The Ford Barn

fisher · 11-20-2013, 02:56 PM

Can anyone please tell me the correct plug spark gap for my 1914 model T

tmodelman · 11-20-2013, 06:11 PM

Ford Service Bulletin, April 1922, says Champion Ford X plug set at about .030" or 1/32" of an inch.

With Ford magneto ignition, coils, and new reproduction Champion X spark plugs, the best results can be had by usually following the maker's setting of .025"

William L. Vanderburg · 11-25-2013, 01:58 PM

To throw a little gas on the fire, my 1925 Touring runs better at 1/32 of an inch. I've tried several sets of plugs including original X's, reproduction X's, Motorcraft replacement plugs and an original set of Ward's plugs and set them all at .025 and they run like crap.

I have an original set of X's in the car now set at .032 and they run great.

redmodelt · 11-25-2013, 08:14 PM

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I run mine about .028 seems happy there. But a lot depends on YOUR car. Start at .025 and work your way up to where it seems to run best at different DRIVING speeds. (Running used Wards now)

11-20-2013, 02:56 PM	#1
fisher Junior Member Join Date: Oct 2013 Location: Scotland Posts: 11	Gap spark plugs Can anyone please tell me the correct plug spark gap for my 1914 model T

11-25-2013, 01:58 PM	#3
William L. Vanderburg Member Join Date: Nov 2010 Posts: 48	Re: Gap spark plugs To throw a little gas on the fire, my 1925 Touring runs better at 1/32 of an inch. I've tried several sets of plugs including original X's, reproduction X's, Motorcraft replacement plugs and an original set of Ward's plugs and set them all at .025 and they run like crap. I have an original set of X's in the car now set at .032 and they run great.

11-25-2013, 08:14 PM	#4
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,340	Re: Gap spark plugs Sponsored Links (Register now to hide all advertisements) I run mine about .028 seems happy there. But a lot depends on YOUR car. Start at .025 and work your way up to where it seems to run best at different DRIVING speeds. (Running used Wards now)