Brake Caliper Rebuilds - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to   Members

General Miata Chat A place to talk about anything Miata

LinkBack Thread Tools
Old 04-02-2013, 09:49 PM   #1
Thread Starter
Join Date: Apr 2013
Posts: 1
Total Cats: 0
Default Brake Caliper Rebuilds

My driver side rear brake is dragging again for the second time within a month, so time for a rebuild! What parts are recommended for a brake caliper rebuild? From what I can gather by browsing Rosenthal, I will need both NAY1-26-46ZB and NAY1-33-26Z. Should I get new slides as well? If so are 4x BW0H-26-998A, 2x 8239-49-114, and 2x 8173-49-114 what I will need? Please correct me if I am mistaken. Are the pistons usually salvageable? I'm not sure how mine look under the boot, but living in the south I don't think they should be too awful due to our road conditions. I'm considering upgrading the brake lines while the calipers are off (master-C rebuild maybe as well?) and purchasing some stainless lines, anyone have experience with the FM set? The 949 are sold out, but they look really similar. Thanks in advance.
Han Solo is offline   Reply With Quote
Old 04-06-2013, 10:32 AM   #2
Join Date: Sep 2008
Posts: 2
Total Cats: 0

Ive never had to replace the piston on any I have done. Make sure the slides and boots are all clean and lubed properly
R1CYM is offline   Reply With Quote
Old 04-06-2013, 11:09 AM   #3
Join Date: Mar 2013
Location: South West Michigan
Posts: 12
Total Cats: 0

Originally Posted by R1CYM View Post
Ive never had to replace the piston on any I have done. Make sure the slides and boots are all clean and lubed properly
+1 and ++1 on the clean and lubed bit.
If there is discoloring or surface corrosion on the piston or cylinder steel wool usually cleans it up. I haven't had one pitted so it was unusable. Maybe I might have if I took apart every caliper I have replaced but the totally crap calipers I don't even try to rebuild.

Sorry Han Solo, you lost me with the part numbers! Can't help you there.
greg 713 is offline   Reply With Quote
Old 04-06-2013, 01:39 PM   #4
Elite Member
iTrader: (21)
Join Date: Jun 2007
Location: Rochester, NY
Posts: 5,684
Total Cats: 555

You really have to have a bad piston to need to replace it. Even pitted ones can be cleaned up and reused.

AVOID buying Beck Arnley. They didn't include the seals around the parking brake levers, even though all the pics online clearly show those parts included. And, that is one of the major failure points - the very reason I bought the kits in the first place.

When contacted, they blew me off without an apology, refund or offer of replacement. That's what kind of quality you get when they move their operations to China.
rleete is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
15x10 - 15x11 6UL @ 949 Racing emilio700 Wheels and Tires 151 06-02-2017 03:36 PM
Leaky Wilwoods mx592 Suspension, Brakes, Drivetrain 1 10-01-2015 01:45 AM
Another Alternator thread ihiryu General Miata Chat 9 09-28-2015 11:22 AM

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 03:58 PM.