Subaru XT 1988 Service Manual page 210

2-3 ENGINE
CYLINDER BLOCK
1) The cylinder block, made of an aluminium alloy, is light-
weight and provides good heat conduction, and is divided into
two portions, left-side half and right-side half, due to the
adoption of a horizontally opposed piston arrangement.
Cylinder block (RH)
Fig. 111
2} Four main journals are provided because of the 6-cylinder
engine. These journals are lubricated through oil passages lo-
cated in the right bank of the engine. The oil passage is en·
larged to reduce oil resistance.
Main journal
Oil passage
L2·1280
CYLINDER HEAD
2) The intake ports are independent types. The #1 and #3,
1) The cylinder head, made of an aluminium alloy, forms a and
#2
and
#4
exhaust ports are assembled types and the
#5
part of the bath-tub type combustion chamber which features and
#6
exhaust ports are independent types.
higher combustion efficiency.
Q
Intake port
Exhaust port
Intake port
Exhaust port
(#2, #4,
#6)
(#1, #3,
#5)
L2-1281
Fig. 112
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