The Ford Barn

Jim Brierley · 04-24-2024, 11:22 AM

Just how many people do you think have ever measured that thickness? I think not many, less than 1%. So how do you expect to get any exact answers? People above have said that a 4" bore (.125") will still allow the A engine to run cool, what more do you expect? I have raced my B engine on the Bonneville salt flats with a 4" bore with no heating problems. In the old days guys raced them with at 4.060". This required off-setting the bores to gain head gasket sealing between 1&2 and 3&4 cylinders, many did this. Racing puts a lot more heat into the block than driving to the local market. Get real!

04-24-2024, 11:22 AM	#13
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,321	Re: The absolute 'MINIMUM' cylinder wall thickness.... Just how many people do you think have ever measured that thickness? I think not many, less than 1%. So how do you expect to get any exact answers? People above have said that a 4" bore (.125") will still allow the A engine to run cool, what more do you expect? I have raced my B engine on the Bonneville salt flats with a 4" bore with no heating problems. In the old days guys raced them with at 4.060". This required off-setting the bores to gain head gasket sealing between 1&2 and 3&4 cylinders, many did this. Racing puts a lot more heat into the block than driving to the local market. Get real!