[Swandog64]

So I got the new shop up and running for the 87 928s4. I got it up on stands and I released the preload on the flex plate. It moved about 1/8 of a inch when i loosened the bolt. I was expecting to find a allen bolt on the clamp, but found this 13mm bolt. Did the factory ever put these in (see pic) ? I just order the PKlamp and will install before it before closing it up.

I had a real hard time getting a accurate measurement using these digital calipers. I couldn't hold them still enough. Any suggestions?

The last picture is a broken ,I believe its a vac line on the passenger side exhaust manifold: Where can I buy a replacement?