New upper mounts

[Kongo-Otto]

Has nothing to do with the bearing. The rubber part is there on street cars for some good reasons, i.e. isolation (or decoupling?) and less stress for the monocoque. I don't know all the words in english. Sorry.

I had a solid mount at my Toyota Starlet many years ago. Vibrations and any other noises from the suspension and tires have been significantly louder inside the car.

You don't need comfort in a race car and you don't like the side effects of a rubber mount in a race car, too. Thats for sure. And of course a race car usually has many bars to stiffen up the body. Cusco is known for high quality parts, i had some braces from them at my Starlet. Any part was a perfect fit and had flawless engineering.

[Jason@SportsCar]

Originally Posted by Kongo-Otto

Has nothing to do with the bearing. The rubber part is there on street cars for some good reasons, i.e. isolation (or decoupling?) and less stress for the monocoque. I don't know all the words in english. Sorry.

I had a solid mount at my Toyota Starlet many years ago. Vibrations and any other noises from the suspension and tires have been significantly louder inside the car.

You don't need comfort in a race car and you don't like the side effects of a rubber mount in a race car, too. Thats for sure. And of course a race car usually has many bars to stiffen up the body. Cusco is known for high quality parts, i had some braces from them at my Starlet. Any part was a perfect fit and had flawless engineering.

I had Moton suspension with solid mounts and bearing on my daily driven RX-8, no issues what so ever. Using quality parts means a lot. Bearings have gotten a bad rap over the years because some companies use low quality parts, a sloppy or loose bearing is a great way to pick up noise. Parts that are tight and move smoothly force the shock to do its job.