2001 SUZUKI GRAND VITARA Cylinder head torque

6A2-6 ENGINE MECHANICAL (H27 ENGINE)
INSTALLATION
1) Install new intake manifold gaskets (1) to cylinder heads.
2) Install intake manifold (1).
Tighten bolts and nuts to specified torque.
Tightening torque
Intake manifold bolt and nut (a) :
23 N·m (2.3 kg-m, 16.5 lb-ft)
3) Install throttle body (2) to intake collector (1) with new throttle
body gasket.
Tighten bolts and nuts to specified torque.
Tightening torque
Throttle body bolt and nut (b) :
23 N·m (2.3 kg-m, 16.5 lb-ft)
4) Install EGR valve (1), EVAP canister purge valve (2), mani-
fold absolute pressure (MAP) sensor and each hoses to
intake collector and throttle body if removed.
Use new gasket, when installing IAC valve and EGR valve.
5) Install throttle body and intake collector assembly to intake
manifold with new intake collector gaskets.
1
(a)
(a)(a)
(a)
2 1
(b)
(b)
3. EVAP canister purge valve hose
2
1
3

ENGINE MECHANICAL (H27 ENGINE) 6A2-11
INSTALLATION
1) Install new manifold gaskets to cylinder heads and No.1 pipe
gasket to exhaust No.1 pipe.
2) Install exhaust manifolds.
•Always install new bolts with pre-coated adhesive to the
locations with ✱ mark.
•Tighten both manifold nuts and bolts to specified torque.
Tightening torque
Exhaust manifold bolt and nut (a) :
30 N·m (3.0 kg-m, 21.5 lb-ft)
3) Install stabilizer bar if it was removed. Refer to “STABILIZER
BAR / BUSHINGS” in Section 3D.
4) Install exhaust manifold stiffeners (if removed).
5) Install exhaust No.1 pipe (1).
Tighten exhaust No.1 pipe bolts to specified torque.
Tightening torque
Exhaust No.1 pipe bolt (b) :
50 N·m (5.0 kg-m, 36.5 lb-ft)
6) Tighten exhaust No.1 pipe nuts to specified torque.
Tightening torque
Exhaust No.1 pipe nut (b) :
50 N·m (5.0 kg-m, 36-5 lb-ft)
1. Left (No.1) exhaust manifold
2. Right (No.2) exhaust manifold
2. Exhaust No. 2 pipe
1. Exhaust No.1 pipe
2. Exhaust manifold
A. Without WU-TWC
B. With WU-TWC

ENGINE MECHANICAL (H27 ENGINE) 6A2-15
INSPECTION
Cam wear
Using a micrometer, measure cam height. If measured height is
below its limit, replace camshaft.
Intake cam height :
Standard : 40.402 – 40.562 mm (1.5906 – 1.5969 in.)
Limit : 40.300 mm (1.3581 in.)
Exhaust cam height :
Standard : 39.428 – 39.588 mm (1.5523 – 1.586 in.)
Limit : 39.400 mm (1.5512 in.)
Camshaft runout
Set camshaft between two “V” blocks, and measure its runout by
using a dial gauge.
If measured runout exceeds below specified limit, replace cam-
shaft.
Camshaft runout limit :
0.04 mm (0.002 in.)
Camshaft journal wear
Check camshaft journals and camshaft housings for pitting,
scratches, wear or damage.
If any malcondition is found, replace camshaft or cylinder head
with housing. Never replace cylinder head without replacing hous-
ings.
Check clearance by using gaging plastic. The procedure is as fol-
lows.
1) Clean housings and camshaft journals.
2) Make sure that all valve lash adjusters are removed and
install camshaft to cylinder head.
3) Place a piece of gaging plastic the full width of journal of
camshaft (parallel to camshaft).
4) Install camshaft housing.
5) Tighten camshaft housing bolts in such order ([A] : “1” →
“17”, [B] : “1” → “19”) as shown in the figure a little at a time
till they are tightened to specified torque.
NOTE:
Do not rotate camshaft while gaging plastic is installed.
[A] : RH bank
[B] : LH bank

ENGINE MECHANICAL (H27 ENGINE) 6A2-17
Valves and Cylinder Heads
1. Cylinder block 6. Exhaust valve 11. Valve stem oil seal 16. Cylinder head bolt
(hex hole bolt)
2. RH bank cylinder head 7. Intake valve 12. Valve spring retainer Tightening Torque
3. LH bank cylinder head 8. Valve spring seat 13. Valve cotter Do not reuse
4. RH bank cylinder head gasket :
Carved lot number on cylinder head
gasket should face up (toward cylinder
head side).9. Outer valve spring :
Be sure to position spring in place with
its bottom end (small-pitch end) facing
the bottom (valve spring seat side).14. Valve guide Apply engine oil to
sliding surface of
each parts.
5. LH bank cylinder head gasket :
Carved lot number on cylinder head
gasket should face up (toward cylinder
head side).10. Inner valve spring :
Be sure to position spring in place with
its bottom end (small-pitch end) facing
the bottom (valve spring seat side).15. Cylinder head bolt

ENGINE MECHANICAL (H27 ENGINE) 6A2-19
5) Install cylinder head to block.
After applying oil to cylinder head bolts, tighten them gradu-
ally as follows.
a) Tighten all bolts to 53 N·m (5.3 kg-m, 38.5 lb-ft) according
to numerical order in the figure.
b) In the same manner as in a), tighten them to 84 N·m (8.4
kg-m, 61.0 lb-ft).
c) Loosen all bolts until tightening torque is reduced to 0 in
reverse order of tightening.
d) In the same manner as in a), tighten them to 53 N·m (5.3
kg-m, 38.5 lb-ft).
e) In the same manner as in a) again, tighten them to speci-
fied torque.
Tightening torque
Cylinder head bolt (a) : 105 N·m (10.5 kg-m, 76.0 lb-ft)
Cylinder head bolt (hex hole bolt) (b) :
11 N·m (1.1 kg-m, 7.5 lb-ft)
6) Install water outlet cap.
7) Check timing mark on crankshaft as shown in the figure.
8) Install valve lash adjuster, camshaft, CMP sensor and RH
bank 2nd timing chain.
Refer to “CAMSHAFT AND VALVE LASH ADJUSTER” and
“RH (NO.2) BANK 2ND TIMING CHAIN AND CHAIN TEN-
SIONER” in this section. For CMP sensor, refer to “CMP
SENSOR” in Section 6F2.
9) Install 1st timing chain.
Refer to “1ST TIMING CHAIN AND CHAIN TENSIONER” in
this section.
10) Install LH bank 2nd timing chain.
Refer to “LH (NO.1) BANK 2ND TIMING CHAIN AND CHAIN
TENSIONER” in this section.
11) Install timing chain cover.
Refer to “TIMING CHAIN COVER” in this section. NOTE:
Don’t forget to install (b) bolts as shown in the figure.
1. Hex hole bolt
2. Crankshaft pulley side
3. Flywheel side
[A] RH bank
[B] LH bank
1. Crank timing pulley key
2. Oil jet