S400 Choices
12-26-2010, 02:19 PM
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S400 Choices Looking at fitting a T4 based S400 to my 355ci engine. Currently have a T51R Garrett (76mm comp and 81mm ta45 turbine) on 17psi I have ran a 9.06 at 150mph. Now trying to chase a extra 100hp with a reaction in back pressure and more efficient compressor.
I have tried on a s400 on for fit and it's good. How does for example a 75mm comp wheel with race cover compare to a 80mm with STD cover?
Also I'm undecided between a 87mm or 92mm turbine wheel? What will effect back pressure more the turbine wheel size or the housing a/r ?
I have tried on a s400 on for fit and it's good. How does for example a 75mm comp wheel with race cover compare to a 80mm with STD cover?
Also I'm undecided between a 87mm or 92mm turbine wheel? What will effect back pressure more the turbine wheel size or the housing a/r ?
