well guys, this afternoon i upgraded my brakes from a pair of u12 slotted dba rotors to a set of u13 280mm rotors with attesa twin piston calipers to match. here is a brief write up on what went on..
just to clarify for everyone's information, contrary to what has been posted by some members recently, these brakes are in fact a direct bolt on upgrade!
first up you want to loosen your wheel nuts, and jack up the car.
then you want to remove your wheel.. simple stuff so far.
from there, you need to remove your standard caliper. there are two 19mm bolts holding it to the strut assembly. once these are removed, the brake rotor will come straight off.
the stock rotor is sitting on the ground, the stock caliper is resting on the dust coveri had to make some modifications with a hammer and an angle grinder so the standard dust covers didnt foul the disc. i advise you get a set of u13 dust covers to suit your new brakes.
here you can see the 280mm u13 rotor being test fitted to the hub. yes, rusty rotors, its just a bit of surface rust, these have since been cleaned up and look brand new.
here is the u13 caliper installed over the u13 rotor. use the same mounting points as the standard caliper used. ensure you tighten the bolts sufficiently (refer to your service manual for torque settings)
you will have to fit your brake line to the u13 caliper. you need a 12mm spanner to undo the bolts, they're the same fitting. attach the brake line to your u13 caliper. be prepared to have brake fluid spew out on you.
install pads as per the pad replacement tech article by tas. its the same procedure, just different part numbers.
check everything is tight. bleed the system as per tas' abovementioned article, re-fit your wheel, lower your car back onto the ground.
and there you have it, the finished product.
take your car for a spin. be gentle on it. test your new brakes and make sure everything is finctioning correctly. enjoy.
all up, this was a no hassle adventure into brake upgrading. took me and my dad about 4 hours to do. braking is a good improvement and i pull up much quicker, although i think its an unfair comparrison because i have gone from slotted dba's with metal pads to standard rotors with organic pads, in a few months when i upgrade the pads and rotors, the improvements should be quite good.
recommend it to anyone upgrading that wants a simple upgrade with no stuffing around with machining down discs.
big thanks to my dad for helping, and counterpunch for supplying the brakes.