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Race Brakes Sydney Street and race performance pad / rotor combinations as well as brake upgrades and Exedy clutch kits. Website Link

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Old 03-07-2010, 03:02 PM   #1
XRDRIFT
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Default Can cross drilled rotors be machined?

Hi, I just brought a full set of 4 Pot Brembos for my BA xr6t, (BA GT-P set up), the rotors look like they need machining. Can the cross drilled rotors be machined, or is there a way to get the braking surfacing flat again?

If so, do you have the services to do it?

Also, are the bolts of the standard brake set up the same used to fit the brembo set up, plus rear brake lines, will they swap over? If they arent/dont fit, do you stock/can supply whats needed?

Cheers Pete.

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Old 03-07-2010, 07:59 PM   #2
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Providing the rotors have enough thickness to be legal after machining, yes they can be done on any brake lathe
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Please read the manual carefully, as the these manufacturers spent millions of dollars making sure it is perfect.....Now why are there so many problems with my car, when I follow the instructions to the letter?....Answer, majority rules round here


Lock me up and throw away the key because I'm a hoon....I got caught doing 59 in a 60 zone
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Old 03-07-2010, 08:10 PM   #3
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Cheers for that, yeah they have. Will probably drop in to RBS at same time to get pads and lines sorted. Hit 2 or 3 birds with one stone while Im there to save hassles
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Old 03-07-2010, 10:42 PM   #4
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Default

Quote:
Originally Posted by XRDRIFT
Hi, I just brought a full set of 4 Pot Brembos for my BA xr6t, (BA GT-P set up), the rotors look like they need machining. Can the cross drilled rotors be machined, or is there a way to get the braking surfacing flat again?

If so, do you have the services to do it?

Also, are the bolts of the standard brake set up the same used to fit the brembo set up, plus rear brake lines, will they swap over? If they arent/dont fit, do you stock/can supply whats needed?

Cheers Pete.
I have a pair here that need machining Pete , but i heard from someone on here they needed to be ground with a stone because machining causes cracking ??

How you do this i have no idea?? And i havn;t had a chance to re-surface any at work because they have all been undersize...

I havn,t done mine yet because i was waiting till someone needed legal rotors( 30mm) and pads(30%) for RWC then i was gonna help them out
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Old 04-07-2010, 01:11 AM   #5
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I've machined plenty of these rotors without them cracking.
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A wheel alignment fixes everything, when it comes to front end issues. This includes any little noises.



Please read the manual carefully, as the these manufacturers spent millions of dollars making sure it is perfect.....Now why are there so many problems with my car, when I follow the instructions to the letter?....Answer, majority rules round here


Lock me up and throw away the key because I'm a hoon....I got caught doing 59 in a 60 zone
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Old 04-07-2010, 08:27 AM   #6
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I've machined plenty of these rotors without them cracking.
Thanks mate i shall do it when the time arises Far out we get conflicting stories on here.......
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Old 04-07-2010, 11:26 AM   #7
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Originally Posted by DAZZLER351
Far out we get conflicting stories on here.......

Part of the reason behind my Signature
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A wheel alignment fixes everything, when it comes to front end issues. This includes any little noises.



Please read the manual carefully, as the these manufacturers spent millions of dollars making sure it is perfect.....Now why are there so many problems with my car, when I follow the instructions to the letter?....Answer, majority rules round here


Lock me up and throw away the key because I'm a hoon....I got caught doing 59 in a 60 zone
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Old 05-07-2010, 09:18 AM   #8
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Quote:
Originally Posted by XRDRIFT
Hi, I just brought a full set of 4 Pot Brembos for my BA xr6t, (BA GT-P set up), the rotors look like they need machining. Can the cross drilled rotors be machined, or is there a way to get the braking surfacing flat again?

If so, do you have the services to do it?

Also, are the bolts of the standard brake set up the same used to fit the brembo set up, plus rear brake lines, will they swap over? If they arent/dont fit, do you stock/can supply whats needed?

Cheers Pete.
Pete they can be machined but we no longer have a disc lathe anymore sorry as these days we find it was hardly ever used.I found that by machining the rotors on the second speed of a 3 speed lathe you would get the best effect and also use a sharp tip.Most people have no idea how to machine crossdrilled or slotted rotors and will tell you they can't be done so as to get a new rotor sale.
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Old 10-07-2010, 09:19 PM   #9
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Whats the starting thickness of the cross drilled rotor when new?

At the moment, the fronts are 30mm, and the rears 27? just would like to know if they would still be legaly usable if machined?
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Old 11-07-2010, 02:22 AM   #10
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While I can't help with the minimum thickness to be legal, cross drilled rotors start at the same thickness as a factory rotor. So where ever you happen to take them to be machined, should know whether they can be safely machined or not to still be legal
__________________
A wheel alignment fixes everything, when it comes to front end issues. This includes any little noises.



Please read the manual carefully, as the these manufacturers spent millions of dollars making sure it is perfect.....Now why are there so many problems with my car, when I follow the instructions to the letter?....Answer, majority rules round here


Lock me up and throw away the key because I'm a hoon....I got caught doing 59 in a 60 zone
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Old 12-07-2010, 09:33 AM   #11
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Quote:
Originally Posted by XRDRIFT
Whats the starting thickness of the cross drilled rotor when new?

At the moment, the fronts are 30mm, and the rears 27? just would like to know if they would still be legaly usable if machined?
Front std is 32mm and Minimum is 30mm at the front - so yours will be undersize
Rear std is 28mm and Minimum is 26mm at the rear - maybe possible to machine and stay with in depending on how much is taken off.
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MATTHEW PEARCE
RACE BRAKES SYDNEY = When you want it to stop

Street to track is what we expertise in

Phone 02 9609 1101

sales@racebrakessydney.com.au

www.racebrakessydney.com.au
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