E86 Front Triangulation Braces Retrofit

[karter16]

Why not just insert the helicoil and cut a threaded rod. On my carbon part, I molded threaded inserts and then used an M8 class 8.8 threaded rod cut to length. Loctite on the end that goes into the bracket.

With the caveat that I'm not really the appropriate sort of engineer and didn't FEA it, this was my original plan, but I got a little sketched out about the thread depth available given the size of the part (bearing in mind in my case the part is aluminium) and thought that Heinz's approach of having an insert that couldn't pull through seemed better to me.

[karter16]

Are these the studs in question? M10x1.5x20 and M10x1.5x30 from MRO?

https://mrohardware.com/product/m10-x-1-50-high-torque-studs-sfhh00m1020d/

https://mrohardware.com/product/m10-...-sfhh00m1030d/

Yep those are the ones

[heinzboehmer]

Added the weight of the stock cabin air filter housing to the documentation (thanks OldRanger for weighing yours!).

Here's a screenshot of the data:



Looks like with the 3D printed strut tower brackets, this mod results in a net 909g (2lbs) weight reduction over the stock parts.

I haven't done the math, but just by eyeballing, it looks like the car's center of gravity will drop by a little bit (most of the weight savings come from the replacement HVAC plastics) and likely not move very much front to back (E86 braces are out front and windshield mount is out back)