Engine Overhaul Manual v8 4.0 4.6
INFORMATION
2
DATA, TORQUE & TOOLS
Oil pump
Inner to outer rotor clearance - maximum
0.25 mm
. . . . . . . . .
0.01 in
Rotors to cover plate clearance - maximum
0.1 mm
. . . . . . .
0.004 in
Drive gear wear step depth - maximum
0.15 mm
. . . . . . . . . . .
0.006 in
Oil pressure relief valve
Spring free length
60.0 mm
. . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 in
Oil pressure by-pass valve
Spring free length
60.0 mm
. . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 in
Camshaft
End-float
0.05 to 0.35 mm
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0.002 to 0.014 in
Maximum run-out
0.05 to 0.25 mm
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
0.002 to 0.010 in
Piston rings
Ring to groove clearance:
1st compression
0.05 to 0.10 mm
. . . . . . . . . . . . . . . . . . . . . . . . . . .
0.002 to 0.004 in
2nd compression
0.05 to 0.10 mm
. . . . . . . . . . . . . . . . . . . . . . . . . .
0.002 to 0.004 in
Ring fitted gap:
1st compression
0.30 to 0.50 mm
. . . . . . . . . . . . . . . . . . . . . . . . . . .
0.012 to 0.02 in
2nd compression
0.40 to 0.65 mm
. . . . . . . . . . . . . . . . . . . . . . . . . .
0.016 to 0.026 in
Oil control rails
0.38 to 1.40 mm
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
0.014 to 0.05 in
Oil control ring width
3.00 mm
. . . . . . . . . . . . . . . . . . . . . . . . .
0.12 in - maximum
Pistons
Piston diameter:
Production - Grade A
93.970 to 93.985 mm
. . . . . . . . . . . . . . . . . . . . . . . .
3.700 to 3.7002 in
Production - Grade B*
93.986 to 94.0 mm
. . . . . . . . . . . . . . . . . . . . . . .
3.7003 to 3.701 in
Clearance in bore
0.015 to 0.045 mm
. . . . . . . . . . . . . . . . . . . . . . . . . . .
0.001 to 0.002 in
Gudgeon pins
Length
60.00 to 60.50 mm
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.35 to 2.4 in
Diameter
23.995 to 24.000 mm
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0.94 to 0.95 in
Clearance in piston
0.006 to 0.015 mm
. . . . . . . . . . . . . . . . . . . . . . . . . .
0.0002 to 0.0006 in
Connecting rods
Length between centres:
4.0 litre
155.12 to 155.22 mm
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.10 to 6.11 in
4.6 litre
149.68 to 149.78 mm
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.89 to 5.91 in
End-float on crankshaft
0.15 to 0.36 mm
. . . . . . . . . . . . . . . . . . . . . . .
0.006 to 0.014 in
Cylinder bore
Cylinder bore:
Grade A piston fitted
94.00 to 94.015 mm
. . . . . . . . . . . . . . . . . . . . . . . .
3.700 to 3.701 in
Grade B piston fitted
94.016 to 94.030 mm
. . . . . . . . . . . . . . . . . . . . . . . .
3.7014 to 3.702 in
Cylinder bore maximum ovality
0.013 mm
. . . . . . . . . . . . . . . . .
0.0005 in
