Who said that drilled disks don't crack through the drill holes?
20 April 2002, 05:58 PM
#1
Scooby Regular
Thread Starter
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
My Black Diamond drilled disks (5000 miles no appreciable wear, no lip on them) have cracked - THROUGH THE DRILL HOLES.
I wanted grooved ones but Falkland didn't have them and said drilled ones don't crack. Well they have after only one track day.
I think the Mintex 1155 pads are great and good value, and I only wore under half a pad.
Do grooved disks fare a lot better? Any suggestions?
I wanted grooved ones but Falkland didn't have them and said drilled ones don't crack. Well they have after only one track day.
I think the Mintex 1155 pads are great and good value, and I only wore under half a pad.
Do grooved disks fare a lot better? Any suggestions?
20 April 2002, 07:25 PM
#2
Scooby Regular
Join Date: Mar 2001
Posts: 1,809
Likes: 0
Received 0 Likes
on
0 Posts
john
ive heard alot about drilled discs giving cracks...
the stress will concentrate around the drilled holes I think...
look at the bottom of http://www.scoobynet.co.uk/bbs/threa...threadid=88863
[Edited by SCOSaltire - 4/20/2002 7:28:15 PM]
ive heard alot about drilled discs giving cracks...
the stress will concentrate around the drilled holes I think...
look at the bottom of http://www.scoobynet.co.uk/bbs/threa...threadid=88863
[Edited by SCOSaltire - 4/20/2002 7:28:15 PM]
20 April 2002, 09:38 PM
#4
Scooby Regular
Join Date: Jan 1999
Posts: 2,846
Likes: 0
Received 0 Likes
on
0 Posts
John, the only units most likely NOT to crack are the Porsche disc. Because the holes are cast in. Most of these aftermarket discs are drilled and grooved after casting.
Grooved can also crack, but driller are most likely to suffer it.
Dan
Grooved can also crack, but driller are most likely to suffer it.
Dan
22 April 2002, 01:54 AM
#6
Scooby Regular
Join Date: Aug 2000
Location: Where age and treachery reins over youthful exuberance
Posts: 5,275
Likes: 0
Received 0 Likes
on
0 Posts
It depends what you want them for.
It is unrealistic to expect cheap replacement discs, over-branded by some marketing company, to perform much better than the standard discs.
Pagid discs are good (ScoobySport) and so are the official Prodrive uprgrade discs for 16in wheels, made by Alcon and with turbine vanes to improve cooling. Better still are Godspeeds with alloys bells to prevent warping.
If you're a track day junkie, you may find that only the £1,500-plus brake upgrades will keep you happy (and safe)
Richard.
It is unrealistic to expect cheap replacement discs, over-branded by some marketing company, to perform much better than the standard discs.
Pagid discs are good (ScoobySport) and so are the official Prodrive uprgrade discs for 16in wheels, made by Alcon and with turbine vanes to improve cooling. Better still are Godspeeds with alloys bells to prevent warping.
If you're a track day junkie, you may find that only the £1,500-plus brake upgrades will keep you happy (and safe)
Richard.
Trending Topics
01 May 2002, 07:56 PM
#9
Scooby Regular
Join Date: Sep 2001
Posts: 252
Likes: 0
Received 0 Likes
on
0 Posts
"All drilled rotors will crack sooner or later if overheated"
http://www.rennsportsystems.com/~porsche/2c.html
I've done it on the road in a narrow body 993
http://www.rennsportsystems.com/~porsche/2c.html
I've done it on the road in a narrow body 993
Thread
Thread Starter
Forum
Replies
Last Post
Sub-Subaru
General Technical
1
28 September 2015 12:47 PM