Welding a backstop for the 911 e-brake mod, concerned about distortion Options

[ss6]

The trailing arms are back on the car after Chris Foley worked his magic "de-ovalling" the inboard pivot tube ID's. (Distortion probably due to factory welds, and probably another reason to *not* box the trailing arms).

The second part of my project was to apply the 911 e-brake mod. This mod requires some sort of "backstop" for the brake shoes to bottom against when applied. On a 911, this backstop is part of the trailing arm itself. Some of you guys have welded a backstop onto the e-brake backing plate, but I don't think that is strong enough for the forces possible.

I was going to weld a backstop onto the trailing arm itself, but with my pivot tube experience am now concerned that welding something about even with the caliper bosses might distort the wheel bearing housing making it difficult to remove / replace the bearing.

Any comments or guidance on this???

[blabla914]

John,

Ah, now I know exactly what you are talking about. I have a box kit in the attic and I'm familar with what happens when you try to weld relatively thin sheetmetal. The tube wasn't the first area that I was worried about distorting, but now that you mention it, I definately see where that could be a problem.

Your car says 914 2.0+ on the back right? Nice touch.

I don't see anybody around here drive 914's at all. Mine and Walt's are often the only ones at PCA autocrosses. You'd think they would come out for autocrosses. Much to the dismay of my fellow PCA'ers I still haven't done any PCA DE's yet eventhough I've done some track with other groups. I'm just getting my car back together after doing the motor. I hope to start it this weekend. If the thing doesn't blow a gasket after a couple of autocrosses I'll be at the track.

If you see a white 914 with black trim, cookies, and a sport muffler on the road, that's me. I drive it everywhere.

Kelly