Torsion Tube Carrier - Aluminum Mounts

[Latitude48]

Hello,

I'm looking for feedback from anyone that has installed solid aluminum torsion tube carrier parts in place of factory metal/rubber parts, items #6 and #12 in the PET image. I'm specifically interested in any perceived increase in noise, harshness, and vibration. I have Racer's Edge spherical bearings for the item #4 trailing arm so might consider also installing the solid torsion tube carrier mounts when I do the suspension on the 951. Thanks.

[Tom]

No experience with that part sorry, but I can tell you I tried a 'semi-solid' transmission mount and it was crazy loud for a street car. I'd imagine those parts don't transmit as much noise, but I'd be pretty cautious on a street car. What's the motivation to change them?

[Latitude48]

No experience with that part sorry, but I can tell you I tried a 'semi-solid' transmission mount and it was crazy loud for a street car. I'd imagine those parts don't transmit as much noise, but I'd be pretty cautious on a street car. What's the motivation to change them?

No real motivation to change them other than I will be dropping the torsion tube sometime in the future and was just thinking/planning ahead if this is something that makes sense. The 911 torsion tube is permanently attached to the body and doesn't have issues that I know of, but the 944 cars use some rubber in these two attachment areas, possibly because the 4 CYL cars vibrate more?

New Porsche parts are crazy expensive, like more than $800 to replace these four mounts. Billet aluminum is about one-half that price. I don't have any idea if these wear-out or not due to aging of the rubber, which is why I'm looking for feedback.

[355]

I have no experience either with those mounts but I would expect making them solid would cause a lot of vibration and harshness issues. To me the driveline in my 944 feels very rubbery and dampened compared to my other cars and I suspect Porsche set it up that way on purpose.

[Dave W.]

I tried the Racers Edge solid replacement for the #12 bushing and I didn't like it on my street car. It made no difference in vibration-type noises. The main drawback was that it transmitted a loud thump sound whenever I hit a large bump or any sharp edged bump, such as the lip on a driveway entrance.

[j1nx3d]

I've been looking at going solid on those parts for some time. From what I've read they are streetable. I can tell you that part #12 was solid on the 944 Turbo Cup cars and made from cast aluminium.

[Latitude48]

I tried the Racers Edge solid replacement for the #12 bushing and I didn't like it on my street car. It made no difference in vibration-type noises. The main drawback was that it transmitted a loud thump sound whenever I hit a large bump or any sharp edged bump, such as the lip on a driveway entrance.

I can understand the thumping sounds as my S2 has Racer's Edge spherical camber plates up front and the Koni 3012s in the rear have spherical mounts. I don't notice any issues with vibration but with my 18" wheels and tires you do get impact noise. Guess I'm used to it now.

[Latitude48]

... From what I've read they are streetable...

Any recollection of where you might have read this?

[Dave W.]

I tried the Racers Edge solid replacement for the #12 bushing and I didn't like it on my street car. It made no difference in vibration-type noises. The main drawback was that it transmitted a loud thump sound whenever I hit a large bump or any sharp edged bump, such as the lip on a driveway entrance.

I can understand the thumping sounds as my S2 has Racer's Edge spherical camber plates up front and the Koni 3012s in the rear have spherical mounts. I don't notice any issues with vibration but with my 18" wheels and tires you do get impact noise. Guess I'm used to it now.

If you'd like to try them out I have a pair for sale that I'll sell at a good price. The anodized coating has rubbed off in a couple spots from pressure on the load bearing points but otherwise are in great shape.

944 torsion carrier.jpg (720.92 KiB) Viewed 1655 times

944 torsion carrier 2.jpg (762.18 KiB) Viewed 1655 times