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2.4L Turbo Engine

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GENERAL SPECIFICATIONS

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Type In-Line OHV, DOHC
Number of Cylinders 4
Firing Order 1-3-4-2
Compression Ratio 8.6:1
Displacement 2.4 Liters 146.5 cu. in.
Bore 88 mm 3.465 in.
Stroke 97 mm 3.819 in.
Compression Pressure 896 - 1310 Kp 130 - 190 psi
Max. Variation Between Cylinders 25%
CYLINDER BLOCK

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Material Cast Aluminum
Cylinder Bore Diameter 
A 88.000 - 88.010 mm 3.4645 - 3.4649 in.
B 88.010 - 88.020 mm 3.4649 - 3.4653 in.
C 88.020 - 88.030 mm 3.4653 - 3.4657 in.
Cylinder Bore Out-of-Round (Max.) 0.020 mm 0.0008 in.
Cylinder Bore Diameter Taper (Max.) 0.028 mm 0.001 in.
Main Bearing Bore Diameter 
1 56.000 - 56.006 mm 2.2047 - 2.2049 in.
2 56.006 - 56.012 mm 2.2049 - 2.2051 in.
3 56.012 - 56.018 mm 2.2051 - 2.2054 in.
Main Bearing Bore Diameter Taper (Max.) 0.0082 mm 0.0003 in.
PISTONS

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Piston Diameter 
A 87.970 - 88.000 mm 3.4634 - 3.4646 in.
B 87.980 - 88.010 mm 3.4638 - 3.4650 in.
C 87.990 - 88.020 mm 3.4642 - 3.4654 in.
Clearance to Bore 0.000 - 0.040 mm 0.000 - 0.0016 in.
Weight 337.8 - 345.8 grams 11.92 - 12.20 oz.
Land Clearance (Diametrical) 0.559 - 0.700 mm 0.0220 - 0.0276 in.
Piston Length 50.5 mm 1.988 in.
Piston Ring Groove Depth No. 1 3.93 - 4.09 mm 0.1548 - 0.1611 in.
Piston Ring Groove Depth No. 2 3.93 - 4.06 mm 0.1548 - 0.1600 in.
Piston Ring Groove Depth No. 3 2.85 - 3.05 mm 0.1123 - 0.1200 in.
PISTON PINS

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Clearance in Piston 0.004 - 0.014 mm 0.0002 - 0.0006 in.
Clearance in Connecting Rod 0 - 0.023 mm 0 - 0.0009 in.
Diameter 21.997 - 22.000 mm 0.8660 - 0.8661 in.
End Play 0.54 - 1.56 mm 0.021 - 0.061 in.
Length 59.28 - 59.72 mm 2.334 - 2.351 in.
PISTON RINGS

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Ring Gap-Top Compression Ring 0.20 - 0.35 mm 0.0079 - 0.0138 in.
Wear Limit 0.8 mm 0.031 in.
Ring Gap-2nd Compression Ring 0.50 - 0.70 mm 0.0197 - 0.0276 in.
Wear Limit 0.8 mm 0.031 in.
Ring Gap-Oil Control Steel Rails 0.15 - 0.60 mm 0.0059 - 0.0236 in.
Wear Limit 1.0 mm 0.039 in.
Ring Side Clearance-Compression Rings 0.035 - 0.08 mm 0.0014 - 0.0031 in.
Wear Limit 0.1 mm 0.004 in.
Ring Side Clearance-Oil Ring Pack 0.05 - 0.19 mm 0.0020 - 0.0075 in.
Ring Width-Top Compression Ring 2.99 - 3.29 mm 0.1177 - 0.1295 in.
Ring Width-2nd Compression Ring 3.23 - 3.48 mm 0.1272 - 0.1370 in.
Ring Width-Oil Ring Pack 2.45 - 2.65 mm 0.0965 - 0.1043 in.
Ring Thickness-Top Compression Ring 1.175 - 1.19 mm 0.0463 - 0.0469 in.
Ring Thickness-2nd Compression Ring 1.475 - 1.49 mm 0.0581 - 0.0587 in.
Ring Thickness-Oil Ring Pack 1.86 - 1.98 mm 0.0732 - 0.0780 in.
CONNECTING ROD

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Bearing Clearance 0.032 - 0.060 mm 0.0012 - 0.0023 in.
Wear Limit 0.070 mm 0.0027 in.
Bore Diameter-Piston Pin 22.016 - 22.024 mm 0.86687 - 0.8671 in.
Bore Diameter-Crankshaft End 51.003 - 51.015 mm 2.0080 - 2.0085 in.
Side Clearance 0.1 - 0.25 mm 0.0039 - 0.00098 in.
Wear Limit 0.27 mm 0.0106 in.
Weight-Total (Less Bearing) 571 grams 20.14 oz.
CRANKSHAFT

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Connecting Rod Journal Diameter 
Journal Grade 
1 47.966 - 47.972 mm 1.8884 - 1.8886 in.
2 47.960 - 47.966 mm 1.8884 - 1.8881 in.
3 47.954 - 47.960 mm 1.8879 - 1.8881 in.
Rod Journal- Taper (Max) 0.005 mm 0.0001 in.
Main Bearing Journal Diameter 
Journal Grade 
0 51.985 - 51.988 mm 2.0466 - 2.0467 in.
1 51.982 - 51.985 mm 2.0465 - 2.0466 in.
2 51.979 - 51.982 mm 2.0464 - 2.0465 in.
3 51.976 - 51.979 mm 2.0462 - 2.0464 in.
4 51.973 - 51.976 mm 2.0461 - 2.0462 in.
Journal Out-of-Round (Max.) 0.005 mm 0.0001 in.
Journal Taper (Max.) 0.006 mm 0.0002 in.
End Play 0.05 - 0.25 mm 0.0019 - 0.0098 in.
Wear Limit 0.30 mm 0.0118 in.
Main Bearing Diametrical Clearance 0.028 - 0.048 mm 0.0011 - 0.0018 in.
Main Bearing Diametrical Clearance (Max) 0.058 mm 0.0022 in.
CYLINDER HEAD CAMSHAFT BEARING BORE DIAMETER

