Porsche 911 GT3 RS User Handbook Manual page 26

VarioCam.
Both engines in the 911 GT3
models are equipped with enhan-
ced VarioCam. This system not
only adjusts the camshafts on the
intake side according to engine
speed and load, it also controls the
exhaust camshaft – for even more
power and torque. The continuous
valve timing adjustment is per-
formed by a rotary-type adjuster
on each camshaft. VarioCam is
an engine control concept that
distinguishes between different
load scenarios and adapts to the
corresponding power requirement.
The adjustment is performed
seamlessly by the Motronic
ME7.8.2 electronic engine man-
agement system. This enables
smoother running characteristics,
better fuel economy, lower exhaust
emissions and, most important
of all, added power and torque
across the entire engine speed
range.
· 36 ·
Dry-sump lubrication.
A consistent oil supply is funda-
mental to track and competition
driving. This is ensured by the
® dry-sump lubrication system, even
during high lateral and longitudinal
acceleration.
Once it has passed through the
engine, two scavenge pumps in
each cylinder head and another
two in the crankcase take the
engine oil quickly back to an
external reservoir.
VarioCam