Model B Compression

[James Rogers]

B engines would have the same compression readings as a Model A with a comparable head since the deck, pistons and, stroke is the same, Oversize pistons would make a negligible difference so, you can discount that. I have run compression checks on many engines with many different heads and suspect the sears guage is closer to correct. I find a motor with any oversize piston and a Snyder 5.5 will read between 95 and 100#.