The Ford Barn

sanborn · 02-26-2014, 01:44 PM

We are finally getting to assembling the flathead engine. What spark plug plug should I use? The heads take a 3/4" plug, 14MM, the compression ratio will be 9.35 to 1.

flat-v8 · 02-27-2014, 08:47 AM

I have Autolite 437 in mine, it is a little hotter plug than standard 216

sanborn · 02-27-2014, 03:45 PM

Sponsored Links (Register now to hide all advertisements)

Thanks! At least I have a starting point.

02-26-2014, 01:44 PM	#1
sanborn Senior Member Join Date: Jul 2010 Location: Shelbyville TN Posts: 174	Spark Plug Heat Range Question We are finally getting to assembling the flathead engine. What spark plug plug should I use? The heads take a 3/4" plug, 14MM, the compression ratio will be 9.35 to 1.

02-27-2014, 08:47 AM	#2
flat-v8 Senior Member Join Date: Nov 2010 Location: Magnolia Texas Posts: 586	Re: Spark Plug Heat Range Question I have Autolite 437 in mine, it is a little hotter plug than standard 216

02-27-2014, 03:45 PM	#3
sanborn Senior Member Join Date: Jul 2010 Location: Shelbyville TN Posts: 174	Re: Spark Plug Heat Range Question Sponsored Links (Register now to hide all advertisements) Thanks! At least I have a starting point.