Alternator pully size

blue stang · 03-25-2008, 02:01 PM

hey... I got the underdrive pulley in but it is dragging the amp down. I'm not sure on the size of the original pulley but if it is 2-7/16 then to compensate for the 25% reduction I should get a 1.828 diameter pulley to bring it back to speed. Would that be about the right size or should I go smaller?

Here's the site I was locking at if it maters. http://www.alternatorparts.com/pulley_size.htm

indisposible_teens · 03-25-2008, 02:07 PM

Did you get the correct belt to go along with the new underdrive pulley?

blue stang · 03-25-2008, 02:16 PM

yes... it was like 26-1/4"

songtradingusa · 03-25-2008, 03:26 PM

are your lights dimming, or your stereo being affected? the underdrive pulley kit i just purchased came with an alt. pulley as well...was yours just the crank pulley?

blue stang · 03-25-2008, 03:41 PM

Yes to all.

I was looking around and I found this 3G Rectifier for the 130A big case. http://rjminjectiontech.com/?p=7
$75 a cheap way to get a 200A alternator.