Spent a day welding exhaust - Pics

[bszopi]

http://www.millerwelds.com/products/tig/diversion_165/

^ Seems like a nice one to me...

[pocket-rocket]

I've got one of those "Chicago Electric" "things". 110, 90 amp flux core. My biggest gripe is it's either 90 amp or 60 amp since it only has a switch for amperage vs a dial. I paid less than $90 brand new from the store (big sale + 20% off coupon) and mainly bought it to learn on so I didn't screw something pricey up. Later down the road I plan on getting a Hobard Handler 140.

[Schmieder]

Ok statement was corrected, but yes that 220 is needed because we weld 1/8 and thicker metal for the car, including roll cage and such.

But I still would have sprung for the extra money to just get a gas shielded 110 over the flux core, if you think the 220 is more power than you'll ever need.

I was able to weld 3/16" steel plate for the merging of cross-over to flange quite well with 110v. I did have all settings up as high as they could go but puddle welding proved sufficient.

Ehh, if I need a better welder, I'll spring for it down the road. But the cheaper welder now allowed for more turbo parts, like the $100 turbo blanket.

I would like a gas shielding though. It is much nicer indeed.

[3400-95-Modified]

Ok statement was corrected, but yes that 220 is needed because we weld 1/8 and thicker metal for the car, including roll cage and such.

But I still would have sprung for the extra money to just get a gas shielded 110 over the flux core, if you think the 220 is more power than you'll ever need.

[Schmieder]

I am no welder, but I know that is INCorrect,
that is why they have "dials" and "settings" lol

You are correct, a 220v can weld 16 gauge. What I meant was it is too much $$$ for me to weld 16 ga. even 14 ga.

After all the expenses for the turbo build, I'de rather just get a $170 110v Mig welder from E-Bay which can weld up to 3/16". It did the job for less

All I need it for is 14ga and thin steel for body work. I do plan on making a custom scoop for the hood. I found some screening material for oven vents look really nice for a hood scoop.

Though, a 220 would be nice.

[Weatheralls Auto]

.............
And 220v is nice, but that is too much for 16 gauge pipe. It would burn through in a heart beat.........

I am no welder, but I know that is INCorrect,
that is why they have "dials" and "settings" lol

[Schmieder]

You's guys gotta get some gas sheilding welders, and some 220v ones They have much better lines than those 110 flux core jobbers.






I would have to say this is my worst exhaust work on the race car.

Yes, they ARE nice welds. If I had to weld more then exhaust, I would invest. But my engine bay exhaust is heat wrapped and ironically, the Mig splatter actually helped secure the heat wrap from shifting around when wrapping it up.

[Schmieder]

Besides looking ugly, a Flux Core Mig can weld very strong joints if you know what your doing.

When I was dialing in the settings I got a piece that was a 'good' weld. I welded 2 4' pipes together and set it up on blocks. I stood on the pipe and it held well.

Trick with mig, and I guess any weld, is to get the wire to blend nice with the product. In a way, they fuse together to become one. But at that heat, I had to puddle weld the 16 gauge pipe. But, if you puddle weld just right applying the next hit before the last one cools too much, it works out very well.

Some say Mig welds are hard to make air tight. They just need more practice.

If I wanted pretty welds, I could always grind em down.

And 220v is nice, but that is too much for 16 gauge pipe. It would burn through in a heart beat.

And, the closer the gun is held to the product being welded, the better the flux core can create a shield of its own.

But I'm sure you guys know this. I mainly wrote this up for people who need to know.

[robertisaar]

<--- 110V arc welder... looks like hell, but they almost always end up being strong.

[Weatheralls Auto]

I have a 220 Gas welder and my welds still look like crap, But thats just cuz I can't weld worth crap lol.

[3400-95-Modified]

You's guys gotta get some gas sheilding welders, and some 220v ones They have much better lines than those 110 flux core jobbers.






I would have to say this is my worst exhaust work on the race car.

[pocket-rocket]

Most 2 strokes also use the muffler as an expansion chamber to make a supercharger like effect by using reversion.

http://en.wikipedia.org/wiki/Expansion_chamber

I've still got mine from high school. 94 Yamaha Jog.

[Schmieder]

Yeah 2 stroke doesn't really use valves the piston is sort of the valve. Wondered if it could be damaged running manifold less though.

Damaged, not sure. It was stolen over night and I found out a bunch of kids had brought a ramp to a lake and one of them jumped the bike into the lake.

But at 16 almost 17, it was becoming lame to ride a beat up ghettofied moped, no matter how much starting fluid I could spray into it, lol. So I said F**K it.

[IsaacHayes]

Yeah 2 stroke doesn't really use valves the piston is sort of the valve. Wondered if it could be damaged running manifold less though.

[Schmieder]

Yeah the orange care isn't a DD so no worries there. It's a toy, so it will be taken out on sunny weekends for some excitement. Race car thrills! Loud and nasty!

Did the exhaust valve ever burn up on that moped with no manifold on there? Not sure how 2-cycle "valves" take to that kind of thing but 4 stroke doesn't like that.

It didn't have valves, just openings. The intake was up higher in the chamber then the exhaust was. Strange how it worked but it worked. Had to ad special oil to the gas. And I had put new cylinder rings on so it did last a while punishing it in such a way. It was a PITA, the rings, but for one cylinder on a rinky dink moped engine wasn't too bad. Definately not like a v6.

Orange car, I hear that. Some day down the road I plan to build my ultimate pride and joy. Something I want to build from the ground up. A long detailed project. Fitting my own bearings, forged pistons, stronger crank, double roller timing chain, stronger rods, nice cam, ect...

Oh and 30-40 psi boost

And that car will be loud. Like you said, a sunny day race car.