Alternator carnage w/ pics
Drifting
Joined: Apr 2007
Posts: 1,339
Likes: 2
From: port charlotte fl
I know it's easy but once again I'm confused.Why would anyone fit an overdrive pulley to any ancillary? why would you want to spin it faster? I know companies like March make underdrive pulleys to save wasted HP on alternators and power steering but I've never heard of anyone trying to spin them faster .
Last edited by staugur; Oct 29, 2007 at 11:18 AM.
Pro
Joined: Jul 2002
Posts: 514
Likes: 0
From: ceres ca
St. Jude Donor '08
I know it's easy but once again I'm confused.Why would anyone fit an overdrive pulley to any ancillary? why would you want to spin it faster? I know companies like March make underdrive pulleys to save wasted HP on alternators and power steering but I've never heard of anyone trying to spin them faster with a bigger pulley.
Thread Starter
Safety Car
Joined: Nov 2004
Posts: 4,991
Likes: 5
From: The Pines South Jersey
I know it's easy but once again I'm confused.Why would anyone fit an overdrive pulley to any ancillary? why would you want to spin it faster? I know companies like March make underdrive pulleys to save wasted HP on alternators and power steering but I've never heard of anyone trying to spin them faster with a bigger pulley.
Instructor
Joined: Apr 2007
Posts: 225
Likes: 1
From: Highland Village texas
typical stock cs130
The 3 things that fail
1. electronics from the furnace in the back
2. The rear bearing cooks and looses its grease and fails
3. The plastic internal fan gets brittle from heat cycles and blows.
Yours
The cheasy plastic rear case fan grenaded.
Thats the reason "good" aftermarkets have a metal internal fan
The 3 things that fail
1. electronics from the furnace in the back
2. The rear bearing cooks and looses its grease and fails
3. The plastic internal fan gets brittle from heat cycles and blows.
Yours
The cheasy plastic rear case fan grenaded.
Thats the reason "good" aftermarkets have a metal internal fan
Last edited by milsurpman; Oct 29, 2007 at 09:59 AM.
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Safety Car
Joined: Oct 2007
Posts: 3,816
Likes: 0
From: :45 minutes from everywhere / E-I-E-I-O
I know it's easy but once again I'm confused.Why would anyone fit an overdrive pulley to any ancillary? why would you want to spin it faster? I know companies like March make underdrive pulleys to save wasted HP on alternators and power steering but I've never heard of anyone trying to spin them faster .
You tryin' to get more amps from the alternator? Smaller wheel, more rev's in the alternator, less power to the wheels???
Or are you tryin' to get more output from the motor? Bigger alternator pulley, less alt rev's, more power to the rear wheels???
You're not confused stauger; you hit the nail on the head.
Instructor
Joined: Dec 2004
Posts: 231
Likes: 0
some alternators at vehicle idle don't spin fast enough to keep the amps/volts up where they sould be. putting on a smaller drive pulley will allow the alternator to spin at a faster speed at a given engine rpm as compared to stock. i have and run a smaller pulley. could really use a higher amperage alternator instead of stock but, this does ok in the mean time.
Thread Starter
Safety Car
Joined: Nov 2004
Posts: 4,991
Likes: 5
From: The Pines South Jersey
that info was provided with the powermaster alt, but what was really interesting was they said exceeding the 18,000rpms the cooling fan could distort and contact the belt 