Retrofit M3/M4 strut brace to F2* chassis

This section shows how to carry out modifications to your 1 Series. Please remember that if you are modifying your car to take photo's at each step and document the mod in here.
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bluebro
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Retrofit M3/M4 strut brace to F2* chassis

Post by bluebro » Mon May 30, 2016 11:34 pm

1. Remove passenger side cowl cover using 10mm socket, a quarter turn releases each tab. (3 tabs)
Repeat for drivers side.
*****Tape up battery + post to avoid any mishap.*****

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2. Remove expanding rivets (4) and remove passenger side wing trim panel.
Repeat for drivers side.

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3. Remove both blanking plugs from the windscreen cowl.

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4. Remove both central torx bolts.

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5. Remove passenger side strut top cover by removing the additional expanding rivet located behind the small wiring cover.
Repeat for drivers side. (no additional rivet)

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6. Remove bulkhead rubber seal.

7. My 2014 model has 3 bolts around the strut top, BMW changed this design during 2015 at some point to 5 bolts around the strut top, please bear this in mind when ordering any parts.

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8. Remove passenger side strut brace torx bolt.
Repeat for drivers side.

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9. Remove the heavy and not so pretty steel brace.

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10. Shown are the parts required for a full retrofit not including the front landing panel as I already had this fitted prior to taking pics.

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11. Start by removing the standard strut top mounts, I have lowering springs fitted so didn't require spring compressors. I removed the anti-roll bar drop links and dropped the shock absorber down enough to allow room for the strut top mount to come out.

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12. New 2014MY M3/M4 top mount fitted.

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13. Fit both top mount stiffener rings and new bolts without the spacer attached.

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14. Remove rubber grommet from passenger side inner wing and fit blind rivet nut (51718065070) into the hole. Tightening a bolt into it allows the rivet nut to grip the inner wing and become a permanent feature.

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15. Repeat for drivers side.

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16. Depress clips and remove brake servo vacuum hose from bulkhead.

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17. Place up onto windscreen.

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18. Unclip vacuum hose from attaching clip near wiper motor.

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19. Remove attaching clip and rotate 180 degrees.

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20. Lift aluminium strut brace into place by sliding under passenger wing first and moving toward drivers side to sit centrally in place.
Attach to strut tops using 6 torx bolts (3 per side)

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21. Attach torx bolts to blind rivet nuts.

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22. Refit previous central torx bolts.

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23. When happy with position tighten all bolts.

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24. Clip vacuum hose back into holding clip.

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25. Clip vacuum hose back into bulkhead.

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26. Attach extension rod to aluminium strut brace at both sides. (optional)

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27. Attach side rods at both sides. (optional)

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28. Aluminium brace and extension rods in place, now to the front panel.

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29. Unbolt existing landing panel and transfer the parts over to the new reinforced panel all except for the locating pin for the air intake.

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30. Leave the rubber bung in place as the carbon brace will rest on this.

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31. Place the fabulous looking and extremely light carbon brace into position and bolt in place.

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32. Now for the tricky part, to make it look like a factory option. Trim the wing panel neatly to allow fitment over the aluminium brace and extension rods.

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33. And for the drivers side.

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34. Refit passenger side trim.

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35. Refit drivers side trim.

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36. Remove portion from the drivers side cowl panel to allow fitment over the carbon brace. The battery post door also needed a small trim.

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37. Both cowl cover legs required to be trimmed down to 35mm in height.

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38. Refit both windscreen cowl plugs.

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39. Fit passenger side strut top cover and cowl cover.

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40. Fit drivers side strut top cover and cowl cover.

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Stand back and admire your handywork.

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Clearance of the carbon brace to air intake rubber bung.

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Clearance of the carbon brace to the coolant reservoir.

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Clearance of the carbon brace to the air filter housing.

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scrounger
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by scrounger » Tue May 31, 2016 6:01 am

Looks amazing.

Total cost?
Previous: MG F20 125i MSport, Manual, Xenons, Interior Comfort Pack
Now: AW F20 LCI 120d MSport, Sports Auto, Black Panel Display, Ferric Grey Alloys, Sun Protection Glass, Strut Brace, K&N Air Filter, H&K Tweeters and Mids

Blind Pugh
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by Blind Pugh » Tue May 31, 2016 6:49 am

Good work and a great write up.

