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      04-22-2013, 11:37 AM   #4
Red Bread
Brigadier General
United_States
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Drives: My wife's car
Join Date: Oct 2008
Location: Dallas, TX

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The Mezger (not Metzger, named for Hans Mezger) has Nikasil liners and individual cylinders that can be individually replaced. They changed from air cooled, with huge cooling fins, to individual water jackets on each cylinder when they went from air cooling to water back in the switch from the 993 to the 996. I do believe the new GT3 retains a dry sump oil pump though.