BMW CCA Member
I guess I am mistaken, but I will stop by and look again next time I am across town.
Member
So did you ever finish the ATE adapters?
When I fitted the brembos I always felt them brake less than the ATE.
Now I am running the ATE with 324 and have also the CSI calipers on the shelf but the 345 discs are so expensive so I am looking at other options at the moment.
What would you suggest Hyper?
Member
Yes, they are sitting right next to me.
In mid 2017 I built about 10 or 15 pair, both Brembo and ATE versions, and also was into kitting, basically assembling all the parts and tools needed for DIY.
The business launch got interrupted by forced marches here and there around the world.
When I finally got back into the office in early November '17, I decided I had run out of time on a busy calendar that has things coming at me in 2018.
So ironically, within arms reach are a whole bunch of brackets, rebuilt calipers, stack of new rotors, boxes of hoses, boxes of pads, tool boxes filled with (uh) tools, how-to documentation filled with words, matching rears, etc.
But I can't get to them just yet.
Powder coated brackets, left & right, Brembo & ATE.
Survey of DIY parts, front & rear. Not shown: tools and instructions.
*****
When you do the comparison, ATE vs Bembo, try to lock down all other variables, meaning run the same pads (brand, material & rating), and I think I had managed that, possibly with Jurid.
Yes, the ATE's are just slightly more convincing than the Brembo's.
But, at least combined with the E60 rotor, both are fantastically nice for street use.
I've been running around with Brembo's + E60 rotors for 3-5 (?) months now, with zero issues and no reason to want more on the street.
Brembo's are just coincidentally what was on there when I last touched the project back in Sept-Oct. '17.
Randomly, it could have been ATE on there now.
Last edited by Hyper; 02-03-2018 at 08:49 AM. Reason: Pic add
Spitfire980
Have you looked at E60 M5 calipers and rotors?
"Understeer is when you hit the wall with the front of the car, Oversteer is when you hit the wall with the rear of the car, Horsepower is how fast you hit the wall, Torque is how far you take the wall with you."
Member
Nope, not familiar.
But I did bring in the E60 standard single pot as covered in post 45.
The two significant issues are ...
* E60 mounting holes don't match the e31 application.
* A typical E31 owner doesn't already have these calipers.
Once you've opened up the gates to buying other calipers and making other brackets, then sky's the limit, the field is vast, the competition is competitive.
Spitfire980
You should look into it, its pretty popular on the E38....I picked up 4 calipers and rotors for $470 for my E38Originally Posted by Hyper
https://www.bimmerforums.com/forum/s...5-front-brakes
http://www.bimmerboard.com/forums/posts/878049/
"Understeer is when you hit the wall with the front of the car, Oversteer is when you hit the wall with the rear of the car, Horsepower is how fast you hit the wall, Torque is how far you take the wall with you."
Member
No, I shouldn't.
This thread is about BBKoB directed at the E31.
Member
Looking forward to the launch.
1993 850Ci.....18 years & 165,000 miles and counting!
Spitfire980
Hence my suggestion on the viability of using E60 M5 calipers and rotors on the E31.
"Understeer is when you hit the wall with the front of the car, Oversteer is when you hit the wall with the rear of the car, Horsepower is how fast you hit the wall, Torque is how far you take the wall with you."
Member
I have this setup on my 1993 850ci 6 speed and works very well for none forced induction cars.
I have tested it going at higher speeds then sudden stop and switch backs and no fading.
Alex
Member
Just to maximize clarity, minimize misunderstanding...
And if my memory is still intact...
The bracket solution in this thread was applied to the ATE single on Alex's 850 a year ago, along with the e53 42/12 mod out back.
Mine left off with the Brembo's attached, plus e90 44/22 out back.
So for a year, we've been running around with both the ATE and the Brembo over E60 rotors.
The rear mods obviously got the same road time, so its the balanced package that we are commenting on.
Also significant to our evals, we both long ago swapped out our base trim suspension which seemed to put the nose on the ground even with standard brakes.
I have M-tech springs, he has CSI. Both of us have the Koni mod up front.
Alex does mountains and canyons. I do post office runs to mail door handle pivots.
Neither one of us does track where I suppose an E60 M5 caliper might become useful, especially when paired with the E52 46/20 rears sitting next to me.
The brake biz inventory is still literally piled up around me, and instead my priority is to update instrumentation and engine controls.
Member
Engine controle?
Something for the v12?
Member
Alex is in a distinct class, similar to Neil Armstrong and Chuck Yeager.
The quintessential beta site, he is totally naive/unconcerned as to whether the engineers behind the scenes have their slide rules properly calibrated.
So far he has resisted my two attempts to kill him off.
Why, yes. Also sponsored by Alex.
Don't let the "xxx840" fool you, he's deeply invested in V12.
- - - - - - - - - - -
Hi Hyper, any chance you would sell a pair of adapters? Would love a hyper front on my car. Feel free to send me a private message if you want to discuss offline. Thanks!
Member
I haven't messed with stuff in over 4 years.
I'm not opposed but I'd have to audit my bins and see if it makes sense.
This is only after I knock out later this week, a set of handle pivots shipping to Pittsburgh.
Plenty of brackets around, probably 20 pair, but there is a need to include a small tool kit containing bolts, a drill bit, tap, more.
And documentation.
If I were doing a local job, I have rotors calipers braided lines & premium pads.
- - - - - - - - - - -
No rush on this end! Maybe we can see if group buy interested
Member
*** Thread synopsis
* Not 100% correct, you could have a machinist restore the hole and replace the shield OR you could swap in an unmod'd strut.
*** Ahh, another beta tester
Just for you my friend, a PM with shipping address will get you...
1) a set of brackets for your app, specify either Brembo or ATE
2) The application specific bolts
3) A drill & M14-2.0 tap set
4) a cap, to plug the fluid line while working
Holding back from the free sampler...
1) rotors
2) rebuilt & painted calipers
3) lines
4) premium pads
5) tap wrench, for these bigger taps {ed: found in my BBKoB bins an adapter, 3/8in socket wrench -> 5/16 square, shown above}
6) jig for drill & tap ops (because it was never produced)
7) typical shop tools (box wrenches, sockets, jacking pad, files)
8) fluid
There is a "BBKoB for Dummies" PDF.
I will endeavor to edit it down to the seasoned shop artist.
{ed: Done. It was actually pretty good content, kept most. Needs more pics, more polish.}
*** Biz op
More complicated than that, the project was at a crossroads.
Either continue with contract manufacturing runs with its pitfalls OR retain made-to-order flexibility via a home machine shop with CNC capability.
Home CNC was decided but a firm commitment wasn't made due to a busy environment.
I'm no longer considering a brake biz.
Got other interests, equally unprofitable.
Last edited by Hyper; 06-30-2022 at 10:29 AM. Reason: Pic add
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