MRZ underdrive Pulley?

[19Cutlass94]

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[betterthanyou]

While I am inclined to agree, does a dual-mass flywheel (a-la a 3900/F40 combo) accomplish the same thing? Does the presence of a DMF negate the need for a damper in the crank pulley?

Discuss amongst yourselves.

No, dual mass flywheels are designed to dampen low rpm chatter and vibration going to the drivetrain. They are made to make driving more comfortable. They are mostly used on diesel engines to dampen the harsh rumble of a low RPM motor with a lot of load on it. They are not designed or tuned for high RPM torsional vibrations coming off a crank.

If you want the benefits of an under drive pulley and none of the risks of not having a damper then make all the other pulleys bigger. All the GM cars and truck use the same width of belt so finding and adapting parts may not be too hard. This also allows you to customize the drives. So if you need that alternator to give full charge at idle then you can continue to have that but change the water pump and power steering pump pulleys to under drive them and save on power only in that area.