Search



Go Back   Third Generation F-Body Message Boards > Tech Boards > Body
Register Forgot Password?

Body General body information and techniques for restoration, repairs, and modifications.

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 05-21-2012, 04:55 AM   #1
Supreme Member
 
86WS6's Avatar
 
Join Date: Jul 2007
Location: Great Smoky Mountains, Bryson City North Carolina
Posts: 1,182
Car: 86WS6 30K and 82WS7 24K
Engine: 86:305 TPI, 82: 305 LG4
Transmission: 86:700R4, 82: T200C
Axle/Gears: 86:3:27 9 bolt, 82: 3:23 10 bolt

Classifieds Rating: (1)
How to straighten a bent subframe

Before we bought our car, someone using a garage lift to service the car had placed the lift points incorrectly under the front passenger subframe. The weight of the car bent the bottom of the fender and compressed the sheet metal subframe slightly. This damage is minor, and is only cosmetic. One cannot see the damage unless you lay on the ground and look up at the floor pan. I straightened out the bottom of the fender, but have not been able to figure out how to straighten out the stamped subframe piece. The floor pan is not bent. The car has been like this since before we bought it in 2006, and the only reason to repair the damage is to be able to compete in shows where the undercarrage is checked. It may be beyond my abilities, and it may be best to take it to a body shop? Any ideas will be appreciated. Thanks in advance. Charles
__________________
86WS6 is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 06:15 AM   #2
Senior Member
 
calamitascamaro's Avatar
 
Join Date: Apr 2008
Location: Putnam Valley, NY
Posts: 696
Car: 1992 RS 6spd
Engine: Carbed 357c.i.
Transmission: Built T56
Axle/Gears: Soon to be Strange S60

Classifieds Rating: (5)
Send a message via AIM to calamitascamaro Send a message via Yahoo to calamitascamaro
Re: How to straighten a bent subframe

If you have access to a dent puller you can fix this. Put the car up in the air, and put either a slide hammer, or a stud puller on it, and proceed to straighten. Use a bit of metal glaze and some sanding, then primer and paint to match.
calamitascamaro is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 06:35 AM   #3
Senior Member
 
89rs454's Avatar
 
Join Date: Feb 2009
Location: USA
Posts: 879
Car: 1989 RS
Engine: Stock 1995 Formula LT1
Transmission: 4l60e
Axle/Gears: 3.23 jump rope

Classifieds Rating: (0)
Re: How to straighten a bent subframe

Does it vibrate at around 60? Get an aliment. I hope the chassis don't twist that easy.
__________________




Stock Lt1 Third gen
89rs454 is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 06:52 AM   #4
Senior Member
 
calamitascamaro's Avatar
 
Join Date: Apr 2008
Location: Putnam Valley, NY
Posts: 696
Car: 1992 RS 6spd
Engine: Carbed 357c.i.
Transmission: Built T56
Axle/Gears: Soon to be Strange S60

Classifieds Rating: (5)
Send a message via AIM to calamitascamaro Send a message via Yahoo to calamitascamaro
Re: How to straighten a bent subframe

Quote:
Originally Posted by 89rs454 View Post
Does it vibrate at around 60? Get an aliment. I hope the chassis don't twist that easy.
What you said doesn't make sense. Someone jacked up his car where the front fender meets the subframe. It damaged the boxed end of the subframe. An alignment wont fix that. And it wont give you a vibration. He's talking about showing his car at car shows....
calamitascamaro is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 07:13 AM   #5
Supreme Member
 
Edwardgp's Avatar
 
Join Date: Jan 2012
Location: Washington State
Posts: 1,824
Car: 1983 BB 1995 Z28 Camaro's
Engine: 454-350
Transmission: TH350-4l60e
Axle/Gears: 373 posi-Stock

Classifieds Rating: (0)
Re: How to straighten a bent subframe

Edwardgp is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 07:39 AM   #6
Senior Member
 
89rs454's Avatar
 
Join Date: Feb 2009
Location: USA
Posts: 879
Car: 1989 RS
Engine: Stock 1995 Formula LT1
Transmission: 4l60e
Axle/Gears: 3.23 jump rope

