2007 ISUZU KB P190 height

Engine Mechanical – V6 Page 6A1–173

1 Grind the valve seats (2) to the correct angle
specification, refer to 5 Specifications.
2 Using the correct angle specification, grind and relieve the valve seats (1) to correctly position the
valve seating surface (2) to the valve.
3 Using the correct angle specification, grind and undercut the valve seats (3) to narrow the valve seat
widths to the specifications, refer to 5 Specifications.
4 If the original valve is being used, grind the valve to the specifications, refer to 5 Specifications.
Measure the valve margin again after grinding, refer
to Valve Margin Measurement Procedure in this
Section. Replace the valve if the margin is out of
specification. New valves do not require grinding.
5 W hen grinding the valves and seats, grind off as little material as possible. Cutting valve seat results in
lowering the valve spring pressure.
6 Install the valve in the cylinder head.
Figure 6A1 – 296
CAUTION
If using refaced valves, lap the valves into the
seats with a fine grinding compound. The
refacing and reseating operations should
leave the refinished surfaces smooth and true
so that minimal lapping is required. Excessive
lapping will groove the valve face and prevent
a good seat when hot.
NOTE
• Clean any remaining lapping compound from
the valve and seat with solvent and
compressed air prior to final assembly.
• If fitting new valves, do not lap the valves
under any condition.

7 After obtaining the correct valve seat width in the cylinder head, measure the valve stem height, refer to Valve Stem Height Measurement Procedure in this Section.
8 If the valve stem height is acceptable, test the seats for concentricity, refer to Valve-to-Seat Concentricity Measurement Procedure in this Section.

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–174

Valve Stem Height Measurement Procedure
CAUTION
To determine the valve stem height
measurement, measure from the valve
spring seat to the valve spring retainer.
1 Install the valve into the valve guide.
2 Ensure the valve is seated to the valve seat.
3 Install the valve stem oil seal.
4 Install the valve spring retainer and valve stem keys.
5 Measure the distance (1) between the cylinder head to the bottom of the valve spring retainer, refer to 5
Specifications.
6 If the maximum height specification is exceeded, a new valve should be installed and the valve stem
height re-measured.
Figure 6A1 – 297
CAUTION
Do not grind the valve stem tip. The tip of the
valve is hardened and grinding the tip will
eliminate the hardened surface causing
premature wear and possible engine damage.
CAUTION
Do not use shims to adjust valve stem height.
The use of shims will cause the valve spring
to bottom out before the camshaft lobe is at
peak lift and engine damage could result.
7 If the valve stem height still exceeds the maximum height specification, the cylinder head must be replaced.
Assemble
1 Install the cylinder head coolant threaded plugs (1) and tighten to the correct torque specification.




