123 brake upgrade to 126 2nd Gen
123 brake upgrade to 126 2nd Gen
Needed for convert:
-Rotors
-Calipers
-Backing plates
-15" or larger wheels
Stock solid 280mm w123
Unbolt caliper and remove rotor
Remove backing plate. perfect time for clean and paint.
Now time to reassemble. Remember your locktite. If it had it, put it back.
If you went the pick-a-part route, you might need/want to do some cleaning and painting. I did, and used caliper paint. It required a bake hardening process. When pulling the calipers at the yard i cut the hoses at the caliper fitting, installed a screw in the open hose to plug off for cleaning/painting. Otherwise a set of pipe plugs would be required.
Once the rotor was installed, (cleaned, painted, wheel bearings cleaned and repacked) I installed caliper and mounted. To limit the amount of spillage and lose of brake fluid, i left the old caliper hose attatched until the new caliper was installed. At this point the line must be removed to unthread from old caliper and rethread into new caliper. They use the same part pad, transfer or install new pads. Note:dont forget to get the pad springs and pins.
After 100 bucks, a trip to the yard and a saturday fooling around making the conversion, Totally worth it! More responsive, aggressive feel.
83' 300SD tuning begins soon.
2001 Dodge Ram 2500 4x4 5.9l Cummins
Superchips programmer, S&B intake, 5" straight pipe, 8" Sky jacket lift and 37" Toyota muds.
makin' smoke
04-24-2011, 12:43 AM #1Due to the fact that there is no dedicated thread to the w126 2nd gen brake conversion on a 123; i figured i'd post one with pics.
Needed for convert:
-Rotors
-Calipers
-Backing plates
-15" or larger wheels
Stock solid 280mm w123
Unbolt caliper and remove rotor
Remove backing plate. perfect time for clean and paint.
Now time to reassemble. Remember your locktite. If it had it, put it back.
If you went the pick-a-part route, you might need/want to do some cleaning and painting. I did, and used caliper paint. It required a bake hardening process. When pulling the calipers at the yard i cut the hoses at the caliper fitting, installed a screw in the open hose to plug off for cleaning/painting. Otherwise a set of pipe plugs would be required.
Once the rotor was installed, (cleaned, painted, wheel bearings cleaned and repacked) I installed caliper and mounted. To limit the amount of spillage and lose of brake fluid, i left the old caliper hose attatched until the new caliper was installed. At this point the line must be removed to unthread from old caliper and rethread into new caliper. They use the same part pad, transfer or install new pads. Note:dont forget to get the pad springs and pins.
After 100 bucks, a trip to the yard and a saturday fooling around making the conversion, Totally worth it! More responsive, aggressive feel.
83' 300SD tuning begins soon.
2001 Dodge Ram 2500 4x4 5.9l Cummins
Superchips programmer, S&B intake, 5" straight pipe, 8" Sky jacket lift and 37" Toyota muds.
Do you have a list of cars which make good donors ? Is the back brakes easy also?
Thanks for the info.
Please share.
Ninth Year Anniversary with STD on 1-9-2020
visit: www.dieselfuelinjector.guru
Project 2018: Really get the car finished -- Turbo OM617 greater than 175 MPH goal.
RED W123 - left Germany as 240D in 1982. Full AMG body kit less rear apron, 2:65LSD, five speed Getrag 717.400, manual steering, read leather interior, manual brake conversion, electric water pump (EWP), and a bunch of other goodies ...
VERY NICE,
Do you have a list of cars which make good donors ? Is the back brakes easy also?
Thanks for the info.
Please share.
Ninth Year Anniversary with STD on 1-9-2020
visit: www.dieselfuelinjector.guru
Project 2018: Really get the car finished -- Turbo OM617 greater than 175 MPH goal.
RED W123 - left Germany as 240D in 1982. Full AMG body kit less rear apron, 2:65LSD, five speed Getrag 717.400, manual steering, read leather interior, manual brake conversion, electric water pump (EWP), and a bunch of other goodies ...
83' 300SD tuning begins soon.
2001 Dodge Ram 2500 4x4 5.9l Cummins
Superchips programmer, S&B intake, 5" straight pipe, 8" Sky jacket lift and 37" Toyota muds.
makin' smoke
04-24-2011, 11:21 AM #386' and up w126 chassis should all have the 300mm brakes. The rears are the same, solid disc and same diameter. I am not sure about the coupe versions of the 126. I believe they used the same rotor but used a "floating" caliper. You would have to use different pads. Also the w126 with 2nd Gen brakes used a different master cyl. Possibly because of the ABS/ASR system. The pistons in the w126 2nd Gen calipers are the same as the stock 123. Guaranteed cross application. Not sure if the floating calipers have the same displacement which could mess with the proportioning of the brake system.
83' 300SD tuning begins soon.
2001 Dodge Ram 2500 4x4 5.9l Cummins
Superchips programmer, S&B intake, 5" straight pipe, 8" Sky jacket lift and 37" Toyota muds.
1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
willbhere4u
04-24-2011, 11:32 AM #4Also be ready to measure your wheels to make sure they fit over the new breaks! ask how I know this!
1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
Do you use the W123, W126 brake hoses?
I want to order some braided hoses to fit while I'm doing it.
Cheers Frank.
