Trying to confirm S90 crankshaft, heads, engine

[Steve Hatfield]

Al, with respect, please review my HCP data base findings. The engine is a 912. The third piece is a s90

[Steven Clarke]

"Somebody here narrowed down the cross-over; please speak up. My 1/65 production coupe kept its 2-holer."

Ron, that's me with the pulley survey I started in 2007. The two hole pulleys were introduced in April-May of 1964. I would also add that the early SCs still had the left air cleaner without a breather hole until they ran out of S90 parts. My July '63 built SC had air cleaners just like picture above.

2 HOLE PULLEY SURVEY.doc

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Steve
#2311