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Saku Saku is offline
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Car: 335i, E30 S38t, 330d
Default N63 550i 2011 stock turbo wheel sizes? - 03-12-2020, 04:22 AM

Has anyone measured which wheels are there? They are 2256, so 22 series turbine and center section and 56mm (larger dia) compressor wheel. But other diameters vary depending to which usage they have been designed. Usually 56 series seems to have inlet dia between around 39-43mm. That diameter roughly tells us the air volume they can supply.

Found these on some page, can anyone confirm? :
Compressor 41.6/56.03mm 5+5 blades
Turbine 44.12/49.96mm 9 blades
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