ok this is a kinda stupid question, but ive always thought the direction of the slots on a slotted rotor are supposed to be in the same direction when mounted on the car. the garage i been to have messed up many times trying to get this rotor on, and im not sure if they messed up again. its as if they ordered 2 lefts or 2 rights, its a little wierd. ill try to explain my situation a little more.
lets say im look at the car from the drivers side, the front of the car on the left and the back at the right, the slots will be in this direction: ///
now from the passenger side, front of the car on right, back on the left, the slots will be in this direction: ///
hmm i guess its still a little complicated trying to explain in words. but bottom line is, the slots are not in the same direction, ones clockwise and the other is counterclockwise. it seems odd, but i wanted to make sure before i call the garage up again
i tried search but there was only 1 post on it and was sorta vague, just wanted to make sure. thanks in advance
Both of mine looked like this:
ok i think i gotta a better way to ask this question. if you were take off both the slotted rotors and put them side by side - slots facing you - are the direction of the slots the same, such that rotor1 goes this way /// and rotor2 goes this way /// . or are they opposite such that rotor1 goes this way /// and rotor2 goes this way \\\?
thx again
I dont think it makes a difference, but Im not sure.
Its the same as wheel covers that make the swirly patterns. Take one off the passenger side and one of the drivers side, they are the same.
To help you visualise, if you think of the swirly parts on the wheel covers (and your slotted rotors)... one side "slaps" the ground, while the other "pokes" the ground.
For wheel covers i know this is normal cuz ppl are cheap, and its jsut for looks and to keep @!#$ out of your lugnuts and hub, so it dont matter. As for your rotors, Im not sure, but would assume they're ok.
You're reading my line-break, you are a loser. Lurch <3's the c**k.
slotts are supposed to be different direction like directional tires,
the rotor in the picture would be your driver side. we'll say its slotts are / / /
because of the slotts on the top of the rotor face the direction the pass side should be
\ \ \ . look at the picture imagine the car in motion driving forward down the road it will be turning counter clockwise so the iner most part of the slot will hit the pad first this is
so the brakes can expell any water or built up gases thru the slot as the wheel turns the
water, gases would be forced toward the outside of the rotor and then off the rotors surface. if however the slotts were backward or \ \ \ on the drivers side then the water,
gases coulnt escape the rotor they would be trapped by the rotation of the wheel and in doing so reduce the amount of "bite" the pads would have.
the rotors should be marked right and left but in case there not then referr back to the picture this is the drivers side its slotts run / / / that means your pass side had better be \ \ \ or the guys at the garage should never be allowed to touch your car again.
i hope this helps you
neo. good anlogy both should slap the ground if not you just got poked by the guys at the garage.
Semper Fi SAINT. May you rest in peace.
The only slotted rotors that I have seen go the other way on our cars are in the Baer big brake kits.
jackalope is correct.
Slotted and Cross-Drilled rotor come in lefty and righty. Both swirl the same way.
As you look at the rotor (mounted on the car) on the top; the slots should go from bottom-front to top-back. Front and back on the same side swirl the same way.
Here's a crappy drawing of what it should look like on the driver's side:
yea i thought so, guess ill have to call em back tomorrow.. this garage is so lame. thx for everyones advice
In most cases, I really don't think it matters. Baer slots their rotors such that the outer end of the slot "pokes" rather than "slaps" the ground, to use the terminology used above.
<a href="http://www.wildweasel.ca/images/cars/wm3/02282004SpringSwap/IMG_2604.jpg"><img src="http://www.wildweasel.ca/images/cars/wm3/02282004SpringSwap/IMG_2604_t.jpg"></a>
The reason this matters though has nothing to do with the slots themselves. It has to do with the internal cooling vanes of the rotor. The fine folks at Baer have decided that this is the better configuration for the slotting, so this is how they cut them.
Most other rotors people buy are internally non-directional. That being the case, the direction of the slots is pretty much entirely up to you and it doesn't surprise me to hear they come as matching pairs rather than as a left and right rotor. It's mostly just bling anyway.
zach i have ebc brakes and the rotors are different what brand are you useing that they
both run the same direction? this may be mitch's whole problem.
and by different rotors i mean right and left.
Semper Fi SAINT. May you rest in peace.
