roastin240

iTrader: (13)

Okay, as Denmah and others have shown, the wastegate on the turbine housing controls boost great. This discussion is for the WELDING of the tube/pipe/flange to the CAST IRON turbine housing.

1. Use 16 gauge tube to fit WG or thicker schedule 10 or 40 pipe?

2. Stainless or mild steel for this material?

3. What filler rod to use when TIG welding it?

4. Processes required (i.e. pre-heating, slow cooling) and how you performed them.

5. Results

I have a pretty solid plan of attack, but want to hear others thoughts/experience, etc.

shortstroke

Slap it on there with whatever you got. My buddy did mine in like 3 minutes. The less you care the better it will hold. Ss flange to some scrap Ss pipe straight to housing. Did no preheating or any of that proper prep work.


Only reason we used the pipe was because the flange sat to close to get a clamp on it. Tried it I it tonight. So far so good.

Robby05

That's awesome.

wild1100

iTrader: (3)

Yellow bullet has a great thread about welding wastegate on housing

NBM-LS1

iTrader: (7)

If its cast steel you shouldn't have to do any controlled cooling. I would preheat just because of the difference in mass. Er70s2 filler should do ok.

Boosted51

Have all your materials all ready and holes cut before beginning deburred and ready for welding. Pre heat the cast housing to 220-300 degrees with oxy torch or whatever you have around use 309 filler. I use 1/16th. Use around 120-145amps depending on cast thickness. I usually wrap mine in a flame blanket to slow cool so nothing cracks. Should be good to go

Old Geezer

iTrader: (3)

" The less you care the better it will hold"....
That's good advice.