I just upgraded my wagon with first generation w126 rotors and calipers. I used a 1985 300SD to search for parts. The only difference between w123 and 1st gen. w126 brakes is the front rotors are vented and thicker on the w126 and I think the caliper has a shorter piston. The rear calipers and rotors are exactly the same. This upgrade is only for the benefit of the vented rotors and no different than a caliper and rotor R&R. I replaced the hoses and my front wheel bearings at the same time. There is no additional stopping power ... just more time to use it. I used this write-up to help me. Thanks rhodes2010, it was helpful: How To Replace Front Rotor W123 Before: After:

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10th Annual Southeast PA Benzfest start at post #1472

Chad
1985 300CD - "Gladys" - 255,XXX miles - FOR SALE
2005 Dodge Magnum 3.5 SXT AWD
1998 Acura 3.0 CL
OBK#44
"Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.)

SOLD
1985 300TD - Red Dragon
1986 300SDL - Coda
1991 - 300TE
1995 - E320

Beautiful job! Keep us informed on the long term results.

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1983 123.133 California
- GreaseCar Veg System

Thanks

I'll let everyone know how it holds up. I plan to tow a trailer which is what prompted the upgrade to vented rotors.

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10th Annual Southeast PA Benzfest start at post #1472

Chad
1985 300CD - "Gladys" - 255,XXX miles - FOR SALE
2005 Dodge Magnum 3.5 SXT AWD
1998 Acura 3.0 CL
OBK#44
"Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.)

SOLD
1985 300TD - Red Dragon
1986 300SDL - Coda
1991 - 300TE
1995 - E320

To lancaster?

The new set-up does look pretty - nice job. I won't be posting my before and after shots of the 240d - ol' arlene is camera shy.

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1981 240d - 135k - Arlene

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10th Annual Southeast PA Benzfest start at post #1472

Chad
1985 300CD - "Gladys" - 255,XXX miles - FOR SALE
2005 Dodge Magnum 3.5 SXT AWD
1998 Acura 3.0 CL
OBK#44
"Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.)

SOLD
1985 300TD - Red Dragon
1986 300SDL - Coda
1991 - 300TE
1995 - E320

That is a good idea. I had trouble with the heavier 300td wanting to warp rotors so a vented rotor is good with the extra weight, IMHO.

Tom W

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Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins& six speed; I have had about 35 benzes. I am finishing a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual....I also have a Lotus 7 replica autocrosser with a modified K20 Acura engine.

Chad, you should paint your calipers red or something bright while you're at it. That would look pretty cool.

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" The market, like the Lord, helps those who help themselves. But, unlike the Lord, the market does not forgive those who know not what they do."- Warren Buffett

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 25,000 miles
2002 C320 Wagon 113,000 miles

Your previous posts on this topic helped me decide to do this upgrade.


Dee8go,

I was considering painting the calipers, but they look so pretty the way they are. They will most likely be all black with brake dust in a week anyway.

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10th Annual Southeast PA Benzfest start at post #1472

Chad
1985 300CD - "Gladys" - 255,XXX miles - FOR SALE
2005 Dodge Magnum 3.5 SXT AWD
1998 Acura 3.0 CL
OBK#44
"Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.)

SOLD
1985 300TD - Red Dragon
1986 300SDL - Coda
1991 - 300TE
1995 - E320

I saw new brake lines there too. Looks nice.

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DJ


84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012

Thanks. The fittings that were attached to the wheel well were tough even with two wrenches. I ended up breaking a piece off the plastic sensor cable clip. It still works fine, and it was the worst thing that happened through the whole job.

I am glad I decided to get two 3/8" drifts for the old race removal. Each hub destroyed all the clean edges on one drift. I imagine one 1/2" drift might give enough edge for all four races if you plan carefully.

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10th Annual Southeast PA Benzfest start at post #1472

Chad
1985 300CD - "Gladys" - 255,XXX miles - FOR SALE
2005 Dodge Magnum 3.5 SXT AWD
1998 Acura 3.0 CL
OBK#44
"Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.)

SOLD
1985 300TD - Red Dragon
1986 300SDL - Coda
1991 - 300TE
1995 - E320

I've rounded the fitting that attaches to the hose on one my of cars once. Not fun.

__________________
DJ


84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012

Why not SS brake hoses?

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"Buster" in the '95

Our all-biodiesel family
1995 E300D (W124) . .239,000 miles My car
1996 E300D (W210) . .313,000 miles Wife's car
Santa Rosa population 170,685 (2012)
Total. . . . . . . . . . . . 722,685
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

I was trying to keep my costs to a minimum. The brakes aren't the only thing I've needed to work on.

Do these rubber lines get much expansion? I guess if I was going to a 4 pot caliper it would be necessary.

__________________
10th Annual Southeast PA Benzfest start at post #1472

Chad
1985 300CD - "Gladys" - 255,XXX miles - FOR SALE
2005 Dodge Magnum 3.5 SXT AWD
1998 Acura 3.0 CL
OBK#44
"Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.)

SOLD
1985 300TD - Red Dragon
1986 300SDL - Coda
1991 - 300TE
1995 - E320

[QUOTE=Chad300tdt;1825029]Your previous posts on this topic helped me decide to do this upgrade.

Glad to help.

Looks like a first class job.

Tom W

__________________
Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins& six speed; I have had about 35 benzes. I am finishing a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual....I also have a Lotus 7 replica autocrosser with a modified K20 Acura engine.

Happened to me too on a rear brake line of our '83SD....ended up replacing that section of the hard line....not all that big of a deal, but still a pain.

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-diesel is not just a fuel, its a way of life-
'89 420SEL 168k - mine (OC-170,000)
'93 190D 2.2 - 223k - mine (OC-222,700)
'01 E320 Wagon - 149k - mine (OC-154,000)
'05 C240 4matic Wagon - 153k - wifes (OC-154,500)
'01 E320 - 162k - Dad's (OC-163,500)
'07 E350 Wagon - 116k - dad's (OC-121,500)
'02 E320 - 193k - Brother's (OC - 192,000)
'09 E350 4matic Sedan - 84k - Brothers (OC-85,500)