MRZ pulley review
#77
I didn't write the wording but I believe it's:
Stock - original harmonic balancer
OEM - MRZ original harm bal size
UDP - MRZ undersize Pulley
Last edited by Red07SSNA; 09-22-2008 at 06:33 PM. Reason: Automerged Doublepost
#79
Jn2 thanks for going through this!
In truth the difference is very small -- and the dyno runs are so close that I'd bet money that if you had simply done 3 pulls without changing anything and waiting for 10-30 minutes between pulls you would see very close graphs similar to those pictured. The pulley slows the alternator and the AC compressor and reduces spinning mass weight so it will provide SOME increase in power. I would venture to say that it could shave a tenth or two on the dragstrip -- at the most. It is another item to put on your wish-list...all the items (exhaust, intake, header, etc) add up when put together.
In truth the difference is very small -- and the dyno runs are so close that I'd bet money that if you had simply done 3 pulls without changing anything and waiting for 10-30 minutes between pulls you would see very close graphs similar to those pictured. The pulley slows the alternator and the AC compressor and reduces spinning mass weight so it will provide SOME increase in power. I would venture to say that it could shave a tenth or two on the dragstrip -- at the most. It is another item to put on your wish-list...all the items (exhaust, intake, header, etc) add up when put together.
#85
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i was the first to get a TTR auto engine mount,but 180+ for a pulley, **** i paid 200 for 2 pulleys with a belt for my blazer. maybe if they do a group buy and the prize is right
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deleting balance shafts and a lightweight crank pulley is effectively removing the two parts of our motor that cancel out vibrations.
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