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Shameless plug here - I make custom parts and focus on the racing community for projects like this. I've made some pretty nutso complicated TB adapters with bent passages and ORB ports and whatnot, and I've even made some IAC housings recently. Prototypes, one-offs, and small runs of parts are...

For the passive steer in the rear, it's worth considering what happens when the system sees that lateral load and how different bushings stiffness can influence that behavior. It comes from both geometry changes and bushing deflection. It may do something in the air on stands that could be...

Yays. Nice thread! Not many people go through the effort to measure all of this but it really helps in understanding where not to set things. Where to set things is forever a subject of debate and ever flawed data analysis (lol). I will say that measuring bump steer like this can be done...

If it's aligned and you got the bolt tight, run it. Plenty of us running them like that, lol.

If there's a CAD file for the brackets, I can make them.

The head gasket can be put on backwards and allow it to spew oil from the center galley on the front of the engine (under the intake).

Nope, we put a pause on racing this year so I probably won't try it out until next season.

Still in the car, but not racing this year due to life. No complaints.

It's a single piece - I think the discoloration is leftover from the heat treat process. They likely heat treat it, then finish grind the bearing race. With that said, I'm not considering reproducing a part similar to this. The integrated bearing race is a no go for me. I think replacing the...

Yeah, that's exactly what it is.

Got it all apart - It is the end of the hub that's rolled over to capture the bearings and probably provide some preload: Into the press: And all apart:

Yeah, I just finished cutting it. Headed into the press now. Pictures in a bit!

Got the hub in. These are pretty fun. It looks like the hubs are inserted into the bearing housing, then I'm not entirely sure what the piece is on the backside (towards interior of car). Massive pressed plug or the hub itself is formed to capture the bearings. So to pull the hub apart, I'll...

What's your car pull for lateral G's, and what rear tire size are you running, and what's the weight and weight distro of the car right now? We need to math out the force the hub is seeing.

Yeah, I wanted to see a good one just to make sure it's manufacturable in my CNC - it is. I can't tell from the broken hub pic of where exactly the break is occurring - But it looks like that's just a cast steel piece that's been finish machined in a couple spots. I think making it 1-piece...

That's within reason to make, especially since an axle doesn't go through these (no broaching splines). If there's a small market for them, I'm in. @gotovato do you have a good one handy?

Yep

When the slave goes bad, it will leak fluid. I think the slave is OK in this case. The master, though, I think you're headed in the right direction @syzygy. I've had several go "bad" where the internal O-ring on the piston gets chewed up over time and fluid gets past. It's all internal to...

No, I've never heard of this happening and I've been into the platform since 2009. That's wild.

Can you turn it lock to lock?