” across the peaks so that should leave enough meat to not split.

 

 

 

[s3steve]

Thanks guys!

 

The one I have is .855" from Canadian Tire so if I take .020" off that should work fine.