M400 Turbos - Different OEM Varieties???

[peterguk]

OK, as i understand it, M400 turbos are Garrett T28s.

So since i want to use OEM spec. gaskets, i order turbine gaskets for Sunny GTiR.

Manifold / turbine fits perfectly.

Turbine / downpipe - 4 studs are fine - one stud is about 2mm off centre.

I have just bought a pair of Roush decats. Again, one stud does not match my turbos...

Any ideas???????

[ThatPhilBrettGuy]

This is very odd. I'll check with Roush in the morning but I don't think there's anything special about them. Did you get the cats with your exhaust, and do they fit?

[peterguk]

Well after a chat with Phil (thanks Phil) it seems this is a complete mystery..

I have no reason to believe i have anything other than a 12/05 M400 engine. Stock, no mods, came with OEM cats/downpipes.

Phil's Roush decats won't fit my T28 turbine outlets.

Nissan Sunny GTiR T28 turbine outlet gaskets won't fit my T28s either.

Confused...

Let's see if Trevor can shed any light. Owen Developments and AET Turbos couldn't.