Trailing arm re-inforcement.

[BeirBrennerE30]

BeirBrennerE30 - do you have any information on these? reason for the inner point being stock unlike the outer mounting points on the trailing arms for example. I just emailed this picture to a friend of mine running in SM to check if this would be legal in the class I a race in. Where did you find these or are these yours?

Yeah those arms are form a guy in s14.net and thay are basically clones of the gen1 e30 m3 dtm rear arms. They arent finished yet and the inner joint was replaced with a heim. its independently adjustable for camber and toe without changing roll center on the outboard mount. The guy has a subframe too that has the built in roll center adjustment on the outer pick up and it was also modded to fit an e39m5/e46m3 diff and to use the m5 drive shafts.

in the front the arms are adjustable for track, camber(resumable with the strut tops), caster, dive(anti or pro), bump steer(adjustable tie rods) and roll center(with spacers). The rear pickups are reinforces with a third mounting point and the inner ball joint was recessed into the subframe an mounted in double shear.

With a nice set of moton or ohlin dampers this is probably the ultimate e30 suspension. Zero friction joints and tons of ajustability. only way to improve would be to ditch the rear trailing arm setup for something else crazy

[Jean]

That's sick!!! Got a link to his car build by any chance? I would love to check it out.

[BeirBrennerE30]

no i dont... but it has a twin turbo s62 in it...

[Jean]

Jebus! I was just out autocrossing this past weekend and the Edge e36 was out there with the s54 swap and the trick wing that adjusts it's angle depending on the car's movement (acceleration vs. breaking vs. cornering) and was just thinking how crazy an e30 would be with an s62.. ahh dreams.

[el bob]

I wonder how he makes sure the arms don't deflect/warp while welding. The TIG work there is not difficult, it's the precise alignment that makes it worth $2000 and $1000. I wonder what he does :)

[BeirBrennerE30]

I wonder how he makes sure the arms don't deflect/warp while welding. The TIG work there is not difficult, it's the precise alignment that makes it worth $2000 and $1000. I wonder what he does :)

jigs... thats why he is making more. recoup some of the money it took to make the jigs