Girard@ACGautomotive

Got everything Doug.

I'll get them on the way up to you today. Thanks again!

Girard@ACGautomotive

Bump for some stoppers.

Phil Chow

Can't wait to receive my brakes from Tal & ACG!

Girard@ACGautomotive

L.C.A.D.

Tal,
Can you PM a price for the C63 Stage 2 Street Brake Package (Porterfield R4-S pads) shipped to my location? Just out of a curiosity.
My brakes are really not done yet, neither rotors nor pads, but just checking... thanks!

Girard@ACGautomotive

Of course!

geri1310

My brakes are soon to be serviced I'll give you guys a buzz

Diabolis

Geri - when the time comes, definitely get Tal to ship you a set of pads (no experience with the Porterfields but the MX72s are excellent on the street and can easily withstand some track abuse). He's a great guy and more than willing to help us out here north of the border.

Girard@ACGautomotive

Thanks guys! Always happy to help

Girard@ACGautomotive

Bump! Packages shipping out this week

TAILWAG

Hi Tal,

Do you have a more affordable option than OEM if I solely wish to replace pads for the rears?

I only drive my car on the streets and it is a daily commuter so high-performance is really not a priority for this car.

My rears are about done...I got the warning in the dash about a week ago and visually, the rears are going to need to be replaced soon.

I think my rotors are ok, but I might decide to change those. Can you please offer pricing for rear pads and also for rear pads and rotors?

Thank you.

I have a 2009 C63 by the way.

Angel

Girard@ACGautomotive

The porterfields would be my least expensive option for the rears. They list at $129 for the rear axle.

TAILWAG

Can you give me a delivered price to 66062, Olathe KS?
How much are the rotors?

Girard@ACGautomotive

Bump for brakes.

Forest Jim

Hi, please pm price for Porterfield R4-S Front and Rear Street/Track Brake Pads
I have c63 Coupe with PP
Del to Australia 4006

yellows2k

is there a difference in pads for a std c63 compared to the pp c63 brake setup?

Girard@ACGautomotive

Nope, they use the same caliper so pads are all the same. Rotors are different.

yellows2k

Thanks tal. As far as rotors go, with the pp rotor, u need to change the whole piece correct, u cannot reuse the hat? I'm looking at a true 2 piece unit then to replace?

Rate

Hi,
Could you please PM me a price for the C63 Stage 2 Street Brake Package
Australia, 3000
I have a C63 sedan (FL) with PP
Thanks in advance...

gcm747

I'm just wondering if anyone else has noticed this. I recently purchased brand new brake discs for the front of my C63 from my MB dealer. As I am prepping the car for track work, I had the worn out discs replaced by a race tuning shop (along with other things) and the mechanic noticed something odd. The discs provided by the MB dealer appeared to be two LHS discs. This was clear as the directional venting veins were on the same side. Appropriate for the left but were reversed and very much not appropriate for the RHS. He asked the MB parts manager why this might be and indicated that the discs provided were correct based on part number. Point of all this is that the venting vanes are directional. They must point rearwards in order to work correctly. When fitting the disc on the RHS they point forward. Has anyone else noticed this?

Mort

This is normal for almost all rotors. They are produced the same no matter which side of the car they are put on. You have to buy rotors specifically designed for correct direction of rotation to get that feature. I have read that it does not make a lot of difference and rotors are not air pumps. This is likely only a benefit for the toughest track conditions and not really required otherwise and may be the reason most rotors are not normally directional in design.

Wobble64

Mort is right. Specialized high performance rotors on the other hand have vanes designed for airflow as well as heat conductivity and are directional. My RacingBrake rotors are clearly left and right.

gcm747

Thanks for your response guys. I'm a little confused. My understanding of the AMG product is that it IS a high performance product. As such the standard discs fitted to the C63 definitely DO have directional vanes which means they must be fitted according to a left and right side. In failing to do so a massive heat build up will occur on the side that does not vent heat correctly. I know this to be the case as I have measured very high heat differences between the left and right hand side discs (the RHS is far hotter than the left). The RHS caliper has also completely changed colour as a result of very high heat. I've been using my MY10 C63 for track days and have noticed a massive difference in heat build up on the RHS compared to regular road use. Any further thoughts on this comment regarding brake disc direction...


“For a curved vane internally vented disc (such as is fitted to the C63), the geometry of the vanes dictates the direction of rotation. A curved vane disc must be installed with the vanes running back from the inside to outside diameters in the direction of rotation. Orienting the disc in this manner creates a centrifugal pump. The rotation of the disc causes (hot) air to be pumped from the centre of the disc, through the vanes, and out through the outside diameter of the disc. This greatly enhances the disc’s ability to dissipate heat. Discs installed backwards have very limited cooling.”


Makes a pretty good case in my opinion that the direction of discs on any high performance car is very relevant. Important to note that the standard discs fitted to a C63 feature directional vanes.

gcm747

Shown below is a stock C63 disc. Note the vents for this disc ARE directional. Fitting this disc on the LHS is fine but fitting this disc on the RHS results in vents that are facing forward rather than rearward. It is important to note that angled vents discs do not act as paddles which scoop the air. In reality, the angled vents must face rearward because hot air is firstly drawn into the hub via centrifugal forces and the only way it can be released is through the disc vents and they must face rearward. If they face forward, the hot air cannot be released as it is trying to vent against the direction of (air) flow. If the air can't vent then the discs overheat. Which in turn means the calipers are stressed and brake fluid can boil resulting in awful brake performance. Which I've experienced.

Wobble64

I don't think anybody is arguing the principle. The question is a quantitative one. A disk rotor is a pretty lousy and small fan running at 1000-2000 rpm. How much air does it really move? Those cast iron 'vanes' are far from ideally shaped either. How does that compare to the airflow from the speed of the car moving?

So, many car makers do not want to take on the complexity of having to deal with 2 different rotors. They design their cars for street driving.

Can you quantify the 'massive heat build up on the right' you have observed when tracking? How much hotter did the right rotor get than the left? That would be interesting information to have.