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Wet vs Dry sump

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Pardon my cut and paste, but here is what I found at "How Stuff Works."

 

Dry sump systems have several important advantages over wet sumps:

  • Because a dry sump does not need to have an oil pan big enough to hold the oil under the engine, the main mass of the engine can be placed lower in the vehicle. This helps lower the center of gravity and can also help aerodynamics
  • The oil capacity of a dry sump can be as big as you want. The tank holding the oil can be placed anywhere on the vehicle.
  • In a wet sump, turning, braking and acceleration can cause the oil to pool on­ one side of the engine. This sloshing can dip the crankshaft into the oil as it turns or uncover the pump's pick-up tube.
  • Excess oil around the crankshaft in a wet sump can get on the shaft and cut horsepower. Some people claim improvements of as much as 15 horsepower by switching to a dry sump.

(by allowing a lower hoodline).

The disadvantage of the dry sump is the increased weight, complexity and cost from the extra pump and the tank -- but that's a small price to pay for such big benefits!

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  • Excess oil around the crankshaft in a wet sump can get on the shaft and cut horsepower. Some people claim improvements of as much as 15 horsepower by switching to a dry sump.

 

 

 

Something that should be added to this, that's potentially more important than the parasitic power loss.

 

When the crankshaft is spinning in the oil, it mixes air into the oil. Air is NOT a lubricant. This can potentially be very damaging to the engine.

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