Does this look funny to anyone? T28 fins - Miata Turbo Forum - Boost cars, acquire cats.

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Old 11-13-2012, 12:10 PM   #1
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Default Does this look funny to anyone? T28 fins

About to buy a T28 with 50K miles. Does this look funny to anyone else?

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Old 11-13-2012, 12:21 PM   #2
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Where are your turbine speeds supposed to be for target boost at redline accodring to compressor flow map?
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Old 11-13-2012, 12:22 PM   #3
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that's not the correct housing for that wheel.

the edges of the blades should be right up against the housing:

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Old 11-13-2012, 12:24 PM   #4
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YA! Looks like the wheel is missing some metal to me! Here is a picture of a new one. See how the vanes are really close to the housing(which is why shaft play is Baaaaad mk).

Id pass on that turbo personally unless you can get it for cheap and rebuild it.

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Old 11-13-2012, 12:28 PM   #5
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Thats what I was thinking (that's not the correct housing for that wheel). I couldn't find a quailty pictre of a T28BB unit where the fins are clear enough to see the depth. It's a decent price, but don't want to have to rebuild it.
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Old 11-17-2012, 11:45 AM   #6
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I'm pretty sure that's how the T28's looked from the Nissan era. Here is a pic of a T28 from a R32:
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