The Ford Barn - View Single Post - Rethreading Spark Plug holes in Aluminum Heads

topfuel724 · 04-16-2024, 04:48 AM

Thanks everyone for your replies. The heads are installed on this engine (276 CI) and it is in a 1940 coupe. I am hoping to do the repair (# 2 cylinder) without removing the heads from the engine. I am using Autolite #216 plugs having a .437 thread reach.

Should I use the 3/8" or 7/16" time-sert as I do not want to have the insert project into the combustion chamber to create any "hot spots". Again thanks for all your comments.

04-16-2024, 04:48 AM	#7
topfuel724 Member Join Date: Oct 2011 Location: Fort Worth, Texas Posts: 74	Re: Rethreading Spark Plug holes in Aluminum Heads Thanks everyone for your replies. The heads are installed on this engine (276 CI) and it is in a 1940 coupe. I am hoping to do the repair (# 2 cylinder) without removing the heads from the engine. I am using Autolite #216 plugs having a .437 thread reach. Should I use the 3/8" or 7/16" time-sert as I do not want to have the insert project into the combustion chamber to create any "hot spots". Again thanks for all your comments.