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Subject Well...
     
Posted by MyBlueZ on July 15, 2024 at 4:53 PM
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In Reply To May I ask where you got the 1mm larger comp wheel size?? posted by itsa300zx on July 15, 2024 at 04:29 PM
     
Message It was on one of the few dozen random web sites that I was reading when researching all of this. But I was wrong - and went straight to the source just now - from Garrett.

GT2554R = 42mm inducer and 54mm exducer
https://www.garrettmotion.com/racing-and-performance/performance-catalog/turbo/gt2554r/

GT2560R = 46mm inducer and 60mm exducer
https://www.garrettmotion.com/racing-and-performance/performance-catalog/turbo/gt2560r/

So 4mm larger inducer and 6mm larger on the exducer. That's about 1/4" which I guess is a lot on a turbo wheel?


     
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