swapping a 4 lug Ls to the brembo as turbo braks - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 9 (permalink) Old 01-20-2015, 04:46 PM Thread Starter
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swapping a 4 lug Ls to the brembo as turbo braks

I'm not looking to drill rotors or anything like that, I'm not looking for a kit. I just would like to know what parts I would need to do the conversion; I'm looking to go to a junkyard find a wrecked ss and get the parts I need.
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post #2 of 9 (permalink) Old 01-20-2015, 04:56 PM
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Ahh yes the 4 to 5 lug conversion. First you will need new wheel hubs for all 4 wheels. I believe you can leave the rear drums and only have to buy new 5 lug drums for the back. Then you will need to get the calipers, rotors, and brake lines. You will need a spacer to put on the hub so the rotors will sit properly in the calipers.

---------- Post added at 07:56 PM ---------- Previous post was at 07:55 PM ----------

I will add you will need new rims all around too

2006 Cobalt LT Stealth Grey Metallic Coupe.
The current mods: ZZP shorty header, Mugen Twin Loop Muffler, American Eagle 17x7s, Nightshade Tinted Tail Lights, Custom Spec-D Headlights, SS 0-140mph Gauge cluster, Custom Made Cold Air Intake, Carbon Fiber wrapped badges, FE5 Struts/Shocks, CM/SSC Springs, SS Shift Knob, SS front bumper, SS Pioneer Sound System, Pioneer GM-A3602 Amplifier, Painted Calipers, MPX Shorty Antenna.

1969 Triumph GT6+ MK2 (350 V8 project car)
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post #3 of 9 (permalink) Old 01-20-2015, 07:45 PM
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Its not worth it IMO

Showoff thread finally!!!! : )
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post #4 of 9 (permalink) Old 01-20-2015, 09:48 PM Thread Starter
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I believe I'll start by converting to five lugs and then getting the disks for rear and front, maybe not the brembos so that I don't have to run an 18" wheel.
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post #5 of 9 (permalink) Old 01-20-2015, 10:00 PM
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Brembo's clear with a 17. If you swap to rear disc the only way is to swap the entire rear beam. As for brembo's you still need spacers check the install instructions on CED.

I'm one of the few that can say been there done that to this.




2009 Cobalt LS XFE (F23) Victory Red
YYZ V.3 Springs, Koni shocks/struts, Powell XXX rear swaybar, Brembo brake swap, 5 lug conversion, Ion Redline wheels, SS/SC interior swap including power conversion, K&N intake, Trifecta tune, Ark Performance N-II catback, Ark shorty antenna, SS body kit, Powell F23 rotated mount, LNF rear mount, Powell CABs
Soon to come- EFR 6758 turbo kit and make Retro Headlights.
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post #6 of 9 (permalink) Old 01-21-2015, 07:42 AM Thread Starter
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Could you put a link for those instructions
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post #7 of 9 (permalink) Old 01-21-2015, 08:54 PM
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This page
Brembo Brake Upgrade Kit for LSJ's BBUK
And instructions
http://www.crateenginedepot.com/pdfs/bbk.pdf

2009 Cobalt LS XFE (F23) Victory Red
YYZ V.3 Springs, Koni shocks/struts, Powell XXX rear swaybar, Brembo brake swap, 5 lug conversion, Ion Redline wheels, SS/SC interior swap including power conversion, K&N intake, Trifecta tune, Ark Performance N-II catback, Ark shorty antenna, SS body kit, Powell F23 rotated mount, LNF rear mount, Powell CABs
Soon to come- EFR 6758 turbo kit and make Retro Headlights.
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post #8 of 9 (permalink) Old 01-22-2015, 08:17 AM
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How thick is the hub spacer? Do you know off the top of your head?

2006 Cobalt LT Stealth Grey Metallic Coupe.
The current mods: ZZP shorty header, Mugen Twin Loop Muffler, American Eagle 17x7s, Nightshade Tinted Tail Lights, Custom Spec-D Headlights, SS 0-140mph Gauge cluster, Custom Made Cold Air Intake, Carbon Fiber wrapped badges, FE5 Struts/Shocks, CM/SSC Springs, SS Shift Knob, SS front bumper, SS Pioneer Sound System, Pioneer GM-A3602 Amplifier, Painted Calipers, MPX Shorty Antenna.

1969 Triumph GT6+ MK2 (350 V8 project car)
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post #9 of 9 (permalink) Old 01-23-2015, 10:34 AM
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I want to say like 3mm
Brembo Caliper Hub Spacer JPWBS

John Powell makes them, you can see how the rotor not being centered even by 3mm would be an issue though.

2009 Cobalt LS XFE (F23) Victory Red
YYZ V.3 Springs, Koni shocks/struts, Powell XXX rear swaybar, Brembo brake swap, 5 lug conversion, Ion Redline wheels, SS/SC interior swap including power conversion, K&N intake, Trifecta tune, Ark Performance N-II catback, Ark shorty antenna, SS body kit, Powell F23 rotated mount, LNF rear mount, Powell CABs
Soon to come- EFR 6758 turbo kit and make Retro Headlights.
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