Rusty OEM rotors...my little project to attack this subject>>> - CorvetteForum - Chevrolet Corvette Forum Discussion

Go Back   >
Log In 
Register FAQ Search Today's Posts Mark Forums Read Vendor Directory

C6 Tech/Performance
LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace Sponsored by
21st Century Muscle Cars

Rusty OEM rotors...my little project to attack this subject>>>

Reply
 
 
 
Thread Tools Search this Thread
Old 07-04-2005, 07:35 AM   #1
C6FirstVette
CF Senior Member
Thread Starter
 
C6FirstVette's Avatar
 
Member Since: Jul 2004
Location: Jupiter Florida
Posts: 2,907
Thanks: 0
Thanked 0 Times in 0 Posts
Default Rusty OEM rotors...my little project to attack this subject>>>

Call it what you want but from day one I have been bothered by the rusty appearance of the Z51 rotors...yes they are cast iron but these rotors just rust more than many others... my Lotus Elise rotors barely rust and in fact look new after 2000+ miles. So I looked at options and decided to see if the cheap route might work (local powder coating place wanted $125 per rotor! so that fell off the option list). Here is what I did>>>

First the materials list
1 gal Oxysolve from Eastwood.com
blue loc tite
paint brush and '0' steel wool
13/16" socket drive
Acetone
bucket



You need to remove each brake caliper assembly therefore remove the two 13/16" (or 21mm) bolts holding on the caliper bracket


When reinstalling the bracket will need the blue loc tite for the bolts.

Now this is what you will start with...pre treatment rotors front and rear>>>



After removing the caliper brackets remove each rotor and soak/brush in the Oxisolve (place about 1/2 gal in the bucket). Also using the brush (with a catch container under each hub assembly) brush on Oxisolve several times...work heavier rust with steel wool





Takes about 15 minutes soaking for each rotor and then place on newspaper and dry off. Next using the Acetone with steel wool and paper towls (not too much...don't want the to have dripping clean off coating in holes and vanes) clean off brake pad contact surfaces (area will remain a dull greyish appearance and the little remaining on the contact surface with quickly burnish off on first brake application. On rear rotors make sure you do the emergency brake shoe contact areas inside the rotor.

Any way here is the post treatment appearance and every bit of the rust (inside vanes of rotors, holes etc) is gone. All the surfaces now are coated with zinc phosphate... quoting from the product label (and fully backed by Eastwood folks) OxiSolv is designed as a one step process to remove rust. At the same time it leaves a zinc phosphate coating which not only inhibits further rusting but also provides excellent primer adhesion.




After first drive here the pad contact areas starting to burnish up a bit>>>


Long term...don't know since I just did this on Saturday, but I do know that the process removed a lot of rust from the rotors and IMO looks a hell of a lot better Total time: 1 hr per rotor (couple beers thrown in to boot)

Michael

Last edited by C6FirstVette; 07-04-2005 at 07:38 AM.
C6FirstVette is offline   Reply With Quote
Old 07-04-2005, 08:35 AM   #2
vettnutt
CF Senior Member
 
vettnutt's Avatar
 
Member Since: Dec 2004
Location: Western MI
Posts: 1,379
Thanked 26 Times in 17 Posts
Default

Looks very good. I'd like to try that myself. What are the caliper bracket bolts torqued to?
vettnutt is offline   Reply With Quote
Old 07-04-2005, 09:10 AM   #3
TRR
CF Senior Member
Support Corvetteforum!
 
TRR's Avatar
 
Member Since: Dec 1999
Location: Somewhere Texas
Posts: 6,329
Thanks: 0
Thanked 1 Time in 1 Post
Default

Very nice post. You just might have saved me a whole lot of $.


TRR
TRR is offline   Reply With Quote
Old 07-04-2005, 09:30 AM   #4
SickRick
CF Senior Member
 
SickRick's Avatar
 
Member Since: May 2005
Location: Ft. Liquordale Florida
Posts: 1,254
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Wouldn't the contact surfaces just re-rust after the pads have rubbed off the coating?

I do understand that this would prevent to REST of the rotor from rusting...

Nice job...

Rick
SickRick is offline   Reply With Quote
Old 07-04-2005, 10:48 AM   #5
JmpnJckFlsh
CF Senior Member
 
Member Since: Jul 2001
Location: Spicewood, Texas, USA TX-Texas
Posts: 4,456
Thanks: 0
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by SickRick
Wouldn't the contact surfaces just re-rust after the pads have rubbed off the coating?

