Is my trailing arm bent??

[moatilliatta]

I think I'm seeing those big V / U shaped reinforcements causing warpage on trailing arms when people weld them in. Mcmaster car has M12 rod.

I'm not beliving that powder coating ovens warp suspension parts, maybe some wild powder theyre using.

[moatilliatta]

Reference

https://www.r3vlimited.com/board/forum/general-forums/members-rides/the-project-forum/382742-entropy-e30-hiatus-cont-more-seeing-less-wrenching?p=9971386#post9971386

[Shifty_K]

I ordered some 12mm rod to check the subframe this week.

I got a piece of pipe to check the bushing bores in the arms and it looks like they are bent outward. There is about 2mm difference in width between the arms and the pipe does not slide through both bores on either arm, both appear to be twisted in the same direction.


I it seems unlikely or coincidental that they would both be spread pretty close to the same distance and twist almost identical.



The bores should line up right?

[moatilliatta]

Interesting! I would "assume" that they shouldn't be bend outward.. I've never checked the trailing arms l like that. Good call.

Ill try and check if I got some trailing arms laying around without bushings.

Are both trailing arm bushing widths the same?


Its a sign not to use garbagistic bushings!

[Shifty_K]

Yeah it’s a weird on for sure.

The trailing arms measure 11” and 11-1/16th” wide between the edges of the inner bores.

Im thinking the most cost effective trial is oem bushings and see if that works. Otherwise I’ll get some used ones, measure, dry fit and redo the powder coating 🫠.