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BlkBird BlkBird is offline
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Join Date: Feb 2002
Location: Atlanta, GA
Posts: 938
Holy Toledo!

Anybody know these figures for a 3.3 930?

Bore: Cylinder diameter in inches.

Stroke: Engine stroke in inches.

Engine VE: Engine Volumetric Efficiency in percent. VE changes with engine RPM, a engine at wide open throttle at 3000rpm could have a VE of 90% and at 6000rpm 60%. This is a rough guide. At maximum RPM modified engines may have a better VE, eg: average overhead valve engines 45% to 75%, overhead cam twin valve 65% to 80%, four valves per cylinder 75% to 90%.

Standard Comp: The Compression Ratio of the engine.

Boost Pressure: Boost pressure in pounds per square inch.
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Boost Addiction - honestly, I have it under control
1989 911 Turbo Cabriolet
Mods include: Kokeln IC, GHL Headers, Hooligan muffler, Modified K27 7200, BL WUR, LC-1 & XD-16, Bilstein Sports (4), TRG sway bars, Oversize torsion bars, Strut brace
Old 11-20-2006, 05:08 PM
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