Original Model A spark plugs

[FrankWest]

What is the size wrench needed to remove original model A spark plugs.
Ford issued wrenches. Some have hex on one end and open wrench on other. Is the hex or open size used to remove the spark plugs.....? I would guess open????

 

[mshmodela]

Got mine from Sears hardware:

 

[FrankWest]

is it 15/16 there is glare in the photo.
Thanks

 

[BashawT]

is it 15/16 there is glare in the photo.
Thanks

Yes

 

[Bob C]

It would be best to measure the plugs you have as not all plugs are the same size.

Bob

 

[FrankWest]

It would be best to measure the plugs you have as not all plugs are the same size.

Bob

In general does most deep socket sets work, as far as clearing the depth of the plug?

 

[FrankWest]

All model A's left the factory with Champion 3X spark plugs that used a 1- 1/8" wrench. The Ford supplied wrench had a large 1-1/8" open end that fit the spark plug, the small 11/16" box end fit the head nuts and was used to keep the head tight.
A 1-1/8" deep socked works on 3X spark plugs.

Some modern plugs use different size wrenches.

Great picture! Thanks for taking the time to help! Greatly appreciated.
The wrench I have is for model B 4 cylinder engine. The size wrench I have is the same as the one you mentioned.

 

[mshmodela]

yeah, 15/16" it's a very deep well socket, which can take at very large W16Y Champion Plugs

http://www.snydersantiqueauto.com/3797

 

[Patrick L.]

Hmm, a cresent/adjustable wrench fits just fine too.

 

[glenn in camino]

If they're original or repo 3xs they're 1-1/8". Don't know about other types.

 

[MikeK]

I always use box wrenches for Model A plugs, 3X or any other size. Less danger of busting the porcelain or hickying the hex corners, at least to me.