well..... have to eat some crow.
as I was installing the new clutch, decided to check out my speed senor clearance theory.
FAIL
here is a pic I took of the sensor with washer against the starter ring. the ring gear is wide enough that the teeth cannot fit into the washer gap.
so I must have set the clearance wrong. when setting with a feeler gauge with the bell housing off, had to try a couple times to keep the clearance were I wanted as I tightened the bracket bolts. hard to tell using the washer method if you put downward pressure on the bracket which may reduce the clearance from what you intended.
now for that damn hole ..... the hole I covered on the left is for that obsolete diagnostic sensor I removed.
__________________
Bob Cox
78 930 clone project car.
87 924S resurrect at some point.
84 928S, Ruby Red linen/brown interior - sold
86 944 turbo my new DE/track car - sold