|Instead of relying only on E-clips to keep your car’s hingepins in place, add a 4-40 setscrew for extra security. To do this, drill a hole in the arm mount or hub carrier (whichever part has more ‘meat’) so the setscrew will intersect the hingepin bore, and drill the hole slightly smaller than the setscrew so it will thread properly. Next, grind a flat spot on the hingepin where the setscrew pinches it, and assemble the parts so the setscrew tightens against the flat. No more lost hingepins!
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