W124 brake booster & master cylinder upgrade - Page 5 - PeachParts Mercedes-Benz Forum

gsxr · #61 02-11-2015, 09:13 PM

Thanks for all the updates, DDH! Much appreciated.

Just curious... any idea how the the 561.1 pads are different from the 561 (minus the .1)? I'm guessing total thickness maybe, but this is the first I've seen with the .1 suffix on any of the MB/Porterfield pads.

RE: post #55 above, your wagon will have the 294x25 front brakes, which are usually adequate for most normal use. If you want an upgrade from that size, you have a few options, but will need to use larger wheels. The 320x30 brakes would be really sweet but they're a bit spendy, and do not fit behind either CLK forged 16's, or the narrow 7.5 Evo II's. I plan to use the CLK wheels on my 092 and will likely just keep the stock brakes. Unless some day I put in a C36 motor... hmmm...

dieseldiehard · #62 02-11-2015, 10:07 PM

IIRC I am using 300X28mm rotors (Balo 129-421-20-12-64 M5) rotors on the fronts of the 87 and they provided excellent stopping power and, as I have said several time, the best buck I ever spent on that car was on the brake upgrade!

I have been driving the '95 wagon a bit lately and find the brakes silky smooth and responsive maybe not suited for an autocross or track but they feel better than the '87 was (or maybe its because I drive the '87 hard and fast and baby the wagon?) perhaps by '95 MB improved the brakes? The wagons always had bigger rear pads but the front on the '95 is a dual piston isn't it? that would explain better braking. the '95 is a real joy to drive - after looking for several years on and off I guess I finally stumbled onto one.

BTW the later CLK wheels (208-401-07-02 7J 16H2 ET37) cleared the big calipers on the '87 upgrade (barely!) whereas the forged CLK's (coke bottle cap wheels) did not.
I now have 3 of the same newer CLK wheels for the wagon, the 4th is on its way to me so I can upgrade to 16" tires. thats as far an upgrade as I intend to go, unless I find a front limo sway bar

Quote:

Originally Posted by gsxr

Thanks for all the updates, DDH! Much appreciated.

Just curious... any idea how the the 561.1 pads are different from the 561 (minus the .1)? I'm guessing total thickness maybe, but this is the first I've seen with the .1 suffix on any of the MB/Porterfield pads.

RE: post #55 above, your wagon will have the 294x25 front brakes, which are usually adequate for most normal use. If you want an upgrade from that size, you have a few options, but will need to use larger wheels. The 320x30 brakes would be really sweet but they're a bit spendy, and do not fit behind either CLK forged 16's, or the narrow 7.5 Evo II's. I plan to use the CLK wheels on my 092 and will likely just keep the stock brakes. Unless some day I put in a C36 motor... hmmm...

dieseldiehard · #63 02-11-2015, 10:13 PM

Quote:

Originally Posted by gsxr

Thanks for all the updates, DDH! Much appreciated.

Just curious... any idea how the the 561.1 pads are different from the 561 (minus the .1)? I'm guessing total thickness maybe, but this is the first I've seen with the .1 suffix on any of the MB/Porterfield pads.

I have a drawing for the 561.1 (don't ask me where I got it

It shows 99.8mm across and 73.5 inner to outer edge and 14.0 overall thickness
Doesn't show the size of the actual friction material unfortunately other than the thickness but as you say that's probably the only difference here.
I don't have a dwg of the 561, maybe you can measure the one you got er recently?

tjts1 · #64 02-12-2015, 06:44 PM

Quote:

Originally Posted by dieseldiehard

just to show you I actually read your spreadsheet thoroughly, I saw that you didn't include the weight of the 290X10 rear rotors, but as they are solid,not vented I would expect them to weigh a bit more than rotors for the early chassis, maybe I'll get the weight for you sometime!

Reid

10.7LB according to this.
https://i.imgur.com/CVzJf98.jpg
I put these brakes on the back of my 87. They came off a w210 sedan. Nice upgrade from the 258mm rears and they fit inside 15" wheels. So 295 front 290 rear.

dieseldiehard · #65 02-13-2015, 06:28 PM

Quote:

Originally Posted by tjts1

10.7LB according to this.
https://i.imgur.com/CVzJf98.jpg
I put these brakes on the back of my 87. They came off a w210 sedan. Nice upgrade from the 258mm rears and they fit inside 15" wheels. So 295 front 290 rear.

Hey that jpg is very useful, thanks!
So, I presume you swapped early 210 calipers onto your 124, right? probably a lot easier to find those than late 124 wagon calipers.

To use the 500 rear calipers I had to replace the entire hub with heatshields to clear them. That led to needing the CLK wheels, I was lucky to find a set and they cleared but not by much.

tjts1 · #66 02-13-2015, 06:45 PM

Yes, I think they came off a 97 e320. They bolted right in but I had to cut down the dust shields for clearance.