Classifieds Rating: (0)
Re: How to straighten a bent subframe

Quote:
Originally Posted by calamitascamaro View Post
What you said doesn't make sense. Someone jacked up his car where the front fender meets the subframe. It damaged the boxed end of the subframe. An alignment wont fix that. And it wont give you a vibration. He's talking about showing his car at car shows....
If someone jacked his car up where it wasn't right on the jack points could twist your chassis yes. I wish you the best of luck.
89rs454 is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 07:43 AM   #7
Senior Member
 
calamitascamaro's Avatar
 
Join Date: Apr 2008
Location: Putnam Valley, NY
Posts: 696
Car: 1992 RS 6spd
Engine: Carbed 357c.i.
Transmission: Built T56
Axle/Gears: Soon to be Strange S60

Classifieds Rating: (5)
Send a message via AIM to calamitascamaro Send a message via Yahoo to calamitascamaro
Re: How to straighten a bent subframe

Quote:
Originally Posted by 89rs454 View Post
If someone jacked his car up where it wasn't right on the jack points could twist your chassis yes. I wish you the best of luck.
Again, he says in the OP that it is cosmetic in nature. So an alignment wont fix the damage. I wish you the best of luck as well.
calamitascamaro is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 07:55 AM   #8
Senior Member
 
calamitascamaro's Avatar
 
Join Date: Apr 2008
Location: Putnam Valley, NY
Posts: 696
Car: 1992 RS 6spd
Engine: Carbed 357c.i.
Transmission: Built T56
Axle/Gears: Soon to be Strange S60

Classifieds Rating: (5)
Send a message via AIM to calamitascamaro Send a message via Yahoo to calamitascamaro
Re: How to straighten a bent subframe

Again, in his OP, he said he is posting to fix the "cosmetic damage" to go to car shows where they judge the undercarriage of the vehicle in the over score. Which would be the point of posting his problem. Read before you speak. And chill with the language it's not needed or wanted on this site.

Last edited by 88txiroc; 05-21-2012 at 11:18 AM.
calamitascamaro is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 07:55 AM   #9
Supreme Member
 
Twin_Turbo's Avatar
 
Join Date: Jun 2000
Location: Enschede, Netherlands
Posts: 4,471
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27

Classifieds Rating: (24)

Send a message via AIM to Twin_Turbo
Re: How to straighten a bent subframe

Please enlighten me, what exactly are the jacking points? There are none, these fricken subframes are made of thin multilayer sheets and they dent very very easily when jacking up the car.

The flap where the fender bolts down can be fixed with some hammering/dollying most likely although it'll never be like new. Almost all these cars have that damage and a bowed out fender relative to the door.

A dent puller may help you clean up the underside of your frame, or you can weld a plate on it as a jacking reinforcement. Or fab some box steel SFCs and mount them outward against the pinch area, that should conceal most of the damage left after hammering.

Click the image to open in full size.

Click the image to open in full size.
Twin_Turbo is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 08:02 AM   #10
Senior Member
 
calamitascamaro's Avatar
 
Join Date: Apr 2008
Location: Putnam Valley, NY
Posts: 696
Car: 1992 RS 6spd
Engine: Carbed 357c.i.
Transmission: Built T56
Axle/Gears: Soon to be Strange S60

Classifieds Rating: (5)
Send a message via AIM to calamitascamaro Send a message via Yahoo to calamitascamaro
Re: How to straighten a bent subframe

I use wood in between the jack and the vehicle, when the vehicle goes up, the wood compresses and almost always prevents damage under the vehicle. There may be no "right" place to lift these cars, but the absolute wrong place is the fender mounting tab lol.
__________________


*UMI Weld in SFC's* *UMI Wonderbar* *UMI LCA's* *Ram Powergrip Clutch* *Goodyear KDW's*
calamitascamaro is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 08:04 AM   #11
Senior Member
 
calamitascamaro's Avatar
 
Join Date: Apr 2008
Location: Putnam Valley, NY
Posts: 696
Car: 1992 RS 6spd
Engine: Carbed 357c.i.
Transmission: Built T56
Axle/Gears: Soon to be Strange S60

Classifieds Rating: (5)
Send a message via AIM to calamitascamaro Send a message via Yahoo to calamitascamaro
Re: How to straighten a bent subframe

..

Last edited by calamitascamaro; 05-21-2012 at 11:37 AM.
calamitascamaro is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 08:11 AM   #12
Senior Member
 
calamitascamaro's Avatar
 
Join Date: Apr 2008
Location: Putnam Valley, NY
Posts: 696
Car: 1992 RS 6spd
Engine: Carbed 357c.i.
Transmission: Built T56
Axle/Gears: Soon to be Strange S60

Classifieds Rating: (5)
Send a message via AIM to calamitascamaro Send a message via Yahoo to calamitascamaro
Re: How to straighten a bent subframe

..

