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Old 06-13-2021, 11:17 AM   #1
Jens.L
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Default What rotors for MB Calipers

Hi

Anyone here who remember which rotors works best with 4-piston MB Brembo calipers?.
The caliper seems to fit fine if i drill up the stock holes to m14

I think i read this here before in some thread that the Mb calipers should work fine on Volvo 7/900?. But i can't find it

Just a test with the stock 287mm rotor on my 1997 Volvo 940

Last edited by Jens.L; 06-13-2021 at 04:35 PM..
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Old 06-18-2021, 02:54 PM   #2
The_Geoffrey
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I like the look of this conversion, excuse my ignorance but what car did the callipers come from??

Would be very interested to know if this setup is possible under a 16” wheel
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Old 06-19-2021, 12:38 PM   #3
Jens.L
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Quote:
Originally Posted by The_Geoffrey View Post
I like the look of this conversion, excuse my ignorance but what car did the callipers come from??

Would be very interested to know if this setup is possible under a 16” wheel
These are from a ML55 AMG. Will be some trial and error if i can get it to work. New brake pads are on the way so after that maybe i can measeure how big rotors i can use
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Old 06-19-2021, 01:25 PM   #4
culberro
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Quote:
Originally Posted by Jens.L View Post
These are from a ML55 AMG.
What is the piston diameter for these calipers?
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Old 06-19-2021, 02:17 PM   #5
hiperfauto
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Centric says they're staggered 40/44.

https://centricparts.com/part-detail...model=ml55-amg
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Old 06-19-2021, 02:35 PM   #6
culberro
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Quote:
Originally Posted by hiperfauto View Post
Centric says they're staggered 40/44.

https://centricparts.com/part-detail...model=ml55-amg
Thanks for that.
This looks like a nice and balanced setup, with a slight increase in caliper stopping power (~10%). Probably no need to even swap out the MC.
Add in the radial change for the larger rotor, and you'll probably be in the 15-20% range over stock. Probably not big enough to drastically change the F/R balance.

Total area for brake calculations with MB caliper is: 4.3 square inches, or 2780mm^2.

That's a smidge larger than the S60R calipers at : 4.1in^2 or 2650mm^2.

Stock single piston 940 calipers (dia 2.25") is: 3.98in^2 or 2565mm^2
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Old 06-19-2021, 05:59 PM   #7
redblockpowered
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Maybe something from the FWD Volvo catalog would work? 302mm from a V70 or the like might get you in the ballpark.

What's the pad selection like for these calipers? I didn't see anything in the Hawk catalog in a quick glance, maybe EBC or something has a more sports oriented pad?

I like this upgrade, especially if it fits under a 16" wheel.
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