After months of trying different things to solve my problem with alternators quit charging after a few minutes driving.
I have a big block with little room
1. Went thru 5 different alternators
2. They all charge when cool
3. Added new ground wire, new hot wire.
4. Added new resistance line, added new resistor.
Used different brands of alternators, but they all had the gm design, one fan on front for cooling.
5. Tried different amp alternators from 45 amps thru 160 amps.
6. Tried 3 wire alternators, and single wire alternators.
So finally I decided it had to be a cooling problem, because once the alternators cooled down they all started charging again.
When the alternators got hot the internal regulators would shut down.
It mounted to my gm brackets no problem.
I changed it to a v belt pulley.
Next you need a pigtail adapter.
Delco pigtail connector from Painless Wiring
The CS-130D alternator was introduced as the standard application for most GM vehicles. It came standard as 100 & 105 amp models. Although it only adds a "D" to the CS-130 designation, the CS-130D alternator is completely different from the earlier CS-130 series (shown below). None of the parts are interchangeable. 1994 to 1996 GM used both the CS-130 and CS-130 D. You must visually check to see which unit you have if your vehicle is within the transition years.
Improvements over the CS-130 Alternator include:
More open design for better air flow
Dual Internal Fans to increase air volume
Regulator and Rectifier located on the outside, away from stator and rotor heat.
Les AD1 USNR-R Sometimes the things that may or may not be true are the things that a man needs to believe in the most: that people are basically good; that honor, courage, and virtue mean everything; that power and money, money and power mean nothing; that good always triumphs over evil; that love, true love, never dies... No matter if they're true or not, a man should believe in those things because those are the things worth believing in."Hub McCann Secondhand Lions"
No, it doesn't need another fan.
That's a good upgrade but upgrade the wire from the alternator to the battery/starter if you go to the high output alternator.
The pigtail pictured is for a 10SI alternator. A CS130 uses this type pigtail.
Sent from my 1981 IBM 5150 PC.