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02-20-2013, 10:29 PM | #1 |
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Sub 3300 pound winter weight loss results.
A while back, you may remember this happening after a weekend at Thunderhill in the 'safety' of my garage...Well the winter project(s) started:
Weight loss and handling was the name of the game, so the dinted sun-roofed roof etc meant an OEM Carbon Fibre replacement was in order. Attachment 822229 Since the rear glass was broken anyway, out comes the front windshield in order to remove the roof. Fantastic service from Precision Auto Glass in Portland, and they got it out in one piece to retain for later! Attachment 822237 headliner out, removed entire sunroof cassette, roof air bags. Easy. Attachment 822238 At this point the cutting started. The early posts from IND showing the procedure on E90 conversions helped as did getting the right tools. The $4.99 spotweld-cutter bit from Harbor Freight was unbeatable! All spot welds removed, a good seam splitter and patience worked great. I did protect all roof molding with tape and a strip of steel tape measure in between as addition protection in case the drill slipped, which it did once. Attachment 822239 Same thing all the way around. In total about 70 spotwelds were removed Attachment 822240 Off it came. No problems Attachment 822241 Clean. Attachment 822242 Tried this out for size (BW V1)- borrowed from Greg and Eddie at AR Auto Service in Portland for their E46 build. I am going bigger...likely the APR GT250 Attachment 822243 A present from Germany. The biggest PIA was the wait. What was quoted as 7-10 days ended up 7 weeks. Attachment 822244 Roof Bow purchased and put in (comes only on non-sunroof/CF roof cars). Attachment 822245 OEM fits like a glove. Worth the wait. Attachment 822246 OEM BMW specific adhesive. There are others out there, but with the heat and flex expansion needs, OEM is good piece of mind. Attachment 822251 Job done. Fully cured in 24 hours. New black trim and sharks fin painted gloss black. Glass back in. Attachment 822252 Here in the NW we are lucky enough to get some short-notice good weather track days, so off to The Ridge Motorsports Park in Washington for a post hibernation few runs. The difference in handling and performance was night and day. All in, I took out just shy of 300lbs from stock. Car feels so nimble versus last season. Took off 2 seconds and wasn't really trying this first outing. Attachment 822253 This is a pic from last year. All rear trim is out now. Attachment 822254 Now for some noise, and hopefully a few more ponies for the next track days. I have to say it sounds fantastic and zero drone. Attachment 822255 Catless GT4 midsection. 10 pounds lighter too... Attachment 822256 Replaces the Evo section, which i will keep for noise limit tracks. Attachment 822257 Clean. Fantastic engineering. Attachment 822258 New Bimmerworld 'race' control arm bushings Attachment 822259 Dinan R Toe Links and full track alignment. Attachment 822260 Stole the wife's MCS battery. Will be registered, but no issues so far. Attachment 822261 This was no driver, 1/4 tank of fuel. My goal was under 3300. Very happy. Slight weight distribution change was unoticable, with no increase in understear. Weight is our enemy on track. Just need to get a latest catless tune from Mike Benvo and try the new set-up in a few weeks. Videos to follow then. Aero soon after... Really happy with the results so far. Love the E9X M3.
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DCT. Custom Cantrell MS cage. Fire, SCCA, dedicated track. Diffs-online 3.62, diff cooler, MCS 2-ways, SPL arms, TMS solid SF/Diff bushings, RD sway, DO88 Coolers (DCT, RAD, PS, OIL) Akra catless GT4, BPM tune, Hans Recaro, AP Pro 5000R, Cobalt XR2/4 race pads, BBS E88's, Yoko A005 slicks, RKP GT4 Splitter, GT4 canards, APR GT250 Wing, CFK Hood, Flossman CFK fenders, BW carbon doors, Dinan R toe links, Mini battery.
Last edited by NRBRNG; 02-20-2013 at 10:49 PM.. Reason: lost images |
02-21-2013, 05:15 AM | #4 |
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Awesome!!
I plan to put an M3 CF roof in my car this summer. How much is the weight difference exactly? Do you have the part number for that roof bow? Thanks in advance.
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Performance Seats, Exhaust, Splitters, Pedals, Steering Wheel / RB Turbos / M3 CF Roof / Brembo GT BBK 355/345 / Rollcage / Forge FMIC / Quaife LSD / Öhlins Road & Track / M3 Suspension Parts / Solid Subframe Bushings / Vorshlag Camberplates / Megan Racing Toe Links / LeatherZ Gauges / Extended M3 DCT Paddles / ER Sports OC / AR OC / Aux Radiator / AR DPs / Alpina TCU / COBB Pro-Tune
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02-21-2013, 07:26 AM | #5 |
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Drives: 2011 M3 Jet Black:ZCP, ZCV, ZP
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What seats are you running?
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02-21-2013, 01:04 PM | #7 |
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Drives: BPMsport 2012 E92 M3
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Very cool.
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02-22-2013, 09:42 AM | #8 | |
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Sunroof to cf roof is a net 61 pound saving. Airbags were another 10lbs or so ( only if running race seats/cage/harness).
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DCT. Custom Cantrell MS cage. Fire, SCCA, dedicated track. Diffs-online 3.62, diff cooler, MCS 2-ways, SPL arms, TMS solid SF/Diff bushings, RD sway, DO88 Coolers (DCT, RAD, PS, OIL) Akra catless GT4, BPM tune, Hans Recaro, AP Pro 5000R, Cobalt XR2/4 race pads, BBS E88's, Yoko A005 slicks, RKP GT4 Splitter, GT4 canards, APR GT250 Wing, CFK Hood, Flossman CFK fenders, BW carbon doors, Dinan R toe links, Mini battery.
