dr bob

Fifteen minutes or less with the car cold, up, and a jack under the gearbox. One bolt from the bottom through a crossmember ear into the mount. One lateral through the mount into the gearbox. Access with some tools can be fun, but a flex-head gear wrench set will help some with the lateral bolts. I ended up using a couple extensions and a universal-jointed socket to come in wide on one side. WSM warns of maintaining the shim packs where the mounts sit on the crossmember, but there were none on mine when I took it apart the first time.

I managed to pinch the trans temp switch wiring in the right-side mount. Don't Do That. It will cause the fans to run on slow and drain the battery if you don't catch it.

NoVector

Here's a picture of what Dr. Bob is describing. To orient yourself, this is looking through the rear wheel well. Using a couple long extensions connected together, it's a straight shot to get the socket on the lateral bolts.



Unrelated, I bought my mounts in 2012 and they were $140 a pop. I looked on Sonnen today and they're now $165. Considering Porsche's other crazy price increases, this doesn't seem so bad.

Constantine

Are the Porsche replacements that expensive to warrant other such alternatives?

dr bob

I guess it's a sticker-shock and point-of-view issue. I replaced mine when I was working to eliminate the hot air through the shifter area syndrome. Kind of like that constantly-nagging ex, I didn't realize the noise level until it wasn't there any more with new mounts. Mine had sagged about half way in 25 years, so the few dollars a month rental cost on new mounts didn't make a significant blip on the $radar really. Still, I experimented some with filling the cavities on the original mounts before I popped a new set of Porsche mounts in there.