| Author | Message | ||
     Tony Kronkaitis (Gremlin) New Member Username: Gremlin Post Number: 30 Registered: 02-2002 |
I've seen DII rotors that are slotted and have holes drilled through the rotor and others that are slotted and have holes partially drilled into the the rotor. Is one better than the other? Does drilling through effect the strength of the rotor? And if you have one of these rotors on your DII do you find your brakes (OEM pads or aftermarket?) to work better? Or would you have stayed with the unslotted and drilled rotors? THanks in advanced | ||
| Chuck Stroud (Str0ud) New Member Username: Str0ud Post Number: 24 Registered: 02-2004 |
Tony, C.W. says that holes in the rotors leads to cracks forming. Dimpled/Slotted are thought to give most of the benefits of drilling (reduced heat and gas evacuation) without the cracking. -Str0ud | ||
| Jaime Crusellas (Jaime) Senior Member Username: Jaime Post Number: 293 Registered: 05-2003 |
Related question - In our kind of driving (heavy truck, little power) do they make a recognizeable difference?. I always thought of these types of rotors as more of a sporty car type of item. | ||
| Ron L (Ronl) Senior Member Username: Ronl Post Number: 284 Registered: 11-2002 |
"In our kind of driving (heavy truck, little power) do they make a recognizeable difference?" OH Yeah! | ||
| Matt Anderson (Disco01) Senior Member Username: Disco01 Post Number: 362 Registered: 10-2003 |
The problem with drilled rotors would occur if they were really hot and then got plunged into a cold water hole, this type of activity leads to stress cracks around the holes. Slotted are ok in this regard. What happens when you brake is that a layer of hot gas builds up between the rotor and the pad decreasing performance. Slotted rotors allow this gas to escape thus increasing stopping power. Not without a price, however. Here is my theory, you can buy slotted rotors and put them on yourself for cheaper than taking it to the dealer and having them put OE. Rotors on a D2 at least are a piece of cake. D1 is a little more difficult and time consuming, but straight forward nonetheles. Matthew | ||
| Sergei Rodionov (Uzbad) Senior Member Username: Uzbad Post Number: 375 Registered: 08-2003 |
Matt - why D1 is more difficult? | ||
| Phillip Perkinson (Rover4x4) Senior Member Username: Rover4x4 Post Number: 744 Registered: 02-2003 |
maybe something to do with wheel bearings I think. at least I am kinda certain with the D-90 when you take off the I dont know which end, but when you take the rotors off you disturb wheel bearings????? | ||
| Matt Anderson (Disco01) Senior Member Username: Disco01 Post Number: 365 Registered: 10-2003 |
The D1 requires removal of the hub to get the rotor off. It really is not hard to do, just a bit more tedious, while a D2 is nothing but a screw and a good tug. Obviously the caliper has to be removed, but usually the brakes dont have to be bled. If you have overfilled your fluid some will spill out of the reservior if you have to compress the pistons and pull the pads. | ||
| Sergei Rodionov (Uzbad) Senior Member Username: Uzbad Post Number: 378 Registered: 08-2003 |
I see. Thanks. |
