Vibration Damper and L/W Flywheel (993)
 

We are having an interesting discussion with a customer and I need a little input.

His 993RS is fitted with the non-damper l/w single crank pulley. Before he took delivery the engine was rebuild by Porsche and a l/w flywheel setup (non DMF) was fitted.

The question now is - should one fit a vibration damper pulley on the front of the crank to compensate for the new l/w flywheel setup?

We have several 964/993 engines running the Clubsport type l/w flywheel, and sofar have had no problems.

Would there be a difference btw a road and a pure track setup? i.e. use vibration dampers only for a road engine?

Regards
Tom

Tom,
Check the post "New problem with 3.6 case" on this page. Lots of great info.

A case of premature posting... Just read that thread and you're right - good info.

Tom

No, they serve unrelated functions, the 964 used a harmonic balancer to address some issues specific to the 964 crank, a 993 does not have those issues.

The dual mass flywheel was intended to address transmission gear rattling issues(as was the original rubber center clutch)

no, the difference is between 964 and 993

993 Cup cars did use the harmonic balancer but I believe that was because of production line expediancy related to the early date of their manufacture