69 vert underbody repair process - Team Camaro Tech
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  #1  
Old Oct 24th, 12, 11:37 AM
truss truss is offline
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todd
 
Join Date: Sep 2012
Location: boise idaho
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Default 69 vert underbody repair process

Hey guys, All of my underbody floor parts arrive next week and so the shop and I will be starting to tear down my 69 vert. I am trying to get as educated on this process as I can. So....I have read references in the site that indicate starting from the back and working forward. I am assuming with me having to put this on a rotisserie at some point that i need to get the rear frame rails and trunk done first. My thinking has been to sure up the frame by getting the new rockers in first and then going from there with the rest....I am open to any suggestions from you guys...especially you guys who have had to do this.....thx for the help and suggestions.

Last edited by truss; Oct 24th, 12 at 09:34 PM.
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  #2  
Old Oct 24th, 12, 08:14 PM
truss truss is offline
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todd
 
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Default Re: 69 vert underbody repair process

does knowone know how to do this?????
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  #3  
Old Oct 24th, 12, 08:21 PM
BPOS BPOS is offline
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Al
 
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Default Re: 69 vert underbody repair process

It would help if you said which parts you are replacing - complete floor, bracing, rockers, patch panels, everything, etc.
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69 PJ Convert, RS added, 383, Pro-Filer 195s, 2004R, 3.73 posi 8.5, C6/LS1 Brakes, etc "Big hitter, The Lama....long." Carl Spackler
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  #4  
Old Oct 24th, 12, 09:37 PM
truss truss is offline
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todd
 
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Default Re: 69 vert underbody repair process

[QUOTE=BPOS;1745989]It would help if you said which parts you are replacing -

I am replacing full floors,rear frame rails, inner/outer rockers, toe boards all of the frame parts underneath....full trunk stuff.
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  #5  
Old Oct 25th, 12, 06:24 AM
chops chops is offline
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Greg
 
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Default Re: 69 vert underbody repair process

If you are putting in a full one piece floor, your shop wants to tackle that first. This is a drastic critical procedure that will make or break everything you try to do to your vert afterwards.
If your shop has no experience in this, and I suspect this may be the case, then find a shop that has.

The shell has to be placed on a jig, squared per Fisher datum, and temporarily reinforced with square tubing just to start. There are pictures and threads on this. It has to be spot on square for anything to fit right afterwards. So full floor first, then rockers, everything else is cake.
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  #6  
Old Oct 25th, 12, 08:58 AM
tp_smith tp_smith is offline
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Patrick
 
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Default Re: 69 vert underbody repair process

I agree that a rigid jig is needed if you plan to replace the floor, rockers, trunk pan and frame rails. Only after these panels are replaced would I consider putting the convertible on a rotisserie. The unibody might buckle if a major part like a rocker panel is cut out and the car is only supported at four outer points by a rotisserie. The shop that you select should have experience with a major rebuild like you are describing and have a jig. The particular order of the parts being cut out and replaced varies. Starting from the back and working forward is just as valid as starting from the front and working back. On my project, I cut out what was the most rotten and left cutting out the semi good metal last in order to maintain rigitly of the body.

There are several build projects that describe the process of replacing the parts that you mentioned. One of them was written by 6781Camaro (Todd), another good one is being written by tjgmp (Tim).
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  #7  
Old Oct 25th, 12, 10:22 AM
tjgimp tjgimp is offline
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Tim
 
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Default Re: 69 vert underbody repair process

Hi Todd. I have a 68 convertible that I am currently trying to build. I needed to replace just about everything. Keep in mind that I am only a beginner if you decide to look at my thread. I did take a lot of pictures so that might help you. I read a lot before I built up enough confidence to tackle this project. Todd has a great thread written in an almost teacher to student way. (I hope that makes sense.) Heres the link: http://www.camaros.net/forums/showthread.php?t=146455
It was great for a beginner like me to follow. Another invaluable reference is www.screaminperformance.net click on the blue convertible call resurrection. That is the road map that I tried to follow. It has great pics.

"If your shop has no experience in this, and I suspect this may be the case, then find a shop that has."-Chops
I agree with Chops. If you are paying them, they should sit down and discuss a build plan with you. good luck.
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My 1968 convertible build:

http://www.camaros.net/forums/showthread.php?t=175855
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  #8  
Old Oct 25th, 12, 10:37 AM
truss truss is offline
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todd
 
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Smile Re: 69 vert underbody repair process

Quote:
Originally Posted by chops View Post
If you are putting in a full one piece floor, your shop wants to tackle that first. This is a drastic critical procedure that will make or break everything you try to do to your vert afterwards.
If your shop has no experience in this, and I suspect this may be the case, then find a shop that has.

The shell has to be placed on a jig, squared per Fisher datum, and temporarily reinforced with square tubing just to start. There are pictures and threads on this. It has to be spot on square for anything to fit right afterwards. So full floor first, then rockers, everything else is cake.
This is an approach I had not thought of...however the question that comes to mind for me right away is if the rockers are bad then what do you attach the floor to...front to back and then sides (rockers) later.
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  #9  
Old Oct 25th, 12, 01:11 PM
TB69 TB69 is offline
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Ted
 
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Location: Cedarburg, WI
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Default Re: 69 vert underbody repair process

You have a little fun ahead of you. My 69 vert needed pretty much most of the items you listed. I completed it without a jig but did it piece at a time by myself. I had no previous body work experience.

