STD Tuning Brakes Cross Drilled Rear Rotors

Cross Drilled Rear Rotors

Cross Drilled Rear Rotors

 
  • 0 Vote(s) - 0 Average
 
bgkast
VGT-Intercooled

325
04-05-2008, 08:21 PM #1
I don't know what brand they are, but my 240D has cross drilled rear brake rotors. What should I make of this?
Attached Files
Image(s)
   
bgkast
04-05-2008, 08:21 PM #1

I don't know what brand they are, but my 240D has cross drilled rear brake rotors. What should I make of this?

Attached Files
Image(s)
   

winmutt
bitbanger

3,468
04-06-2008, 06:27 AM #2
On a W123? Pull them off and look for manufacturer info!

1987 300D Sturmmachine
1991 300D Nearly Perfect
1985 300D Weekend/Camping/Dog car
1974 L508D Motoroam Monarch "NightMare"
OBK #42
winmutt
04-06-2008, 06:27 AM #2

On a W123? Pull them off and look for manufacturer info!


1987 300D Sturmmachine
1991 300D Nearly Perfect
1985 300D Weekend/Camping/Dog car
1974 L508D Motoroam Monarch "NightMare"
OBK #42

bgkast
VGT-Intercooled

325
04-06-2008, 12:00 PM #3
I will next time I have the wheel off.
bgkast
04-06-2008, 12:00 PM #3

I will next time I have the wheel off.

MTUPower
looking for more power on a daily driver

287
05-30-2008, 08:37 PM #4
any news? are they solid or vented?

2005 CDI heavily modified 1984 300TD - Myna pump/TMIC/enlarged PC's/HX30Super/W126 II front brakes/Vogtland springs/EGT +Boost gauges/H4 Hella's
MTUPower
05-30-2008, 08:37 PM #4

any news? are they solid or vented?


2005 CDI heavily modified 1984 300TD - Myna pump/TMIC/enlarged PC's/HX30Super/W126 II front brakes/Vogtland springs/EGT +Boost gauges/H4 Hella's

bgkast
VGT-Intercooled

325
05-31-2008, 07:34 PM #5
I'm don't remember if they are vented or not. There are no markings on the face of the rotors though.
bgkast
05-31-2008, 07:34 PM #5

I'm don't remember if they are vented or not. There are no markings on the face of the rotors though.

EuroDriver
Naturally-aspirated

11
10-01-2008, 01:03 PM #6
Summit Racing <!-- w --><a class="postlink" href="http://www.summitracing.com">www.summitracing.com</a><!-- w --> carries cross drilled rotors for the back of a w123 but not the front. Check them out.
EuroDriver
10-01-2008, 01:03 PM #6

Summit Racing <!-- w --><a class="postlink" href="http://www.summitracing.com">www.summitracing.com</a><!-- w --> carries cross drilled rotors for the back of a w123 but not the front. Check them out.

Telecommbrkr
Soon to be mod'ing......

97
10-01-2008, 09:15 PM #7
I have been coming across these on e-bay for a while:

<!-- m --><a class="postlink" href="http://cgi.ebay.com/ebaymotors/BENZ-300-W116-W126-85-87-Front-Drill-Slot-Brake-Rotors_W0QQitemZ320300441280QQcmdZViewItem?hash=item320300441280&_trkparms=72%3A727%7C39%3A1%7C65%3A12%7C240%3A1318&_trksid=p4506.c0.m245">http://cgi.ebay.com/ebaymotors/BENZ-300 ... 06.c0.m245</a><!-- m -->

And these:

<!-- m --><a class="postlink" href="http://cgi.ebay.com/ebaymotors/Mercedes-Benz-300SD-SDL-86-87-W116-W126-slot-F-R-rotors_W0QQitemZ140270111505QQcmdZViewItem?hash=item140270111505&_trkparms=72%3A727%7C39%3A1%7C65%3A12%7C240%3A1318&_trksid=p4506.c0.m245">http://cgi.ebay.com/ebaymotors/Mercedes ... 06.c0.m245</a><!-- m -->

Any comments on these guys and their products?

'Jurgen' - 1982 300sd cream paint with palimino MB tex interior. Now running with new cooling systemBig Grin.......discovered oil cooler has pinhole @#$%@Angry Nitrile gloves back on......

