rotor fin direction ?
Thread Starter
Burning Brakes
Joined: Oct 2000
Posts: 1,241
Likes: 0
From: phila. pa .usa
rotor fin direction ?
gotta a set of drilled& slotted rotors off ebay,stopchek is the vendor,1 rotor, rightrear cooling fin leading edge is goin forward compared to the other 3 ,the stock ones also had the top edge follwing the bottom when goin forward ,will the 1 rotor run hotter or wont it matter ?
Le Mans Master
Joined: Sep 1999
Posts: 7,393
Likes: 7
From: Los Angeles CA
Originally Posted by 88sk
gotta a set of drilled& slotted rotors off ebay,stopchek is the vendor,1 rotor, rightrear cooling fin leading edge is goin forward compared to the other 3 ,the stock ones also had the top edge follwing the bottom when goin forward ,will the 1 rotor run hotter or wont it matter ?
Burning Brakes
Joined: Dec 2004
Posts: 1,234
Likes: 2
From: New Jersey
In street driving it's not that big a deal. But on the track you will see 10-15% higher temperature on the rotors going in the "wrong" direction.
I'm assuming you have typical curved vanes, not straight vanes or island vanes.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Rotors are directional. If they are not installed on the proper side of the vehicle, airflow will be restricted and cooling will be severely diminished. The vanes on a rotor act like a centrifugal air fan, drawing air from the inside of the rotor and flowing it to the outside. The vanes of a directional rotor should arch back like arms on a pinwheel. On the top side of the rotor, the vanes should curve toward the back of the car.
http://www.stoptech.com/faq/data/faq16.html
HTH
Burning Brakes
Joined: Dec 2004
Posts: 1,234
Likes: 2
From: New Jersey
Let me add that the 10-15% number is at moderate track temperatures.
As the heat rises the differential gets larger. So if your really stressing the brakes the "wrong" rotor can get much hotter than the others.
As the heat rises the differential gets larger. So if your really stressing the brakes the "wrong" rotor can get much hotter than the others.
Thread Starter
Burning Brakes
Joined: Oct 2000
Posts: 1,241
Likes: 0
From: phila. pa .usa
Originally Posted by Mighty-Mouse
In street driving it's not that big a deal. But on the track you will see 10-15% higher temperature on the rotors going in the "wrong" direction.
I'm assuming you have typical curved vanes, not straight vanes or island vanes.
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