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Best I can do on A/R below. [ http://www.twinturbo.net/net/viewmsg.aspx?forum=main&msg_id=638144 ] You might want to look at a recent post on turbos and follow the links at the bottom. [ http://www.twinturbo.net/net/viewmsg.aspx?forum=main&msg_id=639830 ] A copy of some info pointed to about the Z stock turbos. Note the differnece in the auto and 5 speed. None except A/R. >>>>>>>
Most Garrett turbos are actually "hybrids" of one sort or another. For example, the TB22 turbos that come stock on our Z's are made of the
following components: A T2 sized exhaust housing with an exhaust hole A/R of .63 (.53 for the auto) and a 57 trim exhaust fan (1.39" wide at the top, 1.85" wide
at the bottom). A T2 sized compressor housing with an intake hole A/R of .48, and a 60 trim compressor fan (1.46 top, 1.89 bottom). Zya,
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