Leak, look at your exhaust tips from the rear, sometimes you can actually see the sag. Mine were fine when I replaced but I've seen other that have split and lost fluid (the stock are fluid filled).

For such an easy DIY and cost I'd recommend any higher mileage cars to look into it...

 

In my case, with the car on the hoist, you could grab the mufflers and rock the engine from side to side to an alarming degree. You can't imagine how this affects the feel of a car until you correct it.

 

So Bruce, which motor monts are you leaning towards?

 

The reviews for the 993 RS option sound like what I'm looking for, plus I'm encouraged that somebody sells it as a kit (that means there's a market, which means it suits a lot of people). So that's where I'm leaning. Will be interested to get perspective from my tuner guy.

 

I installed WEVO semi-solid 997 motor mounts in my '03 C2. If you search posts by me here on RL you will see a long write-up I did. More than a year later and I am still a happy camper. Minor increase in engine vibration in the cabin, but nothing a passenger would notice. No additional noise. Totally eliminated the stock mounts' vertical and lateral heaves under track driving and over bumps. This is a win-win mod from my perspective.

 

I have been wanting to do the motor mounts as well. As mention Gert Carnewal sells this as a package. No affiliation here. They call it "Rennsport Motor Mounts for P96/P97" and it runs around $400 USD. Looks to be made of parts from 993's and the correct hardware for our cars.

 

That's the route I decided to go. Parts ordered. I'm stoked to get them in. Very underrated mod. Thanks to all for the great help!

 

Sweet! Looking forward to a critique once you have them installed.

 

Looking forward, as well. Thanks

 

I just had these installed in my race car. They work great in terms of keeping the drive from moving about so much under load. Very difficult however to evaluate how they would be on a commute. I doubt they would be bad, but my race car is so loud and rough riding that I really can't evaluate vibration.

 

Most people also get a invalid/biased opinion since they are usually replacing an old worn or blown out mount/mounts with a new stiffer one.

Yes, they transfer more vibrations which = some more noise.
Yes they make the car handle better, shift better.

Each individual must decide if the compromise is good for them. I like the RS mounts and feel they are a great compromise from doing a solid mount.

Solid mounts are good for race cars provided that they get looked at and nut n bolted every weekend, and also have parts cycled out based on time before failures occur. But solid mounts don't belong on street cars, IMHO.

 

The RS mounts are not completely solid, the wevo are I believe. The RS are a 964 part number and are still used for modern RS applications.

 

Meant to add these... Stock versus RS and RS installed...

 

Not much to go wrong with those if you chose to jack the rear from the engine by the looks of it.

 

Sorry, I guess I wasn't too clear.
I like the RS mounts, they are a solid rubber although much smaller rubber piece than the stock fluid filled ones.

The Cup car are the solid mounts,as well as a few other aftermarket copycats, solid meaning all metal with no compliance and lots of vibrations.

Wevo makes a solid mount and a couple variations of a SS (Semi-solid) mount which uses a couple of small pillow style bushings. - I'm not sure the material they use, looks like a polyurethane of some sort, they claim harder than stock and I am sure it is.

Hope that helps make it clearer.