Best, Easiest Brake Upgrade W124 300TD
Best, Easiest Brake Upgrade W124 300TD
12-08-2018, 08:50 AM
#25
(05-24-2016, 06:15 PM)JoeB Getting back to the topic, the most logical and straightforward ECONOMICAL swap is to simply use w124 24v front callipers & rotors, and the late e320 wagon rear rotor & calliper (vented)The late model w124 wagons share the e420 v8 brakes. Cheap and direct upgrade. Master and booster helps but stock will work.
24v rear rotor and calliper is larger diamater but same thickness.
On the front, there is no need to change the LCA. You cut the dust shield back, so your ABS sensor remains. fit the rotor and calliper. bleed.
BUT - and this is a PITA topic to address. "some" - not all, LCA's (early replaceable balljoint versions) will need the casting flash on the outside of the balljoint area ground back a little, otherwise the rotor will contact and score badly. If the wheel bearings are not correctly preloaded, it will also occur.
Braided hoses make a difference to the pedal feel. The best "upgrade" would be to find a wrecked r129 500SL and take the whole front end incl spindle and LCA and rear hub, rotor calliper from it and fit it up. take the m/cyl and booster at the same time. Probably more trouble than you wanted to take on.
but the cheapest option is simply upgrade the front callipers and rotors to the 4 piston w124 24v versions, as they bolt up to what you have on the car and do not significantly increase the unsprung mass.
If you're going to abuse the car's brakes, then the r129 option is better.
I used r129 booster, early 500e aluminum Brembo 300mm fronts, sl600 rears and 500e master with nice result. Dual booster needs bending lines to fit. I wanted to keep 16” r129 wheels, so 300mm max rotor. Already had the r129 control arms. Did not upgrade spindles (yet).
None of this makes any difference for a street car. Fade only happens on track.
I got lighter pedal feel and more aggressive braking for given pedal pressure. Less unsprung mass up front. Pretty academic.
the vented late wagon setup is plenty good, stops fine and won’t warp like the earlier non vented stuff.
atypicalguy
12-08-2018, 08:50 AM #25(05-24-2016, 06:15 PM)JoeB Getting back to the topic, the most logical and straightforward ECONOMICAL swap is to simply use w124 24v front callipers & rotors, and the late e320 wagon rear rotor & calliper (vented)The late model w124 wagons share the e420 v8 brakes. Cheap and direct upgrade. Master and booster helps but stock will work.
24v rear rotor and calliper is larger diamater but same thickness.
On the front, there is no need to change the LCA. You cut the dust shield back, so your ABS sensor remains. fit the rotor and calliper. bleed.
BUT - and this is a PITA topic to address. "some" - not all, LCA's (early replaceable balljoint versions) will need the casting flash on the outside of the balljoint area ground back a little, otherwise the rotor will contact and score badly. If the wheel bearings are not correctly preloaded, it will also occur.
Braided hoses make a difference to the pedal feel. The best "upgrade" would be to find a wrecked r129 500SL and take the whole front end incl spindle and LCA and rear hub, rotor calliper from it and fit it up. take the m/cyl and booster at the same time. Probably more trouble than you wanted to take on.
but the cheapest option is simply upgrade the front callipers and rotors to the 4 piston w124 24v versions, as they bolt up to what you have on the car and do not significantly increase the unsprung mass.
If you're going to abuse the car's brakes, then the r129 option is better.
I used r129 booster, early 500e aluminum Brembo 300mm fronts, sl600 rears and 500e master with nice result. Dual booster needs bending lines to fit. I wanted to keep 16” r129 wheels, so 300mm max rotor. Already had the r129 control arms. Did not upgrade spindles (yet).
None of this makes any difference for a street car. Fade only happens on track.
I got lighter pedal feel and more aggressive braking for given pedal pressure. Less unsprung mass up front. Pretty academic.
the vented late wagon setup is plenty good, stops fine and won’t warp like the earlier non vented stuff.
Messages In This Thread
Best, Easiest Brake Upgrade W124 300TD - by ak47is1337 - 04-20-2015, 05:23 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by raysorenson - 04-20-2015, 09:13 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by ak47is1337 - 04-22-2015, 01:29 AM
RE: Best, Easiest Brake Upgrade W124 300TD - by ak47is1337 - 04-22-2015, 04:55 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by raysorenson - 04-22-2015, 07:20 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by barrote - 04-23-2015, 11:58 AM
RE: Best, Easiest Brake Upgrade W124 300TD - by ak47is1337 - 04-23-2015, 02:35 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by ak47is1337 - 04-23-2015, 02:38 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by barrote - 04-24-2015, 05:53 AM
RE: Best, Easiest Brake Upgrade W124 300TD - by ak47is1337 - 04-24-2015, 07:00 AM
RE: Best, Easiest Brake Upgrade W124 300TD - by tjts1 - 04-24-2015, 11:02 AM
RE: Best, Easiest Brake Upgrade W124 300TD - by barrote - 04-24-2015, 11:03 AM
RE: Best, Easiest Brake Upgrade W124 300TD - by ak47is1337 - 04-25-2015, 03:27 AM
RE: Best, Easiest Brake Upgrade W124 300TD - by Duncansport - 04-27-2015, 12:21 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by SurfRodder - 05-16-2016, 09:25 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by SurfRodder - 09-25-2016, 10:55 AM
RE: Best, Easiest Brake Upgrade W124 300TD - by atypicalguy - 12-08-2018, 08:38 AM
RE: Best, Easiest Brake Upgrade W124 300TD - by ak47is1337 - 04-27-2015, 02:21 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by capflya - 07-20-2015, 12:24 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by ak47is1337 - 07-20-2015, 12:33 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by hents99 - 07-20-2015, 04:10 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by -Mackan- - 05-15-2016, 06:27 AM
RE: Best, Easiest Brake Upgrade W124 300TD - by Mh95e300d - 05-15-2020, 01:05 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by m1tch - 09-06-2015, 05:56 AM
RE: Best, Easiest Brake Upgrade W124 300TD - by JoeB - 05-24-2016, 06:15 PM
RE: Best, Easiest Brake Upgrade W124 300TD - by atypicalguy - 12-08-2018, 08:50 AM
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