Quote:
Originally Posted by Chuck33079
Spool will depend on which turbos you're comparing. 16g vs. a GT28 with the big housing or larger? MHI all the way. 20g vs. the GT28 with the .63 housing? GT28. Ball bearing turbos like the Garretts will spool faster than a similarly sized journal bearing turbo like the MHIs.
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Ball bearing doesn't have a huge affect on initial spool. Transient response and turbo life is where BB shines.
Spool has more to do with turbine housing and wheel size. Have you seen how tiny MHI turbine housings are for 16g's and 20g's?