14* ATDC is the reference timing spec for the RIV method. An arbitrary tang aligns with an arbitrary hole in the IP case when the crank is at 14* ATDC. It has nothing to do with start of delivery which is closer to 24*BTDC. Why they couldn't use TDC as the reference timing spec is beyond me. Wouldn't it be nice to remove the cam and IP at the same time?

Sixto
87 300D