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Old 04-26-2021, 09:57 AM   #1
scoobywagon06
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Default Swapping pads, should I turn my rotors?

I’m not sure if this has been posted for this type of situation but I’m gonna ask.

2004 wrx wagon/ sti swap.

Track day coming up. I have brand new rotors with 2k on them with hawk hp5.0 pads. I’m switching to g-loc pads. Running their street pads for daily and for track swapping to r10s in back and 12s up front.

Rotors are dba4000 t3 club spec rotors on hankook Rs4 r comp tires, stoptech 660 fluid, braided lines and a master cyl brace.

G-loc recommended me turn my rotors for a fresh surface but the rotors are like new and I dont want to turn them and run the risk of them messing my rotors up.

Is their anything I can do to clean my rotors for fresh pads I just want to make sure they bed properly.

Thanks
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Old 04-26-2021, 10:14 AM   #2
snow_bound26
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I'd get them turned. Different pad compound from a different manufacturer. Who knows how they will interact. A fresh bed in is always safe.
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Old 04-26-2021, 12:25 PM   #3
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Quote:
Originally Posted by snow_bound26 View Post
I'd get them turned. Different pad compound from a different manufacturer. Who knows how they will interact. A fresh bed in is always safe.
Should I just stick with hawk then? Maybe a new dtc compound?
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Old 04-26-2021, 12:48 PM   #4
snow_bound26
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I don't use hawk pads so I can't say if the compounds from one of their pads to another will work together. Some companies do this with their pads. Some don't. Call hawk and ask.
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Old 05-11-2021, 01:20 AM   #5
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Yes- definitely get them turned. The pad compounds will be different enough as to interfere with each other, lessen performance, and shorten pad and rotor life. You would be best off with 1 set of pads and rotors for DD and a separate set for track day use. Rotors are not that expensive, just bag them in plastic with a coat of WD-40 between track days to keep them from rusting and they will last a long time.

Watch for cracks on the track day rotors though, as rotors can come apart under high stress sometimes.

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Old 05-11-2021, 01:26 AM   #6
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Old 05-11-2021, 07:22 AM   #7
Norm Peterson
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Turn them. Given that your rotors are slotted it may be better to have this done by grinding rather than cutting with standard brake lathe tool bits.

Hawk pads in HP+ and up tend to be rather abrasive in lower stress, lower-temperature street duty. G-Locs or Carbotechs at least up to '12' are much kinder to your rotors.


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Old 05-11-2021, 08:13 AM   #8
Elbert Bass
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If you are swapping pads back and forth for track days I would suggest getting another set of rotors and marking rotors and pads as sets so each set stays matched for location and inner/outer.
Brake pads and rotors have a process called "seating" where they mate together. Arbitrarily moving positions and swapping pads disrupts that process and will definitely affect braking performance and balance.
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Old 05-11-2021, 10:23 AM   #9
SkrubbinBubb1es
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Yes, you should get the rotors resurfaced.
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Old 05-13-2021, 02:21 PM   #10
Patrick Olsen
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Turning rotors is a waste of useful rotor life and your time and money. Get a Scotchbrite disk for your drill, scuff the faces of the rotors to break up the existing pad transfer layer, bed the new pads in, good to go. I've never had an issue with this method, including shifting from street to track pads. I haven't turned a set of rotors for any of my cars in at least 15 years, probably close to 20.

With that said, I concur with the others who recommended just buying a 2nd set of rotors to install with your track pads.
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