Bodywork, Paint, Interior, Trim, & Wiring

discussions about bodywork, paint, interiors, trim, audio, electrical components, wiring, etc.

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Brownwood
Keith Montague

(176 posts)

Registered:
01/25/2014 08:08PM

Main British Car:


Welding MGB Side Trim holes and marker Light Holes
Posted by: Brownwood
Date: May 13, 2014 10:23AM

As I ponder the installation of my Huffaker flares on my 80 B V8 conversion, I want to remove the stainless side trim and the side marker lights (A necessity really). I find welding up all those holes intimidating. What I am wondering is if it is even possible to do this with my simple 2 speed wire welder, or will I just blow big holes in my sheetmetal?


roverman
Art Gertz
Winchester, CA.
(3035 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: roverman
Date: May 13, 2014 11:44AM

When possible, I like to use an aluminum block, as back-up, to fill holes in steel. The aluminum works geat as a heat sink, reducing blow-outs, and mostly, the wire/steel doesn't stick to it. Good Luck, roverman.


mgb260
Jim Nichols
Sequim,WA
(2049 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: mgb260
Date: May 13, 2014 02:28PM

Keith, rosette(a little swirl) weld for screw and trim holes. round patch tacked in for side marker holes. Just keep tacking alternately each side until you are all the way around. Grind and fill.



Edited 1 time(s). Last edit at 05/13/2014 03:58PM by mgb260.


Brownwood
Keith Montague

(176 posts)

Registered:
01/25/2014 08:08PM

Main British Car:


Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: Brownwood
Date: May 13, 2014 03:36PM

Thanks guys, with trepidation I move forward. I will probably try it on a door that is being replaced to learn.


rficalora
Rob Ficalora
Willis, TX
(2676 posts)

Registered:
10/24/2007 02:46PM

Main British Car:
'76 MGB w/CB front, Sebring rear, early metal dash Ford 302

authors avatar
Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: rficalora
Date: May 14, 2014 01:19AM

Keith - welding with a MIG isn't too difficult to learn, but if you're worried about blowing holes through the sheet metal, do practice on some scrap of the same/similar gauge before welding on your car.

I've never heard of backing up the weld with Aluminum, but copper is commonly used. The weld will not stick to copper so you can hold it to the back side of the hold & weld a rosette very easily. Eastwood sells copper for this purpose, but I found flattening out some soft copper pipe from the local big box hardware store works just as well. YouTube is a great source to learn by watching.

I will say a welder that lets you use shielding gas (Argon/CO2 mix for steel like the car body) makes it 1000 times easier than welding with flux core wire. There's way less splatter making it easier to see what you're welding.


roverman
Art Gertz
Winchester, CA.
(3035 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: roverman
Date: May 14, 2014 11:05AM

AIRC, argon burns a lil' cooler than CO2, so is better for sheet metal. roverman.


74ls1tr6
Calvin Grannis
Elk Grove,CA
(1150 posts)

Registered:
11/10/2007 10:05AM

Main British Car:
74 TR6 / 71 MGB GT TR6/Ls1 71 MGB GT/Ls1

authors avatar
Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: 74ls1tr6
Date: May 14, 2014 05:42PM

Also use .023 (smallest your machine can handle) wire if you can. Try not to point the Mig straight at you work. Lay your Mig wire feed off to the side( like at a 45 degrees). I have found you don't blow through your work as fast. Spot weld around your work until it's all filled in, so you won't warp the metal. Do not over heat or it will warp.



Brownwood
Keith Montague

(176 posts)

Registered:
01/25/2014 08:08PM

Main British Car:


Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: Brownwood
Date: May 15, 2014 10:57AM

Thanks for all the info! So back to my original question. Is this possible with my simple 2 power, hi and low, wire welder if i use small diameter wire?

