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David David is offline
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Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 8,690
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Twin plugging on a 930 isn't as much of a benefit because the piston doesn't have the dome that blocks the flame travel. It's my understanding that 98mm and larger pistons on a 930 benefit from twin plugging because the combustion chamber is so large.
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2014 Cayman S
2011 Cayenne Turbo
1979 930 (475 rwhp at 0.95 bar)
Old 03-09-2007, 04:54 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)