Can you slot an OEM rotor?

gb66gth

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I just got a set of surplus OEM front rotors Jon B. , for my SRT-10.
My question is, can they be slotted like the Stop-Tech our Euro-Tech rotors? And what kind of things are there to watch out for?
 

CitySnake

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If slotted rotors are factory cast like drilled rotors, then I'd suggest you shouldn't do it. Drilling and slotting would weaken the rotors and cause them to crack prematurely.
 
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gb66gth

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I know that fully drilled rotors are not advised for the track, due to the cracking around the holes. I thought that's why they went with slotted for the track. Aren't the discs on the Stop-Tech and Eurotech two piece rotors cast iron as well?
 

CitySnake

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Quality rotors are cast with holes and slots at the factory, not cast and then drilled. Makes a significant difference.
 
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gb66gth

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Quality rotors are cast with holes and slots at the factory, not cast and then drilled. Makes a significant difference.


Yeah I can see that, the interior leading edges would be much less sharp cast in.
Oh well, I guess I'll just have to wait until I burn through these, which should'nt be too long!:D
 

JonB

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I just got a set of surplus OEM front rotors Jon B. , for my SRT-10.
My question is, can they be slotted like the Stop-Tech our Euro-Tech rotors? And what kind of things are there to watch out for?


At $99/pair for the rotors, you dont have $$ at risk, but if the slots are cut too deeply (or too many) in these OE cast rotors, you will indeed weaken it. Those risks are worse than the $.

That said, if you keep a watchful eye on your rotors after every session, they COULD be slotted a few mm... lots of grassroots race teams do this, totally at their own risk.

But machined slots will NOT make them a Stop-tech 2pc rotor!
 
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gb66gth

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No Jon B you are right, they will not be 2 piece rotors. However slots are slots, if they function properly and don't weaken the rotor too much. Then why not?
 
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