The Ford Barn

mshmodela · 11-24-2014, 08:30 PM

I was wondering with the differences in compression ratios that the various model A heads have where the volume is typically changed? That is how close does pistion get too the head that is a higher compression one. Or is volume reduced in the area near the spark plugs and valves ? Happen to be looking at this site and was wondering
http://bangerbill.com/modelahead.html

Mark DeRoseau · 11-24-2014, 08:45 PM

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The reduced area near the spark plug and valves, is the major contributing factor for the increase in compression.

11-24-2014, 08:30 PM	#1
mshmodela Senior Member Join Date: Mar 2014 Location: Cleveland, Ohio Posts: 2,763	Head diffferences I was wondering with the differences in compression ratios that the various model A heads have where the volume is typically changed? That is how close does pistion get too the head that is a higher compression one. Or is volume reduced in the area near the spark plugs and valves ? Happen to be looking at this site and was wondering http://bangerbill.com/modelahead.html __________________ -Mike Late 31' Ford Model A Tudor, Miss Daisy I don't work on cars --I'm learning about my Model A. Cleveland, Ohio

11-24-2014, 08:45 PM	#2
Mark DeRoseau Member Join Date: Aug 2014 Location: Grand Rapids MI Posts: 45	Re: Head diffferences Sponsored Links (Register now to hide all advertisements) The reduced area near the spark plug and valves, is the major contributing factor for the increase in compression.