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Cam Bearing Bore 
Front Intake 30.000 - 30.021 mm 1.1810 - 1.1819 in.
Front Exhaust 40.000 - 40.024 mm 1.5747 - 1.5756 in.
Cam Bearing Bore No. 1-4 24.000 - 24.021 mm 0.9448 - 0.9457 in.
CAMSHAFT

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Cam Journal Diameter 
Front Intake Cam 29.964 - 29.980 mm 1.1797 - 1.1803 in.
Front Exhaust Cam 35.984 - 36.000 mm 1.4166 - 1.4173 in.
Cam Journal Diameter No. 1-4 23.954 - 23.970 mm 0.943 - 0.944 in.
Bearing Clearance - Diametrical 
Front Intake Journal 0.020 - 0.057 mm 0.0008 - 0.0022 in.
Front Exhaust Journal 0.019 - 0.051 mm 0.0007 - 0.0020 in.
All Others 0.020 - 0.067 mm 0.0008 - 0.0026 in.
End Play 0.11 - 0.25 mm 0.004 - 0.009 in.
Max Lift @ 0.2 mm (0.007 in.) lash 
Intake 9.2 mm 0.362 in.
Max Lift @ 0.28 mm (0.011 in.) lash 
Exhaust 8.42 mm 0.331 in.
Intake Valve Timing w/ VVT in lock-pin position* 
Closes (ABDC) 49.3°
Opens (ATDC) 10.3°
Duration 219°
Exhaust Valve Timing w/ VVT in lock-pin position* 
Closes (BTDC) 8.45°
Opens (BBDC) 45°
Duration 216.55°
Valve Overlap @ 0.5 mm (0.019 in.) w/ VVT in lock-pin position 18.75°
*  All reading in crankshaft degrees at 0.5 mm (0.019 in.) valve lift.
CYLINDER HEAD

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Material Cast Aluminum - Heat treated
Gasket Thickness (Compressed) 0.80 mm 0.031 in.
Valve Tappet Bore I.D. 32.000 - 32.025 mm 1.2598 - 1.2608 in.
Valve Tappet O.D. 31.964 - 31.980 mm 1.2584 - 1.2590 in.
VALVE SEAT

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Angle 44.75° - 45.10°
Seat Outer Diameter - Intake 34.45 - 34.61 mm 1.3562 - 1.3625 in.
Seat Outer Diameter - Exhaust 28.04 - 28.20 mm 1.1039 - 1.1102 in.
Runout (Max.) 0.05 mm 0.002 in.
Valve Seat Width 
Intake 1.16 - 1.46 mm 0.0456 - 0.0574 in.
Service Limit 2.0 mm 0.079 in.
Exhaust 1.35 - 1.65 mm 0.0531 - 0.0649 in.
Service Limit 2.5 mm 0.098 in.
VALVE GUIDE

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Diameter I.D. 5.500 - 5.512 mm 0.2165 - 0.2170 in.
Guide Bore Diameter 10.983 - 11.001 mm 0.432 - 0.4331 in.
Guide Height (spring seat to guide tip) 14.6 - 15.2 mm 0.5748 - 0.5984 in.
VALVES

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Face Angle - Intake and Exhaust 45.25° - 45.75°
Head Diameter - Intake 34.9 - 35.1 mm 1.374 - 1.3818 in.
Head Diameter - Exhaust 28.9 - 29.1 mm 1.1377 - 1.1456 in.
Valve Lash 
Intake 0.17 - 0.23 mm 0.006 - 0.009 in.
Exhaust 0.27 - 0.33 mm 0.010 - 0.012 in.
Valve Length (Overall) 
Intake 113.18 mm 4.455 in.
Exhaust 105.887 mm 4.168 in.
Valve Stem Diameter 
Intake 5.465 - 5.480 mm 0.2151 - 0.2157 in.
Exhaust 5.458 - 5.470 mm 0.2148 - 0.2153 in.
VALVE MARGIN

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Intake 0.672 mm 0.0264 in.
Exhaust 0.744 mm 0.02929 in.
VALVE STEM TIP

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Intake 48.04 mm 1.891 in.
Exhaust 47.99 mm 1.889 in.
VALVE STEM TO GUIDE CLEARANCE

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Intake 0.020 - 0.053 mm 0.0008 - 0.0021 in.
Max. Allowable 0.076 mm 0.003 in.
Exhaust 0.030 - 0.060 mm 0.0012 - 0.0024 in.
Max. Allowable 0.101 mm 0.004 in.
VALVE SPRINGS

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Free Length (Approx.) 47.0 mm 1.850 in.
Nominal Force (Valve Closed) 179.5 N ± 9 @ 35.0 mm 40.35 lbs. @ 1.38 in.
Nominal Force (Valve Open) 364.8 N ± 17 N @ 29.25 mm 82.01 lbs. ± 3.82 lbs. @ 1.152 in.
Installed Height 35.00 mm 1.378 in.
Number of Coils 8.5 ± 0.1
Wire Diameter 2.90 mm ± 0.03 0.114 in ± 0.001 in.
OIL PRESSURE

DESCRIPTION  SPECIFICATION 
Metric  Standard 
At Curb Idle Speed* 25 kPa 4 psi min.
At 3000 RPM 170 - 550 kPa 25 - 80 psi
CAUTION: *If pressure is ZERO at curb idle, DO NOT run engine at 3000 RPM.
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