Quote:
Originally Posted by fstrnldr
Then google the problems with running an un-dampened crank pulley and what harmonics can do to an engines internals.
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Yup.. with engines that have a harmonic dampener on the crank pulley, and aren't internally balanced, which the 3.7L 370Z motor is, would be a concern.
The Z motor is internally balanced, and the stock steel pulley (while needs to be extremely balanced, and getting a random pulley from somewhere sketchy like eBay is HIGHLY unadvised..) is heavy and can be improved on by moving to a billet aluminum pulley at a 1/4 of the weight.
There is a small rubber ring separating the internal and external portion, of the cast steel pulley, which acts as a dampener for itself and the accessories.. but the Z does NOT utilize a harmonic dampener.