Quote:
Originally Posted by Jim Brierley
The first number of the serial number indicates the compression ratio. Winfield used the crows foot on the 7:1, but not on all 7:'s. It looks like the plugs are 14mm??? Early Winfield's used 18mm. He made a few in aluminum, I think only for the Super Winfield's?
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WOW, my serial number is 9111. The number cast into the top left front
is 1-28, crows foot chamber with 18mm plugs.