Best filler to weld turbine housing to stock exhaust manifold? PT styles..

[Rrider]

I've heard use nickel, stainless, regular er702.. anybody tried this? What did you use?

[shadow88]

I've heard to use nickel filler rod for cast iron.

[turbovanman²]

PM Shayne.

[RoadWarrior222]

What I read the other day was, something that's close to halfway between the 2 things you wanna join.

[shayne]

degrease and preheat till your spit sizzles on the pieces, then use a high quality high nickel content rod, in past ive knocked the flux off and tig welded with said rod.
harris makes a really good rod, i dont remember the part number but it's dubbed "super missle rod" ive had the best results with that. barring that standard mild steel mig wire and pre and post heat.

[turbovanman²]

Constant heat required or get it hot, weld, get back to temp, weld?

[shayne]

welding ninja beat you to it.. lol

[turbovanman²]

welding ninja beat you to it.. lol

Huh? I am asking a question, now pick up your god damn wheels, :p

[shayne]

ohh, arent i a jerk, preheat then weld while still hot, then apply heat in extending intervals post welding, each time post heating a little less so as to let the casting cool and rearrange grain structure enough to resist cracking once cooled.

[wallace]

I've used 308 filler rod on a garrett turbine housing to weld 304 SS to it. What kind of material are you welding to the housing?

[johnl]

I've been told to tack it with nickel rod, then iron powder/plasma fill/weld it, oven stabilize over night, then bring it down slowly the next day.

[Rrider]

What kind of material are you welding to the housing?
I'm not sure what kind of metal the casting is. Its just a regular looking garrett turbine housing and a stock manny. I have some nickel arc sticks. I'll scrape them down and try with that.

[wallace]

I mean what kind of material are you welding to the housing? The housing is cast steel and is of high quality if its a stock Garrett housing. I modified a stock swingvalve by welding on a 3" piece of mandrel bent tubing...on the advice from someone on this board (I don't recall who it was long time ago) I used a mig welder and plain old mild steel wire. It welded up just fine. That piece has been on my dd for over 5 years and buttload of miles. No problems whatsoever. There are pics of that housing on this site somewhere someone posted a thread asking about modified swingvalves and I posted a pic in that thread.