amp

the main idea behind the dual alt pulley..

is to increase contact patch to the water pump after a/p removal..

theres also a reduction in alternator rpm

but not substantial enough to be of concern even at idle

i dont see how switching from one brand to the next will vary

no offense to banzai .. refer to baldys post on a possible clearance issue with remans

JspecRX7

Ok, Hey how much do you want for you alternator pulley 1Revvin7? Its a dual pulley right? thanks for the help though..

1Revvin7

banzai is not an underdrive pulley, just a dual alt pulley....

Rx7Roadster

Underdrive pulleys are not worth it. The miniamal gains, cost, and work are not worth it.

FCmaniac

I only got it because of air pump removal before I knew about Banzai's which are stock size, plated, and only $20.

amp

for those of you who are indicating minimal or no gains..

curious to see if yall actually have data to disclaim their benefits..

or are these just personal opinions..

vosko

i have no verified data except that i have more money in my pocket. i did invest in the dual alternator pulley from banzai since it makes use of the extra belt from removing the air pump

FCmaniac

I have no proof of anything but I imagine when I put the RB main pulley on to go with the alt pulley, it has to be some gain over the stock pulley set up... it weighs about half as much BUT I dont need the AC, AP, or PS belts so I'll only be running the two alt belts.

1Revvin7

Well from seat of pants dyno( ) there was way more gain than the intake which costed the same..... Anyhow I think I am going to sell the whole setup, $100.....