TORQUE VALUES FOR +8s

N.B. Later Plus 8s will have only two rows of head bolts and torx bolts

 
 
Operation
Description
Specified Torque
Nm
lbf/lb
Air intake adaptor to carbs 5/16" U.N.F nut
24 
17 
Alternator bracket to head 3/8" U.N.C bolt
34
25
Alternator bracket to head 5/16" U.N.C bolt
24
17
Alternator to mounting bracket 5/16" U.N.F bolt
24
17
Alternator to mounting bracket 5/16" U.N.F nut
24
17
Alternator to adjusting link M8 bolt
24
17
Chain wheel to camshaft 7/16" x 20
61
45
Connecting rod bolt 11/32" x 24
47
35
Clutch attachment to flywheel 5/16" U.N.F bolt
27.5
20
Cylinder head bolts Nos 1 to 10
95
70
Cylinder head bolts* Nos 11 to 14*
34*
25*
Distributor clamp bolt 3/8" x 16
19
14
Exhaust manifold to cylinder heads 3/8" U.N.C bolt
22
16
Fan attachment 1/4" U.N.F
11.5
9
Flex plate to starter ring 5/16" U.N.F bolt
34
25
Flex plate to crankshaft 7/16" U.N.F bolt
81
60
Flywheel to crankshaft 7/16" U.N.F bolt
81
60
Inlet manifold to cylinder heads 3/8" U.N.C bolt
40
30
Lifting eye to cylinder heads 5/16" U.N.C bolt
24
17
Main bearing cap bolts 1/2" x 13 bolt
75
55
Main bearing cap rear bolts 1/2" x 13 bolt
95
70
Manifold gasket clamp bolt 5/16" U.N.C bolt
20
15
Oil pump cover to timing cover 1/4" U.N.C
11.5
9
Oil plug 9/16" U.N.F
27.5
20
Oil relief valve cap 3/4" U.N.F
40
30
Oil sump drain plug 1/2" x 20
47
35
Oil sump to cylinder block 5/16 U.N.C setscrew
11
8
Oil sump rear to cylinder block 5/16 U.N.C setscrew
24
17
Rocker cover to cylinder head 1/4 U.N.C setscrew
7
5
Rocker shaft to cylinder head 3/8" U.N.C bolt
40
30
Sensing unit to bracket No 10 U.N.C bolt
9
6
Spark plug 14 mm
16
12
Starter motor attachment 3/8" U.N.C bolt
47
 
35
Timing cover to cylinder block 5/16" U.N.C bolt
27.5
 
20
Timing cover to cylinder block 5/16" U.N.F nut
27.5
 
20
Waterpump to cylinder block 5/16" U.N.C bolt
27.5
 
20
Water outlet elbow to inlet manifold 5/16" U.N.C bolt
27.5
 
20
Water pipe to inlet manifold 1/4" U.N.C bolt
11
 
8
Damper to crankshaft 5/8" U.N.F
!!??
 
210
Fuel Injection Components
Description
Nm
 
lbf/ft
Air cleaner bracket to body M8
20
 
15
Air cleaner to bracket M6
10
 
7
Air flow meter to mounting bracket M8
20
 
15
Cold start injector to plenum 6mm
10
 
7
Decel valve to plenum 1/4" U.N.C
11
 
8
Exhaust manifold gas sampling plug 7/16" U.N.F
27.5
 
20
Extra air valve mounting 1/4" U.N.C setscrew
11
 
8
Injector clamp plates 1/4" U.N.C
11
 
8
Plenum chamber to inlet manifold 5/16" U.N.C
11
 
8
Potentiometer to plenum 1/4" U.N.C
11
 
8
Pressure regulator to bracket M 12 nut
30
 
22
Pressure regulator to inlet manifold 1/4" U.N.C
11
 
8