Solid Metal motor mount?

[truegearhead]

I just picked up an OEM motor mount to replace my failed one, but the rubber doesn't look anywhere near sufficient which I guess is why they fail so often. I'm thinking about sending it to my machine shop and having a solid metal bushing installed. Has anyone done this? Does it make the car miserable?

[thstone]

Depends on what level of NVH (noise, vibration, and harshness) you find acceptable.

When my stock engine mount failed, I installed a semi-solid or "performance" motor mount which transmittted quite a bit of vibration from the engine to the chassis and cockpit. I was able to sit at a light and see the reflection in the rear-view and side mirrors vibrate. I would guess that a solid mount would be much worse.

For me, this level of vibration might be acceptable in a track-only car but not for my daily driver so I switched back to a stock motor mount (which I'll probably have to replace again in 50K miles).

[Stroked & Blown]

I was going to point you at Pedro's up-rated engine mounts, but it looks like they've been discontinued: http://www.pedrosgarage.com/Site_2/TechnoMount.html

[landrovered]

A solid metal motor mount may cause problems with knock sensors. There was quite a ruckus about the semi solid ones (which I have) on another forum. The semi solid increases NVH a lot, a solid metal one would indeed be unbearable if it does not mess up the knock sensor.

I really like the Wevo mount, you might as well.

[truegearhead]

Since the new stock mount has a large cavity on ether side I'm going to fill it will polyurethane and see how that goes. I've done it before on a BMW mount with success.

[ekam]

Most people don't realize the amount of vibration the engine can transfer in a mid-engine configuration. There has been more people here switching to a race mount, realizes they feel the vibrations in their bones and went back to the 987 mount than I can count.

Even if you can stand it I don't think your girlfriend/wife will.

[Daniel R]

I installed the old Pedro Race Mount a while back. It is essentially solid PU. While the initial feeling was WOW, this feels so tight, the enjoyment does seem to trail off with time.

The only downside I have experienced is that my car seems to have a LOT more rattles now than prior to the solid mount.

Also, and I am only speculating here, I think that it may have made the transmission mounts work harder and wear faster. Perhaps someone with greater technical knowledge of these things could confirm or refute this??

[jmatta]

I have solid mounts (engine and trans) on the '73 911 and you wouldn't want it in a street car.

[blue2000s]

Originally Posted by truegearhead

I just picked up an OEM motor mount to replace my failed one, but the rubber doesn't look anywhere near sufficient which I guess is why they fail so often. I'm thinking about sending it to my machine shop and having a solid metal bushing installed. Has anyone done this? Does it make the car miserable?

Maybe going by looks isn't the best measure.

[Topless]

Solid mount = unbearable + it will likely trigger the knock sensors and retard timing and performance.