Changing to slotted and drilled rotors

[jbillion]

Hi Everyone,

I am always trolling the G forums because there are not enough people posting and replying in the M forum. I am really jealous of all the mods available for the G. I love the power of my M, but would love it if some exhaust or intake mods were available.

I just purchased slotted and drilled rotors for the back brakes. I have the Nissan OEM brake pads. Should I also purchase slotted and drilled rotors for the fornt, or can I wait till the next time I need pads on the front? I changed the front pads and had the rotors turned in Arpil about 6500 miles ago.

[Omegamerc]

It's really all about how much money you got to toss around. It won't affect your driving at all... just know that drill/slotted get micro fractures from stress and eventually need replacing.

[Sentientbydesign]

Hola,

I disagree with Omega. The life span of the rotors are almost completely dependent upon who made them and how they made them.

I have had some good results with Powerslot. They now make a cryogenically treated rotor that supposedly has higher durability for track use and longevity.

The only thing I've seen with slotted rotors is that the pads wear faster. I have yet to have a set of slotted rotors crack on me. I think I've run 5 pair so far.

You don't need to do the fronts right away, but don't expect any magical results from replacing the rears. The fronts are wear the majority of the braking takes place.

[Omegamerc]

Forgot about cryo treating stuff, yes that makes em immune, but your paying way more on them then conventional run of the mill stuff.

[Sentientbydesign]

Forgot about cryo treating stuff, yes that makes em immune, but your paying way more on them then conventional run of the mill stuff.

Can you buy me a set? Please? lol

[awdjdmtalon]

DO NOT GET SLOTTED AND DRILLED ROTORS! You loose breaking surface w/ both. Less surface are means less brake pad on the rotor to stop the wheels. Slotted is the way to go. They do not crack like drilled rotors do.

FYI it is the tires that stop the car. Not the brakes. Get a good set of tires and you win twice. Once on handling and twice for braking.

[Omegamerc]

Can you buy me a set? Please? lol

ahhh...hmm...no

SBD how lazy can I be to get you that measurement? Time will tell!

[pattyskin]

Almost all your braking is done with your front brakes. If anything, i'd upgrade the front brakes first.....

[Sentientbydesign]

ahhh...hmm...no

SBD how lazy can I be to get you that measurement? Time will tell!

Dude, seriously. Just paypal me some money. I'll send you the damn kit and you can send me pictures.

[C-Kwik]

DO NOT GET SLOTTED AND DRILLED ROTORS! You loose breaking surface w/ both. Less surface are means less brake pad on the rotor to stop the wheels. Slotted is the way to go. They do not crack like drilled rotors do.

While slotted and/or drilled rotors do lose some contact area, you need to consider that the pressure doesn't change. This means, the pounds per square inch between the rotor and pad increases proportionately to the loss of surface area from drilling/slotting. So the amount of friction between the pad and rotor will experience little to no change.

Slotted rotors merely wipe the pads. Drilled rotors provide a substantial fire path during high temperature operation. Anyone who has heated their breaks to the point that the outgassing of pad material prevents pad to rotor contact will appreciate any help in getting some of the gas out from between the rotor and pad (I've done this and the result wasn't pretty).

While cross-drilled rotors do have a higher propensity to crack, good manufacturing techniques can reduce the incidence of it. For most rotors, tghe simple solution is to radius the holes to remove the sharp edges where cracks like to begin. I've tracked 2 sets of cross-drilled Stillen rotors and neither set failed. My understanding is rotors cast with cross-drills are not as prone to crackig either, but are expensive.

[maxnix]

I am always trolling the G forums because there are not enough people posting and replying in the M forum.

Funny he didn't like the ansers he recieved in the M Forum, so comes over here for more diversity!

Some people just want to be told what they beleive by someone else so they can absolved themselves of blame if it goes fubar.

Unfortunately, most truths have a univerality to them.

Good job, guys!

[Sentientbydesign]

How can you waste so much time making useless posts that serve no purpose but to express your total and complete lack of regard for other human beings?

This attitude reminds me of Gorillas who deficate in their own sleeping areas. If you find the nescience of other to be so utterly disgusting that you must reply with indecency, maybe your efforts would be better served in the Mensa group, though I worry that your intelligence quotient might fall more than a few ticks short of their requirements.

[Omegamerc]

This attitude reminds me of Gorillas who deficate in their own sleeping areas.

I pooped in my bed once, and let me tell you. NOT PRETTY.

[tollboothwilley]

Hey, nothing wrong with good quality rotors that are slotted/x drilled.

You just have to be sure of quality.

Oh, and I'd go with fronts as well...I'm going to be swapping mine out very soon...as they are on order. I went with the same company that Gwoods went with...OC autosports. $165 shipped for all 4 rotors...i threw in soem pads which bumped it up to $245.

[jbillion]

Funny he didn't like the ansers he recieved in the M Forum, so comes over here for more diversity!

Some people just want to be told what they beleive by someone else so they can absolved themselves of blame if it goes fubar.

Unfortunately, most truths have a univerality to them.

Good job, guys!

Brian, it wasn't the answers that I didn't like, it was the lack of answers. There are a lot less users in the M forum. Of course, as soon as I posted it over here, i got a few answers in that forum as well.

[jbillion]

I decided to get the front rotors too, since everyone seems to agree that most of the braking power comes from the front. I will be doing the job this weekend and will let everyone know how it goes.

Thanks for all of the feedback.

[Sentientbydesign]

You're always welcome to post over here. Don't mind whinex over there.

[joe603]

The front brakes are used for about 70% of your stopping force (which is why front brakes are much larger than rear). I agree that you should get decent rotors and pads, but I too can honestly recommend cross-drilled rotors.

I HAD to put them on my late model firebird because the OEM rotors could not handle going down a mountain when I lived in Italy. The pedal would be to the floor about halfway down. When I switched to cross-drilled (powerslot too BTW) the problem was eliminated.

[SVTCOBRA]

Joe (and others),Took my wife's 05 G35S with 27K miles to my local Nissan to have the tires rotated (for free) and they pointed out that the REAR brakes were getting thin!!! Yeah, I was shocked!!!Anyway, we went to see my daughter at ASU and noticed coming down the mountain that the brakes were pulsating like the rotors were worped.

When I asked the Nissan parts manager about this he said I should get a good ceramic pad and slotted/drilled rotors for the front and ceramic pads for the rear. Does this sound about right?? He said he could get me the rotors for about $225 on the front......

I think I'm going to replace the rears now with Napa's best ceramics, then later turn the rotors and replace the fronts with ceramics.Then, if the worping comes back (the parts manager thinks it will), then I'll get the drilled rotors....from either Nissan or a place you guys suggest.

Anyways, opinions/comments/recommendations welcome.

Note that this is the wifie's ride and it is not going to be tracked or driven to it's limits, I'm wanting long lasting, great stopping power and confidence that I will not have a failure coming down the mountain!!!

[tollboothwilley]

call OC autosports and ask them to make you some...

These are the ones that gwoods put on his and the same brand I just did.

I got all 4 rotors and posiquiet ceramic pads for $245 shipped.