Porsche 996 TT, Repair Manual

Page: 122 / 2099

Timing with 1 mm
valve travel
Inlet closes 20° after BDC
Outlet opens 41° before BDC
Outlet closes 9° before TDC
Intake system Tuned−intake system
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Engine cooling
Engine
cooling Water cooling; 3 radiators in front of the front wheels. Two electric fans, controlled in
three stages
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Engine lubrication
Type Dry sump lubrication with separate oil canister
Oil cooling Via oil−water heat exchanger on pressure side behind oil pump
Oil pressure at n=5000 rpm, T=90°C Approx. 6.5 bar
Oil pressure indicator Oil pressure indicator lamp plus instrument
Oil consumption Approx. 1.0 l/1000 km
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Engine control
Engine control module Bosch ME 7.8
Ignition DME, individual spark coils, knock control
Firing order 1−6−2−4−3−5
Spark plugs Bosch FR 6 LOC
Beru 14 − FR 6 LDU
Electrode gap 1.6±0.2 mm (0.06±0.008 in)
E−gas Electronic throttle actuator control via DME ME 7.8
USA version On−Board Diagnosis II
Boost pressure control Absolute pressure−guided turbocharger control
einordnung
Engine design 59