I do understand that this would prevent to REST of the rotor from rusting...
Yes. I doubt the zinc phosphate crystals survive the first couple of brake applications. In the same way, rust will not be able to remain on the contact areas either. Powder coaters would also mask off the contact surfaces to preserve brake function. In any case, C6FirstVette's treatment DOES make a significant improvment in the hub appearance and rest of the rotor. Good info.
JmpnJckFlsh is offline   Reply With Quote
Old 07-04-2005, 12:31 PM   #6
wlee013
CF Senior Member
 
wlee013's Avatar
 
Member Since: Nov 2003
Location: Honolulu HI
Posts: 545
Thanks: 0
Thanked 1 Time in 1 Post
Default

Nice Job!
wlee013 is offline   Reply With Quote
Old 07-04-2005, 08:47 PM   #7
dcolehome
CF Senior Member
Support Corvetteforum!
 
dcolehome's Avatar
 
Member Since: Jun 2005
Location: Corona CA
Posts: 363
Thanked 1 Time in 1 Post
Default

Excellent post. I appreciate the top looking down photo on the rotor to see how the calipers are attached. I'm painting the calipers in a couple of weeks and this was very helpful. You saved me some time and surprise. Let us know how the treatment holds up. Thanks!
dcolehome is offline   Reply With Quote
Old 07-04-2005, 10:36 PM   #8
Pipedreams
CF Senior Member
St. Jude Donor '06-'07
 
Member Since: Jan 2005
Location: Bay Shore, NY 11706 MILD2WILD (M2W)
Posts: 13,779
Thanks: 0
Thanked 1 Time in 1 Post
Default

Nice job, thanks for the pictures
Pipedreams is offline   Reply With Quote
Old 07-05-2005, 06:19 PM   #9
C6FirstVette
CF Senior Member
Thread Starter
 
C6FirstVette's Avatar
 
Member Since: Jul 2004
Location: Jupiter Florida
Posts: 2,907
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Thanks all...guess I better post torque numbers now...did a cross link post over on DC forum and one member got a little 'aggressive'...anyway I torqued to 120 lbs (mr aggressive says 125 lbs and MUST replace bolts each time you remove...assume he will explain the logic to that).
Michael
C6FirstVette is offline   Reply With Quote
Old 07-05-2005, 07:36 PM   #10
JmpnJckFlsh
CF Senior Member
 
Member Since: Jul 2001
Location: Spicewood, Texas, USA TX-Texas
Posts: 4,456
Thanks: 0
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by C6FirstVette
Thanks all...guess I better post torque numbers now...did a cross link post over on DC forum and one member got a little 'aggressive'...anyway I torqued to 120 lbs (mr aggressive says 125 lbs and MUST replace bolts each time you remove...assume he will explain the logic to that).
Michael
I read that exchange. That DC member is a well-qualifed Corvette technician, but I wouldn't take it personally if I were you. The torque numbers were covered on CF in a separate thread today. You offered valuable, useful information even without the torque numbers. Besides, on something as critical as calipers, I would not use torque numbers posted on the internet anyway...I would order the service manual and read it for myself.
JmpnJckFlsh is offline   Reply With Quote
Old 07-05-2005, 07:42 PM   #11
AceVentura
CF Senior Member
 
AceVentura's Avatar
 
Member Since: Oct 2004
Location: Arlington VA
Posts: 457
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Excellent post but ya got me dizzy when I looked into that bucket picture! Please let us know if it keeps the rust stains from occurring on the rims after washing the rotors during a car wash.
Thanks!
AceVentura is offline   Reply With Quote
Old 03-19-2011, 06:25 PM   #12
KillerVette
CF Senior Member
 
Member Since: Nov 2003
Location: Near Philadelphia PA
Posts: 726
Thanks: 0
Thanked 1 Time in 1 Post
Default

are you saying to use the steel wool and acetone on the rotor itself where the brake pads would touch?
KillerVette is offline   Reply With Quote
Old 03-19-2011, 08:05 PM   #13
BadAV
CF Senior Member
 
BadAV's Avatar
 
Member Since: Jul 2005
Location: O'Fallon MO
Posts: 872
Thanked 20 Times in 20 Posts
Default

I don't think the zinc phosphate wash will hold up over the long term. It's meant more as a surface prep prior to painting and to keep rust off parts over a short timeframe.

