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135i Brembos (Same as Mini GP2s) upgrade thread.  Dump info in here! >

135i Brembos (Same as Mini GP2s) upgrade thread. Dump info in here!

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135i Brembos (Same as Mini GP2s) upgrade thread. Dump info in here!

  #26  
Old 09-30-2014, 06:48 PM
Manny_cooper
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I would think that going over 26mm on the width of the rotors would be kinda risky. It can be done, but the measurements would have to change in order to center the rotor without it grinding on the caliper.

30mm would be the widest rotor size you can use.....and not really you will have clearance issues.
 
Attached Thumbnails 135i Brembos (Same as Mini GP2s) upgrade thread.  Dump info in here!-30mmbrembodiscmax.jpg  
  #27  
Old 09-30-2014, 06:55 PM
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I think what you would do is turn down the rotors from 26.9 to 26mm to make it work.
 

Last edited by c0op3r; 09-30-2014 at 08:58 PM.
  #28  
Old 10-01-2014, 12:12 AM
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You just turn the rotors down to 26mm. But I doubt you'd need to. The 135i calipers and pads have quite a slop in them, some people have been adding multiple titanium spacers behind the pad to try to get them to stop rattling.
 
  #29  
Old 10-01-2014, 02:29 AM
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Neither DBA nor Wilwood has the rotors, Have emailed stoptech as well let's see if they have something
 
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Old 10-01-2014, 02:31 AM
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Originally Posted by MarioKart View Post
I have a well known guy that can make me two piece cross drilled. They would be 4lbs lighter a corner, but it would cost $900 for the two fronts
Does that include the hats?
 
  #31  
Old 10-01-2014, 03:21 AM
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Originally Posted by 122Vega View Post
You just turn the rotors down to 26mm. But I doubt you'd need to. The 135i calipers and pads have quite a slop in them, some people have been adding multiple titanium spacers behind the pad to try to get them to stop rattling.
The way to get rid of the rattle and clicking pads that occur with aftermarket pads is to pry off the backing plates from an original set of pads they have the extended edges that keep the pad from moving and then add the TI shims for heat control. On a new set of pads with a new rotor it's a tight fit but it canbe done. You have too use the thinner TI shims.

Aren't the GP2 rotors slotted or drilled? Hard to resurface

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  #32  
Old 10-01-2014, 03:27 AM
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Originally Posted by Manny_cooper View Post
B) Teaser! Don't know if I should paint... they are in really good shape.
What part number is on theses brackets? I have too unpack mine too look.

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  #33  
Old 10-01-2014, 05:14 AM
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Originally Posted by Drivehard View Post
What part number is on theses brackets? I have too unpack mine too look.

Sent from my iPad using NAMotoring

I'll have to wait to get home to find out the part # in the bracket for the 135i Brembos. But they are nowhere to be found online either, I was searching last night.

On the rotors size:

What I was thinking is that once the caliper is set in place:

If the rotor is bigger and has a different offset (depending on the brand), would it create friction?

I remember doing this on my old 350z, I adapted some wilwood brakes and created the bracket myself...but from wilwood I had all the drawings and measurments needed.

On the other hand, I'm still waiting on Brembo to respond to my inquiry.


Keep posting guys, thoughts, ideas and anyhthing you may want to add.

BTW, I also talked to Todd at TCE Brakes in AZ and he said that he could develop the brackets as long as he has a rotor, the caliper and the pads on his hand. He will charge a $200 engineering fee and obviosly the material cost. He can also machine a couple of them. Just an idea.

But I doubt we would have to reingineer far away from the 135i caliper adapter, its just a matter of repositioning the holes for the bolts to adapt to the mini.
 
  #34  
Old 10-01-2014, 08:02 AM
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So, can anybody find out what the distance & dimensions are from bolt to bolt on the caliper mounting points for the Minis? (I will find out tomorrow anyways,but just if sombody has it on hand)

Thanks!
Manny
 
  #35  
Old 10-01-2014, 09:29 AM
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Originally Posted by AbsoluteAuto View Post
Does that include the hats?
Yes, I would have done it a while a go, but I first would have to ship one GP2 brake rotor to the guy first, He said it would take about two weeks
 
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  #36  
Old 10-01-2014, 11:26 AM
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Originally Posted by MarioKart View Post
Yes, I would have done it a while a go, but I first would have to ship one GP2 brake rotor to the guy first, He said it would take about two weeks

What's the offset on the GP2 rotor "hat"?
 
  #37  
Old 10-01-2014, 12:22 PM
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Originally Posted by AbsoluteAuto View Post
Neither DBA nor Wilwood has the rotors, Have emailed stoptech as well let's see if they have something
Wilwood lists rotors that would work. If you ask them for a GP2 application they will of course say no. They didn't have rotors for a Mazdaspeed Protege either but I had Wilwood brakes on mine.
 
  #38  
Old 10-01-2014, 12:30 PM
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Originally Posted by Manny_cooper View Post
What's the offset on the GP2 rotor "hat"?
Maybe 6 or 20, hmmm 27? I actually have no idea
 
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  #39  
Old 10-01-2014, 12:32 PM
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Spending $900 on rotors kind of takes the savings of out buying used 135 calipers.
GP2 rotors are only $258.60 for the pair on ECStuning.
How cheap are you getting the calipers?

I've only seen centric reman calipers for ~$400 a side when you get new GP2 calipers for ~$600 with correct brackets I don't see where the huge savings are coming in.
 