Cylinder head threaded plug ..............................31.0 Nm

Figure 6A1 – 298

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–288

5 Specifications
General
Engine Type.................................................................................................................... ..... V6
Bank Angle ..................................................................................................................... .... 60°
Displacement ............................................................................................ 3.6 litre (3,565 cm3)
Bore ........................................................................................................................... .... 94 mm
Stroke ......................................................................................................................... 85.6 mm
Compression Ratio ......................................................................................................... 10.2: 1
Cranking Speed at 40 °C .............................................................................................80 r.p.m.
Spark Plug Gap ............................................................................................................ 1.1 m m
Firing Order............................................................................................................. 1-2-3- 4-5-6
Cylinder Block
Cylinder Bore Diameter ........................................................................... 93.992 – 94.008 mm
Cylinder Out-of-Round – Production Maximum ........................................................ 0.013 mm
Crankshaft Main bearing bore Diameter .................................................. 72.867 – 72.881 mm
Cylinder Head Deck Surface Flatness ........................................................................ 0.05 mm
Crankshaft
Connecting Rod Journal Diameter ........................................................... 55.992 – 56.008 mm
Connecting Rod Journal Out-of-Round..................................................................... 0.005 mm
Connecting Rod Journal Taper ................................................................................ .0.005 mm
Connecting Rod Journal Width (Production)........................................................... 22.000 mm
Connecting Rod Journal Width (Service limit).......................................... 21.920 – 22.080 mm
Crankshaft End Play .................................................................................... 0.100 – 0.330 mm
Crankshaft Main Bearing Clearance ............................................................ 0.010 – 0.060 mm
Crankshaft Main Journal Diameter ......................................................... .67.992 – 68.008 mm
Crankshaft Main Journal Out-of-Round .................................................................... 0.005 mm
Crankshaft Main Journal Taper................................................................................ .0.005 mm
Crankshaft Main Journal Width, #2, 4 (Production) ....................................................... 24 mm
Crankshaft Main Journal Width, #2, 4 (Service)....................................... 23.900 – 24.100 mm
Crankshaft Main Journal Width, #3 (Production) .................................................... 24.400 mm
Crankshaft Main Journal Width, #3 (Service) .......................................... 24.360 – 24.440 mm
Crankshaft Main Journal Thrust Wall Runout .............................................. 0.000 – 0.040 mm
Crankshaft Main Journal Thrust Wall Square .............................................. 0.000 – 0.010 mm
Crankshaft Rear Flange Runout ............................................................................... 0.025 mm
Crankshaft Reluctor Ring Runout - Maximum........................................................... 1.500 mm
Crankshaft Thrust Bearing Clearance.......................................................... 0.076 – 0.305 mm
Crankshaft Thrust Surface Runout ........................................................................... 0.040 mm
Crankshaft Thrust Surface – Height Diameter ........................................................ 95.000 mm
Connecting Rod
Connecting Rod Length - Bore Centre-to-Centre.................................................. 150.400 mm
Connecting Rod Bore Diameter - Bearing End ........................................ 59.620 – 59.636 mm
Connecting Rod Bore Diameter - Pin End ............................................... 24.007 – 24.021 mm
Connecting Rod Width ........................................................................................... 21.775 mm
Connecting Rod Side Clearance.................................................................. 0.095 – 0.355 mm
Connecting Rod Bearing Clearance ............................................................ 0.010 – 0.070 mm
Piston
Piston Diameter ....................................................................................... 93.956 – 93.974 mm
Piston Pin Bore Diameter ........................................................................ 24.005 – 24.009 mm
Piston Ring Groove Width - First (Top) Compression Ring ......................... 1.220 – 1.240 mm
Piston Ring Groove Width - Second Compression Ring .............................. 1.510 – 1.530 mm

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–289

Piston Ring Groove Width - Oil Control Ring ............................................... 2.510 – 2.530 mm
Piston to Bore Clearance ............................................................................. 0.026 – 0.052 mm
Piston Pin
Piston Pin Diameter ..................................................................................23.997 - 24.000 mm
Piston Pin Length..................................................................................... 60.600 – 61.100 mm
Piston Pin Clearance to Connecting Rod Bore ............................................. 0.007 – 0.024mm
Piston Pin Clearance to Piston Pin Bore....................................................... 0.004 – 0.012mm
Piston Rings
Piston Ring to Groove Clearance:
• First (Top) Compression Ring............................................................... 0.030 – 0.065 mm
• Second Compression Ring ................................................................... 0.015 – 0.060 mm
• Oil Control Ring .................................................................................... 0.030 – 0.170 mm
Piston Ring End Gap:
• First (Top) Compression Ring............................................................... 0.150 – 0.300 mm
• Second Compression Ring ................................................................... 0.280 – 0.480 mm
• Oil Control Ring .................................................................................... 0.150 – 0.600 mm
Cylinder Head
Combustion Chamber Volume.................................................................................. 53.600 cc
Valve Guide Bore Diameter – Intake ........................................................... 6.000 – 6.020 mm
Valve Guide Bore Diameter – Exhaust ........................................................ 6.000 – 6.020 mm
Valve Guide Installed Height.................................................................... 14.050 – 14.550 mm
Stationary Hydraulic Lash Adjuster (SHLA) Bore Diameter ..................... 12.008 – 12.030 mm
Valve Seat Angle – Seating Surface ................................................................................... 45 °
Valve Seat Angle – Relief Surface ...................................................................................... 30 °
Valve Seat Angle – Undercut Surface ................................................................................ 60 °
Valve Seat Runout – Maximum ................................................................................ 0.050 mm
Valve Seat Width – Exhaust Seating Surface .............................................. 1.400 – 1.800 mm
Valve Seat Width – Exhaust Relief Surface ................................................. 0.700 – 0.900 mm
Valve Seat Width – Intake Seating Surface ................................................. 1.000 – 1.400 mm
Valve Seat Width – Intake Relief Surface .................................................... 0.500 – 0.700 mm
Engine Block Deck Surface Flatness .......................................................................... 0.05 mm
Exhaust Manifold Deck Surface Flatness ................................................................... 0.25 mm
Intake Manifold Deck Surface Flatness ...................................................................... 0.05 mm
Valve System
Face Angle..................................................................................................................... 44.25°
Face Runout ............................................................................................................. 0.038 m m
Valve Face Width – Exhaust..................................................................................... 2.750 mm
Valve Face Width – Intake ........................................................................................ 2.180 mm
Valve Head Diameter – Exhaust .............................................................. 30.470 – 30.730 mm
Valve Head Diameter – Intake ................................................................. 36.830 – 37.090 mm
Valve Installed Height .................................................................................. 35.26 – 36.69 mm
Valve Length – Exhaust .......................................................................................... 97.110 mm
Valve Length – Intake ........................................................................................... 101.230 mm
Valve Stem Diameter (standard).................................................................. 5.955 – 5.975 mm
Valve Stem Diameter (oversize) .................................................................. 6.013 – 6.033 mm
Valve Stem to Guide Clearance................................................................... 0.025 – 0.065 mm
Hydraulic Lash Adjuster Diameter ........................................................... 11.986 – 12.000 mm
Hydraulic Lash Adjuster to Bore Clearance ................................................. 0.037 – 0.041 mm
Rocker Arm/Camshaft Follower Ratio............................................................................. 1.68:1
Rocker Arm/Camshaft Follower Roller Diameter ..................................... 17.740 – 17.800 mm
Valve Spring Free Length ........................................................................ 42.500 – 45.500 mm