'Otto' - 1985 300sd anthracite? grey/silver? with grey leather interior. (heated front seats!!!!Cool ) Euro headlights

Mods are in the works...
Telecommbrkr
10-01-2008, 09:15 PM #7

I have been coming across these on e-bay for a while:

<!-- m --><a class="postlink" href="http://cgi.ebay.com/ebaymotors/BENZ-300-W116-W126-85-87-Front-Drill-Slot-Brake-Rotors_W0QQitemZ320300441280QQcmdZViewItem?hash=item320300441280&_trkparms=72%3A727%7C39%3A1%7C65%3A12%7C240%3A1318&_trksid=p4506.c0.m245">http://cgi.ebay.com/ebaymotors/BENZ-300 ... 06.c0.m245</a><!-- m -->

And these:

<!-- m --><a class="postlink" href="http://cgi.ebay.com/ebaymotors/Mercedes-Benz-300SD-SDL-86-87-W116-W126-slot-F-R-rotors_W0QQitemZ140270111505QQcmdZViewItem?hash=item140270111505&_trkparms=72%3A727%7C39%3A1%7C65%3A12%7C240%3A1318&_trksid=p4506.c0.m245">http://cgi.ebay.com/ebaymotors/Mercedes ... 06.c0.m245</a><!-- m -->

Any comments on these guys and their products?


'Jurgen' - 1982 300sd cream paint with palimino MB tex interior. Now running with new cooling systemBig Grin.......discovered oil cooler has pinhole @#$%@Angry Nitrile gloves back on......

'Otto' - 1985 300sd anthracite? grey/silver? with grey leather interior. (heated front seats!!!!Cool ) Euro headlights

Mods are in the works...

ForcedInduction
Banned

3,628
10-02-2008, 05:26 AM #8
Telecommbrkr http://cgi.ebay.com/ebaymotors/BENZ-300-...06.c0.m245

I would doubt their quality/fit considering the W116 was out of production 5 years before 1985.
ForcedInduction
10-02-2008, 05:26 AM #8

Telecommbrkr http://cgi.ebay.com/ebaymotors/BENZ-300-...06.c0.m245

I would doubt their quality/fit considering the W116 was out of production 5 years before 1985.

bgkast
VGT-Intercooled

325
11-03-2008, 06:34 PM #9
EuroDriver Summit Racing <!-- m --><a class="postlink" href="http://www.summitracing.com">http://www.summitracing.com</a><!-- m --> carries cross drilled rotors for the back of a w123 but not the front. Check them out.


So they do: <!-- m --><a class="postlink" href="http://store.summitracing.com/partdetail.asp?autofilter=1&part=PWR%2DEBR%2D034L&N=700+4294925045+4294905361+4294899859+4294922533+115&autoview=sku">http://store.summitracing.com/partdetai ... toview=sku</a><!-- m -->
bgkast
11-03-2008, 06:34 PM #9

EuroDriver Summit Racing <!-- m --><a class="postlink" href="http://www.summitracing.com">http://www.summitracing.com</a><!-- m --> carries cross drilled rotors for the back of a w123 but not the front. Check them out.


So they do: <!-- m --><a class="postlink" href="http://store.summitracing.com/partdetail.asp?autofilter=1&part=PWR%2DEBR%2D034L&N=700+4294925045+4294905361+4294899859+4294922533+115&autoview=sku">http://store.summitracing.com/partdetai ... toview=sku</a><!-- m -->

garage
Bush Taxi

893
10-01-2010, 12:19 PM #10
Has anyone else ordered drilled/slotted rotors for the w123 of ebay?
It seems as if there is tons of them on there, both front and rears.
Its questionable because its ebay...but damn that would be sweet to have on all 4 corners, along with stainless brake lines.

1987 300D: EGR Delete, ARV Delete, Cold Air Intake...
garage
10-01-2010, 12:19 PM #10

Has anyone else ordered drilled/slotted rotors for the w123 of ebay?
It seems as if there is tons of them on there, both front and rears.
Its questionable because its ebay...but damn that would be sweet to have on all 4 corners, along with stainless brake lines.


1987 300D: EGR Delete, ARV Delete, Cold Air Intake...

Captain America
Boostin' & Roostin'

2,221
10-01-2010, 03:36 PM #11
Word on the street is that cross drilled rotors wear the pads faster which is something thats not fun on a daily driven car...


1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag

AX15 Jeep Trans swap in progress....

Captain America
10-01-2010, 03:36 PM #11

Word on the street is that cross drilled rotors wear the pads faster which is something thats not fun on a daily driven car...



1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag

AX15 Jeep Trans swap in progress....

garage
Bush Taxi

893
10-01-2010, 03:48 PM #12
Like how much faster are we talking??
That makes sense..i guess i never thought about that.

1987 300D: EGR Delete, ARV Delete, Cold Air Intake...
garage
10-01-2010, 03:48 PM #12

Like how much faster are we talking??
That makes sense..i guess i never thought about that.


1987 300D: EGR Delete, ARV Delete, Cold Air Intake...

