brake rotors on the wrong way?

[Clip]

hey all, i put my slotted rotors on about a year ago in march, but after looking at most of the magazines and pics on the web, im wondering if i have the slots going the wrong way.

im not sure if it would affect the performance (i've been able to brake every time i wanted :icon_bigg ) but i was wondering if i should turn em around.

right now theyre facing so the slots sweep the pads from bottom to top, instead of cutting from top to bottom (like (/ instead of (\ ).

if i do need to switch the lefts and rights, would i just be able to rotate the rotors and leave the pads the way they are, or have they bedded in to that rotor?

thanks

 

[honestabe]

I have mine sweeping so that on the left side they are like this / and on the right side they are like this \. That way they sweep in the direction the car is moving (forward). I don't know how this affects my performance, but in theory, it would work well.

Passenger side


Drivers side


Adam

 

[supraman7mgte]

same here.but i guess it really depends on what the mfg states they should face.
you would think that if the slashes were facing the oncoming pad,it would be too aggressive of a cut. i'm not sure

 

[honestabe]

Mine are mounted according to what Brembo printed on the rotors.

Adam

 

[SupraChrisMk3]

I remember seeing a bbk with slotted rotors being installed on some show on tv, I forget which one. But I do remember them saying that you wanted to have the slots cutting the pad from top to bottom. Like this \. That is how I installed my slotted rotors anyway. As far as any difference in braking performance I don't know if the direction of the slots affects it.

Pic of drivers side front rotor.

 

[mkIIIman089]

it really depends on what the mfg states they should face.

Exactly right.

 

[Frank Rizzo]

Just take your wheels off and there should be a L or an R on the hub of the rotor.

 

[SMP142]

^yeah my rotors had "L" and "R" on them.

 

[SirLoki]

i was always told they work either way, having the slots going against the rotor is suppose to give you a more aggressive bite, but it wears out the pads faster and vice versa..... i was always just more concerned if the brake place gives me 4 left side rotors....

 

[IJ.]

I seriously doubt it makes much difference either way the slots are to vent gasses released under braking so the Pad can contact the rotor.

 

[mkIIIman089]

Modern brake pads create very little in the form of gases. The slots are just more places for the pad to bite into now.

 

[IJ.]

Colin: Sorry any pad will gas when pushed to extremes.

Slots have become a fashion accessory and in normal driving I agree pads shouldn't gas.

As for "biting in" ???

How does that work?

 

[Mr. Sinister]

Check to see if the the vents in the rotors are directional. If they aren't, then it really won't matter.

 

[IJ.]

DBA 4000's right front.

 

[JustAnotherVictim]

Front right on mine.

 

[Da Bushman]

I seriously doubt it makes much difference either way the slots are to vent gasses released under braking so the Pad can contact the rotor.

Correct again, the slots and holes are to vent air and gasses. A flush brake pad should only be making contact with the flat part of the rotor, thats why the slots and holes are reccesed, to minimize cutting into the pad itself.

 

[WhtMa71]

I seriously doubt it makes much difference either way the slots are to vent gasses released under braking so the Pad can contact the rotor.

:thumbup:

 

[mkIIIman089]

As for "biting in" ???

How does that work?

I never said it was anything over .0001".

On street cars you are certainly right, nothing more then a fashion statement.

 

[IJ.]

Colin: The angled slots mean the Pad is always supported across it's width so there can be no cutting action by the slot this might be different with radial slots, again I doubt it would ever be seen as a "good feature" having a Rotor cut a pad.

If there are any surface contaminants the Slots will help remove them.

 

[mkIIIman089]

I'm just telling you what the AP Racing guy told me.