Rotor Resurfacing? Read This First.
02-15-2011, 04:52 PM
#1
AZ Community Team
Thread Starter
Join Date: May 2007
Location: N35°03'16.75", W 080°51'0.9"
Posts: 32,488
Received 7,770 Likes
on
4,341 Posts
Rotor Resurfacing? Read This First.
Don't Refinish Brake Discs Unnecessarily
Back in July of this year, we revised S/B 00-037,
Brake Disc Refinishing Guidelines. That revision had
two purposes:
• It removed the requirement to refinish new brake
discs. (Improvements in manufacturing processes
have made that unnecessary.)
• It stated that you should only refinish brake discs
when they are scored or out of specification for
runout or parallelism (backed up by
measurements).
But since then, there’s still been a lot of brake disc
refinishing being done, particularly during client-pay
brake jobs. This is a waste of perfectly good brake
disc material and, more importantly, your client’s
money. So please review your repair policies when
replacing brake pads. Our investigations have shown
that the need for disc refinishing should be rare.
Discs should be refinished only if they’re scored or
out of spec. For detailed inspection instructions, refer
to the appropriate S/M.
Back in July of this year, we revised S/B 00-037,
Brake Disc Refinishing Guidelines. That revision had
two purposes:
• It removed the requirement to refinish new brake
discs. (Improvements in manufacturing processes
have made that unnecessary.)
• It stated that you should only refinish brake discs
when they are scored or out of specification for
runout or parallelism (backed up by
measurements).
But since then, there’s still been a lot of brake disc
refinishing being done, particularly during client-pay
brake jobs. This is a waste of perfectly good brake
disc material and, more importantly, your client’s
money. So please review your repair policies when
replacing brake pads. Our investigations have shown
that the need for disc refinishing should be rare.
Discs should be refinished only if they’re scored or
out of spec. For detailed inspection instructions, refer
to the appropriate S/M.
https://acurazine.com/forums/3g-tl-2004-2008-93/acura-servicenews-bulletins-588838/ - December 2010
Referenced TSB: http://techinfo.honda.com/Rjanisis/pubs/SN/B101200.PDF
If the direct link doesn't work, follow the instructions on this page: https://acurazine.com/forums/3g-tl-2004-2008-93/3g-tl-technical-service-bulletins-tsbs-3g-garage-j-016-a-613659/
02-15-2011, 06:15 PM
#2
Race Director
x2
https://acurazine.com/forums/showpos...4&postcount=30
https://acurazine.com/forums/showpos...4&postcount=30
Basically, if your rotors are not causing pulsing (not warped and meet run out specs) during braking, are smooth and ungrooved and meet thickness specs (23mm), there's no reason to resurface or replace them. FYI, my original rotors are still within spec at 108K miles (OEM pads lasted 63K, RB ET300 pads since then).
A proper bed-in procedure should eliminate any old pad material and deposit an appropriate amount of new pad material to produce noise free braking. A lot of brake shops will tell you to resurface the rotors but that's totally unnecessary and takes life out of the rotors. In fact, Acura issued a Service News article (Dec, 2010, quoted below) specifically telling dealers not to resurface rotors unless they don't meet run out/parallelism specs.
Since you don't plan on installing the pads yourself, you'll need to confirm that the shop will do a complete bed-in of the pads or just tell them to install the pads and do the bed-in procedure yourself.
"Don't Refinish Brake Discs
Unnecessarily
Back in July of this year, we revised S/B 00-037,
Brake Disc Refinishing Guidelines. That revision had
two purposes:
• It removed the requirement to refinish new brake
discs. (Improvements in manufacturing processes
have made that unnecessary.)
• It stated that you should only refinish brake discs
when they are scored or out of specification for
runout or parallelism (backed up by
measurements).
But since then, there’s still been a lot of brake disc
refinishing being done, particularly during client-pay
brake jobs. This is a waste of perfectly good brake
disc material and, more importantly, your client’s
money. So please review your repair policies when
replacing brake pads. Our investigations have shown
that the need for disc refinishing should be rare.
Discs should be refinished only if they’re scored or
out of spec. For detailed inspection instructions, refer
to the appropriate S/M."
A proper bed-in procedure should eliminate any old pad material and deposit an appropriate amount of new pad material to produce noise free braking. A lot of brake shops will tell you to resurface the rotors but that's totally unnecessary and takes life out of the rotors. In fact, Acura issued a Service News article (Dec, 2010, quoted below) specifically telling dealers not to resurface rotors unless they don't meet run out/parallelism specs.
