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Joined: Jun 2000
Posts: 43
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Joined: Jun 2000
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Does anyone know the effect on brake pad life of running grooved and or cross drilled rotors? Common sense tells me that you would shorten pad life.
If so approximately how much?
thanks
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Joined: Sep 2000
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It largly depends on how sharp the edges of the holes or slots are. If they are well champhered it should not make much difference.
Personally, I don't care for them. They provide a solution for a problem that no longer exists. They helped clear a barrier layer of gas that could build up with agressive braking on organic brake friction materials. With today's brake compounds, there is no significant gasing of the friction material that needs to be cleared off.
In my opinion, the only reason for drilled or slotted rotors is for looks, but using them creates other problems.
Jim Johnson
98 SVT
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Joined: Sep 2000
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Originally posted by Big Jim:
In my opinion, the only reason for drilled or slotted rotors is for looks, but using them creates other problems. Nail on the Proverbial head!
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Joined: Oct 2000
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Actually, I think there are extreme racing situations (i.e., not autocross, people) where slotting still makes sense, but as Jim said, the racer is accepting a detriment in one part of the operating range to solve a problem at an extreme part of the op range.
"Function before fashion."
'96 Contour SE
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Have to disagree.ALL new pads are 'green' and even F1 teams have sets of 'bedded' pads ready to fit,degassing of bonding compounds still happens until pads are fully bedded in....
V6 MTX
'Don't p**s up my back then tell me it's raining!!!"
'Its only nuts & bolts!'
'If I build it,fix it,upgrade it or modify it...MAYBE they will come....!
Haines Motor Sports Inc,
Dealer for 'Quaife America' & 'Autotech Sport Tuning'
SOLE USA Dealer for the American Axle 'AUSSIE BAR'...
Get a Turbo for you Zetec from HMS Inc...by 'The Demon' ...www.DemonDynamics.co.uk
..don't talk about it DO IT !!!
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Joined: Jun 2000
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No more brake talk till I get my stuff...got it? LOL.
Just call me Judge.
People suck.
Life begins at 170mph...until that point it is just boring.....
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Joined: Sep 2000
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Originally posted by Terry Haines:
Have to disagree.ALL new pads are 'green' and even F1 teams have sets of 'bedded' pads ready to fit,degassing of bonding compounds still happens until pads are fully bedded in.... I was assuming bedded in pads.
Jim Johnson
98 SVT
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Any type of holes or slot will accelerate the pad wear. I offer it as an option only and don't push the drilled deal, but if I don't offer it someone else will. Street- drilled and/or slotted for looks. Track- plain or slotted only.
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