TwinTurbo.NET: Nissan 300ZX forum - I'm not sure that is a correct assumption of increase
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Subject I'm not sure that is a correct assumption of increase
     
Posted by SlicktopTT on January 23, 2009 at 10:04 AM
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In Reply To 4 hp at peak. 2% increase across the board, 4% at peak. posted by SactoTodd on January 23, 2009 at 09:40 AM
     
Message for our cars.

~12hp is what is about what is seen on our cars with an underdrive pulley that is also lightened. Your assumption would imply that a light weight pulley would do 12hp and a combo would do more (or that almost all the increase is due to the weight and almost none to the underdrive).

As far as i could tell, unorthodox was one of the only pulley manufacturers offering just a lightweight version of pulleys. All others are underdrive and lightweight and say that the gains are from reduction in parasitic drag caused by the accessories.

     
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