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02-22-2013, 09:43 AM | #9 |
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DCT. Custom Cantrell MS cage. Fire, SCCA, dedicated track. Diffs-online 3.62, diff cooler, MCS 2-ways, SPL arms, TMS solid SF/Diff bushings, RD sway, DO88 Coolers (DCT, RAD, PS, OIL) Akra catless GT4, BPM tune, Hans Recaro, AP Pro 5000R, Cobalt XR2/4 race pads, BBS E88's, Yoko A005 slicks, RKP GT4 Splitter, GT4 canards, APR GT250 Wing, CFK Hood, Flossman CFK fenders, BW carbon doors, Dinan R toe links, Mini battery.
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02-22-2013, 09:50 AM | #10 |
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Drives: E46 + E90 + F80
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Amazing transformation! I can imagine the HUGE diet to have made a difference.
Not sure if you're able to tell or not, but did you notice any change in NVH with the BW Race Control Arm Bushings?
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02-22-2013, 09:15 PM | #13 | |
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No difference on the road- have only just brought it from the shop and not used on the track yet. Main point is for entry turn-in and braking stability on track.
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DCT. Custom Cantrell MS cage. Fire, SCCA, dedicated track. Diffs-online 3.62, diff cooler, MCS 2-ways, SPL arms, TMS solid SF/Diff bushings, RD sway, DO88 Coolers (DCT, RAD, PS, OIL) Akra catless GT4, BPM tune, Hans Recaro, AP Pro 5000R, Cobalt XR2/4 race pads, BBS E88's, Yoko A005 slicks, RKP GT4 Splitter, GT4 canards, APR GT250 Wing, CFK Hood, Flossman CFK fenders, BW carbon doors, Dinan R toe links, Mini battery.
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02-22-2013, 09:26 PM | #14 |
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nice to see you out there at the ridge and good to see this CF roof install. i may be looking to you for help if i decide to go this route also. congrats on the car. hoping to get mine to the 3400 lb range at some point.
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02 Tiag e46 M3|6MT|GC plates|MCS c.o.|GC bars|GC race control arms|GC bushings|BW eng. & tran. mounts|subframe kit|BW race shifter|BW Jaffster|Euro header|BW exhaust|K&N c.a.i.|Epic race tune|Rouge pulleys|Seibon CF hood|CSL bumper|apr gt 250 & splitter|ST-40|XR-2|SS lines|half cage|Recaro profi|Profi 2 harness|BMWpedals|BW studs| |
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02-23-2013, 08:06 AM | #17 |
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Such a well setup car! Sold my M3 to a friend who just had a bar and harnesses installed and it is amazing. I am now driving a .2 GT3RS which is a whole new experience for me. Hope to see you at the Ridge soon.
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02-23-2013, 09:23 AM | #18 | ||
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mods: track ready stuff
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02-23-2013, 09:43 AM | #19 | |
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i didn't actually weigh it. Likely close to your fantastic GTS build before you started, plus sunroof. BTW, please pm me on the GTS splitter and (real) availability. I am about to press the trigger on the front and rear aero...Tx
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DCT. Custom Cantrell MS cage. Fire, SCCA, dedicated track. Diffs-online 3.62, diff cooler, MCS 2-ways, SPL arms, TMS solid SF/Diff bushings, RD sway, DO88 Coolers (DCT, RAD, PS, OIL) Akra catless GT4, BPM tune, Hans Recaro, AP Pro 5000R, Cobalt XR2/4 race pads, BBS E88's, Yoko A005 slicks, RKP GT4 Splitter, GT4 canards, APR GT250 Wing, CFK Hood, Flossman CFK fenders, BW carbon doors, Dinan R toe links, Mini battery.
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02-23-2013, 09:47 AM | #20 |
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Thanks Carl. I showed up late and missed you a few weeks ago. Hope P car is working for you. Catch-up soon at the Ridge as I would love your perspective on the two. I am waaay too far in on the M though...
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DCT. Custom Cantrell MS cage. Fire, SCCA, dedicated track. Diffs-online 3.62, diff cooler, MCS 2-ways, SPL arms, TMS solid SF/Diff bushings, RD sway, DO88 Coolers (DCT, RAD, PS, OIL) Akra catless GT4, BPM tune, Hans Recaro, AP Pro 5000R, Cobalt XR2/4 race pads, BBS E88's, Yoko A005 slicks, RKP GT4 Splitter, GT4 canards, APR GT250 Wing, CFK Hood, Flossman CFK fenders, BW carbon doors, Dinan R toe links, Mini battery.
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02-25-2013, 02:52 PM | #21 |
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Nice work. Can't wait to catch up and see the updated beast. No hope to even try to keep up with you anymore though :-(
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03-01-2013, 09:59 AM | #22 |
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Goes to show that it can be done. Biggest issue with our car is weigh indeed. With good driving skills, weight becomes the biggest issue, not unstable hp. Love the project. I don't see florpan, harness hanging etc as previosly suggested that the car would be compromised (hard to live with?) if "gutted". Noticed some of the fully gutted cars at NASA events having to add weight to make class prior to race events. You've done an amazing job. Absolutely love it. About the Porche GT3 weight neighbourhood now.
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