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–290

Valve Spring Installed Height – Closed................................................................... 35.000 mm
Valve Spring Installed Height – Open ..................................................................... 24.000 mm
Valve Spring Load – Closed ................................................................................. 247 – 273 N
Valve Spring Load – Open.................................................................................... 598 – 662 N
Valve Spring Diameter – Inside Top ........................................................ 12.200 – 12.700 mm
Valve Spring Diameter – Outside Top ..................................................... 18.000 – 20.500 mm
Valve Spring Diameter – Inside Bottom ................................................... 17.950 – 18.450 mm
Valve Spring Diameter – Outside Bottom ............................................................... 26.000 mm
Valve Spring Coil Thickness ........................................................................ 3.250 – 3.900 mm
Valve Spring Total Number of Coils ..................................................................................... 7.1
Camshaft
Camshaft Bearing Inside Diameter – Front Number 1 ............................. 35.000 – 35.020 mm
Camshaft Bearing Inside Diameter – Middle & Rear Number 2 - 4.......... 27.000 – 27.020 mm
Camshaft End Play ...................................................................................... 0.045 – 0.215 mm
Camshaft Journal Diameter – Front Number 1 ........................................ 34.936 – 34.960 mm
Camshaft Journal Diameter – Middle & Rear Number 2 - 4..................... 26.936 – 26.960 mm
Camshaft Journal Out-of-round ................................................................................ 0.006 mm
Camshaft Journal to Bore Clearance ........................................................... 0.040 – 0.084 mm
Camshaft Runout – Front & Rear Number 1 and 4 ................................................... 0.025 mm
Camshaft Runout – Middle Number 2 and 3............................................................ .0.050 mm
Camshaft Lobe Duration – Exhaust (@ 0.150 mm Lift) .................................................... 238 °
Camshaft Lobe Duration – Intake (@ 0.150 mm Lift)........................................................ 237 °
Camshaft Lobe Height – Exhaust ................................................................................. 6.6 mm
Camshaft Lobe Height – Intake .................................................................................... 6.5 mm
Camshaft Lobe Overlap (@ 0.150 mm Lift) ..................................................... -5 ° (no overlap)
Valve Opens – Exhaust .........................................................................................229 ° BTDC
Valve Opens – Intake ...............................................................................................14 ° ATDC
Centre-line – Exhaust .............................................................................................111 ° BTDC
Centre-line – Intake ................................................................................................132 ° ATDC
Valve Closes – Exhaust ..............................................................................................9 ° ATDC
Valve Closes – Intake ............................................................................................252 ° ATDC
Valve Lift – Exhaust .................................................................................................... 10.8 mm
Valve Lift – Intake ....................................................................................................... 10.8 mm
Oil Pump
Type........................................................................................................................... ...Gerotor
Gear Diameter – Outer ............................................................................ 87.095 – 87.175 mm
Gear Bore Depth...................................................................................... 15.565 – 15.600 mm
Gear Bore Diameter................................................................................. 87.275 – 87.325 mm
Gear Thickness........................................................................................ 15.511 – 15.536 mm
Gear to Cover Clearance ............................................................................. 0.030 – 0.085 mm
Gear to Housing Clearance ......................................................................... 0.100 – 0.230 mm
Inner Gear Tip Clearance ............................................................................ 0.075 – 0.180 mm
Crankshaft Clearance to Housing ................................................................ 0.040 – 0.130 mm
Inner Gerotor Hub Diameter .................................................................... 53.310 – 53.335 mm
Housing Hub Diameter ............................................................................ 53.380 – 53.420 mm
Inner Gerotor Hub Clearance to Housing .................................................... 0.045 – 0.110 mm
Lubrication System
Oil Type .................................................................................................................. SAE 5 W 30
Oil Capacity – with Filter ................................................................................................... 6. 5 L
Oil Pressure – Minimum at idle ......................................................................................69 kPa
Oil Pressure – Minimum at 2000 r.p.m. .......................................................................138 kPa

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–229
Page 6A1–229
NOTE
• Clean any remaining lapping compound from
the valve and seat with solvent and
compressed air prior to final assembly.
• If fitting new valves, do not lap the valves
under any condition.

