Cone Washers

Heim Joint.png

The suspension uses 36 Heim joints (a.k.a., spherical rod ends or rose joints). For 28 of those instances Superlite provides two aluminum cone washers and four grade 8 washers to mount each Heim joint (see the "Before" picture below). The cone washers allow the ball to rotate to a large angle without the case binding in the mounting bracket and the grade 8 washers take up the remaining space between the cone washer and the mounting bracket.

It's a simple but exasperating process to get everything lined up so that you can slide the bolt through, particularly if you're doing it by yourself. The bolt is a tight fit in the bracket and ball swivel holes (a good thing) and the diameters of the grade 8 and cone washers are different. 

I've taken these assemblies apart many times and I finally decided to improve things. I had Agile Automotive Performance make a set of custom cone washers. They have the following benefits:

  • They're a dream to install, no %@#! profanity required
  • They look great
  • They're a lot lighter
  • They allow the ball to rotate to a greater angle without binding; I'm not sure if that's useful in my case, but it certainly doesn't hurt

The weights in grams of the before and after assemblies are as follows:

  • 5/8" bolt: 80 vs. 10
  • 1/2" bolt: 46 vs. 12

So what does that amount to for the whole car? Approximately 2,096 grams (4.6 pounds) which is negligible. That said, the primary reason I made the change was to make assembly easy.