  #40  
Old 10-01-2014, 01:18 PM
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If they are only $258 for a pair then I will go that route. Even Wilwood two-piece rotors will cost more than that.
 
  #41  
Old 10-01-2014, 01:29 PM
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Originally Posted by EuroTechsAZ View Post
Spending $900 on rotors kind of takes the savings of out buying used 135 calipers.
GP2 rotors are only $258.60 for the pair on ECStuning.
How cheap are you getting the calipers?

I've only seen centric reman calipers for ~$400 a side when you get new GP2 calipers for ~$600 with correct brackets I don't see where the huge savings are coming in.
Just curious, where are you finding the GP2 Calipers for $600 w/brackets?
 
  #42  
Old 10-01-2014, 01:29 PM
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Originally Posted by EuroTechsAZ View Post
Spending $900 on rotors kind of takes the savings of out buying used 135 calipers.
GP2 rotors are only $258.60 for the pair on ECStuning.
How cheap are you getting the calipers?

I've only seen centric reman calipers for ~$400 a side when you get new GP2 calipers for ~$600 with correct brackets I don't see where the huge savings are coming in.

Thanks for putting this back into perspective EuroTechAZ. I thought we already had discussed that the rotors were a solved issue. I payed $300.00 plus shipping for my calipers, and they are in pretty good shape. But my main focus is getting the brakes on the car at a reasonable price and a doing a decent job. I do not, however, want to reinvent the wheel. There is plenty of info out there, we just need to put it together.

I talked to a couple of Brembo brake distributors and they don't seem to carry the adapter....and they can't provide me a direct line to communicate either. I will call a "stealership" and see if they can make it happen. If all else fails, there is a local machine shop that is willing to fabricate one for me.

Take into consideration that I have not taken my OEM caliper out and put in the 135i calipers to see if they are direct fit with the adapters they have. Will know for sure tomorrow.

Later tonight I will put together all the information I have gathered, part numbers and things needed.


Manny
(Any CNC machine guys are welcome to chime in)
 
  #43  
Old 10-01-2014, 01:31 PM
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Originally Posted by ForcedFed4 View Post
Just curious, where are you finding the GP2 Calipers for $600 w/brackets?

I think he meant $600.00 each.

http://www.ecstuning.com/ES2643017/
 
  #44  
Old 10-01-2014, 01:35 PM
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correct , $600 each. The centric 135 calipers are listed each also so I was comparing.

Great deal on those used ones. I trolled ebay a while back and almost $1000 used was going rate.
 
  #45  
Old 10-01-2014, 01:37 PM
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Originally Posted by MarioKart View Post
Maybe 6 or 20, hmmm 27? I actually have no idea

Put a measuring tape between your wheel and measure the rotor hat! Help a brother out :P!
 
  #46  
Old 10-01-2014, 01:38 PM
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Originally Posted by EuroTechsAZ View Post
correct , $600 each. The centric 135 calipers are listed each also so I was comparing.

Great deal on those used ones. I trolled ebay a while back and almost $1000 used was going rate.

I got very lucky to be honest with you. A guy was parting out a rear ended 135i...and I creeped to the forum and snagged them.
 
  #47  
Old 10-01-2014, 01:40 PM
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Originally Posted by c0op3r View Post
I think what you would do is turn down the rotors from 26.9 to 26mm to make it work.

I stand corrected. If you get the correct rotor hat offset, I think .9 mm won't be really a problem.
 
  #48  
Old 10-01-2014, 06:36 PM
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So far here are the part #s:

BMW 135i:
Caliper Left: 34106786059 (Brembo #) 20.9994.10 1A
Caliper Right: 34106786060 (Brembo #) 20.9994.09 1A
Bracket Left:20.4078.00 (Brembo #)
Bracket Right: 20.4078.00 (Brembo #)
Pads:34 11 6 786 044


GP2:
Caliper Left: 34106858069
Caliper Right: 34106858070
Bracket Left: 20.9747.85 (Brembo #)
Bracket Right: 20.9747.85 (Brembo #)
Pads: Same as 135i
Collar Screws x4 M12X1,5X32 ZNS3: Part #: 34206850536
Pad Guide pins x8: 34116780506
Rotors: 34116858071KT
Brake Line: 34306858079


There guys.... Phewww! Hope this helps your hunting.
 
  #49  
Old 10-02-2014, 03:26 PM
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Hey guys,

Fitted the brakes. Coop3r helped me out today. Have a looksie.

Fisrt things first, they fit with NO need to buy an adapter. There holes to fit the caliper to the car are just about 1-2 mm off....nothing that just creating wiggle room on those holes wont solve.

There you go guys. I just have to buy the shields, 15mm sapcers, rotors, brake lines, and pads and I think we're good to go.



Once I get everything together I will post pics for you guys enjoy! And any problems I run to.
 
Attached Thumbnails 135i Brembos (Same as Mini GP2s) upgrade thread.  Dump info in here!-mg_0677.jpg   135i Brembos (Same as Mini GP2s) upgrade thread.  Dump info in here!-mg_0678.jpg  

Last edited by Manny_cooper; 10-02-2014 at 03:32 PM.
  #50  
Old 10-02-2014, 05:45 PM
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Unfortunately pads for my 135i are crazy expensive!

But great news! So this entire conversion will cost me less than $400 when I put big brakes on my 135i.

Thanks!
 
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