Noticed any difference ?
Fettled M135i EB AT - gone but not forgotten !
AW M2 DCT

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rusty13
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by rusty13 » Tue May 31, 2016 7:39 am

Looks f.ucking amazing. Bet it cost a packet tho!
M135i Estoril Blue - 5 Door - Manual
Image

Alexx
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by Alexx » Tue May 31, 2016 8:48 am

Amazing! Lovely detail! Handling/feeling improves?
F21 - BMW M135i - Noisemaker ^^

ER Catless - OEM backbox with Bypass -midpipe delete - Endless M20 pads- Bilstein B16 - M4 Control arms - OZ Ultrallegera  - Mperformance stuff - OS Giken LSD - JB4 st 2 -FMIC Intercooler - ER Chargepipe

bluebro
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by bluebro » Tue May 31, 2016 9:37 am

I'd definitely say the front end feels tighter, might go for M4 LCA's next.
Keep an eye on eBay for parts but as you can imagine the carbon piece is where the money's at. (£850 new from Cotswold)
I don't mind spending my money on my cars, it makes me happier than alcohol or cigarettes or golf course fees.

seanklein
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by seanklein » Tue May 31, 2016 12:04 pm

I'm a big fan of this! Well done buddy, big balls taking the plunge on this mod. Did you know it would all fit?
BMW 135i N54 - GTX3582R Single Turbo.
Dyno numbers..
Twins - 495hp 574 ft/lbs @ 19 psi (5000rpm)
Single - 587hp 520ft/lbs @ 20 psi...To the redline! :twisted:

bluebro
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by bluebro » Tue May 31, 2016 12:33 pm

Thanks mate, yeah I was pretty sure after seeing the M235i Racing engine bay.

My only concern was getting the plastic trims looking right for that OEM look.

Mr Kirk
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by Mr Kirk » Tue May 31, 2016 6:29 pm

Could you put together a full list of parts and part numbers?
Or is this asking too much :D

bluebro
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by bluebro » Wed Jun 01, 2016 1:01 am

I'm pretty sure I could add those when I get time.

bluebro
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by bluebro » Wed Jun 01, 2016 1:41 pm

Image

4' F82 M4 M4 Reinforcement for body, front

01 Strut, CFRP, front end M3/M4 51618061631 X 1
02 Strut brace 31122284856 X 1
03 Extension, strut tower brace, left 31122284857 X 1
03 Extension, strut tower brace, right 31122284858 X 1
04 ROD LEFT 31122284859 X 1
04 ROD RIGHT 31122284860 X 1
08 Hex bolt with washer M8X32-ZNS3 11287839136 X 6
09 Torx screw with collar ASA M8X30 31106859809 X 10
10 Fillister-head screw M10X30-Z1 07147162464 X 2
12 Torx-bolt with washer ASA M8X22 07147248303 X 2
17 Hex bolt with washer M8X22-8.8-ZNS3 22326760945 X 2

bluebro
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by bluebro » Wed Jun 01, 2016 1:53 pm

Image

4' F82 M4 M4 Hood seals

02 REAR ENGINE HOOD SEALING 51768059701 X 1
03 LEFT ENGINE HOOD SEALING 51768066661 X 1
03 RIGHT ENGINE HOOD SEALING 51768066662 X 1
06 Expanding rivet SCHWARZ 51118174185 X 4

bluebro
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by bluebro » Wed Jun 01, 2016 2:07 pm

Image

4' F82 M4 M4 GUIDE SUPPORT/SPRING PAD/ATTACHING PARTS

03 Hexagon screw with flange M10X30-10.9ZNS3 07119904141 X 6
04 Gasket 31307851700 X 2
05 Reinforcement for support bearing, left 31302285700 X 1
05 Reinforcem. for support bearing, right 31302285701 X 1
06 Guide support AUFNAHME 3XM10 31302284702 X 2

bluebro
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by bluebro » Wed Jun 01, 2016 2:42 pm

Image

4' F82 M4 M4 FRONT PANEL

01 Crosslink, front 51647294928 X 1

Blind Pugh
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Re: Retrofit M3/M4 strut brace to F2* chassis

Post by Blind Pugh » Wed Jun 01, 2016 3:24 pm

bluebro wrote:02 REAR ENGINE HOOD SEALING 51768059701 X 1
Why this part ? It looks like the CF brace pass throughs are in the L&R parts at either ends ?
Fettled M135i EB AT - gone but not forgotten !
AW M2 DCT

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