A smelly question

[Starter986]

Originally Posted by thstone

Yes, the transmission mounts contain a highly viscous fluid that dampens drivetrain vibrations. One of my trans mounts started to leak and there were drips of fluid on the ground.

Thank you, guys.

That explains why they're so darn expensive.

Anyone know...

1. Why they contain fluid in the first place?, and...

2. Is there a non-fluid alternative?

Every day I learn something new from this forum.

Thanks!

[BYprodriver]

Originally Posted by Starter986

Thank you, guys.

That explains why they're so darn expensive.

Anyone know...

1. Why they contain fluid in the first place?, and...

[B]2. Is there a non-fluid alternative?

[/B]Every day I learn something new from this forum.

Thanks!

There are solid mounts available, do a search to see pro's & con's. For a street car I believe new oem mounts are best.

[thstone]

Originally Posted by Starter986

1. Why they contain fluid in the first place?

I don't know know for sure, but these mounts were used on the 993 (as engine mounts since the engine is in the back of a 911 rather than the transmission) so its something that they had available and already in production.

Originally Posted by Starter986

2. Is there a non-fluid alternative?

Yes, there are full rubber mounts and some semi-solid mounts. Both will increase vibration quite a bit. I have the semi-solid mounts on my Boxster but its a race car so NVH (noise, vibration, harshness) isn't a concern.

Do a search and you can find several posts discussing the merits of other mounts and other owners experiences.