Specifications

GENERAL INFORMATION

Engine (General Data) Designation: SR. Engine code: Multi-point fuel injection engines (single injector): SR20Di. Direct fuel injection engines: - "Phase I" models: SR20DE - "Phase II low-specification" models: SR20De - "Phase II high-specification" models: SR20DE. Displacement: 1998 cm³. Cylinder bore: 86.00 mm. Piston stroke: 86.0 mm. Crankshaft rotation: clockwise (viewed from the right side of the vehicle). Location of No. 1 cylinder: on the timing chain side. Firing order: 1-3-4-2. Compression ratio: 9.8:1. Cylinder compression pressure. Standard value: - SR20Di and SR20De engines: 12.26 kgf/cm². - SR20DE engines: 12.75 kgf/cm². Minimum compression pressure limit: - SR20Di and SR20De engines: 10.30 kgf/cm². - SR20DE engines: 10.79 kgf/cm². Maximum compression difference between cylinders (all engines): 1.0 kgf/cm². Camshaft and hydraulic lash adjusters. Drive: chain. Number of camshaft bearing journals: 5. Camshaft end play: - standard: 0.055 - 0.139 mm. - limit: 0.20 mm. Cam lobe dimensions. Intake valves: - SR20Di and SR20De engines: 37.920 - 38.110 mm. - SR20DE engines: 38.408 - 38.598 mm. Exhaust valves (all engines): 37.920 - 38.110 mm. Camshaft journal diameter: 27.935 - 27.955 mm. Camshaft journal bore inside diameter in cylinder head: 28.000 - 28.021 mm. Camshaft journal clearance: - standard: 0.045 - 0.086 mm. - limit: 0.12 mm. Camshaft runout: - standard: not more than 0.02 mm. - limit: 0.1 mm. Hydraulic lash adjuster outside diameter: 16.980 - 16.993 mm. Lash adjuster bore inside diameter in cylinder head: 17.000 - 17.020 mm. Clearance between lash adjuster and bore: 0.007 - 0.040 mm. Engine lubrication system. Oil pump type: gear type, driven from the crankshaft nose. Minimum oil pressure at operating engine temperature: - at idle: not less than 0.78 kgf/cm². - at 3000 rpm: • SR20Di and SR20De engines: 4.0 kgf/cm². • SR20DE engines: 4.5 kgf/cm². Oil pump clearances: - clearance between driven gear and pump body: 0.11 - 0.20 mm. - gear tooth mesh clearance between drive and driven gears: not more than 0.18 mm. - driven gear end play: 0.05 - 0.11 mm. - drive gear end play: 0.05 - 0.09 mm. - clearance between drive gear shoulder and oil pump cover: 0.045 - 0.091 mm. Tightening torques (N·m). Cylinder head cover nuts: 10. Crankshaft pulley bolt: 147. Timing chain cover bolt: 7. Timing chain tensioner nuts: 8. Crankshaft sprocket bolts: 147. Timing chain guide bolts: 16. Timing chain tensioner shoe pivot bolt: 16. Camshaft bearing cap bolts: Exhaust camshaft rear journal cap bolts: 22. Other cap bolts: 11. Cylinder head bolts: Main bolts: - Step 1: 39. - Step 2: 78. Fully loosen the bolts and retighten to the following torque: - Step 3: 39 ± 5. - Step 4: turn an additional 90-100°. - Step 5: turn an additional 90-100°. M6 bolts: 7. Oil pan nuts and bolts: Cast aluminum alloy section: - numbers 1-16, tighten in the specified sequence: 18. - numbers 17 and 18, tighten in the specified sequence: 7. Stamped steel section: 7. Oil pan drain plug: 35. Engine mount center member bolts: 88. Oil pump: - pump cover screws: 5. - pump cover bolt: 5. - pressure regulator valve bolt: 60. - relief valve bolt: 65. Oil cooler center bolt: 39. Flywheel (drive plate, torque converter) bolts: 88. Rear oil seal retainer bolts: 8. Connecting rod cap nuts: - Step 1: 15. - Step 2 (when tightening with an angle-gauge wrench): turn an additional 60-65°. - Step 2 (when tightening with a torque wrench without angle gauge): 40. Main bearing cap bolts: 50. - Step 1: 35. - Step 2 (when tightening with an angle-gauge wrench): turn an additional 45-50°. - Step 2 (when tightening with a torque wrench without angle gauge): 78. Engine-to-transaxle bolts: - bolts shorter than 45 mm: 19. - bolts longer than 55 mm: 75. Right engine mount components: - bracket-to-engine bolts: 49. - mount-to-bracket bolts: 55. - mount through bolt: 49. Left engine mount components: - mount through bolt: 49. - mount-to-transaxle bolts: 49. Front engine mount components: - bracket-to-engine bolts: 49. - mount-to-center member bolts (wagon models): 55. - mount through bolt: 70. Rear engine mount components: - rear mount-to-center member bolts: 55. - mount through bolt: 79. - mount bracket bolts: 69.