Brake mods

[twinxrs]

Hi All

Just had my Phase II installed so I'm looking at a modest brake upgrade...

I'm going to put the DBA 4000 series slotted on the front, with the QFM RB74 pads.

Do I need to do anything on the rear of the car ? (I was planning on leaving the standard rotors on the back....)

Will changing the front setup upset the front/rear brake balance ?

According to this AutoSpeed article there's a matching QFM compound for the rear brakes (RB62), would it be worth throwing a set of these into the car at the same time ?

Thanks,

Scott

[Geeseman]

H I Scott,

You can put them on the front and rear. That's the best thing to do for you power level.

Steve

[Cro]

  twinxrs said:

Hi All

Just had my Phase II installed so I'm looking at a modest brake upgrade...

I'm going to put the DBA 4000 series slotted on the front, with the QFM RB74 pads.

Do I need to do anything on the rear of the car ? (I was planning on leaving the standard rotors on the back....)

Will changing the front setup upset the front/rear brake balance ?

According to this AutoSpeed article there's a matching QFM compound for the rear brakes (RB62), would it be worth throwing a set of these into the car at the same time ?

Thanks,

Scott

Scott,

There is no point in putting pads that can only handle 300 - 450 degree's on a rotor that can handle 750 degree's.

I'd get a more agressive pad, such as ferodo formula to aid in the stopping process.

Ultimatly I'd go bigger brakes all round if I were you. Maybe not to the extent that Mick and Brian have, but something along those lines.

[Trumpy]

Not everyone is a nutter that feels the need to heat road car brakes to 750 deg

Probably best to change the rear pads to a matching compound, even if you are only replacing the front rotors and leaving stock rear rotors in place. That is what I did with mine, and it was fine through several track days, and normal road use.

[Geeseman]

I'd use bendix ultimates (hey, I did ) they are pretty good and combined with the 4000 rotors provide good stopping power for stage 2. Stage 3? Well they are proving a little scarey at the moment

[dingah2]

Twin:

Have undertaken the exact set-up you propose whcih is VERY cost-effective upgrade. Took great care with bed-in procedure - no squeal almost no dust (same as standards) have bedded in really evenly. Discussed options at length with various OEMs prior to upgrade. DBA recommended the setup. Am impressed, the hotter they get the more they seem to hold on, have not induced fade yet, left the rears as is (as per DBA recommendation) they then said either Comp 02s or Lucas would be good rear partners when replacing the rear pads. Both Ferodos and Ultimates are also good pad options except for the copious amounts of dust produced. Also flushed through with Penrite Comp synthetic fluid.

Concerning the temp of the RB74s someone is using eroneous info ...

QUOTE:

RB74 - This is a pad that's been well proven in sprint races under cars such as HSVs, WRXs and other turbo cars. Creating little wear, it gives a coef of 0.43 at up to 500 degrees C. It also works well on the street, with very good low temperature effectiveness.

Dingah

[Benny]

  Trumpy said:

Not everyone is a nutter that feels the need to heat road car brakes to 750 deg

Probably best to change the rear pads to a matching compound, even if you are only replacing the front rotors and leaving stock rear rotors in place. That is what I did with mine, and it was fine through several track days, and normal road use.

Got it in one.

If you wanna put Bendix in your car then I'll give you a set for nothing that I have under the house. Why are they under my house I hear you say because there good for nothing.

[1axr]

put 4000 series on front and rear to keep the car looking as it should.

it does look a bit funny with only slotted disks on the front.

I used ferodo formula on front and rear, they stop well and only slightly less dust than the standard pads.

[Guest]

Ive got bendix on my premos,nothing wrong with them,dust factor and squeel.

I will try QFMs next though.

vik

[Cro]

  Trumpy said:

Not everyone is a nutter that feels the need to heat road car brakes to 750 deg  

Then whats the point in getting 4000 series rotors when the long life would be suited better to the lower quality pads.

A fair whack cheaper too.