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with the same size exhaust turbine housing.
Thats what we are hoping anyway (per the newer design), no one (to my knowledge) has yet dynoed with the .64 A/R exhaust turbine housing so there is no proof yet.
Also my understanding is the GT2530 is a gt28r with HKS cast compressor housing.
Quoting chip here
HKS GT2530 uses an older style 63 trim T28 compressor wheel.
Our turbos [GT28RS/GT675-R] have the newer 62 trim GT30 compressor wheel.
Max flow is roughly the same, but GT30 wheel has better efficiency.
HKS has their own .6 A/R T04B housing cast to fit 300zx application, we use an off the shelf Garrett .6 A/R T04B housing, but modify it to work in 300zx application.
Turbine wheels and housings are identical.
See here for more complete list of turbo sizes (including 2530).
La-Z-Link And, for whats its worth I have already ordered my (fully honed) GT675-R from Chip. Hoping for decent lag with the rest of the mods.
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