Since you don't plan on installing the pads yourself, you'll need to confirm that the shop will do a complete bed-in of the pads or just tell them to install the pads and do the bed-in procedure yourself.
"Don't Refinish Brake Discs
Unnecessarily
Back in July of this year, we revised S/B 00-037,
Brake Disc Refinishing Guidelines. That revision had
two purposes:
• It removed the requirement to refinish new brake
discs. (Improvements in manufacturing processes
have made that unnecessary.)
• It stated that you should only refinish brake discs
when they are scored or out of specification for
runout or parallelism (backed up by
measurements).
But since then, there’s still been a lot of brake disc
refinishing being done, particularly during client-pay
brake jobs. This is a waste of perfectly good brake
disc material and, more importantly, your client’s
money. So please review your repair policies when
replacing brake pads. Our investigations have shown
that the need for disc refinishing should be rare.
Discs should be refinished only if they’re scored or
out of spec. For detailed inspection instructions, refer
to the appropriate S/M."
Last edited by nfnsquared; 02-15-2011 at 06:17 PM.
02-15-2011, 06:44 PM
#3
AZ Community Team
Thread Starter
Join Date: May 2007
Location: N35°03'16.75", W 080°51'0.9"
Posts: 32,488
Received 7,770 Likes
on
4,341 Posts
Ahh. Missed that. Haven't been in the TL section as much the past few months.
02-16-2011, 08:50 AM
#4
Head a da Family
Join Date: Jul 2003
Location: New Friggin Jerzy
Age: 69
Posts: 5,505
Received 561 Likes
on
393 Posts
The PROPER way to resurface the rotors on these cars is by using the lathe that resurfaces them ON THE CAR. All Honda and Acura dealers do it this way because the new surface is then perfectly perpendicular to the wheel hub and spindle.
.
.
02-16-2011, 09:13 AM
#5
Your Friendly Canadian
Join Date: Dec 2007
Location: Toronto, Ontario
Age: 31
Posts: 17,431
Received 1,485 Likes
on
1,049 Posts
What other reasons would you have for resurfacing rotors other than them being "out of spec" (warped)?
02-16-2011, 10:05 AM
#6
Race Director
None. Unfortunately, many shops turn rotors simple to prevent customers from coming back with noise complaints. Turning ensures all old pad material is removed, however a simple sanding and/or proper bed-in procedures will perform this task without taking valuable rotor material/thickness.
02-16-2011, 10:32 AM
#7
AZ Community Team
Thread Starter
Join Date: May 2007
Location: N35°03'16.75", W 080°51'0.9"
Posts: 32,488
Received 7,770 Likes
on
4,341 Posts
Even if there is no indication that the rotors need resurfacing. How can the shop quote resurfacing if they don't even have the car yet? They're just taking your money.
A lot of us believe that the TL rotors are prone to warping - shaking under braking. Taking mass away from the rotor unnecessarily will just make the problem show up sooner.
Trending Topics
02-16-2011, 07:25 PM
#8
Team Owner
It's nice Honda has finally joined the rest of the world. They're even recognizing their Z1 is junk 10 years too late.
02-16-2011, 07:27 PM
#9
Team Owner
I can't tell you the number of posts I've read that basically say, "Getting new pads, should I resurface my rotors?" Or, "Shop wants $xxx for brake job - pads & resurface rotors. Is that a good deal?"
Even if there is no indication that the rotors need resurfacing. How can the shop quote resurfacing if they don't even have the car yet? They're just taking your money.
A lot of us believe that the TL rotors are prone to warping - shaking under braking. Taking mass away from the rotor unnecessarily will just make the problem show up sooner.
Even if there is no indication that the rotors need resurfacing. How can the shop quote resurfacing if they don't even have the car yet? They're just taking your money.
A lot of us believe that the TL rotors are prone to warping - shaking under braking. Taking mass away from the rotor unnecessarily will just make the problem show up sooner.
Thread
Thread Starter
Forum
Replies
Last Post
rp_guy
Member Cars for Sale
9
07-16-2017 07:33 AM
2007, 2008, acura, bakersfield, ca, diy, resurface, resurfaced, resurfacing, rotor, rotors, scored, tl, tsx, turning
