Page 366 of 557

1. Gaging plastic
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-71
Main Bearings
General information
Service main bearings are available in standard size and 0.25
mm (0.0098 in.) undersize, and each of them has 5 kinds of bear-
ings differing in tolerance.
Upper half of bearing (2) has oil groove (3) as shown in figure.
Install this half with oil groove to cylinder block (1).
On each main bearing cap, arrow mark and number are em-
bossed as shown in figure.
When installing each bearing cap to cylinder block, point arrow
mark toward crankshaft pulley side and install each cap from that
side to flywheel side in ascending order of numbers “1”, “2”, “3”,
“4” and “5”. Tighten cap bolts to specified torque.
Inspection
Check bearings for pitting, scratches, wear or damage.
If any malcondition is found, replace both upper and lower halves.
Never replace one half without replacing the other half.
Main bearing clearance
Check clearance by using gaging plastic (1) according to the follow-
ing procedure.
1) Remove bearing caps.
2) Clean bearings and main journals.
3) Place a piece of gaging plastic to full width of bearing (parallel
to crankshaft) on journal, avoiding oil hole.
4) Install bearing cap as previously outlined and evenly toque cap
bolts to specified torque.
Bearing cap MUST be torqued to specification in order to assure
proper reading of clearance.
Tightening Torque
(a): 54 N
.m (5.4 kg-m, 39.0 lb-ft)
NOTE:
Do not rotate crankshaft while gaging plastic is installed.
Page 370 of 557

ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-75
If necessary, regrind crankshaft journal and select under-size
bearing to use with it as follows.
1) Regrind journal to the following finished diameter.
Finished diameter: 44.732 – 44.750 mm
(1.7611 – 1.7618 in.)
2) Using micrometer, measure reground journal diameter.
Measurement should be taken in two directions perpendicular
to each other in order to check for out-of-round.
3) Using journal diameter measured above and alphabets
stamped on mating surface of cylinder block, select an under-
size bearing by referring to table given below.
Check bearing clearance with newly selected undersize bear-
ing.
Measured journal diameter
44.744 – 44.750 mm
(1.7616 – 1.7618 in.)44.738 – 44.744 mm
(1.7613 – 1.7616 in.)44.732 – 44.738 mm
(1.7611 – 1.7613 in.)
Alphabets stampedAGreen & RedBlack & RedRed only
on mating surfaceBBlack & RedRed onlyYellow & Red
of cylinder block
CRed onlyYellow & RedBlue & Red
Undersize bearing to be installed
Rear Oil Seal
Carefully inspect oil seal (1) for wear or damage. If its lip is worn or
damaged, replace it.
For oil seal installation, press-fit rear oil seal (1) so that oil seal
housing (2) end face is flush with oil seal end face.
Page 372 of 557

ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-77
5) Rebore and hone cylinder to calculated dimension.
NOTE:
Before reboring, install all main bearing caps in place and
tighten to specification to avoid distortion of bearing bores.
6) Measure piston clearance after honing.
INSTALLATION
NOTE:
All parts to be installed must be perfectly clean.
Be sure to oil crankshaft journals, journal bearings, thrust
bearings, crankpins, connecting rod bearings, pistons, pis-
ton rings and cylinder bores.
Journal bearings, bearing caps, connecting rods, rod bear-
ings, rod bearing caps, pistons and piston rings are in com-
bination sets. Do not disturb such combination and make
sure that each part goes back to where it came from, when
installing.
1) Install main bearings to cylinder block.
One of two halves of main bearing (2), has an oil groove (3).
Install it to cylinder block (1), and the other half without oil groove
to bearing cap.
Make sure that two halves are painted in the same color.
2) Install thrust bearings (1) to cylinder block between No.2 and
No.3 cylinders. Face oil groove (2) sides to crank webs.
Page 373 of 557

