Camshaft - Subaru impreza 2002 Service Manual

Mechanical

5. Camshaft

The DOHC engine uses four camshafts in all; intake and exhaust camshafts on each of the right
and left banks.
The cam lobe noses are finished by "chill" treatment to increase wear resistance and anti-scuffing
properties.
Each camshaft is supported at its three journals and held in position by three camshaft caps. Each
camshaft has a flange which fits in the corresponding groove in the cylinder head to receive thrust
forces generated in the camshaft.
With the engine for the STi model, each intake camshaft has teeth at the rear end for the variable
valve timing position sensor.
B: STi MODEL
(1) Left intake camshaft
(2) Journal
(3) Flange
(4) Teeth for variable timing position sensor
CAMSHAFT
(5) Left exhaust camshaft
(6) Right intake camshaft
(7) Right exhaust camshaft
ME-2
NF0625