New Right Stuff Rear Brake Kit AFXRD07

Discussion in 'Project Progress' started by czizza, Dec 25, 2014.

  1. Tokyo Torquer3

    Tokyo Torquer3 Veteran Member

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    did the kit change your wheel offset any?

    Looks like you had to do a little minor machining to make it all fit right.

    Do you think the braking performance is better. I heard it said, that drum brakes are more efficient stoppers for a given diameter for single stops/ normal street driving, but quickly lose to discs when multiple rapid stops are involved (road racing) because their drawback is they retain heat while discs cool much more quickly.
     
    Last edited: Dec 28, 2015
  2. czizza

    czizza Veteran Member

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    No change to the wheel offset.
    Brakes are better all around and more predictable.
     
  3. bonedoc

    bonedoc Member Lifetime Gold Member

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  4. bonedoc

    bonedoc Member Lifetime Gold Member

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    What proportioning valve did you use, since there all 4 discs now?



     
  5. czizza

    czizza Veteran Member

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  6. Seventy1ProTour

    Seventy1ProTour Member

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    Would you recommend the same prop valve for say, 4 piston front and rear swap. Already got a diff master. Manual brakes.
     
  7. czizza

    czizza Veteran Member

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    From what I know about proportion valves (this is from when I rebuilt them and played with them back in the 80s) is that they are strictly a path way based on percentage. Meaning this valve is probably a 70/30 value ... which means 70% to the front and 30% to the rear ... no matter how much you push through it. Back in the day for the Mustangs we use to ream them out and make the a distribution block because their Master Cylinders we so crappy.

    That being said ... You have a four piston setup; I have a two piston setup Wilwood D52 front and then the Right Stuff (AKA GM Eldorado rears) and it works with the current valving. For you I would recommend calling them ... or getting this with an adjustable valve on the rear brakes so you can adjust the valving at a minimum.

    ... BUT ... Remember; even if you have the adjuster you bias might be off still because your 4 piston setup might want more fluid.

    Good luck, and if you go the 2nd route please get a pressure tester for the calipers and test your furthest calipers front/rear.
     
  8. allstar12316

    allstar12316 Veteran Member

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    Where did you get the short shaft adapter? I have original booster, but I ran the right stuff master and prop valve. When I pump the brakes I don’t think I have fluid leaving master. I’m assuming it’s the short shaft?
     
  9. czizza

    czizza Veteran Member

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    I got it from a local guy that sells parts ... the Master Cylinder is the same from a TA with all wheel DISC brakes.
     

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