Suggestions that worked for me:
Level the car and weld braces across the door frames and make an x spanning from each rear panel to the opposite side kick panel.

Measure everything, take notes and keep a level handy!!!!!!!!!!!!!!!

Keep doors and trunk lid on and adjusted.

Start with the full floor. Remove old floor but make note of the location of the vert only K brace and bolt on the X brace in if you have it. Screw and clamp new floor in place.

Move on to the Toe boards. Weld to firewall but screw to full floor.

Move onto the inner wheel houses. I removed and replaced them 1 at a time leaving the quarter and outer in place. It is a little more difficult but it makes the alignment easier. Screw in place and weld later.

I moved onto the full floor, cross rail and frame rails. I removed them all as 1 unit dropping them out keeping the quarters, tail pan and wheelhouses in place. The bottoms of the quarters need to be pulled outward so the assembly can be removed in 1 peice. Set up the old assembly on horses and use as a template to make the new assembly. I added the trunk drops later. Screw together new assembly next to old one and once all dims match weld the assembly up. Sneak the new assembly up into the car and screw in place and bolt to tail pan through bumper bolt holes. I had to use a come along to pull the frame rails tight to the cabin full floor. Once fit is completed start welding the truck floor assembly in place. Weld to inner wheelhouses, rear seat divider, cabin full floor.

I did not replace my rockers and it would make sense move onto those at this point. Others my have better ideas on when to replace the rockers but make sure you keep braces in place.

Next cut out 1 quarter at a time. Just cutting away enough at the wheel well so the outer wheelhouse can be removed. Fit outer wheelhouse and screw in place. Once set move onto removing the rest of that quarter. Carefully remove quarter keeping tail pan in place. Once quarter is fit to trunk gutter, tailpan, trunk lid, rocker, pinch weld, door and outer wheelhouse remove it and weld the outer wheelhouse to the inner wheelhouse and vert brace. Install trunk drops and put the quarter back on. Weld it up but screw to tail pan. Move onto the other side.

Once quarters are complete install new tail pan.

At this point the car went onto a rotisserie to finish welding and clean up welds.

This worked for me and my gaps turned out great!

Good luck!

Ted
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  #10  
Old Oct 25th, 12, 05:16 PM
truss truss is offline
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todd
 
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Default Re: 69 vert underbody repair process

Ted...thanks so much for such a detailed reply....glad to see that you did all this on a 69 like mine....I will certainly take some of your advice...any pics of your before during and afterwords stuff...once again,thx
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  #11  
Old Oct 26th, 12, 07:50 AM
TB69 TB69 is offline
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Ted
 
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Default Re: 69 vert underbody repair process

I do have pics but unfortunately I have yet to figure out how to attached to this site. I can figure out most things but this seems to elude me. I can't even get my signature line to show. Oh well.

Take your time, take a lot of pic's with notes and don't open more than you are going to fix at that immediate moment. Break it up into small manageable projects. Let me know if you have any questions.

Good luck.

Ted
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  #12  
Old Oct 26th, 12, 12:47 PM
truss truss is offline
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todd
 
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Wink Re: 69 vert underbody repair process

Quote:
Originally Posted by TB69 View Post
I do have pics but unfortunately I have yet to figure out how to attached to this site. I can figure out most things but this seems to elude me. I can't even get my signature line to show. Oh well.

Take your time, take a lot of pic's with notes and don't open more than you are going to fix at that immediate moment. Break it up into small manageable projects. Let me know if you have any questions.

Good luck.

Ted
I will definately ask questions...and you are more than ok to send picsto my email if you want....thx,todd
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  #13  
Old Nov 1st, 12, 09:03 AM
truss truss is offline
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todd
 
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Default Re: 69 vert underbody repair process

I will be putting this on a firstgenjig....plans are on way....anybody have experience with this jig?
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  #14  
Old Nov 1st, 12, 10:29 AM
tp_smith tp_smith is offline
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Patrick
 
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Location: Tomball TX, DeRidder LA
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Default Re: 69 vert underbody repair process

If you bought the plans for a jig, maybe you are planning to do the work yourself.

I am intimately aware of the jig. I built the same one. I made some minor modifications to the jig to compensate for the lack of a roof on a convertible. If you care to look at my jig, it is in the build project of this forum. The title of the thread is "1969 Firebird Convertible". The parts you mentioned that needed to be changed are identical on a Firebird.
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  #15  
Old Nov 1st, 12, 10:36 AM
truss truss is offline
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todd
 
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Default Re: 69 vert underbody repair process

Quote:
Originally Posted by tp_smith View Post
If you bought the plans for a jig, maybe you are planning to do the work yourself.

I am intimately aware of the jig. I built the same one. I made some minor modifications to the jig to compensate for the lack of a roof on a convertible. If you care to look at my jig, it is in the build project of this forum. The title of the thread is "1969 Firebird Convertible". The parts you mentioned that needed to be changed are identical on a Firebird.
Yes...it looks like it will work out that i will be doing aloot of the work myself as i cannot afford the body shop cost especially with a body guy that may not know as much as he should. It is ok as i do have much experience with mustang converts and i did build my 67 eleanor. This is why i think the best thing to do is go with a jig so I have a better chance of getting things right. How much did your jig cost in materials.....thx for the help.
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