FS USA Porsche G50 Transaxle Throwout Bearing

[Neil]

Porsche Clutch throwout bearing for G50 transaxle. This is the new 32mm size. Porsche part number 950.116.080.08. Unused. Includes a flywheel needle bearing insert for a Chevrolet small block or KEP flywheel. $200 + shipping.

I'll throw in a replaced (junk) G50 clutch release shaft and paperwork showing what the replacement entailed. The original needle bearing design violates the basic engineering principle of needle bearings- do NOT use them in a limited back & forth motion application. The needle bearings wear a dry track in their housing and then Brinnell and seize- a rookie mistake by Porsche. The "quick fix is to replace the shaft and needle bearings with plain bronze bushings.

The flywheel needle bearing works as it should since its rotation is only in one direction.

 

[likorplf]

Also included is a replaced (junk) G50 clutch release shaft and documentation showing the issues and the solution, which involved replacing the original needle bearings with plain bronze bushings. The original needle bearing design in the clutch release shaft was prone to wear, seizure, and failure due to the limited back-and-forth motion—an issue with the original design by Porsche. The flywheel needle bearing is noted to work properly, as it rotates in only one direction.

 

[likorplf]

Also included is a replaced (junk) G50 clutch release shaft and documentation showing the issues and the solution, which involved replacing the original needle roller bearings with plain bronze bushings. The original needle bearing design in the clutch release shaft was prone to wear, seizure, and failure due to the limited back-and-forth motion—an issue with the original design by Porsche. The flywheel needle bearing is noted to work properly, as it rotates in only one direction.

The solution involved replacing the original needle bearings with plain bronze bushings. Bronze bushings are more durable in this scenario because they can handle the back-and-forth motion better and are less prone to failure from wear or seizure, unlike needle bearings in such a confined application.