Jump to content
HybridZ

body work


JimR

Recommended Posts

Ok Iv just finished my sbc convesion on my 77 280z now im readyto

start the body work.My question is has anyone ordered steel body panels from the Victoria British cotologe they have lower quarter panels that you weld in place . I have rust on all the common places such as lower front fenders rockers rear quarters ect. Is this the right way to go ? I am not a body man so any thing you could tell me would help. Thanks Jim:cuss:

Link to comment
Share on other sites

You cut off the rusted part. clean the area to be welded and do a overlap tack weld. Tack about 1 to 2 inches apart. go back and tack in between those tacks, repeat keeping in mind of keeping 1 to 2 inches part in the pass, untill you tacks produce a bead. remember to let it cool enough between passes. Then dress the weld (grind flush), bondo, primer, paint.

 

You do that tack process to keep metal warpage to a minimum.

 

You can just do 2 passes but I wouldn't recommend it for anything structal. maybe a fender patch panel. I would recomment to use seam sealer (I think it was called body dope) after you dress the tacks.

Link to comment
Share on other sites

Guest SouthGaZX

i've always wondered (as i havent started any of my body work yet.. and this will be my first body work project) when you overlap the pieces.. how do you get it to smooth out? do you grind the original metal to a fine thin where the overlap will be so there is minimal protrusion of the new metal.. then weld/grind/bondo etc? i was wondering the same with fiberglass... just say you were fiberglassing a fiberglasshood to your fiberglass fenders.. to make the whole front end one piece.. do you sand it down a little lower.. that way the layers of fiberglass builds it back up near original thickness.. then smooth it all out... or what?? i think we need a few links on basic body repair... ill search for some later on.. i love to read.. and can do just about anything if i've read about it (that way i have an idea of what direction to go) and then actually jump into it..ill try to post any links i find in a new post... thanks for any help on the questions above though.. this should help out the original poster also... not trying to hijack the thread.

Link to comment
Share on other sites

i've always wondered (as i havent started any of my body work yet.. and this will be my first body work project) when you overlap the pieces.. how do you get it to smooth out? do you grind the original metal to a fine thin where the overlap will be so there is minimal protrusion of the new metal.. then weld/grind/bondo etc? i was wondering the same with fiberglass... just say you were fiberglassing a fiberglasshood to your fiberglass fenders.. to make the whole front end one piece.. do you sand it down a little lower.. that way the layers of fiberglass builds it back up near original thickness.. then smooth it all out... or what?? i think we need a few links on basic body repair... ill search for some later on.. i love to read.. and can do just about anything if i've read about it (that way i have an idea of what direction to go) and then actually jump into it..ill try to post any links i find in a new post... thanks for any help on the questions above though.. this should help out the original poster also... not trying to hijack the thread.

 

Smoothing overlap weld. Thats what the bondo (body filler) is for. Body filler should not be more than a 1/8 inche thick on a panel. Sanding down body filler is a lot easier than grinding a panel flush.

Link to comment
Share on other sites

Guest SouthGaZX

i agree it is easier to sand filler... but if you overlap.. and then use body filler.. wouldnt you have a bow outward where the bondo transists to the repair panel...or would you have to use filler a pretty good way down the body to slowly transist up to the new panel height? sorry if these questions are dumb.. but to me if i put a repair panel on the side of the car.. and looked at it in the light.. smoothed out with body filler or not you'd be able to tell it bowed out where the patch was...(yes yes i know people have done this for years and years and years) but.. maybe i just dont get it because i've never done it? lol anyone have any pics of repairs they've done... before the body filler... during the body filler... and then the final product? i've seen austins work.. and i saw the new pics of porkchop where the hood and fenders were connected together.. anyone have any close ups though? my neighbor is into body work and is painting a vette... maybe i need to get in good with him and check out some of the action

Link to comment
Share on other sites

i agree it is easier to sand filler... but if you overlap.. and then use body filler.. wouldnt you have a bow outward where the bondo transists to the repair panel...or would you have to use filler a pretty good way down the body to slowly transist up to the new panel height? sorry if these questions are dumb.. but to me if i put a repair panel on the side of the car.. and looked at it in the light.. smoothed out with body filler or not you'd be able to tell it bowed out where the patch was...(yes yes i know people have done this for years and years and years) but.. maybe i just dont get it because i've never done it? lol anyone have any pics of repairs they've done... before the body filler... during the body filler... and then the final product? i've seen austins work.. and i saw the new pics of porkchop where the hood and fenders were connected together.. anyone have any close ups though? my neighbor is into body work and is painting a vette... maybe i need to get in good with him and check out some of the action

 

it would curve more outward, but keep in mind that these panels aren't that thick, maybe 1/32 inche at the most. so it wouldn't be an issue.

