Brembo floating hardware info
03-11-2005, 11:44 PM
#31
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Originally Posted by quartermile
Just bothers me that they are not cross drilled .. very strange.
http://content2.us.porsche.com/prod/..._cup_996brakes
http://content2.us.porsche.com/prod/..._cup_996brakes
Seriously! Imagine how much weight they'de save if they cross drilled them. At least 50 to 100 grams for all 4. And remember, thats unsprung rotational mass...
I'm thinking of just running without rotors in front. Braking performance might suffer a little, but the turn-in would be like right now!
03-12-2005, 12:09 AM
#32
Nordschleife Master
replacing the fronts alone will offer benefits. I can't see how the brake bias would put innordinate wear on the rears as compared to the fronts. When my front rotors go, replacing just the fronts would be satisfactory to me. Must have and ebrake for the street, imo
03-12-2005, 02:27 AM
#33
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Cross drilled is the cheap way of cooling brakes. Slotted are the best for really cooling rotors.
Right now I am running slotted fronts from DEVEK and drilled OE rear untill the rear slotted 350mm is released. I have been told less them 6 weeks. They are 6lbs lighter then stock and seem to last as long if not longer.
Right now I am running slotted fronts from DEVEK and drilled OE rear untill the rear slotted 350mm is released. I have been told less them 6 weeks. They are 6lbs lighter then stock and seem to last as long if not longer.
03-12-2005, 12:24 PM
#34
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Originally Posted by cosmos
Cross drilled is the cheap way of cooling brakes. Slotted are the best for really cooling rotors.
Right now I am running slotted fronts from DEVEK and drilled OE rear untill the rear slotted 350mm is released. I have been told less them 6 weeks. They are 6lbs lighter then stock and seem to last as long if not longer.
Right now I am running slotted fronts from DEVEK and drilled OE rear untill the rear slotted 350mm is released. I have been told less them 6 weeks. They are 6lbs lighter then stock and seem to last as long if not longer.
03-12-2005, 01:36 PM
#35
Except that none of the cup cars run slotted rotors. In theory slotted may be better, but in practice nobody seems to run slotted or PCCB. Someone please correct me if this is not the case.
03-12-2005, 11:07 PM
#37
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Originally Posted by cosmos
bora,
I only really drive the car in a "spirited fashion", hardly ever on the street.
I only really drive the car in a "spirited fashion", hardly ever on the street.
mounted as opposed to floating.
But I know Devek (from their 928 only days) and Marc/Susan do excellent work.
03-15-2005, 01:30 AM
#39
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Would it be ok to go with these on the fronts and leave the factory on the back?
Why not? I run the Devek slotted on the fronts and the stock drilled on the rear. I am waiting for their 350mm rear to be available. 
03-15-2005, 08:13 PM
#40
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Originally Posted by quartermile
Except that none of the cup cars run slotted rotors. In theory slotted may be better, but in practice nobody seems to run slotted or PCCB. Someone please correct me if this is not the case.
03-15-2005, 09:23 PM
#41
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Originally Posted by cosmos
Cross drilled is the cheap way of cooling brakes. Slotted are the best for really cooling rotors.
Who told you that? Rotors are not slotted to assist with cooling but to allow gas between the rotor and the pad to escape. The brake system is cooled by ducting cool air into the eye of the rotor and/or at the caliper.
03-17-2005, 03:01 AM
#42
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I mentioned in one of my prior posts that there is no floating hardware rattle noises with the Brembos. I was wrong, they do rattle some, especially at slower speeds. The noise is not a problem for me, it is not too loud, softer than the pad squeaking. But if noise bothers you, it might be an issue.
03-17-2005, 02:16 PM
#43
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Greg,
The gases escaping are HOT gases, and help cool the pads, the pads need to have rotors drilled or slotted inorder to let the HOT gases escape.
I was saying that drilling are cheaper then slotting. Thats all.
The gases escaping are HOT gases, and help cool the pads, the pads need to have rotors drilled or slotted inorder to let the HOT gases escape.
I was saying that drilling are cheaper then slotting. Thats all.
03-17-2005, 02:32 PM
#44
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Cos,
Again I wonder where you are getting your info...
Yes, of course the gases are hot. The reason you want them to escape is to allow for better pad to rotor contact. Another reason rotors are drilled and slotted to allow better wet weather braking, same principle as it allows the water/steam to escape.
You may well be correct on the drilling cost vs. the slotting, I don't have experience with either one. The rotors I use on my race car (and the ones your 911 came stock with) are cast drilled. The only thing the slotted have on the stock setup is the longevity.
Again I wonder where you are getting your info...
Yes, of course the gases are hot. The reason you want them to escape is to allow for better pad to rotor contact. Another reason rotors are drilled and slotted to allow better wet weather braking, same principle as it allows the water/steam to escape.
You may well be correct on the drilling cost vs. the slotting, I don't have experience with either one. The rotors I use on my race car (and the ones your 911 came stock with) are cast drilled. The only thing the slotted have on the stock setup is the longevity.
