I remember that pulley. They recommended that one to me also for my '93 but
I was already running one from a '98+ that's smaller then the '93 and their
overdrive pulley was only slightly smaller then the '98+ which helped some
but not back to normal. That's when I went to the Chevy one. It's only
1.687" diameter.
James
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of John Burgan
Sent: Sunday, April 29, 2007 9:42 PM
To: dakota-truck@dakota-truck.net
Subject: RE: DML: RE: Alternator Upgrades
>>>Yep, I don't know if any studies have been done on this or not, but I
can't imagine there is much horsepower to be gained by underdriving the
alternator anyway... When I switched to underdrive pullies on my Dak many
moons ago, charging at idle was nonexistent. The lights would dim, and the
needle would dip WAY to the left, etc. I reinstalled my stock alternator
pulley which was better but still not great, then I got an overdrive pulley
from fellow DMLer John Burgan at Carlisle one year, and that did the trick.
(Its a smaller pulley than stock so it counteracts the underdriven crank
pulley to bring the rpm of the alternator pulley back up to about where it
would be stock.) I'm not sure who makes these or where you would get them,
but I'm sure they must be available out there somewhere. Might be an option
for you to consider - its certainly cheaper than a new alternator at any
rate! :-)
I purchased that pulley directly from March for my '96. I called them about
my truck showing discharge at idle and that is the pulley they recommended.
-John
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