What are the effects of years in the 928 torque tube?
One can see the effects of many years of being in the 928 torque tube by the pronounced wear and flattening of the rubber holders meant to keep this vibration dampener from sliding in the torque tube. We have found these vibration dampeners come apart with heat and age.
Why are Porsche 928 Super bearings so important?
The 928 Super Bearings were also designed to do away with the problem prone Porsche vibration dampener which was placed into the 928 torque tubes to quell drive line vibrations. Below is a picture of an original 928 torque tube vibration dampener still in one piece.
Where is the fill hole in a Porsche 928?
Buy about three feet of 3/8″ hose and a funnel that friction fits into it. 3/8″ hose friction fits between the battery box and the gas tank. One end in the fill hole in the transaxle the other end behind the car higher than the fill hole.
What kind of drive shaft does a Black Sea 928 have?
MY 1987 torque tubes have been found to have both a 25mm or 28mm drive shaft depending on when the torque tube was manufactured in 1987. MY 1988 and later 928 automatics, to include the GTS variants, used 28mm drive shafts.
What causes a drive line to go bad?
They generally accelerate rapidly and result in ruined components. Some recognizable signs of u-joint deterioration are: The most common reasons for u-joint wear are lack of lubrication, inadequate lube compound quality, inadequate initial lubrication or failure to lubricate properly and often enough.
What causes u-joint wear on a driveline?
The most common reasons for u-joint wear are lack of lubrication, inadequate lube compound quality, inadequate initial lubrication or failure to lubricate properly and often enough. On Quick Disconnect applications, excessive bearing rotation could cause premature wear of components involved. The causes of rotation are:
What to do when transmission slips in Porsche 928?
Condition: Transmission slips in all selector lever positions Correction: 1, Check modulating pressure, adjusting if necessary. If not adjustable, check movement of modulating pressure control valve. Clean modulating pressure safety valve in shift valve housing upper section, 2. Check whether vacuum line from intake branch to vacuum box is plugged.
Why was the Porsche 928 a good car to drive?
Porsche utilised a transaxle in the 928 to help achieve 50/50 front/rear weight distribution, aiding the car’s balance. Although it weighed more than the difficult-to-handle 911, its more neutral weight balance and higher power output gave it similar performance on the track. The 928 was regarded as the more relaxing car to drive at the time.