|
|
|
#1
|
|||
|
|||
W126 Front Brake Upgrade
The brakes on my W123 are getting knackered and I'm considering upgrading to W126 vented rotors on the front. However, I've only ever gotten the current non-vented brakes to fade once. I'm wondering if the extra braking ability will really be of use and whether if will justify the slight increase in unsprung weight. Has anyone done back to back testing to see the results of this modification?
__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress. |
#2
|
|||
|
|||
Quote:
If you want to keep your wheels 14" then the 1st gen SD dust shields, calipers, rotors and pads are a decent upgrade to prevent brake fade.
__________________
Onus probandi incumbit ei qui dicit, non ei qui negat I recondition w123/w126/w124/w140/r107/r129/ steering boxes! 1984 300D "Elsa" odo reset 6/2011 147k 1983 300TD "Mitzi" ~268k OM603 powered 1995 E300 "Adelheid" 262k [Sold] |
#3
|
|||
|
|||
I was thinking 1st gen, since I still have the 14" wheels and haven't found a set of 15's.
__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress. |
#4
|
||||
|
||||
The first gen upgrade is bolt on. I probably would only do it if I had a wagon with the extra weight. The unsprung weight difference is probably not enough to notice in ride quality (and I am picky about that).
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
#5
|
||||
|
||||
I found both upgrades to be fantastic.
__________________
http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42 |
#6
|
||||
|
||||
N.B.
You must install brakes vacuum booster from 126 also. And it will really work better. |
#7
|
||||
|
||||
Quote:
.
__________________
1983 123.133 California - GreaseCar Veg System |
#8
|
|||
|
|||
__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress. |
#9
|
||||
|
||||
The 126 have double-membran vacuum booster.
|
#10
|
||||
|
||||
Yes, but what does that do in terms of braking in a w123?
__________________
1983 123.133 California - GreaseCar Veg System |
#11
|
||||
|
||||
The vac. booster & master cylinder from 126 on 123 gives more intensive braking. Less effort on brake pedal - more effort on brake pads. Can an SD brake booster be wedged into a W123? |
#12
|
||||
|
||||
I had a car with the 126 brakes on it and the brake feel was just fine. Easier is not better in my mind if what you have to begin with is good.
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
#13
|
||||
|
||||
You guys obviously are missing the point here. Imagine having this discussion with a girl you're trying to impress:
You: Yeah, my car has a double-membrane brake booster. Her: Um, OK. You: What's your number? Her: 9-1-1. Call me anytime. You: That's funny, you're the third girl I've met tonight with that phone number. Are you guys roommates or something?
__________________
"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes 1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod 2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die." |
#14
|
|||
|
|||
brake upgrade
I am exactly where you are now... on a recent trip up into the San Juan Mountains of SW Colorado in the 300D (Ouray, CO) I experienced serious brake fade. There was a lot of climbing and braking as we ascended to Molas pass heading north out of Durango on 550. My brakes started out smooth, but after enough braking to experience serious fade, they eventually started rumbling on hard application.. In the picture below you can see the new Bosch non-vented rotors that I installed just 1000 miles ago. I am a machinist and I cut the oval grooves on them to imitate the pattern that I used to buy for my Audi A6 4.2 - but they are not working out Not only am I experiencing brake fade, but the groove pattern is causing rotor distortion under heat stress.
I decided to upgraded to vented rotors from an SD of similar vintage, and I will not machine or drill the rotors next time. I have the upgrade components mentioned above that I took off a 1983 W126, and look forward to fade-free & low stress motoring in the mountains. I have no doubt that the vented rotors will be adequate. |
#15
|
||||
|
||||
Better braking, less fade. There is not a whole lot of added weight going from solid to vented....
__________________
http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42 |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|