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Today at Atelier Kaz - Private NSX Enthusiast, ex-Honda R&D engineer with F1, Indy/CART background

Health Check, Brake OH, Koyo Rad, etc 14

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The rust was not too bad but too deep so no way I can re-use these pistons…




New ones to be installed.






As same as the front side, just double check the smooth operation of the brake piston.




Again, didn’t like re-using the banjo bolt so replaced with new one.


All four callipers back on the car, brake lines connected and bench bleeding the new master cyl.

Aiming to return this NSX to the owner on next Sunday….


Kaz



Comments

  1. solidol's Avatar
    Hi Kaz, thanks to for sharing. I'm planning to rebuild my rear brakes soon. What are you using for "one man" brakes bleeding?
  2. Kaz-kzukNA1's Avatar
    Hi, solidol.

    The answer is in the next blog post - pressure bleeding. Just posted it.

    http://www.nsxcb.co.uk/entry.php?165...oyo-Rad-etc-15


    Kaz
  3. solidol's Avatar
    Quote Originally Posted by Kaz-kzukNA1
    Hi, solidol.

    The answer is in the next blog post - pressure bleeding. Just posted it.

    http://www.nsxcb.co.uk/entry.php?165...oyo-Rad-etc-15

    Kaz
    Hi Kaz,

    I was curious about the pressure bleeder you use. Also I just looked at parts catalog and looks like 01473-SL0-010 (Caliper Set, RR; #1 on Appendix A) has been discontinued. What do you use to rebuild rear calipers? Rebuild kits for front brakes are available though.

    Thank you,
    Roman

    Appendix A:

    Updated 08-11-2015 at 10:18 PM by solidol
  4. solidol's Avatar
    Quote Originally Posted by solidol
    Hi Kaz,

    I was curious about the pressure bleeder you use. Also I just looked at parts catalog and looks like 01473-SL0-010 (Caliper Set, RR; #1 on Appendix A) has been discontinued. What do you use to rebuild rear calipers? Rebuild kits for front brakes are available though.

    Thank you,
    Roman

    Appendix A:

    Apparently with 97+ brakes upgrade piston size haven't changed. Even though Honda changed the part number to 01473-SL0-J00. This one is still available to order in US.
  5. Kaz-kzukNA1's Avatar
    Not sure from where you got the info but the piston diameter at the rear changed massively from 97+ in order to shift the brake balance towards the rear. Therefore, the piston seal and the dust boot are not the same between -010 and -J00 kit.

    Long time ago, Acura discontinued the Rear calliper service kit -010 (#1 in your diagram) for the smaller calliper spec (91 – 96) in US.
    In Japan, we can still get it without any issues. I just order all of my parts directly from Japan.

    If you own the NSX with the smaller calliper spec and if you can’t get -010 early spec (91 – 96) Rear calliper service kit but can get hold of –J00 later spec (97+) one, then you may find it easier to just buy –J00 x 2 + [#7 x 2 + #9 x 2 (for the 91 – 96 models)] to replace the piston seal and dust boot that are included in the –J00 kit.
    Rest of the parts such as pin boot, o-ring, seal, gasket, grease, etc are the same.

    Otherwise, you need to buy #43 x 4, #7 x 2, #9 x 2, #11 x 2, #20 x 2, #25 x 2, brake line seal washer x 4 separately and on top of these, you must get hold of good quality grease set that you may not have.


    Quite surprised that you can get –J00 but not the -010 because I thought it was something to do with the chemical used in the included grease but both comes with exactly the same type and number of greases so not sure why…..


    You can use any kind of pressure or vacuum bleeder.
    The key is the attachment for the brake master cyl reservoir.
    It’s a Japanese car so I just use the tool from Japan.
    Reservoir attachment: KTC – Kyoto Tool Co., Ltd. ABX70-H1
    The attachment holder (chain clamp): ABX70-E1
    You need the correct mating fitting at the end of pressure/vacuum hose where it meets the attachment.

    I have no doubt the socket from Snap-on is the thinnest and the strongest product and thus, love them.
    There are nice tools from many other countries including but not limited to Germany, France, Japan, etc.

    Kaz

    Updated 09-11-2015 at 12:36 PM by Kaz-kzukNA1 (extra info, clarification of the parts)
  6. solidol's Avatar
    Quote Originally Posted by Kaz-kzukNA1
    Not sure from where you got the info but the piston diameter at the rear changed massively from 97+ in order to shift the brake balance towards the rear. Therefore, the piston seal and the dust boot are not the same between -010 and -J00 kit.

    Long time ago, Acura discontinued the Rear calliper service kit -010 (#1 in your diagram) for the smaller calliper spec (91 – 96) in US.
    In Japan, we can still get it without any issues. I just order all of my parts directly from Japan.

    If you own the NSX with the smaller calliper spec and if you can’t get -010 early spec (91 – 96) Rear calliper service kit but can get hold of –J00 later spec (97+) one, then you may find it easier to just buy –J00 x 2 + [#7 x 2 + #9 x 2 (for the 91 – 96 models)] to replace the piston seal and dust boot that are included in the –J00 kit.
    Rest of the parts such as pin boot, o-ring, seal, gasket, grease, etc are the same.

    Otherwise, you need to buy #43 x 4, #7 x 2, #9 x 2, #11 x 2, #20 x 2, #25 x 2, brake line seal washer x 4 separately and on top of these, you must get hold of good quality grease set that you may not have.


    Quite surprised that you can get –J00 but not the -010 because I thought it was something to do with the chemical used in the included grease but both comes with exactly the same type and number of greases so not sure why…..


    You can use any kind of pressure or vacuum bleeder.
    The key is the attachment for the brake master cyl reservoir.
    It’s a Japanese car so I just use the tool from Japan.
    Reservoir attachment: KTC – Kyoto Tool Co., Ltd. ABX70-H1
    The attachment holder (chain clamp): ABX70-E1
    You need the correct mating fitting at the end of pressure/vacuum hose where it meets the attachment.

    I have no doubt the socket from Snap-on is the thinnest and the strongest product and thus, love them.
    There are nice tools from many other countries including but not limited to Germany, France, Japan, etc.

    Kaz

    Hi Kaz, thanks for detailed explanation. I was led to believe for 97+ there was only brake disc size change. Which now when I think about it makes little to no sense without increasing clamping force -> piston size increase. For 91-96 rear piston size looks to be 42mm and increased to 48mm for 97+ models. I will probably order later model repair kit and just replace piston seal and dust boot from earlier years. Just like you have suggested.

    I'll give Motive a try as it seems like a good choice - http://amzn.com/B00CJ5DWKO



    Hope it seals well.

    Thank you,
    Roman