Fits Porsche 993 Carrera 2 / 4 Porsche 993 S / C4S Porsche 993 turbo This oil backflow kit incorporates a check valve between the oil tank and the engine which prevents the smoking on start up for naturally aspirated and turbocharged 993 models.
Perhaps you have installed a pressure side oil backflow kit on your turbo model but are still experiencing smoking on start up. The issue may be on the suction side. The problem on the suction side is due to the oil tank sitting higher than the engine oil pump. Gravity creates a positive pressure on the pump and slowly fills the engine case with time. The case fills up and eventually pushes oil into the catch tanks on the hot side / turbine side of the turbo charger. Once the car is started, the cars smokes very heavily which is often misdiagnosed as a defective turbocharger.
Sold individually. 1 necessary per car.
Recommendation: This kit is all that is necessary for naturally aspirated models.
It is best to address both the suction and pressure side to prevent the issue entirely on turbo charged models. We also sell a pressure side backflow kit under part # 993113320
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
993113320
The product you are viewing cross references to these numbers
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
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