 

You overlap weld for a couple of reasons.

 

a lap joint is stronger than a butt joint (butting the pieces up against each other and then welding).

 

If you butt joint using tacks, the leading edge will not be straight it will stretch the metal around the tacks. So the straight edge between tacks will be spaced away from each other. Then to fix the spacing, you would have to use bigger tacks --> longer welds --> more heat = warpage.

Link to comment
Share on other sites

Guest SouthGaZX

i see what you are saying now... and i also read on that site that you can direct more of the heat toward the bottom layer of metal.. so you dont burn through the top.. it makes more sense now... now one more question on this subject... would it be possible to weld your stock hood to the stock front fenders.. and make the front end raise up or would it be too heavy.... if so you could possibly put gas shocks to help raise the hood.. but if you're going through all that trouble.. why not get better looking glass parts... lol

Link to comment
Share on other sites

Jim,

You need to flange the metal first so it's flush after welding. That way it won't bow outward. After grinding I coat the welded area with POR-15 on both sides. Seam sealer on the back and bondo on the outside.

Here are a couple of flangers:

http://www.eastwoodco.com/shopping/product/detailmain.jsp?itemID=1587&itemType=PRODUCT&iMainCat=504&iSubCat=510&iProductID=1587

http://www.eastwoodco.com/shopping/product/detailmain.jsp?itemID=1658&itemType=PRODUCT&iMainCat=504&iSubCat=510&iProductID=1658

Chuck

Link to comment
Share on other sites

like cbuczesk says, at the seam you can use a flange tool to step the panel so that when one is laying on the other, they are flush. A lot of patch panels come with a stepped flange in them anyhow. Also, if ya do it just right, the welding slightly shrinks the seam area, sucking it in ever so slightly. Trim and fit the panels carefully, the better they fit, the better the patch will turn out.

keep the questions coming

Link to comment
Share on other sites

Guest brisk1961

I was asking about rear valiance panels earlier since the only one I could find was from MSA and it was real pricey ($250). I did my best to pull it out and fill in the defect. Just going to fill the remainder with body putty and sand it out.

ef8cb69c.jpg

Link to comment
Share on other sites

Guest Reese280

Hello

This is my very first Z and my oldest brother has had over 100 different Z and he can help me as well but if any one could give me some pointers on what certain parts do how they would help me and some good places where i can get some parts near Columbus, Ohio and where there are some go paint shops.

 

Thank

Link to comment
Share on other sites

Alrighty, I've got one for you guys. I need to cut out and patch my driver's rocker panel and I'm planning on coating everything inside with por15 but after I weld wont that burn off some of the paint and leave bare metal inside? Should I be as worried about that as I am? Most other places I'll still be able to get to the backside. I just dont want to get a couple of years down the road and have to deal with rust again.

Link to comment
Share on other sites

Guest SouthGaZX

thats a good question.. lol never thought of that.. but it would seem that it would make the paint flake off inside... i also have one more question.

a z i bought a couple months ago has a rust spot on the roof.. thats a small hole..its ate all the way through the metal.. and i know water has ran all down in it... how hard will this be to repair? i know its not going to be pretty.. and im going to have to probably remove alot of metal on the underside of the roof.. is it even worth it?

Link to comment
Share on other sites

Alrighty, I've got one for you guys. I need to cut out and patch my driver's rocker panel and I'm planning on coating everything inside with por15 but after I weld wont that burn off some of the paint and leave bare metal inside? Should I be as worried about that as I am? Most other places I'll still be able to get to the backside. I just dont want to get a couple of years down the road and have to deal with rust again.

That's what these are for: http://www.eastwoodco.com/jump.jsp?itemID=10966&itemType=PRODUCT

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...