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Old Jan 13, 2010 | 05:58 PM
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Default Floor Pan Removal

Has anyone sucessfully removed a floor pan from a C5?

I've got a damaged passenger side one and need to pull it out for replacement.

I've tried for a short time with a heat gun as suggested in the service manual. Basically I have the car raised up, and I put a spare jack under the passenger floor board with some light pressure on the floor. I've then tried heating the edge with what I know to be a pretty good heat gun. The trouble is that I can't see how you're supposed to keep the panel edge hot the whole way around while applying pressure such that the old panel simply "pops" out. Or at least that's about how easy it appears to be from the service manual. I've also already go the interior brackets removed, so it's simply just the panel at this point.

It's not like I need to save the old panel, so I may go the route of a reciprocating saw to cut out the non-bonded areas, then go at the smaller pieces with the heat gun and scraper, but I'd rather not resort to that unless I can't pop it out all in one piece.

Any suggestions from someone who's done this excersize before?

Thanks,

Pete
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Old Jan 13, 2010 | 09:54 PM
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You need to apply heat to the flange and apply upward pressure on the panel at the same time to break the bond.

Go here and download the manual.

http://www.goodwrench.com/gmgoodwren...model=Corvette


The floor panel is serviced as separate left and
right side components (Fig.Ê3.43). The panels are
bonded around the outer edges and across the
seat mounting braces. For repair other than full
panel replacement see SMC Repair Procedures.
— REMOVE OR DISCONNECT —
1 Remove all panels and components to gain
access to the floor panel. This will include
removing seat and carpeting.
Notice: When servicing the right front
floor panel, the bonded and bolted
electrical component mounting brackets
must be removed. Remove or reposition
electrical components and wiring harness
as necessary to avoid damage.
2 Visually inspect for damage to the frame rail
and seat mounting brace, restore as much of
the damage as possible to specifications
using three-dimensional measuring
procedures.
3 Remove the side reinforcement bonded to
the floor panel and the frame rail (Fig.Ê3.44).
4 Remove the side reinforcement bonded to
the floor panel and the tunnel area
(Fig.Ê3.45). NOTE: Use care when removing
the reinforcement, if damaged during the
removal process replacement will be
necessary.
5 Apply upward force and heat simultaneously
to the floor panel as necessary to detach
adhesive. Remove damaged floor panel.

Important: Save wiring harness clips (3 per
side), for transfer to service floor panel.

Last edited by 69; Jan 13, 2010 at 09:58 PM. Reason: Add Link
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Old Jan 13, 2010 | 10:31 PM
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Use a chisel to first break off any adhesive squeeze out and then use the chisel to start the separating the panel from the flange while using heat and pressure. When you can smell the glue just starting to burn its just right.. it has to be really hot...
You can straighten the flange with hammer and dolly when the panel is out. Worked for me...
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Old Jan 14, 2010 | 12:23 AM
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Thanks guys. 69, those are the same instructions in the service manual. Like I said, they make it sound pretty easy, but with a floor jack pushing up on the bottom and the heat gun working the edges, I really didn't get it to budge.

JVetthead, I'll give that a shot. I went at the seat cross supports with a crowbar and heat gun and managed to at least get the middle one freed up. Maybe I'll get a bit more agressive around the edges.

Is the trick to get one of the corners to pop first, then simply work your way around from there? Or is it easier to start along one of the edges?

Thanks. At least there's someone who managed to get one out!
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Old Jan 14, 2010 | 09:22 AM
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Maybe you need to move to a heating torch, instead of the heat gun.
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Old Jan 14, 2010 | 09:34 AM
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You might try that.. If you are not saving the panels it would be much easier to cut them up first so you are not fighting the whole thing..
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Old Jan 14, 2010 | 04:30 PM
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If you break it up, take a pic or two...I've always wanted to see what those things look like inside.

Good luck!
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Old Jan 14, 2010 | 10:38 PM
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Here ya go!







Ya know that the ZO6 floor panel is carbon fiber and will directly fit that application. It MUCH stronger and a LOT lighter!

BC
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Old Jan 15, 2010 | 12:43 AM
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Bill,

Just wondering, but what exactly are those photos of? I mean, I know it's one of the floor boards cut, but those cuts look pretty clean. Were you using the floorboard for something else? Just curious.

I've already got an FRP replacement, but yes, I'll keep my eye out for the carbon variety as a future option.

I'll have to go at it with the heat gun and maybe a torch this weekend. You would think an 1100 degree gun would be enough. I'm hoping to avoid the recip saw just becuase I know the mess it's going to make. That fiberglass dust gets everywhere.

