B18C Swap – Integra ’94-01

by NinjaX on June 17, 2010

Please take note that this B18C swap post only applies to removing and installing the Acura Integra 1994-2001 B18C engine and does not cover swapping the engine into another Honda vehicle.

For installation reference, label all electrical connectors, vacuum hoses, and fuel lines before removal. Also, place mating marks on engine hood and other major assemblies before removal.

When battery is disconnected, the Integra’s computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. Obtain radio anti-theft codes, if necessary, before disconnecting battery.

Fuel system is under pressure in the Integra. Release pressure before servicing fuel system components.

B18C and B18C5 ENGINE REMOVAL

1. Remove hood. Remove strut brace. Disconnect battery cables. Disconnect battery cables from underhood fuse/relay box and ABS fuse/relay box. Remove intake air duct, air cleaner housing assembly and bracket. Remove EVAP canister hose.

2. Disconnect B18C engine wire harness connectors on right side of engine compartment. Release fuel pressure (view beginning of page). Remove fuel feed and fuel return lines. Remove brake booster vacuum hose. Remove throttle cable by loosening lock nut and removing cable end from accelerator linkage.

3. Disconnect engine wire harness connectors on left side of engine compartment. Remove harness clamps. Remove cruise control actuator. Remove engine ground cable. Remove power steering pump belt and mounting bolts. Remove power steering pump, with hoses attached, and wire aside.

4. Loosen idler pulley bolt and adjusting bolt. Remove air conditioning compressor belt. On manual transmission models, remove clutch slave cylinder, leaving hydraulic line attached. On all models, remove transmission ground cable.

5. Remove radiator cap. Raise and support vehicle. Remove front wheels and splash shield. Drain engine and transmission oil. Reinstall engine and transmission drain plugs using NEW washers. Drain cooling system. Remove upper and lower radiator hoses and heater hoses. On automatic transmission models, remove ATF cooler hoses.

6. On all Acura Integra models, remove radiator assembly. Remove A/C compressor, with hoses attached, and wire aside. Disconnect oxygen sensor and remove exhaust pipe “A”. On manual transmission models, remove shift rod and extension rod. On automatic transmission models, remove shift cable. On all models, remove damper fork and disconnect suspension lower arm ball joints. Remove axle shafts.

7. Attach chain hoist to the B18C engine. Raise hoist to take slack from chain. Remove left and right front engine mounts and brackets. Remove rear and side engine mount brackets. Remove transmission mount. Ensure all hoses and electrical connectors have been removed. Slowly raise engine, once again ensure all hoses and electrical connectors have been disconnected. Raise engine and remove from vehicle.

B18C and B18C5 ENGINE INSTALLATION

1. To install, reverse removal procedure. To prevent excessive engine vibration and premature engine mount wear, tighten engine/transaxle mounts in sequence specified in next step. See figure.

2. Install transmission mount and tighten bolts/nuts to transmission, but leave mount-to-frame bolt loose. Install engine side mount and tighten bolts/nuts to B18C, but leave mount-to-frame bolt loose. Tighten mount to frame bolts on transmission mount and side engine mount. Install rear mount bracket. Tighten rear mount bracket bolts to engine first, then to frame. Install right front mounting bracket and tighten bolts to engine first, then to frame. Install left front mounting bracket and tighten bolts to engine first, then to frame.

3. When installing axle shafts, use NEW spring clips. Insert axle shafts until spring clips click into groove of differential side gear. Ensure harness connectors and hoses are connected properly. Ensure control cables are not bent or pinched and are adjusted properly. Tighten remaining bolts/nuts to specification. See Torque specs. On manual transmission models, adjust clutch pedal free play and verify transaxle shifts smoothly.

4. On all Acura Integra models, adjust drive belt tension. Fill or top off all fluids. Fill and bleed air from cooling system. Start engine and check for leaks.

For Integra Torque Specs Click Here

Got questions and comments on how to remove and install engine from Acura Integra 1994-2001? Leave it below!

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