Photos in the “Porsche 928 S4 Motor Mount, Oilpan and Steering Rack Replacement” Album
Description: Over the three day Memorial Day weekend, I replaced the Motor Mounts, the Steering Rack and the Oil Pan on my '88 928 S4.
The motor mounts were shot and the engine was sagging at least an inch. The original mounts were filled with hydraulic fluid, which smooths out a lot of vibration, but eventually leaks out. This make the engine vibration very noticable, especially at idle.
The steering rack was leaking due to failed seals. I could have rebuilt it, but I figured as long as I was pulling the whole thing off, I would replace it with a remanufactured unit and new tie rods. I had to drop it to replace the motor mounts, so it made sense to combine the jobs.
The oil pan, which is very low ( and large: 9 quarts) in the 928 had been damaged and "repaired" by the previous owner. It was leaking along the back. I found a pristine used replacement on E-Bay, and since I had to drop the steering rack and crossmember to replace the motor mounts anyhow, it was an ideal time to replace the oil pan. I also used a new silicone gasket instead of the OEM cork gasket.
This job was a real bear. Spaces were tight, bolts were tight and time ended up being very tight. I wish I had more pictures, but my hands were so greasy and bloody most of the time, I could not hold the camera.
The good news is the car is now butter smooth at idle, and no more oil and power steering fluid spots on the garage floor!