Z1 Solid Aluminum Trans mount - Noise Abatement Tip
 

How many of you out there have swapped out your factory sprung trans mount. Did you buy the Poly bushed variety or the Solid Aluminum variety? Well I picked up the Z1 Solid Aluminum one. It works great and is a quick install. 20 Minutes start to finish. Well the other thing you get is all of the noise that a solid mount can transmit to the body of the car. I resolved never to look back and elected to find a solution to damping this noise. I thought that the the polyurethane bushings on the other variety of trans mount and it gave me an idea. What if I got a sheet of silicone rubber and cut small spacers in the shape of the trans mount attachment points. This was a great idea. The smallest sheet of silicone rubber I could get was 1/8" x 12" x 12" on Amazon for about $14.

Well today I spent an hour or less removing the trans mount cross member and added the small silicon cutout shapes. I used the factory cross member to trace small spacer shapes and cut small holes in them to create the four spacer pieces. I added the spacers to the Z1 Aluminum trans mount and the Factory Cross member where they bolt to each other and the car body.

The results are a welcome reduction in overall car vibrations and noise transmission through the Z1 Solid Trans mount. You still get all of the benefits of a solid trans mount and a whole lot less noise. The gear whine is muted but welcome. I am glad I did not remove the Z1 Solid Aluminum Trans mount. It really adds to the rigidity you are looking for but with the 4 small silicone spacers the noise is greatly reduced.

If you are a Z owner that has added the Z1 solid trans mount you might consider spending a bit of time and add 4 silicon spacer pieces to quiet the noise. I'm glad that I did.

Thanks for the insight man. I could use pictures because I'm dense, but the idea is plenty. Thank you, will be trying this when it comes time to replace those bushings.

Good information, I'm going to try this on my solid mounts tomorrow. I had really bad NVH at higher speeds with the solid mount.

Great idea
Pics would be greater
Is your transmission ballast still in place?

Where is thius Ballast you speak of?

Put the factory one back on. You don't need to upgrade it. Solid trans mounts are extremely noisy. Solid engine mounts make noise too but once you get going it is not a big deal. It is only noisy at idle.

or get these for DD and spirited:

https://www.vibra-technics.co.uk/nis...smission_mount

I did the z1 urethane trans mount, diff brace, urethane diff bushings, GKTech urethane subframe collars. Vibration is ok and cars much more connected.

Do you have personal experience with this unit?

Poly was a nightmare of NVH including loosening teeth, so I don't want anything even close.

Yes I do. I have their Engine mounts too.

I intially had the Poly Transmission mount from torque solution. Nice unit, but it did transfer noise and vibartion. Also, when I removed it, after low miles, the poly was already deformed.

These Vibra-techincs are rubber but denser/stiffer. Way better than OEM but obvioulsy stiffer and low to none NVH. Nice quality build too. Expensive however.

Perfect comparo as the Torque Solution is what I had as well. I put the OE back on but it's like a noodle, I can move the trans. in the mount by grabbing the tail shaft! Thanks very much for the update!!

Rep added!! :tiphat:

Installed the Vibra-Technics transmission mount. IMO this is the pinnacle for OE NVH while providing much more rigidity. I can "move" the OE mount on the bench with a finger to its max travel point. It's not blown as both in my possession behave the same, it's just a useless noodle. The new mount requires me to lean in much body weight to move it a quarter of an inch!!!

I could also grab trans. tail shaft and move it with one arm while installed in the car, that's no more with the new! I had much fore/aft movement during downshifts and throttle transitions, all of which are 100% gone with the new mount. The caveat, zero additional NVH over OE!!

I previously tried a Torque Solutions mount which immediately upon startup made the entire interior including the steering wheel vibrate like a massage gun. Couldn't even focus on what was in the rearview mirror. Maybe fine for track dedicated cars but definitely not for spirited street occasional autocross types.

Thanks tons to member ZoomZ for the recommendation!! :tup::tiphat:

You're welcome and glad you are happy with them.:tiphat: ( BTW I have no affiliation with V-T)

Hopefully I can give a positive long term review.