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  1. #1
    K-Man S's Avatar
    K-Man S is offline Admin & Founder

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    Thumbs up Give me a Brake! - Girodisc Slotted Rotor Install

    Give Me a Brake! - Girodisc Slotted Rotor Installation Guide -We recently received a set of Girodisc slotted brake rotors from our sponsor RSS - Road Sport Supply - and performed both an installation and evaluation of these new rotors. You won't want to miss this article and the results that we achieved after swapping out our factory rotors at 25k miles for a new set of Girodisc rotors and factory Porsche pads.

    Click Here to Read the Article

    We all know that Porsches perform very well but with horspower numbers garnering the lion share of marketing numbers and television ads these days it is very easy to forget that brakes play not only a large role in the overall performance of a vehicle but in safety as well. Brake upgrades are often overlooked by those searching for more power. Individuals focused on power alone are going to have a hard time creating a well balanced street or track car without also considering a brake upgrade.

    Brake upgrades typically aren't cheap, a set of larger rotors and new calipers from some manufacturers can set a buyer back $4k-$5k. I'm happy to report that the Girodisc upgrade from RSS is both cost-effective and now after our review a quantifiable performance improvement. Click the link above to get all of the details!


  2. #2
    blueone's Avatar
    blueone is offline Site Donor
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    Yet another outstanding article from K-Man S. Truly well done. I only have two comments, one a suggestion and one a nearly irrelevant quibble. The hubs show signs of substantial surface rust. If I was doing that job I would have wire brushed the rust off (wear eye protection when doing this!) and brushed the surface with a thin layer of anti-sieze paste.

    My quibble is that the calipers you used are not really the correct tool for measuring rotor thickness. You need a disc brake micrometer to clear the lip and fit into the bottom of the deepest groove. Like I said, a quibble, because with those cracks shown those rotors needed to go.

    Again, very nicely done.
    Last edited by blueone; 01-13-2009 at 11:15 AM.

  3. #3
    K-Man S's Avatar
    K-Man S is offline Admin & Founder

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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    Quote Originally Posted by blueone View Post
    Yet another outstanding article from K-Man S. Truly well done. I only have two comments, one a suggestion and one a nearly irrelevant quibble. The hubs show signs of substantial surface rust. If I was doing that job I would have wire brushed the rust off (wear eye protection when doing this!) and brushed the surface with a thin layer of anti-sieze paste.

    My quibble is that the calipers you used are not really the correct tool for measuring rotor thickness. You need a disk brake micrometer to clear the lip and fit into the bottom of the deepest groove. Like I said, a quibble, because with those cracks shown those rotors needed to go.

    Again, very nicely done.
    I tried to find those type of calipers and no one in town had them, my father didn't even have them in his vast array of tools so I went with what I could obtain. I did my best to bypass the lip on the old rotors by taking measurements from different angles, etc. to see what I could obtain. As for wirebrushing I suppose I could have done that but it would have slowed me down even more and I was running over my time budget as it was. I can always do it later right?

  4. #4
    Jayman's Avatar
    Jayman is offline Porsche Specialist
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    Nice article Ken. I would like to change my stock rotors for the slotted rotors for track events so I tried following your links to RSS but they had no info so I went to GiroDisc and according to their web site they don't make a rotor for the Cayman S or Boxster???

    Girodisc high performance brake products

    any suggestion on what I can expect to pay for these disc's?

  5. #5
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    Quote Originally Posted by Jayman View Post
    Nice article Ken. I would like to change my stock rotors for the slotted rotors for track events so I tried following your links to RSS but they had no info so I went to GiroDisc and according to their web site they don't make a rotor for the Cayman S or Boxster???

    Girodisc high performance brake products

    any suggestion on what I can expect to pay for these disc's?
    http://www.caymanclub.net/cayman-box...r-upgrade.html

    brad
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  6. #6
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    Quote Originally Posted by K-Man S View Post
    I tried to find those type of calipers and no one in town had them, my father didn't even have them in his vast array of tools so I went with what I could obtain. I did my best to bypass the lip on the old rotors by taking measurements from different angles, etc. to see what I could obtain. As for wirebrushing I suppose I could have done that but it would have slowed me down even more and I was running over my time budget as it was. I can always do it later right?
    Or put some shim stock on both sides to make the calipers clear the lip - don't forget to subtract the shim stock thickness!
    GT Silver CS
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  7. #7
    K-Man S's Avatar
    K-Man S is offline Admin & Founder

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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    As a note I heard from Greg at RSS and the rotors I received had missed going through the chamfering process on that inner lip somehow. They pulled all the rotors in inventory and checked them and any missing the chamfering have been chamfered now so future buyers should not face the problem I faced during the install. Good to hear!

  8. #8
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    So.... any chance of a group buy?

  9. #9
    K-Man S's Avatar
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    Quote Originally Posted by BillC View Post
    So.... any chance of a group buy?
    You'd have to ask Greg at RSS and see.

