The Ford Barn

kwisor · 05-05-2013, 08:11 PM

hello all
fri i bought 4 w16y spark plugs for the tudor when i took the old w16y out and cked it to the new one from nappa it is taller and has more threads did not bolt in very easy and i didnt get all the way in i was afrade it might hit the piston so i will take them back tomorrow i will take photos tomorrow to show the differance. has anyone else had this happen nappa price is about half of the cost of the venders
kevin
1930 model a tudor
1923 model t roadster p/u

James Rogers · 05-05-2013, 08:25 PM

I don't know why the plugs have more threads but, you don't have to worry about them hitting the piston. The plug hole is offset from the piston. If you look in the plug hole you will see it won't hit.

Tom Wesenberg · 05-05-2013, 08:49 PM

The old plugs may have had too few threads, then the exposed threads in the head would get loaded with carbon, which would make the new plugs hard to thread in all the way. Use a hacksaw to cut notches into an old spark plug threads and this will make a good thread cleaner. The old plug of course would have to have the full length thread.

kwisor · 05-06-2013, 06:53 AM

hello
here are photos of the plugs
kevin
1930 model a tudor
1923 model t roadster p/u

Richard Wilson · 05-06-2013, 07:40 AM

I have the new style W16Y plugs in one of my Model A's with no problem.

James Rogers · 05-06-2013, 11:38 AM

Sponsored Links (Register now to hide all advertisements)

Just a newer style. Nothing wrong, you bought the same ones I use to run your engine on the stand.

pat in Santa Cruz · 05-06-2013, 11:44 PM

I like the taller ones too. The copper tabs from the distributor fit better and you can get small brass sleeves for the top from Restoration Supply that almost make them look vintage ( except for that chrome base)

rons49 · 05-07-2013, 03:25 PM

Want to lose the cadmium finish. brush the bright area with a course steel brush or 150 grade paper. Clean 'em with lacquer thinner, then brush gun blue on the metal base. Voilà, pre 1956 Champions.

1937pickup · 05-07-2013, 03:41 PM

It is difficult to tell thread length from the pictures. Count the treads and see if there is a difference.

Bob-A · 05-07-2013, 04:05 PM

rons49,

Thanks for the cool skinny on the plug bases!

I just might have to try that........

Bob-A

05-05-2013, 08:11 PM	#1
kwisor Senior Member Join Date: Mar 2012 Location: lexington sc Posts: 456	w16y spark plugs hello all fri i bought 4 w16y spark plugs for the tudor when i took the old w16y out and cked it to the new one from nappa it is taller and has more threads did not bolt in very easy and i didnt get all the way in i was afrade it might hit the piston so i will take them back tomorrow i will take photos tomorrow to show the differance. has anyone else had this happen nappa price is about half of the cost of the venders kevin 1930 model a tudor 1923 model t roadster p/u

05-05-2013, 08:25 PM	#2
James Rogers Senior Member Join Date: May 2010 Location: Asheville,NC Posts: 3,104	Re: w16y spark plugs I don't know why the plugs have more threads but, you don't have to worry about them hitting the piston. The plug hole is offset from the piston. If you look in the plug hole you will see it won't hit. __________________ http://www.model-a-ford-4bangers.com/

05-05-2013, 08:49 PM	#3
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: w16y spark plugs The old plugs may have had too few threads, then the exposed threads in the head would get loaded with carbon, which would make the new plugs hard to thread in all the way. Use a hacksaw to cut notches into an old spark plug threads and this will make a good thread cleaner. The old plug of course would have to have the full length thread.

05-06-2013, 07:40 AM	#5
Richard Wilson Senior Member Join Date: May 2010 Location: NC Posts: 908	Re: w16y spark plugs I have the new style W16Y plugs in one of my Model A's with no problem.

05-06-2013, 11:38 AM	#6
James Rogers Senior Member Join Date: May 2010 Location: Asheville,NC Posts: 3,104	Re: w16y spark plugs Sponsored Links (Register now to hide all advertisements) Just a newer style. Nothing wrong, you bought the same ones I use to run your engine on the stand. __________________ http://www.model-a-ford-4bangers.com/

05-06-2013, 11:44 PM	#7
pat in Santa Cruz Senior Member Join Date: May 2010 Location: santa cruz, calif Posts: 2,011	Re: w16y spark plugs I like the taller ones too. The copper tabs from the distributor fit better and you can get small brass sleeves for the top from Restoration Supply that almost make them look vintage ( except for that chrome base) Last edited by pat in Santa Cruz; 05-08-2013 at 01:16 AM. Reason: typo

05-07-2013, 03:25 PM	#8
rons49 Senior Member Join Date: Jan 2013 Location: tucson Posts: 136	Re: w16y spark plugs Want to lose the cadmium finish. brush the bright area with a course steel brush or 150 grade paper. Clean 'em with lacquer thinner, then brush gun blue on the metal base. Voilà, pre 1956 Champions.

05-07-2013, 03:41 PM	#9
1937pickup Senior Member Join Date: Jul 2012 Posts: 586	Re: w16y spark plugs It is difficult to tell thread length from the pictures. Count the treads and see if there is a difference.

05-07-2013, 04:05 PM	#10
Bob-A Senior Member Join Date: May 2010 Location: Central FL, USA Posts: 1,182	Re: w16y spark plugs rons49, Thanks for the cool skinny on the plug bases! I just might have to try that........ Bob-A