Anti Lag	Blancing	Blow Off Valve	Boost Controller
Catalytic Converter	Clutch	Detonation	Drivetrain
Flywheel	Head Work	Intercooler	Manual Transmission
Rotors	Turbo	Turbo Timer	Water Injection

Cross Drilled-And-Slotted Rotors:

cross drilled - involves drilling rows of holes through the friction surfaces of the rotor.

slotted - involves milling a series of shallow grooves from the centre of the disc to the edge.

The processes are aimed at making the disc lighter, better ventilating and more effective. When the friction surfaces of a rotor are smooth and flat, there is no means of escape for the gasses and dust which build up between pad and rotor. This is not a huge problem in normal motoring, but is an important consideration in high-performance applications. These contaminants tend to "wedge up" and reduce braking performance. The bigger the pads and the higher the braking temperatures, the more likely the problem. The drill holes - which are sometimes called "gas relief openings" - provide an exit route for the dust and gas. The holes are also commonly labelled "cooling holes" because of the improvements they make in this area. Better cooling means less fade during repeated heavy brake applications. Lastly, the holes help dissipate water when driving in poor weather.

Slotting increases the bite of the pads, and so helps pull the car up more quickly. The process doesn't involve removing as much metal as cross-drilling, so it doesn't result in as great a weight saving. However, slotting is even more effective than cross-drilling in combating the problem known as "out-gassing". This is when, at very high braking temperatures, the bonding agents used in some brake pads produce a gas. Under extreme conditions, this gas can create a pneumatic cushion between pad and rotor, giving a driver a normal pedal feel but reducing the amount of friction being generated. The slots pump away this gas and restore full contact. The "micro-shaving" effect of the slots also tends to even out the wear across the brake pad faces, increasing the effective contact area.

I have been recently advised that we should not fit drilled and slotted rotors to our cars if we are going to compete in short track outings such as sprint events. The drilled rotors develop stress cracks if heated quickly (ie without a good gradual warm-up, which is not feasible in sprint event format). Instead, slotted-only rotors are more suitable for such competition use. It is claimed that there is no performance loss due to the missing holes, which are basically a cosmetic addition, with the slots providing virtually all the benefit over standard rotors.

Advantages of sport rotors :

• Less Fade
• Lower Mass
• Better Pad Bite
• Better Ventilation
• Improved Out-gassing
• More even pad wear