The 99 twins use journal bearings so without oil there is lateral shaft play which could allow the compressor wheel to touch the abraded seal. Both my primary and secondary turn freely.
Dan
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93 RX7 BB (Race Car)
93 RX7 SSM (Soon to be IBM and a daily driver)
05 Silverado Z71
08 Mini Cooper
80 LS RX7 (for sale)
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