Note that Brembo uses the same direction that Baer does.
http://www.tirerack.com/brakes/brakes.jsp?make=Brembo&model=Sport+Slotted+Rotor
Brembo wrote:The slots are angled to use the rotors’ direction of rotation to enhance their performance, which makes the rotors side-specific with left and right side rotors. Brembo Sport slotted brake rotors are sold in axle pairs and the easiest way to verify correct usage is to install the rotors on the side of the vehicle that results in the end of the slot nearest the outer edge of the rotor always contacting the brake pads first.
weasel thanks i didn't know that brembo and baer were different then my ebc's but i guess that huge difference in price does make a difference in the parts you get.
i guess its cause of there cooling vains being directional. and isn't there space between where the pad stops and the center of the brembo and baer brakes? if not
how do they shed water and gases? being that they "poke" at the ground i would think they would tend to push the water towards the center of the hub. but since i'm not an engineer its quite possible i'm looking at the brembos and baers wrong. but the less
expensive non directional vain type sloted rotors work the way i described earlier.
Semper Fi SAINT. May you rest in peace.
Weasel is correct: If the internal vanes are not radial (straight in to out) then you must go by those vanes. Brembo and Baer both have angled vanes, and the slots swirl the opposite way on those brands (so they "poke" the ground). Powerslot has radial vanes, so the slots should swirl like the picture above (so they "slap" the ground).
It makes a difference in that they were designed to operate one way, and not the other. OTOH, this makes relatively little difference, especially considering the difference is only at peak heat dissipation.
If you're not a serious racer, and you got them mostly for the looks (don't be afraid to admit it, mine are really for looks) it makes no difference; except that you might think it looks better one way or the other.
they are powerslot slotted rotors on ebc green stuff pads. looks was one thing, but i had stability in mind. just once having no brake power cause they were too hot is enough to make u want to get more reliable brakes. and i tend to have a lot less braking power in the rain as well.
but anyway, they are powerslot rotors, part 8234psl (and possibly 8234psr). but the thing is, on the bill, they have it written as having ordered two 8234psl parts, instead of one psL and one psR. perhaps they did this for simplicity sake. or maybe theyre just that retarded to order two left sided rotors for my car.
i been looking all over for pictures of cars with slotted/drilled rotors. and oddly enough, ive found quite a few with their drills in opposite directions. maybe direction of drills dont matter like slots?
im really confused right now...
This is mine, powerslot slotted rotors with performance pads.
Just incase yours looks differrance, i have a side shot too.
I got these as a package buy from Gravana. Worth every Penny.
“Facts are meaningless. You could use facts to prove anything that’s even remotely true."
yea they look like that but my concern is having 2 left sided rotors, cause the direction of the slots are opposite. my drivers side slaps the ground while my passenger side pokes. i have mainly 2 questions on my mind, one, is if a set of powerslot left and rights are identical, having both rotor's slots in the same direction when put side by side. and 2, if not, will it jeopardize the edge in hot/wet conditions where i would expect better braking power (will it have more bite on the drivers side than passenger in hot/wet conditions when i brake hard and therefore cause trouble?)
Wild Weasel is right.
Slot direction depends basically on rotor internal cooling vanes. Generally speaking exist 3 types of cooling vanes: curved (directional) and pill and straight (non-directional).
Also take in account that basically slots in a rotor can go up to edge or only stay inside rotor's face. Generally slots that stays inside the rotor's face are used with internal curved vanes looking for vaccum effect and slots in an opposite direction to the vanes. And slots going to the edge are used with non-directional vanes and are used in the rotational direction. That is why PowerSlot name it design, "Vaccu-Slot". It rotational direction creates somekind of vaccum when the disc pad pass above it.
I hope this info help.
Regards,
___________________________
MAKING MY DREAMS A REALITY
Visit my cardomain site !!!
ELIOT. Now.....boosted.
People remember something. Any type of rotor's face work (x-drill, slot or false drilling) are pure cosmetic if you are using stock size and stock material rotors.
High-perf ones like used in the big brake conversion kits with aluminium hats are designed with better materials, x-drilling, slotting and others technniques are used to take off some weigth of the rotors and to allow that harder, high frictional, or racing disc pads, reach it operating temperature faster. Any one have used racing pads in a car for the first 5 five minutes after warm up?
I know that slots and holes avoid some fade effect (cooling effect), but you can obtain same effect using slotted pads. The best bang for the buck for a stock sized brakes is use high quality or frozen rotors and high performance slotted pads (EE or EF is not optimal, FF will be the best for the street and some racing but harder ones will be racing dedicated ones).
That way your pads will last more, out-gas more, your rotors fade less and finally the car stops better.
That is only my impression.
Regards,
___________________________
MAKING MY DREAMS A REALITY
Visit my cardomain site !!!
ELIOT. Now.....boosted.
the powerslot rotors are side specific, I have a set sitting in my room right now, and when they are sitting side by side, the slots go opposite directions.
o yea, the right one is on the left and vice versa. It sounds like you got two of the same side rotors.
yea so i guess now i know for sure. ty for the help guys
The PowerSlot rotors also have a R and L stamped on the rotor itself to differentiate sides.
see.
Semper Fi SAINT. May you rest in peace.
