986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Installed the raby under-drive pulley

Cloudsurfer · 04-12-2010, 09:32 PM

Attached are pics of the RSS underdrive pulley with harmonic damper, designed for M97 3.8 engines. As shown, once the boss on the case has been given a haircut (like all underdrive pulleys require on these), it fits just fine once you use the longer 997 bolt.

I'm inclined to think the addition of harmonic damping is a good thing for all of these motors.

04-12-2010, 09:32 PM	#55
Cloudsurfer Registered User Join Date: Jan 2007 Location: Depends on the day of the week.... Posts: 1,400	Attached are pics of the RSS underdrive pulley with harmonic damper, designed for M97 3.8 engines. As shown, once the boss on the case has been given a haircut (like all underdrive pulleys require on these), it fits just fine once you use the longer 997 bolt. I'm inclined to think the addition of harmonic damping is a good thing for all of these motors. __________________ Boxster S