The Ford Barn

M2M · 04-07-2019, 09:56 AM

jw hash · 04-07-2019, 10:17 AM

it is not original, but it looks to be correct for the Model A,

JBill · 04-07-2019, 10:30 AM

How about a picture where we can see the label?

Purdy Swoft · 04-07-2019, 10:56 AM

It looks like it would protrude pretty far into the combustion chamber . While it would fit a model A head , my guess is model T spark plug .

Joe K · 04-07-2019, 11:53 AM

IIRC, Model T plugs have pipe thread?

Joe K

Purdy Swoft · 04-07-2019, 12:16 PM

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I've never owned a model T and didn't know that model T spark plugs had pipe threads .

Railcarmover · 04-07-2019, 12:32 PM

Tiger plug...

ursus · 04-07-2019, 01:07 PM

Numerous manufacturers made plugs for the Model A. Some were private label plugs for retailers like Sears, Wards, Gamble's, etc.

M2M · 04-07-2019, 01:50 PM

Firstly, it's important to remember that 7/8" plugs pre-date the Model A, there were available during the Brass Car era. My understanding is that the 7/8" plugs came in three lengths...regular, long and extra long. The one in the photo at the top I think might be the "long".

This I think is "regular":

This I think is "extra long" :

Early Model Ts received 1/2" pipe "regular" size plugs, then changed to 1/2" pipe "long" size plugs once the lower compression "high" heads started being fitted.

What length 7/8" plugs were factory fitted to the Model A? Do both "regular" and "long" versions work equally as well?

barnstuf · 04-08-2019, 02:35 PM

Whatever it is I believe it is a Sears Roebuck Cross Country brand.

M2M · 04-09-2019, 10:19 AM

Quote:

Originally Posted by barnstuf

Whatever it is I believe it is a Sears Roebuck Cross Country brand.

Correct. Nice to have a guy on the forum who knows their plugs.

04-07-2019, 09:56 AM	#1
M2M Senior Member Join Date: Jul 2012 Location: Australia/USA/EU/Soviet Russia Posts: 1,105	Is this a Model A spark plug? __________________

04-07-2019, 10:17 AM	#2
jw hash Senior Member Join Date: May 2010 Location: Auburn Washington Posts: 2,552	Re: Is this a Model A spark plug? it is not original, but it looks to be correct for the Model A,

04-07-2019, 10:30 AM	#3
JBill Senior Member Join Date: May 2010 Posts: 702	Re: Is this a Model A spark plug? How about a picture where we can see the label?

04-07-2019, 10:56 AM	#4
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: Is this a Model A spark plug? It looks like it would protrude pretty far into the combustion chamber . While it would fit a model A head , my guess is model T spark plug .

04-07-2019, 11:53 AM	#5
Joe K Senior Member Join Date: Jul 2010 Location: Cow Hampshire Posts: 4,188	Re: Is this a Model A spark plug? IIRC, Model T plugs have pipe thread? Joe K __________________ Shudda kept the horse.

04-07-2019, 12:16 PM	#6
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: Is this a Model A spark plug? Sponsored Links (Register now to hide all advertisements) I've never owned a model T and didn't know that model T spark plugs had pipe threads .

04-07-2019, 12:32 PM	#7
Railcarmover BANNED Join Date: Apr 2017 Location: Sacramento Posts: 1,262	Re: Is this a Model A spark plug? Tiger plug...

04-07-2019, 01:07 PM	#8
ursus Senior Member Join Date: May 2010 Location: Oregon Posts: 1,374	Re: Is this a Model A spark plug? Numerous manufacturers made plugs for the Model A. Some were private label plugs for retailers like Sears, Wards, Gamble's, etc.

04-07-2019, 01:50 PM	#9
M2M Senior Member Join Date: Jul 2012 Location: Australia/USA/EU/Soviet Russia Posts: 1,105	Re: Is this a Model A spark plug? Firstly, it's important to remember that 7/8" plugs pre-date the Model A, there were available during the Brass Car era. My understanding is that the 7/8" plugs came in three lengths...regular, long and extra long. The one in the photo at the top I think might be the "long". This I think is "regular": This I think is "extra long" : Early Model Ts received 1/2" pipe "regular" size plugs, then changed to 1/2" pipe "long" size plugs once the lower compression "high" heads started being fitted. What length 7/8" plugs were factory fitted to the Model A? Do both "regular" and "long" versions work equally as well? __________________ Last edited by M2M; 04-07-2019 at 01:56 PM. Reason: added photo

04-08-2019, 02:35 PM	#10
barnstuf Senior Member Join Date: May 2010 Location: Cape Cod MA Posts: 2,840	Re: Is this a Model A spark plug? Whatever it is I believe it is a Sears Roebuck Cross Country brand.