Engine Cooling; Engine Lubrication - Porsche 996 TT Repair Manual

Connecting rods
Con−rod bearings
Piston
Cylinder
Cylinder head
Camshaft housing
Valve guide
Valve arrangement
Valve control
Camshaft
Camshaft adjustment
Valve clearance
Valve timing
with 1 mm valve travel and zero clearance
(kinetic clearance of the operating plunger taken
into account, basic inlet camshaft setting early)
Intake system
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Engine cooling

Engine cooling
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Engine lubrication

Engine lubrication
Type
Oil cooling
Oil filter
Engine design
einordnung
Forged
Plain bearings
Pressed light alloy
Nikasil cylinder lining
Light alloy
Non−metallic
Pressed in
2 inlet valves suspended in parallel V arrangement
2 exhaust valves suspended in parallel V
arrangement
Via flat−base tappets
From the crankshaft via a gear wheel to the
intermediate shaft, and from there to the exhaust and
inlet camshafts via one double chain each.
Porsche VarioCam Plus with 30° adjustment
Hydraulic valve clearance compensation
Inlet opens at 10° before TDC
Inlet closes at 20° after BDC
Outlet opens at 41° before BDC
Outlet closes at 9° before TDC
Tuned−intake system (plastic)
Water cooling; 3 radiators ahead of the front wheels.
(Additional radiator for Tiptronic vehicles)
Two electric fans, controlled in three stages
Dry sump lubrication with separate canister
Via oil−water heat exchanger
On pressure side behind oil pump
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