turbo fabrication

[Cbass]

Originally Posted by GTmike400

Usually the penetration wont matter is much when your just doing a fillet weld (and its not for structural use), but still, welding two different thicknesses is the biggest pain in the ass. Especially welding .063 to .25, thats tricky ass hell.

Penetration really matters when you're welding stainless that is going to be heated up red hot, and then cool down to ambient air temperature every time you drive the car.

You want good penetration with a slightly convex weld profile, it gives it a little more reinforcement, and a little bit more room to stretch as it expainds.

Integra06, sounds like you've got a good way in to a good trade, and a good plan. If you can that much practical experience, you should have no problems getting apprenticed.

[mike@af]

Originally Posted by Cbass

Penetration really matters when you're welding stainless that is going to be heated up red hot, and then cool down to ambient air temperature every time you drive the car.

You want good penetration with a slightly convex weld profile, it gives it a little more reinforcement, and a little bit more room to stretch as it expainds.

Integra06, sounds like you've got a good way in to a good trade, and a good plan. If you can that much practical experience, you should have no problems getting apprenticed.

When welding 18-8 you can get great penetration by turning down the IPM of the wire, and creating more of a fission process for MIG. I forgot turbo shit got that hot...oops. We dont use many turbos on hot rods.

[Cbass]

Originally Posted by GTmike400

When welding 18-8 you can get great penetration by turning down the IPM of the wire, and creating more of a fission process for MIG. I forgot turbo shit got that hot...oops. We dont use many turbos on hot rods.

Actually, turning up your wire speed tightens the arc gap to a point, and makes for a slightly hotter weld with deeper penetration. Turning down your wire speed too much can lead to big problems.

What are you welding that requires 18 to 8 gauge? Reinforcement for unibodies?

[mike@af]

Originally Posted by Cbass

What are you welding that requires 18 to 8 gauge? Reinforcement for unibodies?

18-8 is another name for stainless.

[Cbass]

Originally Posted by GTmike400

18-8 is another name for stainless.

That would explain why I didn't recognize the term I don't get to weld much stainless, mostly all mild steel fab. What I have done is all 1/2, and that was with stick.

[mike@af]

Originally Posted by Cbass

That would explain why I didn't recognize the term I don't get to weld much stainless, mostly all mild steel fab. What I have done is all 1/2, and that was with stick.

I dont do much 18-8 stuff either. I usually weld 4130 (20gage up), and mild nickel steels (22gage up). Most of the stuff I weld is usually done with TIG. I use MIG for tacking sometimes.

[Cbass]

TIG is something I want to get into, so far all of my experience is with stick and wire... I'm considering picking up a used DC machine and just getting a TIG torch and a gas cylinder, so I can get my feet wet with TIG welding.

[CBFryman]

Fabricating a turbo system???? well as far as plumbing goes its only moderatly hard...that is hard is fabrication a manifold for a turbo...i would suggest finding a turbo kit that is made for your car...buy just the manifold...then get a turbo off of another car...have the turbo sent off to have sealed bearings and lal that good stuff replaced...then fab up your plumbing....making sure that for ever 100HP or 10lbs of boost to retard your timing by 2-3 degress or bump your octane input 3-4 points to prevent detonation...or both to be completely safe...and for massive ammounts of boost replacing the bottom end in your engine and droping your compression ration a point or so will make your engin live longer happier....