well im going external WG after have problems trying to hold 20 psi on the internal one.
well i have to weld the flapper door shut, do you guys pull the turbo apart(remove the hot side from the cold,, everyone know how fun the t3's are to pull apart, 6 bitch bolts) or just weld it with the turbo still together, anyone ever have problems after welding it shut,,, like worping,ect,ect.
thanks

 

I doubt you're gonna "worp" an exhaust housing by welding the flapper shut. I'd just weld it while it's together as long as you're retaining the flapper door. Shove a wad of aluminum foil into the turbine hole to keep slag outta there.

 

any certain kind of metal i should use to make up a block off plate, any tips on welding to cast?
thanks

 

what about throwing a frost plug in there?

 

just weld it...

i think the cast was easier to weld then metal is...

 

yea just weld it