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Eric (Epuffy)
Member
Username: Epuffy

Post Number: 91
Registered: 07-2003
Posted on Monday, September 08, 2003 - 09:28 pm:   Edit Post Delete Post Print Post

Hi, I was checking out brake options after I drove my friends X5. I won't go into the acceleration on that car versus Disco, and I know the Disco would kick its ass offroad. Anyways, Disco brakes really suck and my parents are scared of driving my car. Does anyone have cross-drilled/vented rotors, and do they really make a big difference? Maybe get rid of some of that Disco brake squeak?

Cheers,
Eric
 

Bazzle (Bazzle)
New Member
Username: Bazzle

Post Number: 7
Registered: 09-2003
Posted on Tuesday, September 09, 2003 - 02:43 am:   Edit Post Delete Post Print Post

I use the slotted ones from DBA in Australia.
They make a big difference.
Less fade, better stopping.

Bazzle
 

Peter Sharratt (Gummikuh)
Member
Username: Gummikuh

Post Number: 218
Registered: 02-2003
Posted on Tuesday, September 09, 2003 - 07:12 am:   Edit Post Delete Post Print Post

Hi Bazzle
Are yours the vented and cross drilled?
Did you have to change the calipers at all? I reckon the cross drilled are a bit thicker, are you using LR pads?
Pete S
 

Brent (Silly_me)
Member
Username: Silly_me

Post Number: 74
Registered: 07-2003
Posted on Tuesday, September 09, 2003 - 07:45 am:   Edit Post Delete Post Print Post

If you get cross drilled they may have a tendancy to crack. Hairline cracks will/can occur unless the brake was forged with the holes rather than drilled. Slotted rotors may be a bit more reliable.

I personally find the brakes on the disco to be satisfactory. Keep in mind it is a 6K pound beast. The front caliper is a dual piston as well and works well IMO.

If you really want to increase your braking performance, the first thing I would do is go to a softer brake pad. It won't last as long and might make your wheels dirty but it'll stop better than harder compound brakes.

There are tons of performance pads out there and everyone loves one brand over another, it's a matter of taste.

HTH
 

Kelly Fristoe (Kfristoe)
Member
Username: Kfristoe

Post Number: 67
Registered: 12-2002
Posted on Tuesday, September 09, 2003 - 09:38 am:   Edit Post Delete Post Print Post

I have slotted and cross drilled rotors with Kevlar pads. Awesome stopping power. No squeaking. The only negative thing that I can come up with is that with the kevlar pads when I hit the brakes when pulling out of the driveway in the morning I really have to mash it. I understand that they need a little warming up before they really work good. By the time I get down the road about a 1/2 mile to the next stop sign they are 100%. I would highly recommend them.
 

Dave Thomas (Davet)
New Member
Username: Davet

Post Number: 10
Registered: 09-2003
Posted on Tuesday, September 09, 2003 - 01:20 pm:   Edit Post Delete Post Print Post

Kelly...what are the brands/models of your rotors and pads?
 

Kelly Fristoe (Kfristoe)
Member
Username: Kfristoe

Post Number: 68
Registered: 12-2002
Posted on Tuesday, September 09, 2003 - 03:34 pm:   Edit Post Delete Post Print Post

Dave,

I ordered them from Atlantic British.

http://www.atlanticbritish.com/ProductList.asp?Category=BRAKES&SubCategory=KITS& Vehicle=D2&PerPage=1&ListType=DETAIL&PartNumber=9542HP

 

Brian Adams (Badams)
New Member
Username: Badams

Post Number: 14
Registered: 02-2003
Posted on Tuesday, September 09, 2003 - 03:40 pm:   Edit Post Delete Post Print Post

Lots of info here:

http://expeditionexchange.com/dba/index.htm
 

Eric (Epuffy)
Member
Username: Epuffy

Post Number: 92
Registered: 07-2003
Posted on Tuesday, September 09, 2003 - 05:25 pm:   Edit Post Delete Post Print Post

I was wondering, why do the brakes have to "warm up" before they really start working? The truck doesn't stop at all when you first stop driving. I've never experienced this with any other car.
 

Eric (Epuffy)
Member
Username: Epuffy

Post Number: 93
Registered: 07-2003
Posted on Tuesday, September 09, 2003 - 05:26 pm:   Edit Post Delete Post Print Post

This may sound dumb, but do the rear brakes stop the truck too? I never understood the purpose of the rear brakes, I always thought they were just for the E-brake.
 

Kelly Fristoe (Kfristoe)
Member
Username: Kfristoe

Post Number: 69
Registered: 12-2002
Posted on Tuesday, September 09, 2003 - 09:15 pm:   Edit Post Delete Post Print Post

I was told that the kevlar needs to be warm before it will "bite" the rotor.
 

Bruce Potier (Brucep)
New Member
Username: Brucep

Post Number: 35
Registered: 06-2003
Posted on Wednesday, September 10, 2003 - 12:28 pm:   Edit Post Delete Post Print Post

I have found that my rear pads wear faster than the front. Not sure of the physics behind the outcome, but after 6 years, it's a 2:1 ratio of replacing rear to front pads.
 

Brian Adams (Badams)
New Member
Username: Badams

Post Number: 15
Registered: 02-2003
Posted on Wednesday, September 10, 2003 - 02:29 pm:   Edit Post Delete Post Print Post

I used to have kevlar pads installed on my Disco and it was my experience that the kevlar pads needed to be warmed up a bit before they really began to bite.

It was most noticable in the morning.
 

Milan (Milan)
Member
Username: Milan

Post Number: 243
Registered: 10-2002
Posted on Thursday, September 11, 2003 - 11:49 am:   Edit Post Delete Post Print Post

Hi guys,
Sorry to hijack the thread a bit but I just bought new rotors and pads from the local parts store. They are OEM replacement rotors made by Brembo for the rear and by ?? for the front. Do you think the Brembos are any good? I also have an extra set of carbon fibre pads. Should I use those or the regular OEM replacement metalic pads I just bought?

Thanks!
 

Milan (Milan)
Member
Username: Milan

Post Number: 250
Registered: 10-2002
Posted on Monday, September 15, 2003 - 11:37 am:   Edit Post Delete Post Print Post

btt
 

Mike Bauer (Mikeb)
Member
Username: Mikeb

Post Number: 111
Registered: 02-2003
Posted on Tuesday, September 23, 2003 - 03:54 pm:   Edit Post Delete Post Print Post

Has anyone taken specific measurements to see how much better slotted/drilled rotors are over stock?

Thanks,
Mike B.
 

mark gomez (Mark)
New Member
Username: Mark

Post Number: 16
Registered: 05-2003
Posted on Tuesday, September 23, 2003 - 04:33 pm:   Edit Post Delete Post Print Post

From my understanding, slotted and drilled rotors are good for sports cars especially when increasing from the stock size to a larger size. If you keep the stock size rotor and slot/drill them you decrease the surface area on the rotor and decrease it's capacity to hold heat (on the track) but the drilling/slotting compensates for this by faster cooling, but at a cost. Most of the (cheaper)cross drilled rotors I've seen on cars develop cracks over time. I personally will go with good pads and stock rotors on the disco. The solid rotors do not seem to warp as easily as vented ones which is an asset for wet off-road driving.

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