valve cover o rings?

[Evan]

What size are the valve adjustment cover Orings? & what size is the o ring to the tach drive?

 

[Evan]

for gt sf?

 

[Paul Marx]

This is for the tappet covers: 50,47 x 55,71 x 2,62

No idea for the rev counter drive.

Paul

 

[angus]

Rev counter drive O ring 13mm ID x 2mm section

Angus