I have a GT3071R with a T28 rear housing, chose this turbo as it is the biggest that I can go without having to change my whole setup which currently runs a GT2860RS.
I have an issue in that the rear exhaust housing outlet is bigger than the normal T28 series and I cannot find a gasket to suit. I even went to the Garret dealer in Adelaide who said that there isnt one and that when he modifies T28's like this he tapers the housing out so that it matches up with the gasket mating surface. He also said that it wouldn't be an issue and might be worth around 5kw or so due to causing turbulence, but I would really like to get this right the first time.
the dump flange shouldnt be an issue as I can get that machined out as the piping is larger behind it, possibly I can run with no gasket?
note the larger machined out area around the wheel (left turbo)-
view looking from the inside of the housing, the divider is almost in the right spot but I might get it resized to fill the whole gap-
gasket itself-
plenty of room to machine the flange back-
another view of the divider-
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