Advice on starting a GT2056s Project

[cwspellowe]

dieselavante.it buddy

The elbow fitted to it is too restrictive, these things make a crazy amount of flow and will suffer massively without a big ol' elbow and downpipe. I run a 2.5" elbow on mine.

IIRC the Iveco ones use the standard 4 bolt rectangular Garrett flange at the turbine inlet, and the outlet is either a rare 4-bolt shape or more common 5-bolt shape, again the 5-bolt one is a pretty standard Garrett flange. You can buy ready cut flanges and gaskets for them, may be an option rather than cutting up some steel plate. Have a shop around and see what you can find.

The GT2056 i have has a triangular inlet to the hotside which meant all I needed to do was drill and tap new holes in the XUD mani. The four bolt patten you WILL need an adapter plate, bear in mind this will push the turbo closer to the bulkhead so consider your plate thickness wisely. They're not HUGE coldsides but big enough to cause clearance issues if you don't think it through.

TO be honest though, great choice of turbo. You'll definitely need a bigger fuel pump plunger to make the most of it though. And FWIW, run it at 24psi max and KEEP THE WASTEGATE. They have the ability to easily overspeed without the wastegate, something I discovered very quickly. On a 9mm pump the turbo will hit 35psi and beyond (albeit briefly before catastrophic failure), with a wastegate though at 22psi my 9mm is blowing clean on boost.

Any questions feel free to ask away. I feel i've become a bit of an expert on this particular variant now