![[Image: d7235ae7.jpg]](http://i148.photobucket.com/albums/s21/fha772/d7235ae7.jpg)
http://www.ppcmag.co.uk/forum/viewtopic.php?f=47&t=6743&start=105
http://www.youtube.com/watch?v=AMf0sZubyfg&feature=plcp
http://www.youtube.com/watch?v=iPZy0pNgcZ0&feature=plcp
Hi, I'm planning to do this next week, i have 1 question though.
Do you use the W123, W126 brake hoses?
I want to order some braided hoses to fit while I'm doing it.
Cheers Frank.
http://www.ppcmag.co.uk/forum/viewtopic.php?f=47&t=6743&start=105
http://www.youtube.com/watch?v=AMf0sZubyfg&feature=plcp
http://www.youtube.com/watch?v=iPZy0pNgcZ0&feature=plcp
DeliveryValve
08-04-2011, 06:34 PM #6The w123 hose will fit the w126 caliper.
.
Gota love Mercedes Diesels!
.
http://www.ppcmag.co.uk/forum/viewtopic.php?f=47&t=6743&start=105
http://www.youtube.com/watch?v=AMf0sZubyfg&feature=plcp
http://www.youtube.com/watch?v=iPZy0pNgcZ0&feature=plcp
Thanks, I'll order my new hoses now!!!
http://www.ppcmag.co.uk/forum/viewtopic.php?f=47&t=6743&start=105
http://www.youtube.com/watch?v=AMf0sZubyfg&feature=plcp
http://www.youtube.com/watch?v=iPZy0pNgcZ0&feature=plcp
-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
09-30-2012, 08:36 PM #9All I need is to pick up some pads before I can join the club
-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
Love to do this mod on my W123 as I'm due for brakes, I have a small sand blaster so I'm kind of thinking of pulling a set from the yard and getting a seal kit and having a go at it.
(04-24-2011, 12:43 AM)makin smoke Due to the fact that there is no dedicated thread to the w126 2nd gen brake conversion on a 123; i figured i'd post one with pics.
Needed for convert:
-Rotors
-Calipers
-Backing plates
-15" or larger wheels
Stock solid 280mm w123
Unbolt caliper and remove rotor
Remove backing plate. perfect time for clean and paint.
Now time to reassemble. Remember your locktite. If it had it, put it back.
If you went the pick-a-part route, you might need/want to do some cleaning and painting. I did, and used caliper paint. It required a bake hardening process. When pulling the calipers at the yard i cut the hoses at the caliper fitting, installed a screw in the open hose to plug off for cleaning/painting. Otherwise a set of pipe plugs would be required.
Once the rotor was installed, (cleaned, painted, wheel bearings cleaned and repacked) I installed caliper and mounted. To limit the amount of spillage and lose of brake fluid, i left the old caliper hose attatched until the new caliper was installed. At this point the line must be removed to unthread from old caliper and rethread into new caliper. They use the same part pad, transfer or install new pads. Note:dont forget to get the pad springs and pins.
After 100 bucks, a trip to the yard and a saturday fooling around making the conversion, Totally worth it! More responsive, aggressive feel.
-1982 300SD, found out she has an '85 Engine, unknown mileage, redoing the top end and chain, head has been ported and polished, non EGR manifolds / non ARV turbo
-1982 300D, too many issues to list.
-Alt Fuel Buff
-Founder www.SWFLBenzCLub.com
SpecialDelivery
07-04-2013, 03:24 AM #11Am I reading this right? You used junkyard calipers on this job? How did you prep them for paint? and did you bake them as well...did the seals stand up to the oven? or did you break them down after sanding and then cook and then put new seals?
Love to do this mod on my W123 as I'm due for brakes, I have a small sand blaster so I'm kind of thinking of pulling a set from the yard and getting a seal kit and having a go at it.
(04-24-2011, 12:43 AM)makin smoke Due to the fact that there is no dedicated thread to the w126 2nd gen brake conversion on a 123; i figured i'd post one with pics.
Needed for convert:
-Rotors
-Calipers
-Backing plates
-15" or larger wheels
Stock solid 280mm w123
Unbolt caliper and remove rotor
Remove backing plate. perfect time for clean and paint.
Now time to reassemble. Remember your locktite. If it had it, put it back.
If you went the pick-a-part route, you might need/want to do some cleaning and painting. I did, and used caliper paint. It required a bake hardening process. When pulling the calipers at the yard i cut the hoses at the caliper fitting, installed a screw in the open hose to plug off for cleaning/painting. Otherwise a set of pipe plugs would be required.
Once the rotor was installed, (cleaned, painted, wheel bearings cleaned and repacked) I installed caliper and mounted. To limit the amount of spillage and lose of brake fluid, i left the old caliper hose attatched until the new caliper was installed. At this point the line must be removed to unthread from old caliper and rethread into new caliper. They use the same part pad, transfer or install new pads. Note:dont forget to get the pad springs and pins.
After 100 bucks, a trip to the yard and a saturday fooling around making the conversion, Totally worth it! More responsive, aggressive feel.
-1982 300SD, found out she has an '85 Engine, unknown mileage, redoing the top end and chain, head has been ported and polished, non EGR manifolds / non ARV turbo
-1982 300D, too many issues to list.
-Alt Fuel Buff
-Founder www.SWFLBenzCLub.com
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