Need Tips on Removing Underbody Rust - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Problems and Service Talk about any mechanical problems you are having

Closed Thread
 
LinkBack Thread Tools Display Modes
post #1 of 11 (permalink) Old 05-15-2013, 07:08 PM Thread Starter
Newcomer
 
Join Date: Jan 2010
Posts: 7
Need Tips on Removing Underbody Rust

This is my first thread and need advice on how to remove rust from the underbody of my '09 cobalt. I live in northern Maine where it snows 6 months out of the year and the roads are heavily salted so I now have some descent sized rust spots spreading on the frame and underbody. What would be the best method of removing it all?
Jeffro52 is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old 05-15-2013, 07:31 PM
Staff Alumni


 
kmac's Avatar
 
Join Date: Jun 2012
Location: Coxsackie, NY
Posts: 297
Welcome! I'm sure someone with more knowledge will chime in eventually but as far as I know, frame rust just is what it is. Maybe grinding it off and welding everything back? I don't know, like I said, someone else will give some insight.

kmac is offline  
post #3 of 11 (permalink) Old 05-15-2013, 07:37 PM
Super Moderator
Staff Alumni
YourCobalt of the Month Winner


 
Blackbalts's Avatar
 
Join Date: Aug 2011
Location: Burnsville, Minnesota
Posts: 5,481
Garage
Welcome. Rust is a hard thing to battle. Cutting it all out is the only way to combat.

Sent from AutoGuide.com Free App


05 Mitsubishi Evolution 8
05 Chevy Cobalt LS (RIP 7/13/2013)
99 Nissan Altima GXE (Daily)
99 Subaru Legacy (Daily)
07 Jeep Liberty Limited (No longer the tow truck for the balt )

If you have questions and I'm not on please PM, notifications go straight to my phone 24/7.

My Showoff
Join YC on FB
Syndicate of Tuners.com
Blackbalts is offline  
 
post #4 of 11 (permalink) Old 05-15-2013, 11:15 PM
YourCobalt of the Quarter Winner
YourCobalt of the Month Winner


 
BankerBalt's Avatar
 
Join Date: Oct 2010
Location: Eagan MN
Posts: 4,647
Garage
Wire wheel it if just surface rust and paint primer over it

Forged L61 BW S252 Turbocharged Showoff Thread
BankerBalt is offline  
post #5 of 11 (permalink) Old 05-16-2013, 06:20 AM
Forum Regular
 
Join Date: Mar 2013
Location: State College, PA
Posts: 134
Garage
undercoating spray works pretty decent as well. And its super cheap
rms4067 is offline  
post #6 of 11 (permalink) Old 05-16-2013, 07:24 AM
Super Moderator
Staff Alumni
YourCobalt of the Month Winner


 
Blackbalts's Avatar
 
Join Date: Aug 2011
Location: Burnsville, Minnesota
Posts: 5,481
Garage
Undercoating spray only works good for preventing rust. If you cover it up it can still spread.


05 Mitsubishi Evolution 8
05 Chevy Cobalt LS (RIP 7/13/2013)
99 Nissan Altima GXE (Daily)
99 Subaru Legacy (Daily)
07 Jeep Liberty Limited (No longer the tow truck for the balt )

If you have questions and I'm not on please PM, notifications go straight to my phone 24/7.

My Showoff
Join YC on FB
Syndicate of Tuners.com
Blackbalts is offline  
post #7 of 11 (permalink) Old 05-16-2013, 05:11 PM
Forum Regular
 
noblite's Avatar
 
Join Date: Mar 2011
Location: Southern IL
Posts: 177
You could use PRO15 I have used it a couple times it works well for stopping rust.
noblite is offline  
post #8 of 11 (permalink) Old 05-17-2013, 01:47 AM
Newcomer
 
Join Date: Apr 2013
Posts: 34
Pro15 isnt gonna stop rust its a rust inhibitor which means its just gonna slow it down. Only way to beat rust is to prevent it all together. Regular under coats before winter once winter is gone run it through a couple chassis washes at your local automated car wash to was off the sand salt mix
PitbullMean is offline  
post #9 of 11 (permalink) Old 05-20-2013, 09:50 PM
Contributor
 
keegs's Avatar
 
Join Date: Apr 2010
Posts: 311
I've been painting the frame on my Chevy truck for a few years now. I apply some rust remover/prep Fast Etch, before I paint it with Rustoleum. It's a dirty job and the rust comes back every year, especially around any welds.

I owned a Nissan pickup for 14 years. It alway ran great but the frame rotted away and it became unsafe to drive.

2010 Cobalt XFE
2006 Chevy Colorado 4x4
2005 Toyota Corolla
2013 Kubota M5640 SUD
keegs is offline  
post #10 of 11 (permalink) Old 05-21-2013, 03:33 AM
Staff Alumni
 
money_man's Avatar
 
Join Date: Mar 2012
Location: Halifax, N.S
Posts: 3,127
I live in the rust capital. Have any pictures of the rust you speak of?

2009 Ford Escape Limited - 3.0L, 6 speed auto, 4x4, 25/33 city/hwy imp mpg.
2017 F150 XLT-XTR - 5.0L, 4x4, 3.55's, E-locker, xtr chrome package, fx4 off-road package.
20/25 imp mpg
money_man is offline  
Sponsored Links
Advertisement
 
Closed Thread

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome