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Honda Accord Civic,, Prelude Civic, Engine Instruction manual 9 Pages
Honda Accord Civic,, Prelude Civic, Engine Instruction manual
The Honda Accord Civic, Prelude Civic, Accord and Prelude engines are 4-cylinder engines designed for a variety of applications. This manual provides detailed instructions on how to remove, inspect, repair, and install these engines. It also covers important procedures such as valve timing, piston ring installation, and crankshaft bearing replacement. This manual is a valuable resource for mechanics and individuals who are familiar with automotive repair and maintenance.
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6-142 Honda Engines ACCORD, CIVIC & PRELUDE 4-CYLINDER ENGINE CODING ENGINE IDENTIFICATION Engine serial number is stamped on a ma- chined pad. Pad is located on firewall side of engine near the transaxle. Serial number is preceded by engine model number. ENGINE IDENTIFICATION Application Code Civic 1335 CC caine eee eee eas EJ1 1487 CC ............e.eeocrcccacecareoooorarereo eee e nana ann anne EM1 Accord & Prelude (1751 CC) ............ einen ene eres EK1 ENGINE, CYLINDER HEAD & MANIFOLDS ENGINE Removal 1) Remove battery cables, battery, and mount- ing tray. Remove headlight trim, front bumper apron and grille, to gain access to hood brackets. Remove hood. 2) Drain engine oil from crankcase. Drain coolant from radiator and engine. Engine drain plug is located below No. 2 spark plug. Drain gear oil from transaxle. 3) Remove air cleaner and related hoses and ducting. Label and disconnect all vacuum, ventilation and air hoses between engine and chassis. 4) Label and disconnect all electrical wiring between engine and chassis. Disconnect fuel hoses at fuel filter. Disconnect throttle cable from carburetor. 5) Remove radiator hoses and heater hoses from engine. If equipped, detach EGR control box and let hang next to engine. Remove alternator. If A/C equpped, remove compressor (with hoses connected) and bracket, and secure away from engine. 6) On manual transaxle models, remove clutch slave cylinder with hydraulic line attached. On automatic transaxle models, remove oil cooling lines. Remove cable clip and pull speedometer cable out of cable holder. DO NOT remove cable holder. 7) Remove anti-afterburn valve. If equipped, remove power steering pump and bracket. Place front of vehicle on jack stands and remove front wheels. 8) On Prelude models, remove engine guards and stabilizer bar. Disconnect both lower ball joints and tie rod ends. Remove right and left axles. 9) On vehicles with automatic transaxle, re- move shift console, indicator, shift cables, and housing. On manual transaxle models, disconnect shift rod clevis and torque rod. Disconnect exhaust pipes. 10) Attach lifting device and raise engine enough to relieve load on engine mounts. Remove engine support bolts, and push left engine support (timing belt side of engine) into shock mount bracket. 11) Remove front and rear engine mounts and torque rods. Carefully lift engine/transaxle assembly out of vehicle, ensuring all wires and hoses are detached. Installation Install engine in reverse order of removal. When replacing axles, insert shaft until spring clip “clicks” into groove in differential side gear. Make sure all control cables are adjusted properly. CYLINDER HEAD Removal 1) Disconnect negative cable from battery. Drain cooling system. Remove air cleaner and related hoses and ducting. Label and disconnect all electrical wiring to cylinder head. 2) Disconnect lines, vacuum hoses and throttle cable from carburetor, then remove carburetor. Remove wiring and vacuum hoses from distributor. Remove coolant hoses from cylinder head. 3) Remove header pipe from exhaust manifold. If equipped with power steering, remove power steering pump and set aside. On vehicles without A/C, remove bolt securing alternator bracket to cylinder head, and loosen alternator adjusting bolt. 4) If A/C equipped, remove compressor (with hoses connected) and secure away away from engine. Remove compressor bracket. Remove cam cover and timing belt upper cover. 5) Bring No. 1 piston to TDC at end of compression stroke. Loosen timing belt pivot and adjust- ing bolts, then slip timing belt off camshaft sprocket. 6) Remove oil pump gear cover and pull oil pump shaft out of cylinder head. Remove cylinder head bolts in reverse of tightening sequence by turning 1/3 turn at a time until all bolts are loosened. Remove cylinder head. Installation 1) Ensure that all mating surfaces are clean and free of cracks. Ensure No. 1 piston is still on TDC. Time valves by aligning camshaft sprocket timing marks. See Figs. 3 and 4. 2) Using new head gasket, install and tighten head bolts in 2 steps. See Fig. 1. To complete installation, reverse removal procedure. Fig. 1: Cylinder Head Tightening Sequence ® e ® NN — — ‹ — © o @ FRONT OF VEHICLE Timing Belt Sprocket = D e o НН D ® © @® O) Tighten head bolts to 22 ft. Ibs. (30 N.m), then further tighten to 44 ft. Ibs. (60 N.m). MANIFOLDS Removal Disconnect exhaust head pipe from manifold. Loosen 4 intake-to-exhaust manifold bolts. Remove Copyright (c) 2003 Mitchell Repair Information Company Honda Engines 6-143 ACCORD, CIVIC & PRELUDE 4-CYLINDER (Cont.) manifold-to-head mounting nuts in reverse order of tightening sequence. Remove and disassemble manifolds. Installation 1) Use new gaskets between manifolds and heat shield. Tighten the bolts holding manifolds together finger tight. Place new gasket in position on cylinder head. 2) Note that spring washers used with special nuts must be installed with dished surface facing inward. Install and tighten manifolds. See Fig. 2. Tighten exhaust manifold-to-intake manifold bolts. Fig. 2: Manifold Tightening Sequence ® (0 Tighten manifolds-to-cylinder head nuts and bolts securing manifolds together, to 16 ft. Ibs (22 N.m). ® © Y CAMSHAFT TIMING BELT Removal 1) Turn crankshaft to position No. 1 piston on TDC at end of compression stroke. Ensure valve timing marks are aligned. See Figs. 3 and 4. 2) Remove all drive belts from pulleys. Remove water pump pulley and crankshaft pulley. Remove upper timing belt cover from cylinder head and remove lower timing belt cover from engine block. 3) Loosen timing belt tensioner to relieve tension on timing belt. If same timing belt is to be reused, mark direction of belt rotation before removing. Slide belt off sprockets. CAUTION: Never expose timing belt to oil or grease, as this will cause belt deterioration. Installation 1) Ensure crankshaft and camshaft positions have not changed. Install timing belt onto sprockets, using care not to excessively bend or twist belt. 2) With tensioner adjusting and pivot bolts loosened, rotate crankshaft counterclockwise 1/4 turn to create tension on belt. 3) Tighten tensioner adjusting bolt (lower bolt) first, then tighten pivot bolt (upper bolt). Reverse removal procedures to complete installation. VALVE TIMING Rotate crankshaft untii TDC mark on flywheel or driveplate is aligned with index mark. If valve timing is correct, camshaft timing marks will be aligned as illus- trated. See Figs. 3 and 4. Timing belt removal and installation procedures are explained in Timing Belt. Fig. 3: Positioning Camshaft Timing Marks for Accord and Prelude (1751 cc engine) Camshaft Sprocket “UP” Mark Fig. 4: Positioning Camshaft Timing Marks for Civic (1335 & 1487 cc engines) Notched Cutout Notched Cutout Timing Mark 1335 cc 1487 cc CAMSHAFT Removal 1) Turn crankshaft to position No. 1 piston on TDC at end of compression stroke. Ensure camshaft timing marks are aligned. See Figs. 3 and 4. 2) Remove timing belt covers. Loosen belt tensioner to relieve tension on timing belt. Remove timing belt from camshaft sprocket. Remove camshaft sprocket. 3) Starting at ends and working towards middle, loosen rocker arm bolts 2 turns at a time in a criss-cross pattern until fully loosened. Remove rocker assembly from head. Lift camshaft from cylinder head. Installation 1) Oil camshaft journals and bearing surfaces in caps and cylinder head. Install camshaft with keyway pointing upward (No. 1 piston at TDC). Install rocker arm assembly. 2) Starting with bolts at middle of rocker arm assembly and working outward in a circular pattern, tighten all bolts to first specification, then tighten 8 mm bolts only, to final specification. 3) Install remaining components in reverse order of removal. Before installing cam cover gasket, apply non-hardening sealant to upper rounded surface of front and rear camshaft caps. Copyright (c) 2003 Mitchell Repair Information Company 6-144 Honda Engines ACCORD, CIVIC & PRELUDE 4-CYLINDER (Cont.) CAMSHAFT OIL SEAL Removal Using procedures explained in Camshaft re- moval, remove camshaft sprocket from camshaft. Pry oil seal from recess in camshaft cap. Installation Using seal installing tool, drive in camshaft seal until tool bottoms. Install remaining components in reverse order of removal. CAMSHAFT END THRUST 1) Attach dial indicator to front end of cylinder head with indicator point on distributor drive gear. Pry camshaft rearward. Zero dial indicator. 2) Pry camshaft forward and record end thrust. Desired end thrust is .002-.006" (.05-.15 mm). Maximum allowable end thrust is .02” (.5 mm). VALVES VALVE ARRANGEMENT Civic I-E-E-I-I-E-E-| (Rear side, left-to-right). Auxiliary intake valves (Front side) Accord & Prelude E-I-E-I-I-E-I-E (Rear side, left-to-right) Auxiliary intake valves (Front side) ROCKER ARM ASSEMBLY Removal Remove cam cover. Loosen rocker arm shaft bolts in crisscross pattern starting with end caps and working inward. To disassemble, pull out roll pins in end caps. Keep parts in order for reassembly. Installation If shafts were disassembled, reassemble in reverse order of disassembly. Install rocker arm assembly on engine. Tighten support bolts in a circular pattern, starting with center support bolts and working outward. VALVE GUIDE SERVICING Inspection Disassemble cylinder head. Measure inside diameter of valve guide and outside diameter of valve stem to determine stem-to-guide clearance. If clearance is excessive, replace guides and install new valves. Removal Heat cylinder head to 300°F (150°C). Using a valve guide driver tool, drive out guide from combustion chamber side of head. Installation Install new guides from top of head with driver and adapter tool (07943-SA50000). Drive guide in until adapter bottoms on head. Ream valve guides to provide proper clearance. VALVE SPRINGS Removal Remove cylinder head from engine. Using valve spring compressor, remove valve keepers, retainer and springs. Keep parts in order for later installation. inspection Using a steel square and flat surface, check valve springs for squareness. Measure free length of valve springs. Using valve spring tension tester, measure spring tension. Installation Install in reverse of removal procedure. Install springs with closely wound coil end towards spring seat. Check valve spring installed height, and adjust as necessary. VALVE SPRING INSTALLED HEIGHT SPECIFICATIONS Measurement Application In. (mm) Auxiliary Valve Spring .........................ee. eee... .98 (25.0) Intake & Exhaust Inner Valve Spring ere 1.40 (35.6) Outer Valve Spring o.oo eee 1.49 (37.8) VALVE STEM OIL SEALS When replacing valve stem oil seals, note that seals for intake valves have a white spring. Oil seals for exhaust valves have a black spring. AUXILIARY INTAKE VALVES 1) Remove auxiliary valve holder nut using special “T” wrench (07907-6570001). Remove valve holder assembly using slide hammer tool (07741-0010100). Auxiliary chamber collar may be removed with a slide hammer type puller. 2) Compress spring and remove keepers. Disassemble and inspect valve assembly. Valve seat may be reconditioned, however entire assembly should be replaced if any component exceeds service limit. 3) Install chamber in each auxiliary valve hole with 2 new gaskets. Insert alignment tool (07944-6590000) in spark plug hole to center the chamber. 4) Install new “O” ring on auxiliary valve assembly, then install in chamber. Using “T” wrench used for removal, tighten holder nut. VALVE CLEARANCE ADJUSTMENT 1) Adjust valves with engine cold. Remove cam cover. Rotate crankshaft so that No. 1 piston is on TDC at end of compression stroke. Adjust valve clearances on No. 1 cylinder. 2) Rotate crankshaft counterclockwise 180° so that No. 3 piston is on TDC at end of compression stroke. Adjust valve clearances on No. 3 cylinder. 3) Rotate crankshaft counterclockwise 180° and adjust valve clearances on No. 4 cylinder. Rotate crankshaft counterclockwise 180° and adjust valve clear- ances on No. 2 cylinder. VALVE CLEARANCE SPECIFICATIONS Clearance Application In. (mm) 1335 cc and 1487 cc Intake and Auxiliary ...................... .005-.007 (.12-.17) Exhaust ...............e.eeeceerecerecencenenee .007-.009 (.17-.22) 1751 cc Intake and Auxiliary ...................... .005-.007 (.12-.17) Exhaust ............e.ee...eeecesncecrcenceneno. .010-.012 (.25-.30) Copyright (c) 2003 Mitchell Repair Information Company 6-145 Honda Engines ACCORD, CIVIC & PRELUDE 4-CYLINDER (Cont.) PISTONS, PINS & RINGS PISTON & ROD ASSEMBLY Removal 1) With oil pan and cylinder head removed, remove any ridge from top of cylinder bore. Mark connecting rod and cap for cylinder identification. NOTE: Do NOT confuse number stamped on con- necting rod and cap with number indicating position of assembly in engine. This number indicates rod big end bore size only. 2) Remove rod cap. Push piston and rod assembly out top of cylinder block. Install cap on rod from which removed. Installation 1) Lubricate piston, rings and cylinder bore with engine oil. Install piston rings and properly space end gaps on piston. See Fig. 5. 2) Install piston and rod into cylinder bore. When properly installed, mark on piston head and oil hole in connecting rod will be positioned toward manifold side. See Fig. 6. Install and tighten rod cap. Fig. 5: Piston Ring End Gaps / 5 Spacer Gap / A 150 \ Oil Ring Gap No Ring Gaps Here === === = == тете No Ring Gaps == = = = = = = = = - = -- in Line With Piston Pin 90° 2nd Ring Gap (“2R" Marking Up) y Top compression ring is identified by two 30° chamfers on outer edge. Fig. 6: Piston-to-Connecting Rod Relationship FITTING PISTONS 1) Measure cylinder bore for out-of-round and taper. If out-of-round exceeds .002” (.05 mm) or taper exceeds .004” (.10 mm), rebore cylinder for oversize pistons. 2) Determine piston-to-cylinder bore clearance. If not within specifications, rebore cylinder and install oversize pistons. 3) Oversize pistons are available in diameters of 2.843" (72.21 mm) for 1335 cc engines, 2.927” (74.35 mm) for 1487 cc engines and 3.040” (77.22 mm) for 1751 cc engines. FITTING RINGS 1) Push a ring into cylinder bore approximately 3/4” from bottom of bore. Ring must be square in bore. Using a feeler gauge, measure ring end gap. Compare measurement with specifications. 2) Install rings onto piston. Both compression rings are chamfered. Note that top compression ring has two 30° chamfers on outer edge. Second compression ring’s outer edge is slightly chamfered. 3) Using a feeler gauge, measure ring side clearance between ring and ring land. If ring lands have high steps or are excessively worn, replace piston. 4) Properly space ring end gaps on piston. See Fig. 5. Make sure no end gaps are in line with piston pin or thrust face of piston. Install rings with manufacturer's marking facing upward. PISTON PIN REPLACEMENT Removal Using a hydraulic press and piston pin remov- er/installer tool set, remove piston pin from piston and connecting rod. Installation 1) Assemble connecting rod to piston with oil hole in rod and correct marking on piston head on same side. Note that some pistons have two markings on the piston head. See Fig. 6. 2) Lightly lubricate new piston pin with engine oil. Using piston pin installing tool set, press new pin into piston and connecting rod until pin is centered in rod. ONE MARK Oil Hole 2 MARKS SAME SIDE 2 MARKS OPPOSITE SIDES E Oil Hole De Oil Hole Oil hole in connecting rod allows lubrication to thrust side of cylinder wall and piston. Copyright (c) 2003 Mitchell Repair Information Company 6-146 Honda Engines ACCORD, CIVIC & PRELUDE 4-CYLINDER (Cont.) CRANKSHAFT MAIN & CONNECTING ROD BEARINGS CAUTION: Replace crankshaft if journals are worn. DO NOT regrind crankshaft, as bearing journals are specially heat-treated. CRANKSHAFT MAIN BEARINGS 1) Prior to disassembly, ensure main bearing caps are marked for identification, for reassembly in their original positions. 2) Using Plastigage method, check bearing clearances. Ensure oil film is wiped from surfaces to be checked. 3) A code indicating cylinder block bore size for each main journal is stamped into the cylinder block. See Figs. 7 and 8. Crankshaft main journal sizes are coded, and stamped into the crankshaft. See Fig. 9. Use these codes to obtain correct replacement bearings. Fig. 7: Location of Size Code for Main Journal Bore (1751 cc and 1487 Engines) | ANZ uu Crankshaft Bore 7 Identification Code 7 (Numbers or Roman Numerals) Rear Flange O of Block uu ( — — Flywheel End Fig. 9: Crankshaft Main & Rod Journals Identification Codes Fig. 8: Location of Size Code for Main Journal Bore (1335 cc Engine) Letter Codes For Each Main Bearing Bore Crankshaft Main Bearing Bore Sequence 4) With crankshaft removed from engine, measure for bend, out-of-round and taper. If any mea- surement exceeds specifications in Crankshaft Wear Specifications table, replace crankshaft. CRANKSHAFT WEAR SPECIFICATIONS Standard Service Limit Application In. (mm) In. (mm) Runout ..................... .0012 (.030) ......... .0024 (.060) Taper ...................._.. .0002 (.005) ......... .0004 (.010) Out-of-Round .......... .0002 (.005) ......... .0004 (.010) Connecting Rod Journal Codes (Letters) y Connecting Rod Size Code (Numbers) Color Coded Identification Copyright (c) 2003 Mitchell Repair Information Company Honda Engines 6-147 ACCORD, CIVIC & PRELUDE 4-CYLINDER (Cont.) CONNECTING ROD BEARINGS 1) Prior to disassembly, ensure main bearing caps are marked for reassembly in their original positions. Also, check connecting rod side play. 2) Using Plastigage method, check bearing clearances. Ensure oil film is wiped from surfaces to be checked. 3) A code is stamped on each connecting rod and cap, indicating bore size of rod’s big end. Crankshaft rod journals size codes are stamped on crankshaft counterweight pads. See Fig. 8. Use both codes to obtain correct replacement bearings. CRANKSHAFT END THRUST 1) Attach a dial indicator to engine with indicator point on end of crankshaft. Push crankshaft away from dial indicator and zero dial indicator. 2) Firmly pull crankshaft towards dial indicator and record measurement. If not within specification, inspect thrust washers and thrust surface of crankshaft. 3) Replace worn parts as necessary. Thrust washer thickness is fixed. Do not change thrust washer thickness by grinding or shimming. REAR MAIN BEARING OIL SEAL 1) When replacing oil seal, be sure seal bore in cap is dry. Apply non-hardening sealant to inside of seal bore, at cap-to-block parting line. 2) Coat crankshaft and seal lip with engine oil. Install seal with part number side facing outward. Drive in seal until it bottoms against block. Fig. 10: Disassembled View of Oil Pump Assemblies FRONT MAIN BEARING OIL SEAL To replace front main bearing oil seal, use procedures set forth in Rear Main Bearing Oil Seal. ENGINE OILING Oil pump is driven off camshaft. If pump driven gear is damaged, most likely camshaft drive gear is damaged. In this case, both camshaft and oil pump driven gear must be replaced. CRANKCASE CAPACITY Crankcase capacity is 3.2 quarts (3.0L) without oil filter replacement; 3.7 quarts (3.5L) when replacing oil filter. NOTE: NORMAL OIL PRESSURE For all models, minimum oil pressure at idle should be 21 psi (1.45 kg/cm?). For Civic models, oil pressure at 3000 RPM should be 48-60 psi (3.4-4.2 kg/cm?). For Accord and Prelude models, oil pressure at 3000 RPM should be 54-65 psi (3.8-4.6 kg/cm”). ENGINE OILING SYSTEM A rotor type oil pump draws oil from oil pan and delivers it under pressure to main and connecting rod bearings. An oil hole in each connecting rod lubricates thrust side of piston and cylinder wall. An oil passage Gear Cover Dowel Pin =—3=3 © Gear AA Lock Pin == Pump Housing 1 «——— Quter Rotor +, _ ; Le Inner Rotor ? Gasket ‘7 1 Pump Cover (=) Relief Valve Assembly “SZ > Screen Cotter Pin Manual Transmission Ÿ a Gear Cover Dowel Pin ~~ E ly | Pump Housing LOCK Pin emg Shaft — Upper Rotors I Y Lock Pin Pump Shaft = | / Dowel Pin pa” Cot" Pin | Y el Gasket < и SS Relief Valve 173$ Housing Relief Valve Assembly Lower Rotors Relief Valve | Assembly A Cotter Pin Gasket Pump cover de Screen Automatic Transmission Oil pumps for 1751 cc engine shown, other engines similar. Copyright (c) 2003 Mitchell Repair Information Company 6-148 Honda Engines ACCORD, CIVIC & PRELUDE 4-CYLINDER (Cont.) carries oil to camshaft bearings and rocker arms. Oil spray lubricates valve stems. OIL PUMP Removal & Disassembly 1) Remove oil pan. Remove oil pump assembly from engine. Remove bolts securing pump cover to pump body. Before removing pump cover, note the following: 2) Oil pumps on some models (equipped with automatic transmission) have 2 sets of pump rotors. On all models, mark installed position(s) of rotors to ensure they will be installed in their original rotor-to-rotor relation. 3) Disassemble oil pump. To remove relief valve and related components, remove cotter pin from pump cover (or relief valve body). See Fig. 10. Inspection 1) Thoroughly clean all parts. Inspect all parts for wear or damage. On pumps with 2 sets of rotors and relief valve assemblies, inspection procedures and specifi- cations apply to both sets. 2) With rotors installed in housing, use a feeler gauge to check clearance between inner rotor lobe and outer rotor. Compare measurement with specifications. 3) With rotors installed in housing, use a feeler gauge to check clearance between outer rotor and housing. Compare measurement with specifications. 4) Place rotors in housing. Lay housing gasket over housing and lay a straightedge over gasket. Insert a feeler gauge between straightedge and rotor assembly to measure rotors end play. Compare measurement with specifications. 5) Check fit of relief valve in its bore. Valve must slide freely in bore. If valve is scored, replace it. Check free length of relief valve spring. OIL PUMP SPECIFICATIONS Standard Service Limit Application In. (mm) In. (mm) Rotor Lobe Clearance ................ 002-.006 ....................... .008 (.04-.14) ...............eeem..... (.20) Outer Rotor to Housing ............... .004-.007 ..............e.. a... .008 (.10-.18) unes (.20) Rotor End Play .......... 001-004 ....................... .006 (.03-.10) cei, (.15) Spring Free Length ... 2.00-2.10 ....................... 2.00 (50.8-53.3) .............. (50.8) ENGINE COOLING THERMOSTAT Thermostat begins opening about 176-183°F (80-84°C) and is fully open at 203°F (95°C). COOLING FAN THERMOSWITCH At temperatures of 191-197°F, thermoswitch actuates cooling fan. COOLANT CAPACITY Civic Refill capacity (including reserve tank) for models with 1335 cc engine is 4.0 quarts (3.8L). For models with 1487 cc engine, refill capacity is 4.9 quarts (4.6L). Accord & Prelude Refill capacity (excluding reserve tank is 5.8 quarts (5.5L). WATER PUMP Removal Drain radiator and loosen alternator adjusting bolts. Push alternator toward engine and remove drive belt. Remove water pump and “O” ring seal. Installation 1) Reinstall water pump. Loosen cooling system bleed valve located on thermostat housing. Fill radiator with coolant. When air bubbles no longer appear in coolant, close valve. 2) Start engine. Set heater temperature control lever to high position. Run engine about 10 minutes, then open bleed valve again. Allow coolant to drain from bleed valve until air bubbles disappear, then close valve. Refill radiator. TIGHTENING SPECIFICATIONS Reassembly & Installation 1) Using new gaskets as necessary, reassem- ble pump in reverse order of disassembly. Make sure rotors are installed in their original positions. 