The -8 is different in many ways, including the pedals. Note how the master cylinder rod is attached. It's an AN-3 cantilevered through a .125" thick tab on the pedal. It can't be tightened, as that would lock rotation when the brake was used. So, the only thing keeping it 90 degrees to the rod is the hole through the rod itself.
The combination of forces is hard on the hole in the pedal. And the material is soft; welding turned the 6061-T6 into 6061-0. So over time, the hole can get elongated..."wallered out", as we say in the South. It still works, but it adds slop to the system.
Here's an easy fix. I used a length of 3/4 x 3/4 x 1/8" 6061-T6 channel from the scrap bin. Principle is spreading the bolt bearing load onto more and stronger material, at points farther apart. A solid block 3/4" thick would also work, attached with two tapped screws where you see rivets here.
The combination of forces is hard on the hole in the pedal. And the material is soft; welding turned the 6061-T6 into 6061-0. So over time, the hole can get elongated..."wallered out", as we say in the South. It still works, but it adds slop to the system.
Here's an easy fix. I used a length of 3/4 x 3/4 x 1/8" 6061-T6 channel from the scrap bin. Principle is spreading the bolt bearing load onto more and stronger material, at points farther apart. A solid block 3/4" thick would also work, attached with two tapped screws where you see rivets here.
