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?
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.
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.
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.
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.
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