1. Short bolts
2. Long bolts
6A1-78 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
3) Install crankshaft to cylinder block.
4) Install bearing cap to cylinder block, making sure to point arrow
mark (on each cap) to crankshaft pulley side. Fit them sequen-
tially in ascending order, 1, 2, 3, 4 and 5, starting from pulley side.
After installing bearing cap stiffeners, tighten bearing cap bolts
in such order as shown in figure a little at a time and repeat it till
they are tightened to specified torque.
Tightening Torque
(a): 54 N
.m (5.4 kg-m, 39.0 lb-ft)
NOTE:
After tightening cap bolts, check to be sure that crankshaft
rotates smoothly when turning it by 8.0 N
.m (0.8 kg-m, 5.8
lb-ft) torque or below.
5) Install new gasket and oil seal housing.
Do not reuse gasket removed in disassembly. Apply engine oil
to oil seal lip before installation. Tighten housing bolts to specifi-
cation.
Tightening Torque
(a): 11 N
.m (1.1 kg-m, 8.0 lb-ft)
NOTE:
As there are 2 types of housing bolts, refer to figure for their
correct use.
After installing oil seal housing, gasket edges might bulge out;
if so, cut them off to make them flush with cylinder block and oil
seal housing.
6) Install oil pump.
Refer to item “Oil pump” for installation of oil pump.
7) Install flywheel (M / T model) or drive plate (A / T model).
Using special tool, lock flywheel or drive plate, and torque its
bolts to specification.
Special Tool
(A): 09924-17810
Tightening Torque
(a): 78 N
.m (7.8 kg-m, 56.5 lb-ft) (Flywheel bolts)
(a): 95 N
.m (9.5 kg-m, 69.0 lb-ft) (Drive plate bolts)
Page 374 of 557
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-79
8) Install pistons and connecting rods as previously outlined.
9) Install oil pump strainer and oil pan as previously outlined.
10) Install cylinder head assembly to cylinder block as previously
outlined.
11) Install camshaft, crankshaft timing belt pulley, timing belt,
crankshaft pulley, water pump pulley, etc., as previously out-
lined.
12) Install clutch to flywheel (for M / T vehicle). For clutch installa-
tion, refer to “CLUTCH” section.
13) Install engine mountings and brackets.
Refer to tightening torque for INSTALLATION of “ENGINE AS-
SEMBLY” in this section.
14) Install engine with transmission to vehicle as previously out-
lined.
Page 375 of 557
1. 09915-64510-001
Compression gauge
2. 09915-64510-002
Connector
3. 09915-64530
Hose
4. 09915-67010
Attachment
09915-67311
Vacuum gauge09918-08210
Vacuum gauge hose joint09915-77311
Oil pressure gauge
09917-18211
Tappet adjuster wrench09919-16020
17 mm socket09926-18210
Oil seal guide (Vinyl resin)09917-68221
Camshaft pulley holder
1. 09916-14510
Valve lifter
2. 09916-14910
Valve lifter attachment
09916-84511
Forceps09916-44910
Valve guide remover09916-34542
Reamer handle
09916-38210
Reamer (11 mm)09916-58210
Valve guide installer handle09916-56011
Valve guide installer
attachment09916-34550
Reamer (5.5 mm)
6A1-80 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
SPECIAL TOOLS
Page 376 of 557
09917-98221
Valve stem seal installer09916-77310
Piston ring compressor09924-17810
Flywheel holder09915-47330
Oil filter wrench
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-81
REQUIRED SERVICE MATERIALS
MATERIALSRECOMMENDED
SUZUKI PRODUCTUSE
SealantSUZUKI BOND NO.1207C
(99000-31150)Mating surfaces of cylinder block and oil pan.
SealantSUZUKI BOND NO.1215
(99000-31110)Mating surfaces of camshaft housings (No.6).
Mating surfaces of CMP sensor case and cylinder
block.
Page 377 of 557

6A1-82 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
TIGHTENING TORQUE SPECIFICATIONS
FASTENING PARTSTIGHTENING TORQUEFASTENING PA R T SN.mkg-mlb-ft
Oil pressure switch131.39.5
Valve adjusting screw lock nuts121.29.0
Cylinder head cover bolts111.18.0
Intake manifold bolts and nuts232.317.0
Timing belt tensioner stud111.18.0
Timing belt tensioner bolt252.518.0
Timing belt cover bolts and nut111.18.0
Exhaust manifold bolts and nuts323.223.5
Crankshaft pulley bolt161.611.5
Crankshaft timing belt pulley bolt13013.094.0
Exhaust pipe nuts and bolts505036 5Exhaust manifold stiffener nut505.036.5
Oil pump strainer bolt and stay bolt111180Oil pan bolts and nuts111.18.0
CKP sensor bolt101.07.5
Oil pan drain plug505.036.0
Oil pump rotor plate screws111180Oil pump case bolts111.18.0
Camshaft housing bolts111180Rocker arm shaft bolts111.18.0
Camshaft timing belt pulley bolt606.043.5
Cylinder head venturi plug3.50.352.5
Cylinder head bolts686.849.0
Connecting rod bearing cap nuts353.525.5
Crankshaft main bearing cap bolts545.439.0
Flywheel bolts787.856.5
Drive plate bolts959.569.0
Engine mounting & bracket bolts and nutsRefer to INSTALLATION of
ENGINE ASSEMBLY in this section.