7 After obtaining the correct valve seat width in the cylinder head, measure the valve stem height, refer to Valve
Stem Height Measurement Pr ocedure in this Section.
8 If the valve stem height is acceptabl e, test the seats for concentricity, refer to Valve-to-Seat Concentricity
Measurement Procedure in this Section.
Valve Stem Height Measurement Procedure
CAUTION
To determine the valve stem height
measurement, measure from the valve
spring seat to the valve spring retainer.
1 Install the valve into the valve guide.
2 Ensure the valve is seated to the valve seat.
3 Install the valve stem oil seal.
4 Install the valve spring retainer and valve stem keys.
5 Measure the distance (1 ) between the cylinder head
to the bottom of the valve spring retainer, refer to
5 Specifications .
6 If the maximum height spec ification is exceeded, a
new valve should be installed and the valve stem
height re-measured.

Figure 6A1 – 387
CAUTION
Do not grind the valve stem tip. The tip of the
valve is hardened and grinding the tip will
eliminate the hardened surface causing
premature wear and possible engine damage.
CAUTION
Do not use shims to adjust valve stem height.
The use of shims will cause the valve spring
to bottom out before the camshaft lobe is at
peak lift and engine damage could result.
7 If the valve stem height still exceeds the maximum height specification, the cylinder head must be replaced.

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–347
Page 6A1–347
5 Specifications
General
Engine Type .................................................................................................................... .... V6
Bank An gle ..................................................................................................................... .... 60°
Displacement ............................................................................................ 3.6 litre (3,565 cm3)
Bore ........................................................................................................................... .... 94 mm
Stroke ......................................................................................................................... 85.6 mm
Compression Ratio......................................................................................................... 10. 2:1
Cranking Speed at 40 °C .............................................................................................80 r.p.m.
Spark Plug Gap ............................................................................................................ 1.1 mm
Firing Order ............................................................................................................ 1- 2-3-4-5-6
Cylinder Block
Cylinder Bore Diame ter ........................................................................... 93.992 – 94.008 mm
Cylinder Out-of-Round – Pr oduction Maximum ........................................................ 0.013 mm
Crankshaft Main bearing bor e Diameter .................................................. 72. 867 – 72.881 mm
Cylinder Head Deck Surf ace Flatness ........................................................................ 0. 05 mm
Crankshaft
Connecting Rod Journal Diameter........................................................... 55. 992 – 56.008 mm
Connecting Rod Journa l Out-of-Round..................................................................... 0.005 mm
Connecting Rod Jour nal Taper................................................................................ .0. 005 mm
Connecting Rod Journal Width (Production)........................................................... 22.000 mm
Connecting Rod Journal Width (Service limit)......................................... 21. 920 – 22.080 mm
Crankshaft End Pl ay .................................................................................... 0.100 – 0.330 mm
Crankshaft Main Bearing Clearance ............................................................ 0.010 – 0.060 mm
Crankshaft Main Journal Diameter......................................................... .67. 992 – 68.008 mm
Crankshaft Main Journa l Out-of-Round .................................................................... 0.005 mm
Crankshaft Main Journal Taper ............................................................................... .0. 005 mm
Crankshaft Main Journal Width, #2, 4 (Pr oduction)....................................................... 24 mm
Crankshaft Main Journal Width, #2, 4 (Service)...................................... 23. 900 – 24.100 mm
Crankshaft Main Journal Wi dth, #3 (Production) .................................................... 24.400 mm
Crankshaft Main Journal Width, #3 (Service).......................................... 24. 360 – 24.440 mm
Crankshaft Main Journal Thru st Wall Runout.............................................. 0.
000 – 0.040 mm
Crankshaft Main Journal Thru st Wall Square.............................................. 0. 000 – 0.010 mm
Crankshaft Rear Fl ange Runout............................................................................... 0. 025 mm
Crankshaft Reluctor Ring Ru nout - Maximum .......................................................... 1.500 mm
Crankshaft Thrust Bearin g Clearance.......................................................... 0. 076 – 0.305 mm
Crankshaft Thrust Su rface Runout........................................................................... 0. 040 mm
Crankshaft Thrust Surface – Height Diameter ........................................................ 95.000 mm
Connecting Rod
Connecting Rod Length - Bore Centre-to-Centre ................................................. 150.400 mm
Connecting Rod Bore Diameter - Bearing End........................................ 59. 620 – 59.636 mm
Connecting Rod Bore Diamet er - Pin End............................................... 24. 007 – 24.021 mm
Connecting Rod Width ........................................................................................... 21.775 mm
Connecting Rod Side Cl earance.................................................................. 0.095 – 0.355 mm
Connecting Rod Bearing Clearance ............................................................ 0.010 – 0.070 mm

