New guy to the Forum here. 15 year 928 owner. I recently purchased and installed the 928 Motorsports alternator upgrade kit. It was the easiest project I've ever done to this car. The kit, the instructions, the power of the added amps, it all worked. It went together so well I had to triple check to see if I had missed something. The most difficult portion of this procedure is removing the original factory alternator. As for the power output; primary and secondary electrical component operational improvement is quite noticeable: fans, windows, starter, battery charge. Weight savings felt like around 15 lb. I should have done this 14 years ago. Tony D.
I have had several alternators on my 1984 928s over the years. It came with an Audi alternator which failed. I used one of Carl's high output alternators, which needed a rebuild after 5 years. I tried a OEM style Bosch, which failed after one year. I am back to Carl's aftermarket item. Christian R
Carl, Let me begin by thanking you for all of your support on the alternator upgrade. I have the new pulley installed and I am getting a good charge even at idle unless I have "everything" going and even then it's far better than the stock set up. Steve LP
Application: Porsche® 928 1978 through 1995 all
Background: The first Porsche® 928s were introduced with 90 amp alternators. When these were found to be too weak for the option-laden Porsche’s luxury sports sedan, they upped it to a 115-amp alternator to try to solve the problems these weak alternators were causing.
This is our NEW 2nd Generation Design: The key feature of this alternator is that it has a segmented conductor stator, (commonly referred to as a hair-pin stator) and uses square-wire technology. Wrapping the stator core with square shaped angular copper wires allows more windings in less space which means better performance and increased durability for you. Our stator has half of the internal resistance found in traditional round-wire units, and its compact size allows better cooling around and through the alternator. The old, traditional round wire stators are not as efficient, more sensitive to heat, and prone to breaking at high RPM.It can help with these problems:
Simple Installation: Our case is machined from billet for a direct bolt-up to your 928. Mounts exactly in the same way as the stock alternator. Wiring is direct too – just like the original! Arrives ready to install with the right pulley already on it.
Warranty: Each of our alternators comes with a 1-year free replacement warranty.