11.75" brake assembly - torque setting? - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Race Prep Miata race-only chat.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 01-31-2014, 03:10 PM   #1
Senior Member
Thread Starter
 
Join Date: Dec 2010
Location: Auckland, NZ
Posts: 783
Total Cats: 23
Default 11.75" brake assembly - torque setting?

My 949 11.75" kit is going on today.

Can anyone recommend a torque for the tophat to rotor bolts/nuts?

Being brakes i'd like to put it together properly in the hope of them staying together!
mx5-kiwi is offline   Reply With Quote
Old 01-31-2014, 06:04 PM   #2
Senior Member
iTrader: (8)
 
Join Date: Oct 2010
Posts: 581
Total Cats: 4
Default

Dont forget lock wire. I just torque them by hand and lock them.
joyrider is offline   Reply With Quote
Old 01-31-2014, 09:38 PM   #3
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,370
Total Cats: 1,332
Default

Quote:
Originally Posted by joyrider View Post
Dont forget lock wire.
+1. Our 11.75 kits are pre-assembled before they ship out, but if you're doing yours on your own, you must safety wire them.
Savington is offline   Reply With Quote
Old 02-10-2014, 04:05 AM   #4
Senior Member
Thread Starter
 
Join Date: Dec 2010
Location: Auckland, NZ
Posts: 783
Total Cats: 23
Default

For future reference, Willwood have instructions here under Miata Fitting instructions....

Wilwood High-Performance Disc Brakes - How To Instructions

For some reason the NA is listed under "2010 Miata Fitting Instructions".
mx5-kiwi is offline   Reply With Quote
Old 02-10-2014, 04:42 AM   #5
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,370
Total Cats: 1,332
Default

Quote:
Originally Posted by mx5-kiwi View Post
For future reference, Willwood have instructions here under Miata Fitting instructions....

Wilwood High-Performance Disc Brakes - How To Instructions

For some reason the NA is listed under "2010 Miata Fitting Instructions".
I don't see any reference to safety wire in those instructions. Is your hardware drilled for safety wire?
Savington is offline   Reply With Quote
Old 02-10-2014, 05:46 AM   #6
Senior Member
Thread Starter
 
Join Date: Dec 2010
Location: Auckland, NZ
Posts: 783
Total Cats: 23
Default

Nope. No safety wire holes in bolts,Wilwood instructions don't mention it, none of the kits I have seen mention it...949 racing site doesn't mention it...

I agree it would be better to have them safety wired but drilling the holes and then safety wiring seems like a lot of work for something that very few people seem to do OR have problems with.....(that I have seen at least.. ?)

Maybe in the off season i'll look at it.

In the meantime I have torqued and locktite'd as per instructions....
mx5-kiwi is offline   Reply With Quote
Old 02-10-2014, 10:32 AM   #7
Elite Member
 
Join Date: Oct 2011
Location: OKC, OK
Posts: 2,659
Total Cats: 76
Default

Quote:
Originally Posted by Savington View Post
I don't see any reference to safety wire in those instructions. Is your hardware drilled for safety wire?
There isn't, I actually called them about this last year when installed my 11" kit.

They said they aren't having any problems with their current assembly instructions. We put 10 sessions on the car in 1 day with no problems.

(I did order the ARP bolts, but they don't work with the rotor/hat setup.)
z31maniac is offline   Reply With Quote
Old 02-10-2014, 12:33 PM   #8
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,370
Total Cats: 1,332
Default

Quote:
Originally Posted by mx5-kiwi View Post
Nope. No safety wire holes in bolts,Wilwood instructions don't mention it, none of the kits I have seen mention it...949 racing site doesn't mention it...

I agree it would be better to have them safety wired but drilling the holes and then safety wiring seems like a lot of work for something that very few people seem to do OR have problems with.....(that I have seen at least.. ?)
post 67

Quote:
Originally Posted by DeerHunter View Post
Getting the hub bolt off was a minor pain, but everything went relatively smoothly, until I examined my rotor (Goodwin BBK, v.2, IIRC). All the bolts holding the friction ring were loose and one had come completely out (first pic). It had caught in the edge of the hat and made a lovely gouge in the bracket (second picture).