Will let you know how it goes.
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Old Jan 15, 2010 | 06:49 AM
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I knew someone would ask that question. GM has several bare chassis that they take to Carslile for display and theres one at Bowling Green KY. They have cut out floor panels. Heres the entire chassis:







Theres even a ZO6 chassis:



Originally Posted by pmsjr
Bill,

Just wondering, but what exactly are those photos of? I mean, I know it's one of the floor boards cut, but those cuts look pretty clean. Were you using the floorboard for something else? Just curious.

I've already got an FRP replacement, but yes, I'll keep my eye out for the carbon variety as a future option.

I'll have to go at it with the heat gun and maybe a torch this weekend. You would think an 1100 degree gun would be enough. I'm hoping to avoid the recip saw just becuase I know the mess it's going to make. That fiberglass dust gets everywhere.

Will let you know how it goes.
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Old Jan 15, 2010 | 07:20 AM
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Never knew thw C5 ZO6 used carbon fiber floorboards.

I thought all C5s used the Balsa wood honeycombed floorboards, which were pretty innovative. I bet a lot of C5 owners didn't know their car was partly constructed with wood ! Keep the termites away, LOL !

Hard to believe that even carbon fiber would be that much lighter than balsa wood ?
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Old Jan 15, 2010 | 07:31 AM
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Originally Posted by Oldvetter
Never knew thw C5 ZO6 used carbon fiber floorboards.

I thought all C5s used the Balsa wood honeycombed floorboards, which were pretty innovative. I bet a lot of C5 owners didn't know their car was partly constructed with wood ! Keep the termites away, LOL !

Hard to believe that even carbon fiber would be that much lighter than balsa wood ?
I had a chance to attend the C5/C6 roll out birthday bash and at the dinner, they auctioned off some C6 parts. One of them was a C6 ZO6 floor panel. I got to compare the C5 Balsa wood panel to the C6 ZO6 Carbon fiber one. HOLY Crap! There is a significant difference in rigidity and weight. You can pick up a C6 ZO6 front fender with TWO FINGERS and its very ridged. If I had to guess, the carbon floor panel weighted 3 lbs

At the dinner auction the First Ride in a ZO6 went up for auction. My wife bid up to $3000. I got out the duct tape and secured her to the chair after that price. It went to $6,000 ish

BC
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Old Jan 15, 2010 | 10:59 AM
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Originally Posted by pmsjr
Bill,

Just wondering, but what exactly are those photos of? I mean, I know it's one of the floor boards cut, but those cuts look pretty clean. Were you using the floorboard for something else? Just curious.

I've already got an FRP replacement, but yes, I'll keep my eye out for the carbon variety as a future option.

I'll have to go at it with the heat gun and maybe a torch this weekend. You would think an 1100 degree gun would be enough. I'm hoping to avoid the recip saw just becuase I know the mess it's going to make. That fiberglass dust gets everywhere.

Will let you know how it goes.
I dont think i would use a torch... You will burn the paint off at the very least!!
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Old Jan 15, 2010 | 11:17 AM
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Yeah, that has me concerned a bit too, but honestly most of the paint comes off with the adhesive, or at least it did on the brackets I had to remove from the top.

I'm guessing what I really need is some simple patience, the heat gun, and a good place to start. Once I get it moving along I would think I could just work my way around. But....I guess the trick is finding the good place to start.
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Old Jan 15, 2010 | 11:55 AM
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Wow, that chassis is pretty cool.
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Old Jan 15, 2010 | 07:42 PM
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Originally Posted by Bill Curlee
Here ya go!







Ya know that the ZO6 floor panel is carbon fiber and will directly fit that application. It MUCH stronger and a LOT lighter!

BC
Neat. Didn't know C5s had any carbon fibre in them other than the 2004 Commemorative Edition...learn something new every day!


pmsjr: What happened to your floor that forced you to rip it out??
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Old Jan 16, 2010 | 12:18 AM
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Go Time, it was originally a "salvage" vehicle. So while it wasn't running I assume they must have used a fork lift to move it around at the auction. They managed to punch a hole the size of your fist through the passenger floor right in front of the seat. It's been a great winter project!
Pete
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Old Jan 21, 2010 | 07:27 PM
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Well, this past weekend, and a bit more patience and I managed to get the floor board out. This time I used a small bottle jack instead of a floor jack and started along the front edge instead of along the long sides or back. Once I got a small section to pop I just worked my way around from there.

....and if it comes up in the future, I used 3-200mL 3m 8115 tubes to get it put back in.

Thanks for all the help!

Pete
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Old Jan 21, 2010 | 10:33 PM
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Cool..



I have built a couple salvage cars it can be fun..




<--- see my pics..

Last edited by JVetthead; Jan 21, 2010 at 10:36 PM.
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