jcondo

I have a dba cross/drilled slotted rotors front & back on my AU XR8 for about 2 months. The front have know begun to pulsate during braking. Does anyone know what I can do?

Paul

Machine rotor.Have heard it's better to us old/used good pads on new rotor and vice versa to bed them in? Check out book ''Taming WRX'', on brake's.

HSE2

jcondo- I am thinking about getting the same brakes fitted to my Au XR8. Did you retain the original callipers? Would love to know how you get on with your pulsating problem and what the cause is/was.
Anyone else have any experience with these brakes or can recommend something different?

Martin

Although I havnt used them, ive heard that a common problem with the Cross Drilled DBA Rotors is that they develop cracks between the holes. So if it was my money get just the slotted ones, or go the hole-hog and get the Herrod brake package.

HSE2

Thanks Martin. Any idea how much the Herrod package is?

pmurgatroyd46

Hi,

Cross drilled rotors will always give you a degree of feedback through the steering wheel as they are drill and slotted. Provide that this is not overly severe its not a problem. On motorcycles on heavy applications they can even be heard as the rotors cut the bads to keep them in perfect braking performance.

As far as the cracking around the drill holes according to DBA this is only possible under extreme usage when the brakes are very cold and fitted with full metal pads.

The other issue of slotted rotors, yes they are okay but, they do nothing to release the brake gases that build up between the pads and the rotors under heavy brake loads. Now on a multi piston brake caliper it's not to bad but, on a large single piston caliper you will get some pad distoration and lose some pad surface contact and thus reduce the braking performance.

I hope this helps you out.

Peter.

XR8chic

Hi,

Yeah those cross drilled DBA's do tend to develope cracks around the drill holes.

Someone I know with a Turbo Excel with a chiptorque performance chip (I can hear the laughter) put on a set of cross drilled. He took it out to Eastern creek, and it only made 2 laps, before they cracked.
He now uses DBA slotted, and gets a bit more usage.

:-)
Kelli S

Martin

Sorry, im not sure what the cost of the Herrod package is. But it is pretty extensive.
So id say 4 figures isnt out of the question, heres their website.
http://www.xrclub.com.au/herrod.htm

Brad

I've had DBA "Sports" X-drilled + slotted on my EB2XR8 for 5yrs. Before that I went thru 3x sets of Std rotors so I'm pretty hard on them, they work OK, but do not use STD/XR/GT/Police pads. I use Bendix Metal King (I hear groans) but look...no cracks. I would go Cebco/Herrod if you can afford it though,($4800 approx but you need 17" wheels minimum)For you guys with EF/EL loose the dust sheild as it blocks airflow (the Bendix pads are not as dusty as XR/GT) That might help the rotors to stop warping because of excess heat.

Brad

Whoops...Erratus Dribblus Twatus...Bendix Road King are now known as "Ultimates", sorry. That's how long they've been on the front of mine.