So while the S52 head is at the machine shop getting worked I'm ordering various parts prepping for different mods and maintenance. As mentioned earlier, this car is going to have the same Massive BBK race kit front/rear that I had on my E30/M52 racecar. I purchased an install kit from another forum member and now will just need to get calipers, pads, and rotors. I'm kicking myself for giving all of my spare rotors and pads to the new owner of my racecar! But, at the time I had no idea I would be going in this direction for brakes.

For those of you that aren't familiar with this kit, it uses 11.75" x 1.25" vented rotors all-around that are floating in the fronts. I'll be using Wilwood 4 piston Superlite calipers front and rear that share the same pad size. The awesome thing about this setup is that you can rotate pads and rotors from front to rear to maximize life if you like.
The other significant part of the brake upgrade as mentioned earlier is my switching to an ix booster with an E34 M5 (E32) master cylinder. Recall that I had been looking for the original connector tube for the booster since my reman one didn't come with it. I searched far and wide and could not find anyone who had that one little part to sell, so I ended up having to pony up for an entire booster assembly from a salvage yard 735iL just to be able to get the connector. Fortunately they cut me a deal and I was only out $70 for the booster plus shipping. After receiving it, I decided that it looked pretty good and that it would be worth testing as-is. If this used booster turns out to work fine, I'm going to return the reman since I have no need for 2 of these things!

I'll be using a 2002 remote reservoir setup since I will be installing with the connector tube. I had received all of the parts I needed (so I thought), including my new (used) ix booster, new reservoir, brake hose for remote setup, and elbow connectors to be placed through the grommets at the top of the master cylinder.

Unfortunately, I ran into an issue. The elbow connectors were way too small to fit with the grommets on the M5 master cylinder.

So after doing a bit of research I discovered that the 22mm version of the 2002 master cylinder grommets could be used successfully. For those of you also running into this issue, the part # of the grommet you need is 34311121911. (Thanks G22 and HertE30)

The bad news was that I couldn't install and test my new booster setup this past weekend, but at least I knew what I needed to order. :) I will resume that project later this week after the grommets come in.
Oh yeah, also got in my new head gasket kit, head bolt set, and non-return valve which will patiently await the return of my cylinder head.









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