If you wanted to try something that might, after doing the cleanup you could mask off the braking surfaces and try a cold galvanizing spray paint. I'm not sure if it would hold up to the heat, though as I've never used it except on galvanized radiators at work. I also don't see why you couldn't use hi-heat spray paint.
BadAV is online now   Reply With Quote
Old 03-19-2011, 08:53 PM   #14
djbrun
CF Senior Member
 
djbrun's Avatar
 
Member Since: Sep 2008
Location: San Jose California
Posts: 2,278
Thanked 46 Times in 41 Posts
Default

The caliper bracket bolts (front and rear) are 129 ft-lbs. The caliper slide pins are 23 ft-lbs, and the manual does not indicate one time use only on either one.

DJ
djbrun is offline   Reply With Quote
Old 03-19-2011, 09:04 PM   #15
johnodrake
Moderator
Support Corvetteforum!
 
johnodrake's Avatar
 
Member Since: Dec 2002
Location: Bradenton FL
Posts: 34,539
Thanked 29 Times in 23 Posts
Default

Wow! a 5 year old thread
johnodrake is offline   Reply With Quote
Old 03-19-2011, 11:25 PM   #16
gunterwalker
CF Senior Member
 
gunterwalker's Avatar
 
Member Since: Oct 2010
Location: Cape May, NJ; Guntersville, AL; Orange Beach, AL
Posts: 2,314
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by johnodrake View Post
Wow! a 5 year old thread
Happens everyday.
gunterwalker is offline   Reply With Quote
Old 03-19-2011, 11:36 PM   #17
davidtcpa
CF Senior Member
Support Corvetteforum!
St. Jude Donor '11-'12-'13-'14-'15-'16
 
davidtcpa's Avatar
 
Member Since: Dec 2009
Location: Boca Raton FL
Posts: 4,655
Thanked 19 Times in 18 Posts
Default

Drove me nuts also. I just painted mine black. Drive for 5 mins and whatever excess paint I got on the rotors rubbed off. It has been 6 months now and still looks good!
davidtcpa is offline   Reply With Quote
Old 03-20-2011, 10:44 PM   #18
kevakasper
CF Senior Member
No-IL Events Coordinator
St. Jude Donor '12-'13-'14-'15-'16
 
kevakasper's Avatar
 
Member Since: Mar 2010
Location: Hawthorn Woods Illinois
Posts: 2,894
Thanked 13 Times in 13 Posts
Default

I sandblasted mine, acid etching primer, silver 2 stage paint, clear.


[IMG][/IMG]
[IMG][/IMG]
[IMG][/IMG]
[IMG][/IMG]
kevakasper is offline   Reply With Quote
Old 03-21-2011, 06:48 AM   #19
KillerVette
CF Senior Member
 
Member Since: Nov 2003
Location: Near Philadelphia PA
Posts: 726
Thanks: 0
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by gunterwalker View Post
Happens everyday.
my bad about the old thread, never really looked at the post dates. Good news is that I got enough feedback to give me ideas to do this project
KillerVette is offline   Reply With Quote
Old 03-21-2011, 07:11 AM   #20
breecher_7
CF Senior Member
 
Member Since: Feb 2009
Location: The Moon
Posts: 4,900
Thanks: 0
Thanked 2 Times in 2 Posts
Default

Quote:
Originally Posted by djbrun View Post
The caliper bracket bolts (front and rear) are 129 ft-lbs. The caliper slide pins are 23 ft-lbs, and the manual does not indicate one time use only on either one.

DJ
Sounds about right, ive never personally "torqued" a brake caliper bracket though..

And you are correct, they are not torque to yield like head bolts, they are fine to re-use.
breecher_7 is offline   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • Rusty OEM rotors...my little project to attack this subject>>>
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    Cars and Coffee by HOD at PBIR>>> C6FirstVette C7 General Discussion 1 08-11-2014 03:08 PM
    C6 Seats... C6FirstVette C6 Corvette General Discussion 24 02-15-2011 01:38 PM
    Great Race Car trailer for Sale>>> C6FirstVette C6 Parts for Sale/Wanted 2 01-27-2007 06:33 AM
    Dan's (Exotic Vette Inc) cargo partition arrived...what a piece of C6FirstVette C6 Corvette General Discussion 96 01-08-2006 11:35 PM
    New mod for today...very significant!>> C6FirstVette C6 Corvette General Discussion 14 07-27-2005 08:39 AM


    Tags
    brake, cast, clean, elise, iron, lotus, oem, paint, removing, rotars, rotor, rotors, rust, rusted, rusty

    Thread Tools Search this Thread
    Search this Thread:

    Click for 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

    Forum Jump


    All times are GMT -4. The time now is 07:24 PM.