The problem is welding through the double walled portion of this, right? How did that project turn out anyway?
Even at that price, you'd be better off just buying upgraded twins.Thanks for fixing my picture.
He said it ran fine and used it for over a year. It was a true garage build using left over turbo from another project etc. I think he said he invested under 2k into the whole thing. More like 1600 IIRC.
I also wonder about welding the double wall. My guess is you weld right after it.
We've cut the manifolds off from the housing right below the weld. This means you have a layer of solid turbine housing intact to weld too, meaning the double wall is sealed up. Not an issue.
Is there a reason in your opinion we don't see more backyard builds using this?