E90 Track Build - Custom Roll Bar/Brake Ducts/Sunroof Delete/Mode Carbon GTS Lip

[evilspiritM3]

My E90 has been slowly building over the last 5 years towards this stage of dedicated track car, and I spent the last two days pulling out a large part of the interior in preparation for a weld in roll bar installation.

It is amazing how much material there is in these cars, and it will be interesting to see how much weight is lost. I have left the wiring largely intact, and will parse that down as I sort out what is necessary and what isn't. The sunroof continues to be difficult to eliminate, and I may just pull it out and build my own form for a carbon sunroof insert.

I did a lot of work in the 2015 timeframe and the car didn't change much after that. So I'll call that Phase 1. I've started Phase 2 this year to build out a NASA ST3 / TT3 car. Most of that starts on page 3 of this thread.

Modifications (as of 8/1/2020):

-MCS 2WNR Dampers with 700/900lb Springs
-Alcon CR6420 (front) l CAR4949 (rear) BBK w/ PFC 01 l PFC 332 Pads
-Custom aluminum brake duct backing plates
-Turner Aluminum Rear Subframe and Delrin Diff Bushings
-Remus Race Mid Pipe (no cats/resonators)
-Bimmerworld Race Exhaust
-Bimmerworld Front and Rear Aero
-Bimmerworld carbon headlight inserts
-18x10 Apex w/ BFG R1s & Pirelli DH Scrubs
-BPM Stage II Tune
-Voltphreaks Lithium Ion Battery
-CAE Race Shifter
-Diffsonline 4.10 3 Clutch Diff
-Racetech 4119 Seat and Schroth 6 Point Harness
-Custom (DIY) carbon sunroof insert

[socrates42]

I'd love to see pictures of the roll bar installation when its done! nice build

[SYT_Shadow]

I can't see any pics

[evilspiritM3]

Originally Posted by SYT_Shadow

I can't see any pics

fixed

[M3 Number 86]

How do you subscribe? This is what I plan on doing to and this would be great reference!

[SYT_Shadow]

Beautiful build

I also have started on my E92. Plan to get the 2WNR later this year, just got the pfc bbk which is awesome

[Properstyle]

what was the weight after pulling evething out thus far?

[evilspiritM3]

Originally Posted by Properstyle

what was the weight after pulling evething out thus far?

I'll weigh it again today and will post the photo. Cage should be complete by the end of the week, so more updates then as well.

[BobS]

Thats awesome.... interested to see what the weight is now after stripping all those parts.

[DB]

This is great. I am making the same transition with my e90 and have been searching cage options (I'm temped to do a half cage so that the car remains somewhat more streetable), but I haven't found much info available for the e90. I'm very interested to see how your BPC cage turns out.

[evilspiritM3]

Originally Posted by DB

This is great. I am making the same transition with my e90 and have been searching cage options (I'm temped to do a half cage so that the car remains somewhat more streetable), but I haven't found much info available for the e90. I'm very interested to see how your BPC cage turns out.

I should get an empty weight early this week, and the work should be complete around the 26th or 27th. I went with the half cage primarily so I could still reasonably drive it to and from the track.

I think the only way to go with the sedan is a custom build- there just does not seem to be enough of a market right now for vendors to build track specific equipment for the E90s. To that end- BPC is pulling out the sunroof cassette and I am taking the plunge on making my own CF panel.

[CSBM5]

You could always just order a non-sunroof panel from BMW for ~$900, and removal/installation shouldn't be too bad.

[SYT_Shadow]

A question, the weight in the first post is with the arc8 wheels, etc or is it bone stock? How much fuel?

[evilspiritM3]

Originally Posted by SYT_Shadow

A question, the weight in the first post is with the arc8 wheels, etc or is it bone stock? How much fuel?

Weight is with all mods listed (vice EC-7 wheels- I have a set of Volk TE37 18" fitted for the street w/ Hankook RS-3s), full interior and half tank of fuel.

[Cloud9blue]

Nice, but you may find PFC01 compound a little too much for street tires and low end of R compounds tires. I would move go with full slick, given your current suspension setup.

[ortho281]

Very nice! Good Luck with build!

[evilspiritM3]

Stopped by BPC today to drop off the harness and pick up the sunroof cassette to start the build of the CF insert.

BPC weighed the car at the completion of the weigh loss, and it came in at 3177 lbs. The cage will add a fair bit, but I am shooting for around 3300-3325 lbs. Project should be complete on the 27th, and I am getting the cage painted Fire Orange to match the PFC Calipers.

The cage build continues- here are some updated photos:



fabrication:

[TZANIDO777]

May I ask what/ how you're building the CF insert? I am in the same position as you with closing up the sunroof area in my 135. Will you be purchasing a kit or sourcing all the materials seperately to build a mold to lay the carbon fiber inside of or?

[LittleBlueBMW]

I will gladly take that parcel shelf cover off your hands if it is not faded. My 2010 one is purple!

Good build so far!

[duvinclunk]

Excited to see the progress here! Nice job so far.

[evilspiritM3]

A few more shots- welding is complete and it is going to paint later today.

[w0ady]

Very cool.