Captain America
Boostin' & Roostin'

2,221
10-01-2010, 05:10 PM #13
I have no idea, I've never run drilled or slotted rotors. But yeah they would act like a chease crater on the pads I guess...


1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag

AX15 Jeep Trans swap in progress....

Captain America
10-01-2010, 05:10 PM #13

I have no idea, I've never run drilled or slotted rotors. But yeah they would act like a chease crater on the pads I guess...



1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag

AX15 Jeep Trans swap in progress....

bmwpowere36m3
K26-2

29
10-01-2010, 06:45 PM #14
Cross-drilled rotors are totally pointless for the most part... too many specifics to get into. Especially on a DD, they are unnecessary and second even if cheaper on eBay I wouldn't trust my brakes/life to cheap chinese rotors.

Cross-drilled rotors
* more expensive
* pads wear faster
* rotors tend to crack and last less
* questionably look better

'80 MB 300CD, "Beauty"

&

'98 BMW M3, The BEAST
bmwpowere36m3
10-01-2010, 06:45 PM #14

Cross-drilled rotors are totally pointless for the most part... too many specifics to get into. Especially on a DD, they are unnecessary and second even if cheaper on eBay I wouldn't trust my brakes/life to cheap chinese rotors.

Cross-drilled rotors
* more expensive
* pads wear faster
* rotors tend to crack and last less
* questionably look better


'80 MB 300CD, "Beauty"

&

'98 BMW M3, The BEAST

garage
Bush Taxi

893
10-01-2010, 06:47 PM #15
Well that all makes sense.
That idea is out the window then i guess.

1987 300D: EGR Delete, ARV Delete, Cold Air Intake...
garage
10-01-2010, 06:47 PM #15

Well that all makes sense.
That idea is out the window then i guess.


1987 300D: EGR Delete, ARV Delete, Cold Air Intake...

ForcedInduction
Banned

3,628
10-02-2010, 05:44 AM #16
Vented rotors are far better. Drilling is for letting out the brake pad gasses, which only happens when the brakes get very hot. Unless you're multi-lap racing or dragging your brakes down the mountains I can't see any benefit.

In any case, diameter > holes/slots. The Big Brake upgrade using 1986+ W126 rotors/calipers has far better results if you have 15"+ wheels to put on it.
This post was last modified: 10-02-2010, 05:45 AM by ForcedInduction.
ForcedInduction
10-02-2010, 05:44 AM #16

Vented rotors are far better. Drilling is for letting out the brake pad gasses, which only happens when the brakes get very hot. Unless you're multi-lap racing or dragging your brakes down the mountains I can't see any benefit.

In any case, diameter > holes/slots. The Big Brake upgrade using 1986+ W126 rotors/calipers has far better results if you have 15"+ wheels to put on it.

garage
Bush Taxi

893
10-02-2010, 11:25 AM #17
(10-02-2010, 05:44 AM)ForcedInduction Vented rotors are far better. Drilling is for letting out the brake pad gasses, which only happens when the brakes get very hot. Unless you're multi-lap racing or dragging your brakes down the mountains I can't see any benefit.

In any case, diameter > holes/slots. The Big Brake upgrade using 1986+ W126 rotors/calipers has far better results if you have 15"+ wheels to put on it.

Well two seperate times once in a w116 and most recently in my 240D, I was coming down from from a VERY twsity, switchback filled, steep road from the Mt. Baldy ski lifts near my house. The w116 i just noticed extreme brake fading, and in the 240 i thought my car was on fire the drivers side front brake was smoking so bad.
There was no dragging the brakes down the hill, i was in a low gear but the drive up and down really pushes these cars to there limits.

Im definetly gonna go with the 15inch rotors then. These can only be put on the front right?
The calipers mount right up with stock hardware?

1987 300D: EGR Delete, ARV Delete, Cold Air Intake...
garage
10-02-2010, 11:25 AM #17

(10-02-2010, 05:44 AM)ForcedInduction Vented rotors are far better. Drilling is for letting out the brake pad gasses, which only happens when the brakes get very hot. Unless you're multi-lap racing or dragging your brakes down the mountains I can't see any benefit.

In any case, diameter > holes/slots. The Big Brake upgrade using 1986+ W126 rotors/calipers has far better results if you have 15"+ wheels to put on it.

Well two seperate times once in a w116 and most recently in my 240D, I was coming down from from a VERY twsity, switchback filled, steep road from the Mt. Baldy ski lifts near my house. The w116 i just noticed extreme brake fading, and in the 240 i thought my car was on fire the drivers side front brake was smoking so bad.
There was no dragging the brakes down the hill, i was in a low gear but the drive up and down really pushes these cars to there limits.

