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Installing M97 3.8 Harmonic Damper?

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Does anyone have any info regarding making the 3.8 harmonic damper work with an M96 3.6 engine? Best I can tell, the damper simply installs behind the pulley, which is the same part # as the rest of these motors, so unless I'm missing something, the 3.8 must have a completely different accessory belt alignment to compensate for the main pulley being farther away from the engine?

Is anyone making an aftermarket damped pulley to work with the rest of these motors?

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  • 2 weeks later...

I'm sorry I didn't clarify previously, this is the underdrive pulley, from RSS, designed for the M97 3.8. As shown, once you give the boss a haircut, and use the longer bolt, it fits great. I would like to think the addition of harmonic damping is a good thing for all of these motors.



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  • 4 years later...
  • Moderators

What was the final thoughts on this?




While debate rages on concerning the use of single mass vs. dual mass flywheels on these engines, even though Porsche released a tech brief to their dealers some time ago advising against their use, the jury remains still out on the significance adding a dampening unit on the other end of the crank.  While it cannot hurt, I'm not sure anyone has demonstrated to what level it helps

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