Last edited by calamitascamaro; 05-21-2012 at 11:37 AM.
calamitascamaro is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 08:16 AM   #13
Senior Member
 
soarestransam's Avatar
 
Join Date: May 2011
Location: New Bedford MA
Posts: 512
Car: 1988 Gta trans am project 1-1/2
Engine: 86 4 bolt main cammed sbc 355 tpi
Transmission: 89 wc bw t5
Axle/Gears: Bw 9 bolt (3.27) pbr 11in

Classifieds Rating: (0)
Re: How to straighten a bent subframe

This does create a problem bent fender tabs is bad cause it weakens the metal causing rust which will spread out to the floors that happened on my 89 gta i had

Last edited by 88txiroc; 05-21-2012 at 11:20 AM.
soarestransam is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 08:20 AM   #14
Senior Member
 
soarestransam's Avatar
 
Join Date: May 2011
Location: New Bedford MA
Posts: 512
Car: 1988 Gta trans am project 1-1/2
Engine: 86 4 bolt main cammed sbc 355 tpi
Transmission: 89 wc bw t5
Axle/Gears: Bw 9 bolt (3.27) pbr 11in

Classifieds Rating: (0)
Re: How to straighten a bent subframe

One thing u can do also is unbolt the fender bolt that goes into the rocker then cut off that piece that got bent an replace it with new sheet metal, then drill a hole an nut an bolt the fender back alot of my buddies done this on there 3rd gen i havent seen one 3rd gen with the fender tabs perfectly straight They were always either bent inwards or outwards
__________________
1988 gta trans am, 355 process of hsr xe comp cam, 906 opened 202 intake 1.6 exhaust vortec heads, forged bottom end with wesco piston, eagle forged rods, stock crank, wc borg warner t5 conversion with centerforce cluth, 3 row champion aluminun rad, all poly energy suspension bushing an endlinks, str8 pipe 3in borla adj cat-back, founders performance none adj lca an phb, all moog steering components an ball joints

Pontiac (I drive excitement)
soarestransam is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 08:21 AM   #15
Senior Member
 
89rs454's Avatar
 
Join Date: Feb 2009
Location: USA
Posts: 879
Car: 1989 RS
Engine: Stock 1995 Formula LT1
Transmission: 4l60e
Axle/Gears: 3.23 jump rope

Classifieds Rating: (0)
Re: How to straighten a bent subframe

Quote:
Originally Posted by soarestransam View Post
This does create a problem bent fender tabs is bad cause it weakens the metal causing rust which will spread out to the floors that happened on my 89 gta i had
I bet it does, it must be bad.
89rs454 is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 09:34 AM   #16
Member
 
jhainer's Avatar
 
Join Date: Jan 2007
Location: Lawrenceville Ga
Posts: 369
Car: 1986 BBC Iroc
Engine: 454
Transmission: th400
Axle/Gears: 3.42

Classifieds Rating: (0)
Re: How to straighten a bent subframe

before he owned it !!!! now wants to fix it for cosmetic reasons please go back up and read what he says before posting unless your doing it to be just agrevating . lets recap

no drivability issue
only cosmetic
fixing for judges to give more points in shows
boxed portion of subframe dented in alittle no structure damage just cosmetic
did i forget anything

mine are bad too but since i will be fixing mine for myself not for judges i'm just going to box them back in. the previous owner of mine high sided it on a tree or something crushed the rocker in and the bottom door sill and the passenger side floor i fixed the door sill and the floor and the rocker but the subframe from when he pulled the car a chain has a rip in it and is dented pretty bad but as for yours i would do a dent puller the weld type weld the pins on and pull the box back into shape and then clean up and paint might hve to use some filler to smooth but for a show car it's the stuff you have to do.