Up to you to decide whether safety wire is important or not.
Savington is offline   Reply With Quote
Old 02-10-2014, 02:30 PM   #9
Ian
Junior Member
iTrader: (2)
 
Join Date: Jan 2012
Posts: 163
Total Cats: 4
Default

Please safety wire your brakes. I would hate to see a thread where your car gets wadded or worse because you didn't take the time to do it right the first time.
Ian is offline   Reply With Quote
Old 02-10-2014, 02:40 PM   #10
Supporting Vendor
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 5,324
Total Cats: 1,344
Default

Safety wire is ideal but we actually never safety wire our two piece brake systems here. We have also never had a rotor/hat fastener back out. I suggest K nuts as an option to safety wire.

Sounds like the 11.75 kit we shipped mx5-kiwi didn't have the torque sheet. Sorry! Here's the spec: Using a star pattern, torque fasteners in the following steps 18lbs-ft, 24 lbs-ft, 28 lbs-ft. Use blue or red Loctite on threads
emilio700 is offline   Reply With Quote
Old 02-10-2014, 03:29 PM   #11
Junior Member
 
Join Date: Aug 2010
Location: Texas
Posts: 162
Total Cats: 11
Default

I didn't safety wire my 949 kit as that was not the instructions provided. I did a bit of research around safety wiring, and from what I gathered, too many people do it incorrectly (thus making it unsafe) that it was better to just use loctite. So far, my brakes haven't come apart on me. <shrug>

robert
robertcope is offline   Reply With Quote
Old 02-10-2014, 06:10 PM   #12
Ian
Junior Member
iTrader: (2)
 
Join Date: Jan 2012
Posts: 163
Total Cats: 4
Default

Big bonus points to TrackSpeed for safety wiring before shipping these kits out! The extra effort really makes a difference to customers like me.
Ian is offline   Reply With Quote
Old 02-10-2014, 06:11 PM   #13
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,370
Total Cats: 1,332
Default

I also use Resbond instead of Loctite on the rotor/hat bolts. Normal Loctite deactivates with heat.
Savington is offline   Reply With Quote
Old 02-10-2014, 07:04 PM   #14
Elite Member
 
Join Date: Jul 2005
Location: Anacortes, WA
Posts: 2,479
Total Cats: 116
Default

Quote:
Originally Posted by Savington View Post
+1. Our 11.75 kits are pre-assembled before they ship out, but if you're doing yours on your own, you must safety wire them.
Holy cow what is your labor time for safty wiring a set of rotors? seems like it takes me at least an hour. I usually do it watching TV. I would think you would need to charge more for including that service than you do.
bbundy is offline   Reply With Quote
Old 02-10-2014, 07:22 PM   #15
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,370
Total Cats: 1,332
Default

Quote:
Originally Posted by bbundy View Post
Holy cow what is your labor time for safty wiring a set of rotors? seems like it takes me at least an hour. I usually do it watching TV. I would think you would need to charge more for including that service than you do.
It takes me ~15 minutes to do 8 pairs (2 rotors' worth). I've done a few of them, though, so a lot of the little decisions that make it take so long (where to route the wire, how to wrap it, how tight to twist the wire) just happen on auto-pilot for me. I've been meaning to videotape myself doing it sometime, actually - just haven't gotten around to it.
Savington is offline   Reply With Quote
Old 02-15-2014, 02:48 AM   #16
Senior Member
Thread Starter
 
Join Date: Dec 2010
Location: Auckland, NZ
Posts: 783
Total Cats: 23
Default

Just wanted to say, THank you to Emilio for the WICKED brakes. Anyone considering 11.75" upgrade...dont consider, just bite the bullet!!!

Firmer pedal, great heat resistance, awesome feel......I'm really impressed.

I think I took off 20-40 mtrs off some of my braking markers today with them (WITH passenger!!)...2 weeks will confirm at next race meet but I am sure I am now braking significantly, consistantly deeper.

Even better the feel is confidence inspiring, where as with the old "Big Brake" setup I felt like it was closer to the braking capacity than was comfortable...possibly all psychological but hey, thats a big part of the game when racing right?
mx5-kiwi is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 12-15-2017 09:00 PM
1994 Spec Miata Race Car SM/SM2/SSM For Sale Quinn Cars for sale/trade 6 10-23-2016 08:58 AM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Changing from 460cc to flow force 610cc in diypnp 90 Turbo MEGAsquirt 19 10-19-2015 04:23 PM
Leaky Wilwoods mx592 Suspension, Brakes, Drivetrain 1 10-01-2015 01:45 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 09:44 AM.