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  • 7 months later...
  • 2 weeks later...

Tomorrow is clutch day! Taking the Z to a friend's shop to use his 2-post lift to knock it out before the salt flies. 

Finished up installing parts on the spare transmission. It got all new detents, new slave cylinder, SS braided clutch line, shift fork pin & spring, shift rod joint, UUC DSSR, shift bushings and Redline MT-LV fluid. 

Will be doing the rear main seal, JB racing lightweight flywheel, M3 pressure plate & spring hub clutch disc with new throwout bearing and pilot bearing as well.



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Job is done and very well worth it! Didn't get a whole lot of pics, but got a few. First drive home makes me not want to put it in garage for winter yet. Lol. Revs like a son of a bitch and shifting is very smooth with new detents. 

I did screw up and bought the wrong DSSR. The one I got was for the e36, thinking it was the same. Well, the Z3 shift arm is almost twice as long as the e36. Had to reuse the stock arm for now and will be ordering the correct one to swap in over winter. 

All-in-all I'm very happy with the result and will be tough to take it easy next spring to break-in the clutch correctly.





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  • 2 weeks later...
  • 2 weeks later...

Figured I would get the car on the lift and prepped for work this winter. Had to do some multiple up-downs with the jack and lift in order to get the tallest lift feet under it. These are needed for when I install the dssr since they give the most clearance between the lift surface and underside of car for exhaust removal and such. 

Also decided to take the wheels off and throw the Motorsport Hardware 78mm stud kit on too. The studs are too long to reuse the oem BBS screw-on center caps, but that's not a problem.

I have something planned for different center caps that involves the 3d printer for mock up and test fitting. Stay tuned!


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  • 2 weeks later...

Took some measurements of the OEM center caps and drew something up in TinkerCAD. 


Getting the threads correct was the hardest part. Nice thing about McMaster-Carr is that they have the CAD files for every part they sell. Once I figured out the thread pitch I found a bolt on McMaster that matched and pulled it into TinkerCAD. 

Worked like a charm and fits perfectly!





Now I'll be able to run these wheels with the Motorsport Hardware stud kit installed.

Gotta figure out if I want to get these wheels refinished this winter too 🤔 

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  • 2 weeks later...

And just like that, goes from 3D printed plastic to machined aluminum. 😁




I was about to call up some machine shops, but ended up finding a company called Bimmertune out of Lithuania. They already sold the custom centercaps for BBS RC wheels at a very nice price. Free shipping was incredibly fast as well. Some new domed BBS center cap stickers are on their way as well.

I also picked up a throttle body adapter plate from them while I was at it.


It's to mount the M52TUB28 throttle body to an M54B30 manifold. I have the B30 manifold on the shelf already and hear it's great gains up top without affecting the low end torque for the TUB engines. That will be a project for when I feel very confident, lol. 

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