Description & Operation: 911SC

1983 Porsche 911 2D ConvertibleSECTION 911SC

Components of system include a connecting hose located between crankcase and oil tank, and a second hose connecting oil tank to return valve at air cleaner. Vapors and blow-by gases from crankcase are taken into oil tank, where excess oil is separated from gases. The gases are then drawn into intake chamber through a hose that has a metered orifice and flame arrestor.

Fig 1: Crankcase Ventilation System (911SC)
G41040
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.