Can cross drilled rotors be machined?

[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.

[svo supporter]

Providing the rotors have enough thickness to be legal after machining, yes they can be done on any brake lathe

[XRDRIFT]

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

[Road Games]

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

[svo supporter]

I've machined plenty of these rotors without them cracking.

[Road Games]

Originally Posted by svo supporter

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.......

[svo supporter]

Originally Posted by DAZZLER351

Far out we get conflicting stories on here.......

Part of the reason behind my Signature

[FLOORED]

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.

[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?

[FLOORED]

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.

[svo supporter]

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