| Engine Type | 90° SOHC V-6 12-Valve |
| Displacement | 3.7 Liters / 3700 cc 226 ( Cubic Inches) |
| Bore | 93.0 mm (3.66 in.) |
| Stroke | 90.8 mm (3.40 in.) |
| Compression Ratio | 9.1:1 |
| Horsepower | 210 BHP@ 5200 RPM |
| Torque | 225 LB-FT @ 4200 RPM |
| Lead Cylinder | #1 Left Bank |
| Firing Order | 1 - 6 - 5 - 4 - 3 - 2 |
| CYLINDER BLOCK |
| Cylinder Block | Cast Iron |
| Bore Diameter | 93.0 ± .0075 mm (3.6619 ± 0.0003 in.) |
| Out of Round (MAX) | 0.076 mm (0.003 in.) |
| Taper (MAX) | 0.051 mm (0.002 in.) |
| PISTONS |
| Material | Aluminum Alloy |
| Diameter | 92.975 mm (3.6605 in.) |
| Weight | 367.5 grams (12.96 oz) |
| Ring Groove Diameter | |
| No. 1 | 83.73 - 83.13 mm (3.296 - 3.273 in.) |
| No. 2 | 82.833 - 83.033 mm (3.261 - 3.310 in.) |
| No. 3 | 83.88 - 84.08 mm (3.302 - 3.310 in.) |
| PISTON PINS |
| Type | Floating |
| Clearance In Piston | 0.006 - 0.015 mm (0.0002 - 0.0005 in.) |
| Diameter | 24.017-24.020 mm (0.9455 - 0.9456 in.) |
| PISTON RINGS |
| Ring Gap | |
| Top Compression Ring | 0.20 - 0.36 mm (0.0079 - 0.0142 in.) |
| Second Compression Ring | 0.37 - 0.63 mm (0.0146 - 0.0249 in.) |
| Oil Control (Steel Rails) | 0.25 - 0.76 mm (0.0099 - 0.30 in.) |
| Side Clearance | |
| Top Compression Ring | .051 - .094 mm (0.0020 - 0.0037 in.) |
| Second Compression Ring | 0.040 - 0.080 mm (0.0016-0.0031 in.) |
| Oil Ring (Steel Ring) | .019 - .229 mm (.0007 - .0091 in.) |
| Ring Width | |
| Top Compression Ring | 1.472 - 1.490 mm (0.057 - 0.058 in.) |
| Second Compression Ring | 1.472 - 1.490 mm (0.057 - 0.058 in.) |
| Oil Ring (Steel Rails) | 0.445 - 0.470 mm (0.017-0.018 in.) |
| CONNECTING RODS |
| Bearing Clearance | 0.015 - 0.055 mm (0.0006 - 0.0022 in.) |
| Side Clearance | 0.10 - 0.35 mm (0.004 - 0.0138 in.) |
| Piston Pin Clearance | .015 - .028 mm (0.0006 - 0.0011 in.) |
| Bearing Bore Out of Round (MAX) | 0.004 mm (0.0002 in.) |
| Total Weight (Less Bearing) | 612 grams (21.588 ounces) |
| CRANKSHAFT |
| Main Bearing Journal | |
| Diameter | 63.488 - 63.512 mm (2.4996 - 2.5005 in.) |
| Bearing Clearance | 0.002 - 0.034 mm |
| Out of Round (MAX) | 0.005 mm (0.0002 in.) |
| Taper (MAX) | 0.006 mm (0.0004 in.) |
| End Play | 0.052 - 0.282 mm (0.0021 - 0.0112 in.) |
| End Play (MAX) | 0.282 mm (0.0112 in) |
| Connecting Rod Journal | |
| Diameter | 57.908 - 57.892 mm |
| Bearing Clearance | 0.015 - 0.055 mm |
| Out of Round (MAX) | 0.005 mm (0.0002 in.) |
| Taper (MAX) | 0.006 mm (0.0002 in.) |
| CAMSHAFT |
| Bore Diameter | 26.02 - 26.04 mm |
| (1.0245 - 1.0252 in.) |
| Bearing Journal Diameter | 25.975 - 25.995 mm (1.0227 - 1.0235 in.) |
| Bearing Clearance | 0.025 - 0.065 mm (0.001 - 0.0026 in.) |
| Bearing Clearance (MAX) | 0.065 mm (0.0026 in.) |
| End Play | .075 - .200 mm (0.003 - 0.0079 in.) |
