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It allows a person to install the early 8-disk LSD into the later transaxle.
From the webpage:
Application: Porsche® 928, as follows:
1985-90 5-speeds and Automatics w/o LSD that want to add an 8-disk LSD
1985-90 5-speeds and Automatics with 4-disk LSD that want 8-Disk LSD
1990-95 PSD-equipped cars that want to change to 8-disk LSD
Background: The early Porsche® 928 Limited Slip Differential (LSD) had 8 friction disks (4 per wheel). This LSD was advertised to have a 40% lock-up ratio, and performance-minded enthusiasts and racers have shown that this LSD is the strongest, most trouble-free, and can handle the greatest amount of torque. This large 8-disk LSD is probably a hold-over from the original design of the 928 as a 5 liter 400 HP muscle car before it was de-tuned before its release in 1977.
In 1985, the 5-speed "G28-10" transmission was introduced, with improved synchros by Borg Warner that made shifting smoother. However, the LSD was re-designed to half of its original strength, and the new transaxle had only about a 20% lock-up and 4 disks (2 per wheel),
The stronger 8-disk LSD is ideal for drivers who demand the most performance from their 928, those who have installed wider rear tires, supercharged cars, and racers. The customary inside-tire wheel-spin under acceleration out of a tight corner will be reduced or eliminated, and the 928 will launch out of the corner with a much higher speed as a result.
Additionally, the 8-disk friction plates can be restacked to double the lock-up if desired, raising the LSD from a 40% lock-up to 80%.
Description: Our LSD adapters make it possible to install the stronger 8-disk LSD into the 1985-and-up transaxle (manual or automatic), and we designed it so this can be done without removing the transaxle from the car.
Includes:
Custom 928MS case spacer
Custom 928MS bearing spacer
Custom 928MS bearing hub (used, remanufactured)
New Porsche® bearing seal
Fully Illustrated Instructions
Can you reserve one for me - need to see if Paul Anderson here in the UK would supply a 8-disc LSD. Would let you know by Friday latest, as Paul is very hard to get in touch with due to being a very busy man.
The later 4 discs LSD has also a 40% lock-up ratio, according to the factory.
I know that is what is published. But a quick measurement with a beam-type torque wrench like this will allow you to check a 8-disk LSD with a 4-disk LSD and compare the numbers. Jack up only one wheel as shown...
I have had my 8 disk LSD overhauled due to worn friction disks.
Unfortunately, I didn't remember the location of the red marked bearing spacer.
Where exactly should this spacer be fitted?
Picture or sketch ?
12-07-2015, 11:53 AM
LSD adapters - Discontinued Product - I have two left