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–348
Page 6A1–348
Piston
Piston Diameter ....................................................................................... 93. 956 – 93.974 mm
Piston Pin Bore Diame ter ........................................................................ 24.005 – 24.009 mm
Piston Ring Groove Width - First (Top) Compression Ring ......................... 1.220 – 1.240 mm
Piston Ring Groove Width - Second Compression Ring.............................. 1. 510 – 1.530 mm
Piston Ring Groove Width - Oil Control Ring ............................................... 2. 510 – 2.530 mm
Piston to Bore Clear ance ............................................................................. 0.026 – 0.052 mm
Piston Pin
Piston Pin Diamet er .................................................................................. 23.997 - 24.000 mm
Piston Pin Length ..................................................................................... 60. 600 – 61.100 mm
Piston Pin Clearance to Connec ting Rod Bore............................................. 0. 007 – 0.024mm
Piston Pin Clearance to Pist on Pin Bore....................................................... 0. 004 – 0.012mm
Piston Rings
Piston Ring to Groove Clearance:
• First (Top) Compression Ring............................................................... 0. 030 – 0.065 mm
• Second Compression Ring ................................................................... 0.015 – 0.060 mm
• Oil Control Ring .................................................................................... 0. 030 – 0.170 mm
Piston Ring End Gap:
• First (Top) Compression Ring............................................................... 0. 150 – 0.300 mm
• Second Compression Ring ................................................................... 0.280 – 0.480 mm
• Oil Control Ring .................................................................................... 0. 150 – 0.600 mm
Cylinder Head
Combustion Chambe r Volume.................................................................................. 53. 600 cc
Valve Guide Bore Diameter – Intake ........................................................... 6.000 – 6.020 mm
Valve Guide Bore Diameter – Exhaust ........................................................ 6.000 – 6.020 mm
Valve Guide Installed Height................................................................... 14. 050 – 14.550 mm
Stationary Hydraulic Lash Adjuster (S HLA) Bore Diameter .....................12.008 – 12.030 mm
Valve Seat Angle – Seating Surface ................................................................................... 45 °
Valve Seat Angle – Relief Surface...................................................................................... 30 °
Valve Seat Angle – Un dercut Surface ................................................................................ 60 °
Valve Seat Runout – Maximum................................................................................ 0. 050 mm
Valve Seat Width – Exhaust S eating Surface.............................................. 1. 400 – 1.800 mm
Valve Seat Width – Exhaust Re lief Surface................................................. 0. 700 – 0.900 mm
Valve Seat Width – Intake Se ating Surface................................................. 1. 000 – 1.400 mm
Valve Seat Width – Intake Relief Surface.................................................... 0. 500 – 0.700 mm
Engine Block Deck Surf ace Flatness .......................................................................... 0. 05 mm
Exhaust Manifold Deck Su rface Flatness ................................................................... 0. 25 mm
Intake Manifold Deck Su rface Flatness ...................................................................... 0. 05 mm
Valve System
Face Angle .................................................................................................................... 4 4.25°
Face Run out ............................................................................................................. 0.038 mm
Valve Face Width – Exhaust..................................................................................... 2. 750 mm
Valve Face Width – Intake........................................................................................ 2. 180 mm
Valve Head Diameter – Ex haust .............................................................. 30.470 – 30.730 mm
Valve Head Diameter – Intake ................................................................. 36. 830 – 37.090 mm
Valve Installed He ight .................................................................................. 35.26 – 36.69 mm
Valve Length – Exhaust.......................................................................................... 97. 110 mm
Valve Length – Intake ........................................................................................... 101.230 mm
Valve Stem Diameter (s tandard).................................................................. 5. 955 – 5.975 mm
Valve Stem Diameter (o versize).................................................................. 6.013 – 6.033 mm
Valve Stem to Guide Clearance................................................................... 0. 025 – 0.065 mm

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ISUZU KB P190 2007