DRBC43AMG

So, if I understand it is a straight swap apart some bending of the brake pipes?

cm60k

IMO, SL600 M/C is better even with C32/C55 brakes or stock C43 brakes...

ZAYED,,

cm60k

Yes, it's straight swap, but not remember which pipeline need to be changed, sorry for bad memory...

ZAYED,,

raw1879

ok I swop out the brake booster and M/C with used parts pedal still same but car brakes a little better I will order the sl600 M/C

DRBC43AMG

Please keep us informed

Ausmbtech

I've been looking at other master cylinders too. I did a bit of research but didnt get a final answer. Hopefully this will help you find an answer.

W202 C43/55, W210 E55, W208 CLK55 and R170 SLK32 all have identical front brake calipers and rotor size (SLK32 weren't "2 piece" style)

The C43/55 and E55 (W210) were both built at the end of their chassis runs so they were built using as much from the "parts bin" as possible. The master cylinders weren't upgraded to suit the larger calipers. the SLK32 was over braked for its weight so a incorrectly sized M/C isnt noticable and the CLK55 had a slightly tweaked master cylinder sizing done.

Master cylinder sizes
C43 F 23mm/R 19mm
E55 F 25mm/R 19mm
CLK55 F 25mm/R 22mm
SLK32 F 25mm/R 21mm

The reduce pedal travel you need to increase the M/C piston size, to increase pressure you reduce it (pedal travel permitting). As you can see the C43 would have the longest pedal travel of these 4 cars and the CLK and SLK have greater front brake bias. being twin boosters we have more than enough brake pressure than we can sacrifice to improve pedal travel.

I also found R32 Golfs also use the same caliper design, piston size and rotor size as our cars. They have a 27mm master cylinder bore (I forgot the rear size). They built the M/C to suit the specific model.....those cars have very little pedal travel.

So I figured from our C43's we need a 27/22mm master cylinder for a good pedal and brake bias. I had a brief look and coundn't wait any longer so I just ordered a standard M/C.

I didn't think to look at the R129 range.......they have a 27/22mm M/C on the last of the SL600's!!!

If someone if willing to give it a go and see if it fits out boosters then it might be the answer

DRBC43AMG

Nice research. Thanks for posting this. It looks like we can probably find a good solution.

My pedal is not all that bad, but it can be improved. The first part of the travel make the brakes react softly and the more you press in the more it bites hard!

I believe you were the first to connect our brakes to those of the R32. If you look at my thread below https://mbworld.org/forums/c36-amg-c...rake-pads.html I found plenty more...

raw1879

what great info thank you. as soon as I get the M/C sl600 one I have ordered ill post I step by step

KJI3jflarryfe93

how much did stealership charge you for sl600 M/C?

cm60k

Good info. Ausmbtech..,

*C43 & early 98-99 E55 got the same M/C, (F 25.4mm & R 19.5mm), #: "005 430 83 01"

*00-02 E55 & CLK55 sharing the same M/C, (F 25.4mm & R 22.2mm), #: "005 430 88 01"

*01-02 SL600 got (F 27mm & R 22.5mm), #: "005 430 89 01".....

ZAYED,,

cm60k

Dealer here ask -!($460)!-,

price for another brands here:-

ATE ($310), Febi ($195), FTE ($180), Lucas ($255), TRW ($295)

ZAYED,,

raw1879

I got a used one from ebay it was $60

cm60k

Do you taste it..?, i hope pressure is good....!

ZAYED,,

raw1879

I do not have it yet but I hope it will be ok

Pagz

Really good info thanks guys!!!, I didn't realize the CLK55 has larger M/C, I have one lying around do you think it would be worth swapping to?..

raw1879

yeah

Pagz

cool. and no impact for bas/esp?

Also any reason the piston size should be different in clk55 vs C43? They are pretty much same chassis/wieght/brakes etc

Zayed, your piston sizes for C43 are different to ausmb who's correct?

cm60k

Hey Paul,

the measurement for F/R housing dia., not for pistons...

ZAYED,,

Pagz

Hello Zayed!,

So is this measurement not the piston inside the master cylinder but actually the cylinder housing size?

Cheers,

cm60k

Hi Paul,

Ah sorry, mixing-up some info. with other guy, yes the size for the F/R pistons -(⌀)- dia.,,


how's your swapping project...??

ZAYED,,

Pagz

Zayed,
Thanks for clearing this up!.

Swap went well, touch shift with 5.4l takes the 202 to a whole new level,the trans is silk... very happy

re brake issues, has anybody replaced the bushes the floating caliper slide on?...the anti vibration spring on the front of the caliper places upwards pressure between the fixed and floating portion,could this cause the caliper to not sit parallel with the rotor when these bushes wear? maybe one way to check this is to press the brake, then straight away press again and note if travel decreases??.

My bushes have a lot of play...

cm60k

Welcome Paul,

glad your happy with new ride, did you replace the ECU/diff./trans./TCU...?

which bushes..?? do you refer to stock calipers..???

ZAYED,,

Pagz

Zayed,
Yes all Ecu,Tcu,Prop/Diff/Axels/Subframe,Trans,Eis,Touchshifter/Harness,multifunction steering,cluster,Radio. Only problem no rear window actuation(clk55 EIS coding),still working on this.

Sorry I was refering to stock C43 brakes,I just realised OP is for 6 piston brakes

cm60k

Good to hear that, you can FLY now isn't....

do you mean these bushings..?



ZAYED,,

DRBC43AMG

I believe having read on here that those bushings can also be found on the older BMW 7 series at cheaper prices than those from the MB dealer. I think it was ausmbtech who said this