2) Place oil pickup in container of oil and operate pump with screwdriver to prime pump. Place finger over outlet hole and check that pressure is created as pump is turned. 3) Install oil pump in reverse order of removal procedures. Application Ft. Lbs. (N.m) Camshaft Sprocket ............................reeeeceeeeeeeee 22 (30) Connecting Rod ..…....................……...….…......…ereecccrres 21 (28) 1751 cc Engine o.oo, 23 (31) Cylinder Head ..............…..….........…ercccccccrseneeneese 44 (60) Drive Plate 1335 cc & 1487 cC Engines ............................. 36 (49) 1751 cc Engine ooo, 54 (73) Flywheel 1335 cc á 1487 cc Engines ........................—.... 51 (69) 1751 cc Engine .….........…....….........…....….….rersrrensores 76 (103) Intake-to-Exhaust Manifold BoltS ..................... 16 (22) Main Bearing Bolts 1335 cc Engine eee, 29 (39) 1487 cc Engine coven a 32 (43) 1751 cc Engine ..........................iecceeeme ene. 48 (65) Manifold Nuts .........................eeeecrcccreceen e e 16 (22) Rocker Arm Support 6 mM Bolts eee 9 (12) 8 mm BOIS eco nece. 16 (22) Timing Belt Adjustment Bolt 1335cc & 1487 cc Engines essen 32 (44) 1751 cc Engine eevee 22 (30) Timing Belt Pivot Bolt 1335 cc 6 1487 cc Engines ............................ 32 (44) 1751 cc Engine ...................eeeeermeveenacerreeee nee. 22 (30) Copyright (c) 2003 Mitchell Repair Information Company Honda Engines 6-149 ACCORD, CIVIC & PRELUDE 4-CYLINDER (Cont.) ENGINE SPECIFICATIONS GENERAL SPECIFICATIONS isplace Bore Stroke Displacement Torque Compr. Year Cu. In. cc Fuel System HP@RPM Ft. Lbs. @RPM Ratio In. mm mm 1982 Civic 1300 81 1335 1х 3-ВЫ. | ..... | eee 9.3:1 2.83 72.0 3.23 82.0 Civic 1500 91 1487 1х 3-ВЫ. | .... | ... 9.3:1 2.91 74.0 3.41 86.5 Accord & Prelude 107 1751 1х 3-ВЫ. | .... | Lee 8.8:1 3.03 77.0 3.70 94.0 VALVES Head Seat Stem Stem Valve Engine Size Diam. Face Seat Width Diameter Clearance Lift & Valve In. (mm) Angle Angle In. (mm) In. (mm) In. (mm) in. (mm) 1335 cc & 1487 cc Intake 1.366-1.374 45° 45° .049-.061 .2591-.2594 .0008-.0020 | .... (34.70-34.90) (1.25-1.55) (6.580-6.590) (.020-.050) Exhaust 1.098-1.106 45° 45° .049-.061 2574-2578 .0025-.0037 | .... (27.90-28.10) (1.25-1.55) (6.537-6.547) (.063-.093) Auxiliary .469-.476 45° 45° .014-.019 ‚2587-.2593 .0009-.0023 | .... 1751 (11.90-12.10) (.35-.49) (6.572-6.587) (.023-.058) cc Intake 1.374-1.382 45° 45° .049-.061 2748-2751 .0008-.0020 | — ..... (34.90-35.10) (1.25-1.55) (6.98-6.99) (.020-.050) Exhaust 1.098-1.106 45° 45° .049-.061 .2732-.2736 .0024-.0035 | .... (27.90-28.1) (1.25-1.55) (6.94-6.95) (.060-.090) Auxiliary .469-.476 459 45° .014-.019 .2587-.2593 .0009-.0023 | .... (11.90-12.10) (.35-.49) (6.572-6.587) (.023-.058) PISTONS, PINS, RINGS PISTONS PINS RINGS Clearance Piston Fit Rod Fit Ring End Gap Side Clearance Engine In. (mm) In. (mm) In. (mm) No. In. (mm) In. (mm) 1335 cc .0004-.0020 .0004-.0009 .0006-.0015 No. 1 &2 .006-.014 .0012-.0024 (.010-.050) (.010-.022) (.016-.039) (.15-.35) (.030-.060) Oil 012-035 | | ..... (.30-.90) 1487 cc .0004-.0024 .0004-.0009 .0006-.0016 No. 1 &2 .006-.014 .0012-.0020 (.010-.060) (.010-.022) (.014-.040) (.15-.35) (.030-.050) Oil 012-035 | | ...... (.30-.90) 1751 cc .0004-.0024 .0004-.0009 .0007-.0017 №. 1 & 2 .006-.014 .0008-.0018 (.010-.060) (.010-.022) (.014-.043) (.15-.35) (.020-.045) Oil (012-035 | ... (.30-.90) CRANKSHAFT MAIN & CONNECTING ROD BEARINGS MAIN BEARINGS CONNECTING ROD BEARINGS Crankshaft Journal Diam. Clearance Thrust End Play Journal Diam. Clearance Side Play Engine In. (mm) In. (mm) Bearing In. (mm) In. (mm) In. (mm) In. (mm) 1335 cc 1.9676-1.9685 .0009-.0017 No. 4 .004-.014 1.5739-1.5748 .0008-.0015 .006-.012 (49.976-50.000) (.024-.043) (.10-.35) (39.976-40.000) (.020-.038) (.15-.30) 1487 cc 1.9687-1.9697 .0010-.0022 No. 4 .004-.014 1.6526-1.1635 .0008-.0015 .006-.012 & 1751 cc (50.006-50.030) (.026-.055) (.10-.35) (41.976-42.000) (.020-.038) (.15-.30) Copyright (c) 2003 Mitchell Repair Information Company 6-15 Honda Engines ACCORD, CIVIC & PRELUDE 4-CYLINDER (Cont.) ENGINE SPECIFICATIONS (Cont.) CAMSHAFT Journal Diam. Clearance Lobe Lift Engine In. (mm) In. (mm) In. (mm) 1335 сс | ee 002-004 | ..... 1487 cc (.05-.10) 1751 cc VALVE SPRINGS PRESSURE Free Lbs. @ In. (Kg @ mm) Length Engine In. (mm) Valve Closed Valve Open 1335 cc 1487 cc 1751 cc Inner 1665 | ... 27-33(01.03 (42.30) (12-15(@26.2) Outer 1.665 | ... 94-114(01.11 (42.30) (43-52(028.3) Auxiliary 117 |... 26-32(0.87 (29.7) | (12-14(022.0) Copyright (c) 2003 Mitchell Repair Information Company