  10. #10
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    fmarshall is offline Moderator & 11 Year PCA Member
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    Nicely written article with great pictures!!

    Slotted rotors are great for lots of track use. though they wear the pads more quickly on the street than comparable cross-drilled rotors.

    FWIW, the tool that you used to measure the rotor thickness in the article is a vernier caliper. A micrometer is a more precise measuring tool.

    http://www.design-technology.org/micrometer.jpg
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    I think this upgrade will prove to be very worthwhile and am looking forward to hearing about your experience on the track. I will certainly consider it when my rotors need replacing.

    I noticed on the pics of the rear installation a covering over your exhaust and was wondering what that material is. The stock pipe has a shrouding of metal as a heat shield which my Fabspeedicon does not. Is this something I should address?

    Thanks--

  12. #12
    K-Man S's Avatar
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    Quote Originally Posted by SilverFox88 View Post
    I think this upgrade will prove to be very worthwhile and am looking forward to hearing about your experience on the track. I will certainly consider it when my rotors need replacing.

    I noticed on the pics of the rear installation a covering over your exhaust and was wondering what that material is. The stock pipe has a shrouding of metal as a heat shield which my Fabspeedicon does not. Is this something I should address?

    Thanks--

    That is the heat shielding wrap that comes with the Capristoicon system. It will help keep the suspension pieces cooler, some people have reported cooking shock/strut fluid when running aftermarket exhausts with no shielding.

  13. #13
    Craig@Rennstore.com is offline Bronze Sponsor
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    Heads up:

    As of February 16th 2008 and with the coordination of Greg at RSS, I now carry the GiroDisc lineup at www.RennStore.com -- The source for Pagid brake pads.

    Ordering and graphics coming in a week or so, in the meantime e-mail me at:
    Rennstore@comcast.net
    Craig
    425-765-1090, www.Rennstore.com --assistance & discussion for your pad selection welcomed

    PAGID brake pads - Daytona 24 hr winners in every podium position

    GiroDisc brake systems and pad spreaders NOW AVAILABLE - SPECIAL PRICING!



    E-mail for any questions: Rennstore@Comcast.net

  14. #14
    Craig@Rennstore.com is offline Bronze Sponsor
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install













    Send me an e-mail: rennstore@comcast.net for the PP price...

    You will be pleasantly surprised
    Craig
    425-765-1090, www.Rennstore.com --assistance & discussion for your pad selection welcomed

    PAGID brake pads - Daytona 24 hr winners in every podium position

    GiroDisc brake systems and pad spreaders NOW AVAILABLE - SPECIAL PRICING!



    E-mail for any questions: Rennstore@Comcast.net

  15. #15
    Craig@Rennstore.com is offline Bronze Sponsor
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    Ken -

    Can you snap a few pics of your GIros now that time has elapsed, as well as approximate mileage and qty of track days you have on them - appreciated
    Craig
    425-765-1090, www.Rennstore.com --assistance & discussion for your pad selection welcomed

    PAGID brake pads - Daytona 24 hr winners in every podium position

    GiroDisc brake systems and pad spreaders NOW AVAILABLE - SPECIAL PRICING!



    E-mail for any questions: Rennstore@Comcast.net

  16. #16
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    Craig, nice looking rotors! I purchased pads from you awhile back for my 996TT and they were great... when it's time for me to upgrade the Cayman, I'll definitely give you a call. You can always PM me a price now and get me thinkin...

  17. #17
    K-Man S's Avatar
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    I will see what I can do when it gets warmer, I have a feeling one may be warped or else shifted or loose or something as I have a vibration under braking

  18. #18
    Craig@Rennstore.com is offline Bronze Sponsor
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    Nearly certain you have pad transfer, warping on a modern Porsche is virtually nonexistent, maybe this helps.

    Hi Jason! Funny enough....a 996TT needs the rotor upgrade even more so than a Cayman S - those rotors are seriously undersized for the track potential of a 996TT.
    So many people have problems with 996TT rotors that see track use.....

    PM coming!
    Craig
    425-765-1090, www.Rennstore.com --assistance & discussion for your pad selection welcomed

    PAGID brake pads - Daytona 24 hr winners in every podium position

    GiroDisc brake systems and pad spreaders NOW AVAILABLE - SPECIAL PRICING!



    E-mail for any questions: Rennstore@Comcast.net

  19. #19
    K-Man S's Avatar
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    No pad transfer but definite vibration

  20. #20
    Craig@Rennstore.com is offline Bronze Sponsor
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    Re: Give me a Brake! - Girodisc Slotted Rotor Install

    Dial indicator with disc on car. What pads you using now? Transfer often times is impossible to see -
    Craig
    425-765-1090, www.Rennstore.com --assistance & discussion for your pad selection welcomed

    PAGID brake pads - Daytona 24 hr winners in every podium position

    GiroDisc brake systems and pad spreaders NOW AVAILABLE - SPECIAL PRICING!



    E-mail for any questions: Rennstore@Comcast.net

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