This is what I have: [www.northerntool.com]


MGBV8
Carl Floyd
Kingsport, TN
(3922 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: MGBV8
Date: May 15, 2014 11:27AM

Try it on some scrap. I don't think it will do the job very well, if at all. That welder advertises down to 18 gauge metal. I believe your fenders are thinner at 20 gauge.


roverman
Art Gertz
Winchester, CA.
(3035 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: roverman
Date: May 15, 2014 11:53AM

Best chance is likely: "a" use copper/aluminum back-up, and "b" lowest amperage, with fastest allowable wire speed,(just short of pushing-back). Good Luck, roverman.


Moderator
Curtis Jacobson
Portland Oregon
(4466 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: Moderator
Date: May 15, 2014 12:33PM

If in doubt, this would be a relatively cheap little job to outsource. It shouldn't take anyone an hour, if you do the prep/cleaning/trim removal work in advance. I didn't have my MIG yet when I filled those holes on my car, so I went to my friend's house and we used his.


Brownwood
Keith Montague

(176 posts)

Registered:
01/25/2014 08:08PM

Main British Car:


Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: Brownwood
Date: May 15, 2014 02:21PM

Thanks all! As much as I want a MIG, this project has taken all of my fun money. Outsourcing might be the way to go


Preform Resources
Dave Craddock
Redford,Michigan
(359 posts)

Registered:
12/20/2008 05:46PM

Main British Car:
72 MGB V6 3.4

Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: Preform Resources
Date: May 16, 2014 02:55PM

Kieth, just make sure you get a shop that knows what they are doing, not some jiffy popper that will cause more problems.
Dave


pspeaks
Paul Speaks
Dallas, Texas
(698 posts)

Registered:
07/20/2009 06:40PM

Main British Car:
1972 MGB-GT 1979 Ford 302

authors avatar
Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: pspeaks
Date: May 21, 2014 01:23AM

Keith, I think Curtis and Dave have the right idea about having it professionally done, without a lot of practice I wouldn't be comfortable doing it either and my eye site isn't all that good anymore anyway, but if you decide to try it, I have a 115 volt MIG machine with a low 22 ga. setting that might work for you and it will use .023" wire. I haven't used it in a while because I have a 220 volt welder, that would be way too big for welding door holes. The small welder just sets in the corner; I used it on my firewall. I'd be happy to drop it by your house one day this week. Like Carl said, practice, practice, practice, don't do it until you're sure.


Paul



Edited 2 time(s). Last edit at 05/21/2014 01:37AM by pspeaks.


Preform Resources
Dave Craddock
Redford,Michigan
(359 posts)

Registered:
12/20/2008 05:46PM

Main British Car:
72 MGB V6 3.4

Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: Preform Resources
Date: May 21, 2014 10:13AM

I liked Robs idea of mashing the end of a copper tube flat and using it to back up the holes,
it could be used in in confined areas too.
Dave



pspeaks
Paul Speaks
Dallas, Texas
(698 posts)

Registered:
07/20/2009 06:40PM

Main British Car:
1972 MGB-GT 1979 Ford 302

authors avatar
Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: pspeaks
Date: May 21, 2014 01:25PM

It is a good idea.


Paul


Brownwood
Keith Montague

(176 posts)

Registered:
01/25/2014 08:08PM

Main British Car:


Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: Brownwood
Date: May 21, 2014 03:49PM

Hey Paul that would be great! I could meet you 1/2 way or something. Lunchtime Thursday or Friday? Also, I'm not in a big hurry if that doesn't work. Kids and grand kids coming in this weekend so my next couple of weeks are going to be crazy busy. PLus, my trepidation has prevented me from removing the stainless trim so far! :)

I have a bashed up door I am going to practice on 1st, to see if I can do it.....


pspeaks
Paul Speaks
Dallas, Texas
(698 posts)

Registered:
07/20/2009 06:40PM

Main British Car:
1972 MGB-GT 1979 Ford 302

authors avatar
Re: Welding MGB Side Trim holes and marker Light Holes
Posted by: pspeaks
Date: May 21, 2014 08:28PM

Keith, Friday would be good for me, I'll PM you my cell number. I'll probably be at the T-Bucket Factory in McKinney anyway so no need in meeting halfway.


Paul


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