Last edited by 88txiroc; 05-21-2012 at 11:20 AM.
jhainer is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 09:39 AM   #17
Senior Member
 
calamitascamaro's Avatar
 
Join Date: Apr 2008
Location: Putnam Valley, NY
Posts: 696
Car: 1992 RS 6spd
Engine: Carbed 357c.i.
Transmission: Built T56
Axle/Gears: Soon to be Strange S60

Classifieds Rating: (5)
Send a message via AIM to calamitascamaro Send a message via Yahoo to calamitascamaro
Re: How to straighten a bent subframe

Quote:
Originally Posted by jhainer View Post
before he owned it !!!! now wants to fix it for cosmetic reasons please go back up and read what he says before posting unless your doing it to be just agrevating . lets recap

no drivability issue
only cosmetic
fixing for judges to give more points in shows
boxed portion of subframe dented in alittle no structure damage just cosmetic
did i forget anything
calamitascamaro is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 11:25 AM   #18
Moderator
 
Join Date: Jan 2002
Location: San Antonio, TX
Posts: 1,193

Classifieds Rating: (0)

Re: How to straighten a bent subframe

All,

I have cleaned this thread up. Please do NOT quote others that are bypassing the swear filter. Just report it and I will deal with it.

89rs,

Consider this your one and only warning. If you continue to try to bypass the filter, I will ban you and your IP. Please do not make it come to that. This is a family site. Keep it clean. Saying that you were "drinking" is not an excuse.

88txiroc
88txiroc is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 04:06 PM   #19
Supreme Member
 
86WS6's Avatar
 
Join Date: Jul 2007
Location: Great Smoky Mountains, Bryson City North Carolina
Posts: 1,182
Car: 86WS6 30K and 82WS7 24K
Engine: 86:305 TPI, 82: 305 LG4
Transmission: 86:700R4, 82: T200C
Axle/Gears: 86:3:27 9 bolt, 82: 3:23 10 bolt

Classifieds Rating: (1)
Re: How to straighten a bent subframe

Quote:
Originally Posted by calamitascamaro View Post
If you have access to a dent puller you can fix this. Put the car up in the air, and put either a slide hammer, or a stud puller on it, and proceed to straighten. Use a bit of metal glaze and some sanding, then primer and paint to match.
Thanks for the great information. The damage is very minor, and on a DD I would not bother to repair it. No bowing of the fender, and the bottom edge of the fender straightened out almost perfectly. The worse part of the fender was trying to match the paint.

I took the car to a body shop today who we have used for years. They said that they will use the technique you described above, and make a repair that will not be noticeable. We pulled up this tread, and the folks at the body shop got a pretty good laugh reading some of the posts.

Charles
86WS6 is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 07:07 PM   #20
Senior Member
 
calamitascamaro's Avatar
 
Join Date: Apr 2008
Location: Putnam Valley, NY
Posts: 696
Car: 1992 RS 6spd
Engine: Carbed 357c.i.
Transmission: Built T56
Axle/Gears: Soon to be Strange S60

Classifieds Rating: (5)
Send a message via AIM to calamitascamaro Send a message via Yahoo to calamitascamaro
Re: How to straighten a bent subframe

Quote:
Originally Posted by 86WS6 View Post
Thanks for the great information. The damage is very minor, and on a DD I would not bother to repair it. No bowing of the fender, and the bottom edge of the fender straightened out almost perfectly. The worse part of the fender was trying to match the paint.

I took the car to a body shop today who we have used for years. They said that they will use the technique you described above, and make a repair that will not be noticeable. We pulled up this tread, and the folks at the body shop got a pretty good laugh reading some of the posts.

Charles
Glad I could help man. Have a good one.
calamitascamaro is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 07:42 PM   #21
Supreme Member
 
mantaguy's Avatar
 
Join Date: Nov 2010
Location: Mantua NJ
Posts: 3,390
Car: 1 Owner 1986 TA with a WS6 package
Engine: 5.0 EFI
Transmission: THM700R4
Axle/Gears: 277 Posi Speedo

Classifieds Rating: (3)
Re: How to straighten a bent subframe

That's exactly what happened to mine,I'm having new fenders and a new front bumper cover installed on my car and the body shop had a problem removing the right fender because of that.He has to do some metal work under there on both sides to make it right,if not the fenders will not install correctly.Click the image to open in full size.
I don't know when it happened but this had to be done with a shop lift,maybe back when I had a new exhaust system or new tires put on long'long time ago.I didn't know my car had rust and now that has to be fixed.

Last edited by mantaguy; 05-21-2012 at 07:46 PM.
mantaguy is offline vBGarage Page   Reply With Quote
Old 05-21-2012, 07:42 PM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > Body

Tags
3rd, bent, cost, damage, fbody, frame, front, gen, repair, straighten, straightened, subframe, thirgen, twisted, vehicle
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

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 11:21 PM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details