Suzuki Wagon R Manual page 1196

ENGINE MECHANICAL 6A-5
CYLINDER BLOCK
The cylinder block is made of cast aluminum alloy and has 3 cylinders arranged "In-Line".
A cylindrical cast iron sleeve is installed in each cylinder.
CRANKSHAFT AND MAIN BEARINGS
A monoblock crankshaft made of forged steel is supported by 4 main bearings which are of precision insert type.
Three crank pins on the crankshaft are positioned 120_ apart.
PISTONS, RINGS, PISTON PINS AND CONNECTING RODS
The piston is cast aluminum alloy, and has two compression rings and one oil ring.
Among two compression rings (top and 2nd rings), the top ring is plated with hard chromium for improvement in
abrasion resistance.
The oil ring consists of two rails and one spacer.
The piston pin is offset 0.5 mm towards the major thrust side.
This allows a gradual change in thrust pressure against the cylinder wall as the piston travels its path.
Pins, made of chromium steel, have a floating fit in the pistons and in the connecting rods. The connecting rods
are made of forged steel, and the rod bearings are of precision insert type.