crack in rottor.
12-02-2002, 03:30 PM
#1
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crack in rottor. here is 2 pictures of the same crack in a roto tech rotor of mine. is this a problem? could it turn into a problem?
(the white stuff in the hole is soad...i cleaned up the area for the pictures)
<img src="http://www.z06vette.com/gallery/data/500/1648crackedrottor2.jpg" alt=" - " />
<img src="http://www.z06vette.com/gallery/data/500/1648crackedrottor3.jpg" alt=" - " />
(the white stuff in the hole is soad...i cleaned up the area for the pictures)
<img src="http://www.z06vette.com/gallery/data/500/1648crackedrottor2.jpg" alt=" - " />
<img src="http://www.z06vette.com/gallery/data/500/1648crackedrottor3.jpg" alt=" - " />
12-02-2002, 07:15 PM
#2
Re: crack in rottor. No worries on that one. The ones to look out for are the cracks that go right through the rotor. you will be fine, and they pose no threat on driveability or usage <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
12-03-2002, 12:57 AM
#3
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Re: crack in rottor. I'm going to have to disagree with that one. Once a rotor has noticeably cracked, it is best to replace it. It obviously won't get any better, and if it gets much worse, it will just shave your pads down, cause poor braking, or finally shatter and cause you to loose you brakes at the worst moment.
Cross-drilled/slotted rotors are generally NOT reliable and NOT designed for performance. If they see too much heat too quickly, they will crack. There are a few good manufacturers of cross-drilled rotors, such as Baer.
But that's my experience.
-Brad
Cross-drilled/slotted rotors are generally NOT reliable and NOT designed for performance. If they see too much heat too quickly, they will crack. There are a few good manufacturers of cross-drilled rotors, such as Baer.
But that's my experience.
-Brad
12-03-2002, 08:42 AM
#4
Re: crack in rottor. As I said on the other site, these are more stress reliefs that metal failure. They are OK for now, but definitely watch them.
As far as your disagreement with G2_LS1, the Gigliottis have been racing Trans AM series, World Challenge series and Grand AM series events longer than there have been 4th gen F-Bodies.
No offense, but I would have to side with their experience this time
As far as your disagreement with G2_LS1, the Gigliottis have been racing Trans AM series, World Challenge series and Grand AM series events longer than there have been 4th gen F-Bodies.
No offense, but I would have to side with their experience this time
12-03-2002, 08:42 AM
#5
Re: crack in rottor. No, Baer doesnt manufacture a thing as far as rotors go. DBA makes all their stuff, even the eradispeed line.
Those cracks are nothing to worry about. Its these that need to be changed. <img src="http://civic.napalm.net/napalm/chuck/kvr63.jpg" alt=" - " />
I would have no fear of stopping from 150 with the first rotor. The second is a problem. Every race rotor that I have come across (a LOT) has had those tiny surface cracks.
Those cracks are nothing to worry about. Its these that need to be changed. <img src="http://civic.napalm.net/napalm/chuck/kvr63.jpg" alt=" - " />
I would have no fear of stopping from 150 with the first rotor. The second is a problem. Every race rotor that I have come across (a LOT) has had those tiny surface cracks.
12-03-2002, 11:47 PM
#6
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Re: crack in rottor. That's nothing...umm the first picture that is. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
My KVR crossdrilled have probably dozens of spider webs aroud the holes on the fronts. I don't LIKE it but they brake as good now as ever and my KVR pads have no excessive wear. This is on the street but I brake hard and late and no problems to date.
If they see track use then you should obviously keep a closer eye on it.
My KVR crossdrilled have probably dozens of spider webs aroud the holes on the fronts. I don't LIKE it but they brake as good now as ever and my KVR pads have no excessive wear. This is on the street but I brake hard and late and no problems to date.
If they see track use then you should obviously keep a closer eye on it.
12-04-2002, 04:15 PM
#7
Re: crack in rottor. I dissent. STRONGLY.
Rotors are under a lot of heat and stress. I'm sure I'm not the only one who knows that big cracks start with smaller ones, am I? That is a crack in steel, steel that depending on the cars use can get hot enought to glow a dull orange.
If you want to screw around and neglect things, fine. Brakes are not a smart thing to do that with in my humble opinion. Every see a rotor break? It's not pretty and you will have major problems.
Incidentially. This happened because the rotor was drilled. Holes were introduced in a rotor not meant to be drilled, and they act as a stress riser.
Rotors are under a lot of heat and stress. I'm sure I'm not the only one who knows that big cracks start with smaller ones, am I? That is a crack in steel, steel that depending on the cars use can get hot enought to glow a dull orange.
If you want to screw around and neglect things, fine. Brakes are not a smart thing to do that with in my humble opinion. Every see a rotor break? It's not pretty and you will have major problems.
Incidentially. This happened because the rotor was drilled. Holes were introduced in a rotor not meant to be drilled, and they act as a stress riser.
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12-04-2002, 08:17 PM
#8
Re: crack in rottor. Sam, You are correct to say that you need to keep an eye on them, Brakes are no place to skimp, and the rotors will glow red hot when on the track.
However, It is not something that you cant drive around on. You are right, the holes were 1) not cast in place with a radius or 2)Not chamfered, causing the crack. When I go home (at school now) I will take a pic of a rotor that came off a Daytona 24 hour car. One that glowed RED hot, and stopped the car in turn one from 183 off the banking. It has those cracks.
However, It is not something that you cant drive around on. You are right, the holes were 1) not cast in place with a radius or 2)Not chamfered, causing the crack. When I go home (at school now) I will take a pic of a rotor that came off a Daytona 24 hour car. One that glowed RED hot, and stopped the car in turn one from 183 off the banking. It has those cracks.
12-05-2002, 07:35 AM
#9
Re: crack in rottor. </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by mitchntx:
<strong>As I said on the other site, these are more stress reliefs that metal failure. They are OK for now, but definitely watch them.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">
<strong>As I said on the other site, these are more stress reliefs that metal failure. They are OK for now, but definitely watch them.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">