Im definetly gonna go with the 15inch rotors then. These can only be put on the front right?
The calipers mount right up with stock hardware?


1987 300D: EGR Delete, ARV Delete, Cold Air Intake...

ForcedInduction
Banned

3,628
10-02-2010, 12:17 PM #18
(10-02-2010, 11:25 AM)garage The calipers mount right up with stock hardware?

All you need are the rotors, calipers, backplates and 15" or larger wheels.
ForcedInduction
10-02-2010, 12:17 PM #18

(10-02-2010, 11:25 AM)garage The calipers mount right up with stock hardware?

All you need are the rotors, calipers, backplates and 15" or larger wheels.

garage
Bush Taxi

893
10-02-2010, 01:22 PM #19
But this is only for the fronts right?

Isnt the breaking power somthing like 70%front/30%rear on these cars?

1987 300D: EGR Delete, ARV Delete, Cold Air Intake...
garage
10-02-2010, 01:22 PM #19

But this is only for the fronts right?

Isnt the breaking power somthing like 70%front/30%rear on these cars?


1987 300D: EGR Delete, ARV Delete, Cold Air Intake...

ForcedInduction
Banned

3,628
10-02-2010, 10:49 PM #20
Yes, there are no known upgrades for the rears.
ForcedInduction
10-02-2010, 10:49 PM #20

Yes, there are no known upgrades for the rears.

Captain America
Boostin' & Roostin'

2,221
10-02-2010, 11:10 PM #21
The braking power is really great on these cars. I can lock all four wheels on dry asphalt. Its just the fade that it a problem... anyone tried some brake ducts for better/faster cooling?


1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag

AX15 Jeep Trans swap in progress....

Captain America
10-02-2010, 11:10 PM #21

The braking power is really great on these cars. I can lock all four wheels on dry asphalt. Its just the fade that it a problem... anyone tried some brake ducts for better/faster cooling?



1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag

AX15 Jeep Trans swap in progress....

garage
Bush Taxi

893
10-02-2010, 11:53 PM #22
(10-02-2010, 10:49 PM)ForcedInduction Yes, there are no known upgrades for the rears.

Well i mean ive seen drilled, slotted/vented, and slotted/drilled rotors for the rear.
I would be open to putting vented/slotted rotors on the rear while upgrading the fronts to 15inch.


1987 300D: EGR Delete, ARV Delete, Cold Air Intake...
garage
10-02-2010, 11:53 PM #22

(10-02-2010, 10:49 PM)ForcedInduction Yes, there are no known upgrades for the rears.

Well i mean ive seen drilled, slotted/vented, and slotted/drilled rotors for the rear.
I would be open to putting vented/slotted rotors on the rear while upgrading the fronts to 15inch.


1987 300D: EGR Delete, ARV Delete, Cold Air Intake...

jonbobshinigin
Holset

292
10-06-2010, 09:44 PM #23
Some input on cross-drilled rotors: I put Zimmerman Cross drilled, and Akebono Euro brakes on my 1987 300TD 2 years/25k+ ago and the rotors hardly have a lip and the brake pads look new. My stopping power is plenty sufficient, though not quite as good as the later 124 dual piston calipers. I recently put Stainless Lines on the rear and that made it a bit more firm. If I brake hard however, I have noticed a bit of a shimmy near the end. Rear right caliper was replaced recently as well.

1987 300TDT - 260,000 Miles
>>275HP OM603 Project Profile here<<

jonbobshinigin
10-06-2010, 09:44 PM #23

Some input on cross-drilled rotors: I put Zimmerman Cross drilled, and Akebono Euro brakes on my 1987 300TD 2 years/25k+ ago and the rotors hardly have a lip and the brake pads look new. My stopping power is plenty sufficient, though not quite as good as the later 124 dual piston calipers. I recently put Stainless Lines on the rear and that made it a bit more firm. If I brake hard however, I have noticed a bit of a shimmy near the end. Rear right caliper was replaced recently as well.


1987 300TDT - 260,000 Miles
>>275HP OM603 Project Profile here<<

Silberpfeil
Slowly Sideways

85
10-10-2010, 12:12 PM #24
Anybody try Pagid pads?

What kinds of pads do people like?

"Molly" Jan. '84 black/tan 300d 180k miles, two owner car
Silberpfeil
10-10-2010, 12:12 PM #24

Anybody try Pagid pads?

What kinds of pads do people like?


"Molly" Jan. '84 black/tan 300d 180k miles, two owner car

 
  • 0 Vote(s) - 0 Average
Users browsing this thread:
 1 Guest(s)
Users browsing this thread:
 1 Guest(s)