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Key Features
- Engine removal and installation
- Cylinder head removal and installation
- Manifold removal and installation
- Valve timing and adjustment
- Piston, rings, and pin replacement
- Crankshaft bearing replacement
- Oil pump removal, inspection, and installation
- Cooling system maintenance
- Engine specifications
Frequently Answers and Questions
How do I remove the cylinder head?
To remove the cylinder head, you will need to disconnect the negative battery cable, drain the cooling system, remove the air cleaner and related hoses, disconnect all electrical wiring to the cylinder head, and remove the carburetor, distributor, and coolant hoses from the cylinder head. Then remove the header pipe from the exhaust manifold, remove the power steering pump if equipped, loosen the alternator adjusting bolt, remove the compressor (with hoses connected) and bracket, remove the cam cover, and the timing belt cover. Next, bring No. 1 piston to TDC at the end of the compression stroke. Loosen the timing belt pivot and adjusting bolts, then slip the timing belt off the camshaft sprocket. Finally, remove the oil pump gear cover, pull the oil pump shaft out of the cylinder head, and remove the cylinder head bolts in reverse of the tightening sequence. Then, remove the cylinder head.
How do I adjust the valve clearance?
To adjust the valve clearance, you will need to rotate the crankshaft so that No. 1 piston is on TDC at the end of the compression stroke. Then, adjust the valve clearances on No. 1 cylinder. Rotate the crankshaft counterclockwise 180° so that No. 3 piston is on TDC at the end of the compression stroke. Then, adjust the valve clearances on No. 3 cylinder. Rotate the crankshaft counterclockwise 180° and adjust the valve clearances on No. 4 cylinder. Finally, rotate the crankshaft counterclockwise 180° and adjust the valve clearances on No. 2 cylinder. Ensure valves are adjusted with engine cold.
What is the crankcase capacity?
The crankcase capacity is 3.2 quarts (3.0L) without oil filter replacement; 3.7 quarts (3.5L) when replacing the oil filter.
How do I replace the rear main bearing oil seal?
To replace the rear main bearing oil seal, you will need to ensure the seal bore in the cap is dry. Then, apply non-hardening sealant to the inside of the seal bore, at the cap-to-block parting line. Next, coat the crankshaft and seal lip with engine oil. Install the seal with the part number side facing outward. Finally, drive in the seal until it bottoms against the block.
What is the valve clearance for a 1751 cc engine?
The valve clearance for a 1751 cc engine is: .005-.007 (.12-.17) for intake and auxiliary valves, and .010-.012 (.25-.30) for exhaust valves.
What is the oil pressure for a Civic model?
The oil pressure for a Civic model should be 21 psi (1.45 kg/cm?) at idle and 48-60 psi (3.4-4.2 kg/cm?) at 3000 RPM.
How do I replace the water pump?
To replace the water pump, you will need to drain the radiator, loosen the alternator adjusting bolts, push the alternator toward the engine, and remove the drive belt. Once the water pump is removed, you can reinstall it. Loosen the cooling system bleed valve located on the thermostat housing and fill the radiator with coolant. Once the coolant stops bubbling, close the valve. Start the engine and set the heater temperature control lever to a high position. Let the engine run for about 10 minutes, then open the bleed valve again. Allow coolant to drain from the bleed valve until air bubbles disappear, and close the valve. Then refill the radiator.