correct 997 Cooper pulley?

[Cole Liggett]

Trying to sort out which crank pulley the 997 came with. Was it the simple pressed type or was it the two piece similar to the cooper s type? I seem to remember my 998 cooper engine having the simple pressed crank pulley but the Anatomy of a Classic Mini book says that the 997 Cooper should have a two piece pulley with the 12a366 pulley and the 12a367 damper. Anyone able to confirm which type?

Also curious if there is a difference between dynamo pulleys between 850/997/1071? Looking to find a date coded dynamo and wondering if I need to watch the pulley. My car was built July 63

Are there different sized water pump pulleys? Sorry for so many pulley questions, just wanting to make sure I get this right.

Cheers,
Cole

[OGW 1082]

Hello Cole,
I can confirm that the 997 used the 2 part crank pulley and balancer.I can't answer the other questions but someone
on here will know for sure. I just looked at the factory parts book I have and it lists the same part # for the water pump
pully and dynamo pully for 997 and 998 engines.
Glen

[Dearg1275]

Hello Cole,
I can confirm that the 997 used the 2 part crank pulley and balancer.I can't answer the other questions but someone
on here will know for sure. I just looked at the factory parts book I have and it lists the same part # for the water pump
pully and dynamo pully for 997 and 998 engines.
Glen

The 997 used both types of crankshaft pulley. Initially the two piece S type and then the one piece.

A72B033B-2699-4A73-A8C3-F3C09F6F957D.jpeg

The change point is at engine numbers 28516 for low compression engines and 26304 for high compression units. Gold seal replacements definitely came with the one piece pulley. I have one. Whether all gold seals were like this I don’t know.

D

[OGW 1082]

There you go Cole. I new someone would know.I was wrong.
My parts list books are Australian Pub1011m. The information doesn't seem to be as comprehensive as the
one posted .
Glen

[Cole Liggett]

This is really great info! Thank you all for the help!