Welding partial bottom piece at the rear |
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Welding partial bottom piece at the rear |
Leon.paradise |
May 16 2021, 04:10 PM
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#1
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Newbie Group: Members Posts: 10 Joined: 30-December 19 From: Munich Member No.: 23,780 Region Association: None |
Hello,
I would like to replace and weld in part of the floor panel at the rear of my 914. I have a question to which I have not found an answer on the Internet. When I weld in the floor pan I have to completely remove the 2 plastic fuel lines (flow and return) from the tunnel or I can leave them in when welding the floor pan. I am specifically concerned with the risk of fire. The heat when welding sheet metal can cause the fuel lines to melt or the heat to make the lines so hot that what can happen. The engine and tank are still installed in the vehicle as normal. What about the engine and tank, can they be built in or do they have to be removed before I start welding. The carpet, seats, seat back wall will of course be removed by me beforehand. Pictures of the area Greetings Leon |
Leon.paradise |
May 17 2021, 02:01 PM
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#2
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Newbie Group: Members Posts: 10 Joined: 30-December 19 From: Munich Member No.: 23,780 Region Association: None |
Hello,
What does it look like if I want to weld with a cored wire welder, there is less heat and can this process be used to weld the sheets? Kind regards Leon |
Superhawk996 |
May 17 2021, 04:01 PM
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#3
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914 Guru Group: Members Posts: 5,819 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
What does it look like if I want to weld with a cored wire welder, there is less heat and can this process be used to weld the sheets? Flux core MIG would be my absoute last resort. If your welder will support it, you want to use a shielding gas. If welder won't support anyting other than flux core, I'd seriously consider selling the machine you have a get a MIG that will support shielding gas. Flux core disadvantages: Mess. More spatter, more weld build up, harder to metal finish. Heat -- MIG is a good process but flux core is notoriously hard to control on automotive sheet metal. Flux core tends to weld hotter than gas. Be prepared to back the panels with copper to avoid easy burn though. There are some really affortable, basic MIG units that support gas. Folks on this site have done some really amazing work with very basic machines. NOTE: Be super careful not to cut the control cable tubes that are inside the tunnel. There are areas where the tubes are only 2-3 mm away from the floor pan. I'd pull the engine. The rear edge of the floor pan to rear bulkhead is edge welded to seal out water. You're going to have a hard time doing that seam and the puddle welds along it with an engine in your way. |
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