Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [welding]

Process for fusing metals.

34 questions
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What is fish plating a frame?

When building a frame I've heard people refer to adding a fish plate. What does fish plating a frame do and what exactly is it?
Hᴇʀʙɪᴇ
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4 answers

Does Tig welding a frame add more strength where fish plating isn't required?

Usually when someone builds a custom frame they are typically Mig welded and fish plated but if a frame is Tig welded does that generate better penetration when welding pieces together so you don't have to fish plate? My understanding is limited in…
Hᴇʀʙɪᴇ
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5 answers

How to fix broken exhaust pipe?

I was driving down the highway and I heard a bang, a beep, and then constant scraping. I pulled to the side of a road under a bridge and looked under my car, to see this: From what I can understand, the exhaust pipe snapped right at the location…
Forest Kunecke
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Damaged tailgate strut attachment point in WRX

I have a 2003 Subaru WRX (in the USA) and the left tailgate strut attachment point is badly damaged. I have asked a few body shops and quotes are typically in the $500+ range to repair the damage by welding. I can live with it, but was hoping to…
copper.hat
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What kind of amperage and sticks needed to weld a nut to a stripped cap/bolt?

I was trying to get a cam gear cap/bolt thing off a 2000 Volvo S80 2.9l and stripped the torx pattern out of a bolt. I'd guess it's around 1-1/2" in diameter, and this is what it looks like: I have tried other things like using JB Weld to hold a…
user43704
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Is there a way to section a frame without fish plating?

When building a frame is there a way to join the sections together without having to fish plate?
Hᴇʀʙɪᴇ
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How to shorten a driveshaft?

How can I shorten a driveshaft? Are there any warnings before proceeding? What tools are required, and optimal? Is there a "required" way to measure correctly? How can I keep the metal square? Is there a preferred area to section out of the…
Jonathan Musso
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JB Welding a Stripped Oil Pan

I have a Honda Civic with a stripped aluminum oil pan. Right now the bolt is holding in place alright with a very slow drip, but with the next oil change I will need to make a repair. I would like to avoid replacing the whole pan due the costs, and…
FreakyDan
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Welding sheetmetal

I'm looking at purchasing a 78 Chevrolet truck which has some modest rust which would most likely need to be taken care of via replacement sheetmetal and welding. I'm a decent welder (a little better than a hack). I understand how to strike the arc,…
Pᴀᴜʟsᴛᴇʀ2
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2 answers

Holes in exhaust manifold

On a diesel tractor, the exhaust manifold has developed two holes, possibly from thin castings, and possibly from rust. The manifold is cast iron, and I would like to patch it. A local farmer tried high temperature epoxy. That lasted until the…
mongo
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Integrity of plastic welding for car rear bumper

I have a 2010 Toyota Camry and I was involved in a minor bumper crash last week where the one of the tab that holds the bumper to the car broke off. I went to two body shops and body shop A told me they could fix it with plastic welding and body…
Chairman Meow
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Electric welding on modern car, what to disconnect?

Presently I have a BMW E60 530d which failed it's annual inspection due to corrosion around the rear jacking point (which is near the rear subframe mounting point). Typically ahead of welding (MIG or ARC) I would disconnect the battery to prevent…
Steve Matthews
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Welding on car - damage to ECU, battery, alternator?

I had to weld nuts to the outside of rounded-out allen type bolts when removing 15-year-old rear brake calipers and carriers this weekend. As I was laying under the car welding (probably running about 55 amps, MIG) with the my ground somewhere on…
Tedwin
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Is it possible to weld a broken 3/8 extension bar and reuse it?

I broke a 3/8 extension bar while I was undoing a bolt. It broke into 2 pieces (2 blue lines) from the red line I drew in the following picture: Is it possible to weld the 2 pieces together? Will it be strong enough for average use (below 50 nm…
LFY MP7.3
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Removing a welded nut

There's a nut welded on my countershaft and I don't like that. How do I remove it while minimizing the chance of damage to the countershaft's threads, as damage would necessitate: a. welding a nut on b. splitting the cases
andrey
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