| End Play (MAX) | .200 mm (0.0079 in.) |
| VALVE TIMING |
| Intake | |
| Opens (ATDC) | 0.0° |
| Closes (ATDC) | 236° |
| Duration | 236° |
| Exhaust | |
| Opens (BTDC) | 233° |
| Closes (ATDC) | 17° |
| Duration | 250° |
| Valve Overlap | 17° |
| VALVES |
| Face Angle | 45° - 45.5° |
| Head Diameter | |
| Intake | 48.52 - 48.78 mm (1.9103 - 1.9205 in.) |
| Exhaust | 36.87 - 37.13 mm 1.4516 - 1.4618 in.) |
| Length (Overall) | |
| Intake | 113.45 - 114.21 mm (4.4666 - 4.4965) |
| Exhaust | 114.92 - 115.68 mm (4.5244 - 4.5543 in.) |
| Stem Diameter | |
| Intake | 6.931 - 6.957 mm (0.2729 - 0.2739 in.) |
| Exhaust | 6.902 - 6.928 mm (0.2717 - 0.2728 in.) |
| Stem - to - Guide Clearance | |
| Intake | 0.018 - 0.069 mm (0.0008 - 0.0028 in.) |
| Exhaust | 0.047 - 0.098 mm (0.0019 - 0.0039 in.) |
| Max. Allowable Stem - to - Guide Clearance (Rocking Method) | |
| Intake | 0.069 mm (0.0028 in.) |
| Exhaust | 0.098 mm (0.0039 in.) |
| Valve Lift (Zero Lash) | |
| Intake | 12.00 mm (0.472 in.) |
| Exhaust | 10.90 mm (0.4292 in.) |
| VALVE SPRING |
| Free Length (Approx) | |
| Intake | 48.92 mm (1.9260 in.) |
| Exhaust | 49.81 mm (1.9610 in.) |
| Spring Force (Valve Closed) | |
| Intake | 361.0 - 390.0 N@ 40.12 mm (81.15-87.67 lbs. @ 1.5795 in.) |
| Exhaust | 390.0 - 430.0 N @ 40.12 mm (87.67 - 96.66 lbs. @ 1.5795 in.) |
| Spring Force (Valve Open) | |
| Intake | 984.0 - 1040.0 N @ 28.12 mm 221.2 - 233.8 lbs. @ 1.107 in.) |
| Exhaust | 965.0- 1055.0 N @ 28.12 mm 216.9 - 237.1 lbs. @ 1.107 in.) |
| Number of Coils | |
| Intake | 7.30 |
| Exhaust | 7.45 |
| Wire Diameter | |
| Intake and Exhaust | 4.77 x 3.80 mm (0.1878 - 0.1496 in.) |
| Installed Height (Spring Seat to Bottom of Retainer) Nominal | |
| Intake | 40.12 mm (1.579 in.) |
| Exhaust | 40.12 mm (1.579 in.) |
| CYLINDER HEAD |
| Gasket Thickness (Compressed) | 0.7 mm (0.0276 in.) |
| Valve Seat Angle | 44.5° - 45.0° |
| Valve Seat Runout (MAX) | 0.051 mm (0.002 in.) |
| Valve Seat Width | |
| Intake | 1.75 - 2.36 mm (0.0698 - 0.0928 in.) |
| Exhaust | 1.71 - 2.32 mm (0.0673 - 0.0911 in.) |
| Guide Bore Diameter (Std.) | 6.975 - 7.00 mm (0.2747 - 0.2756 in.) |
| Cylinder Head Warpage (Flatness) | 0.0508 mm (0.002 in.) |
| OIL PUMP |
| Clearance Over Rotors/End Face (MAX) | 0.095 mm (0.0038 in.) |
| Cover Out - of - Flat (MAX) | 0.025 mm (0.001 in.) |
| Inner and Outer Rotor Thickness | 12.02 mm (0.4731 in.) |
| Outer Rotor to pocket (Diametral) clearance (MAX) | .235 mm (.0093 in.) |
| Outer Rotor Diameter (MIN) | 85.925 mm (0.400 in.) |
| Tip Clearance Between Rotors (MAX) | 0.150 mm (0.006 in.) |
| OIL PRESSURE |
| At Curb Idle Speed (MIN) (1) | 25 kPa (4 psi) |
| @ 3000 rpm | 170 - 758 kPa(25 - 110 psi) |
| CAUTION: (1) If pressure is zero at curb idle, DO NOT run engine at 3000 rpm. |
