Cross Drilled vs. Slotted Rotors - Moparts Forums

Register Log In Moparts Forums Corners Are Best - Handling Tech Cross Drilled vs. Slotted Rotors

Print Thread

Cross Drilled vs. Slotted Rotors #1299033 09/07/12 03:05 PM 09/07/12 03:05 PM
Joined: Dec 2010 Posts: 12,375 SoCal MuuMuu101 OP I got lucky at Woodward!
MuuMuu101 OP I got lucky at Woodward! Joined: Dec 2010 Posts: 12,375 SoCal	I just have a quick question regarding the difference between cross drilled and slotted rotors. Is there any real benefit of having one over the other besides visual preference? I know some rotors come with both of them. And just for informations sake, how do they enhance the braking experience compared to your standard smooth surfaced rotors?

Re: Cross Drilled vs. Slotted Rotors [Re: MuuMuu101] #1299034 09/07/12 03:23 PM 09/07/12 03:23 PM
Joined: Jan 2003 Posts: 27,486 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,486 So Cal	The holes really should be casted in to the rotor as opposed to drilled. They get cracks coming from the holes. The concept is to release gas trapped under the pad in severe hot brakes. Like after repeated hard stops. In everyday cruising at legal or slightly above legal limits they are don't have a lot of benefit.

Re: Cross Drilled vs. Slotted Rotors [Re: autoxcuda] #1299035 09/07/12 03:32 PM 09/07/12 03:32 PM
Joined: Dec 2010 Posts: 12,375 SoCal MuuMuu101 OP I got lucky at Woodward!
MuuMuu101 OP I got lucky at Woodward! Joined: Dec 2010 Posts: 12,375 SoCal	I was just going to say, "Doesn't drilling holes in the rotors create stress risers?" Now since the slotted rotors are actually thinner in some spots than others, wouldn't that be a primary weak point in the rotor or is the rotor thick enough and over engineered that it wouldn't matter in harsh racing conditions?

Re: Cross Drilled vs. Slotted Rotors [Re: MuuMuu101] #1299036 09/07/12 03:37 PM 09/07/12 03:37 PM
Joined: Jan 2003 Posts: 27,486 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,486 So Cal	Quote: I was just going to say, "Doesn't drilling holes in the rotors create stress risers?" Now since the slotted rotors are actually thinner in some spots than others, wouldn't that be a primary weak point in the rotor or is the rotor thick enough and over engineered that it wouldn't matter in harsh racing conditions? The slots are the safer way to do. Doesn't really weaken a stock setup. Still not necessary for street car.

Re: Cross Drilled vs. Slotted Rotors [Re: autoxcuda] #1299037 09/07/12 03:41 PM 09/07/12 03:41 PM
Joined: Dec 2010 Posts: 12,375 SoCal MuuMuu101 OP I got lucky at Woodward!
MuuMuu101 OP I got lucky at Woodward! Joined: Dec 2010 Posts: 12,375 SoCal	So basically it's all for the look.

Re: Cross Drilled vs. Slotted Rotors [Re: MuuMuu101] #1299038 09/07/12 04:18 PM 09/07/12 04:18 PM
Joined: Jan 2003 Posts: 27,486 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,486 So Cal	Quote: So basically it's all for the look. On a car farting around town that has adaquate brakes. Not neccessary. On an overloaded capacity truck that cooks the brakes, maybe slots or casted in holes would help. On the racetrack, it could help when done properly. But not all race cars use them.

Re: Cross Drilled vs. Slotted Rotors [Re: MuuMuu101] #1299039 09/07/12 04:20 PM 09/07/12 04:20 PM
Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O 70Cuda383 Too Many Posts
70Cuda383 Too Many Posts Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O	Quote: So basically it's all for the look. Unless you're going to be doing road track racing where the brakes can get very hot. Photobucket sucks

Re: Cross Drilled vs. Slotted Rotors [Re: 70Cuda383] #1299040 09/07/12 05:22 PM 09/07/12 05:22 PM
Joined: Dec 2003 Posts: 22,812 Bitopia J jcc If you can't dazzle em with diamonds..
jcc If you can't dazzle em with diamonds.. J Joined: Dec 2003 Posts: 22,812 Bitopia	Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.

Re: Cross Drilled vs. Slotted Rotors [Re: MuuMuu101] #1299041 09/07/12 05:24 PM 09/07/12 05:24 PM
Joined: Jan 2003 Posts: 28,078 Irving, TX feets Senior Management
feets Senior Management Joined: Jan 2003 Posts: 28,078 Irving, TX	One added benefit to the cast in holes is lighter weight. It doesn't remove a lot of weight but anything you do to remove rotating weight without compromising braking ability is a benefit. We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon

Re: Cross Drilled vs. Slotted Rotors [Re: feets] #1299042 09/07/12 05:26 PM 09/07/12 05:26 PM
Joined: Dec 2010 Posts: 12,375 SoCal MuuMuu101 OP I got lucky at Woodward!
MuuMuu101 OP I got lucky at Woodward! Joined: Dec 2010 Posts: 12,375 SoCal	Quote: One added benefit to the cast in holes is lighter weight. It doesn't remove a lot of weight but anything you do to remove rotating weight without compromising braking ability is a benefit. I forgot about that point.

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer, tommoparts

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1