This is topic Resurfacing Slotted Rotors in forum Tech Talk at Northern California Ford Owners  .


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Posted by graylx (Member # 3919) on :
 
Just wondering if it is possible to resurface slotted rotors. I thought I heard awhile back that it is not recommended. But I am not sure. Thought somebody here could give me an answer.

Thanks.
 

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Posted by MR GO FAST (Member # 2088) on :
 
not different than any other rotors. Are they powerslots?
 

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Posted by graylx (Member # 3919) on :
 
I ordered these a long time ago, so I can't really recall for sure. I think they are Hawk's slotted rotors. Didn't use them at the time because I used some FMS 5-lug conversion rotors, so they have been sitting in garage for about a year and a half.

Could you clue me in on Powerslots? Thanks .
 

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Posted by wilit (Member # 3367) on :
 
I know all the cross drilled and slotted rotors I've ever used are undersized from OEM specs. Meaning, once they're at the point where they need to be resurfaced, they're out of minimum spec, and need to be thrown away. I've never used Hawk rotors, so they might be serviceable. You should call the manufacturer and find out. Even though the people on these Mustang forums have an extensive knowledge base, I wouldn't RELY on minimum rotor thickness advice on aftermarket brake rotors I got from a forum. Just my opinion.
 

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Posted by hoppin50 (Member # 3338) on :
 
i used to work at my buddys performance shop and i turned slotted rotors all the time with no problems at all.
 

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Posted by cobraracer46 (Member # 1142) on :
 
turning rotors is not nessary in my opinion. I've replaced the front brake pads on my Cobra a few times with out turning the rotors and I've never had any problems.
 

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Posted by Black94 5.0 (Member # 655) on :
 

quote:

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Originally posted by cobraracer46:
turning rotors is not nessary in my opinion. I've replaced the front brake pads on my Cobra a few times with out turning the rotors and I've never had any problems.

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Posted by MR GO FAST (Member # 2088) on :
 
If there in spec. you dont need to turn them.
The acceptable runout of the rotors can be between .005-.008.(as per Wilwood brake company).

[ May 15, 2004, 11:46 AM: Message edited by: MR GO FAST ]
 

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Posted by stoauto (Member # 2803) on :
 
when i change my pads i ALWAYS turn my rotors, alot of times if you dont, your steering wheel could vibrate when you hit the brakes, squeal, (which is very fucken annoying)vibrate on the freeway, and you could lose over-all braking performance. you need to turn the rotors to break the glaze which was cause by the old pads, so your new pads can 'mate' to the surface properly. PLUS.... it only costs like 20$ to turn rotors. just do it right the first time.
 

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Posted by Black94 5.0 (Member # 655) on :
 

quote:

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Originally posted by MR GO FAST:
If there in spec. you dont need to turn them.
The acceptable runout of the rotors can be between .005-.008.(as per Wilwood brake company).

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It's just like stoauto said...

Rotors can glaze and warp due to heat and still be within spec...You also get the best brake pad-to-rotor contact area with a properly resufaced rotor....
 

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Posted by jcm3man (Member # 3834) on :
 
I can resurface rotors...if you're interested.
 

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Posted by MR GO FAST (Member # 2088) on :
 

quote:

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Originally posted by Black94 5.0:
Rotors can glaze and warp due to heat and still be within spec

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well if they are warped then they wouldnt be in spec right
 

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Posted by MR GO FAST (Member # 2088) on :
 

quote:

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Originally posted by graylx:
Could you clue me in on Powerslots? Thanks . [/QB]

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quote:

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Originally posted by MR GO FAST:

quote:

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Originally posted by Black94 5.0:
Rotors can glaze and warp due to heat and still be within spec

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well if they are warped then they wouldnt be in spec right

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No, they can be warped and still measure within the allowed thickness/spec...

Bascially, if you buy new brake pads resurface your rotor...

 

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Posted by TRUST (Member # 435) on :
 

quote:

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Originally posted by cobraracer46:
turning rotors is not nessary in my opinion. I've replaced the front brake pads on my Cobra a few times with out turning the rotors and I've never had any problems.

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That is why you keep changeing them!
 

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Posted by graylx (Member # 3919) on :
 

quote:

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Originally posted by stoauto:
when i change my pads i ALWAYS turn my rotors, alot of times if you dont, your steering wheel could vibrate when you hit the brakes, squeal, (which is very fucken annoying)vibrate on the freeway, and you could lose over-all braking performance. you need to turn the rotors to break the glaze which was cause by the old pads, so your new pads can 'mate' to the surface properly. PLUS.... it only costs like 20$ to turn rotors. just do it right the first time.

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Yeah, pretty much everytime I change my pads I have the rotors resurfaced at the local shop. Like you mention, I also find the vibration very annoying and resurfacing eliminates this. I thought I heard in the past that you could not resurface slotted rotors. I was just running this by you guys to see if this is a load of B.S. From the responses, I gather that I can resurface slotted rotors w/o any problem.

Thanks for resolving this question, guys. Thanks for the links MR. GO FAST.
 

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