B16A in Honda Civic ED/EF – swap guide

Swap overview with verified parts, part numbers and sources.

Researched

July 25, 2026

Internal confidence

B16A in Honda Civic ED/EF.

Documented from 30 recorded sources: 5 of the ten mandatory blocks are carried by two independent publishers, 1 remains open, 1 does not apply. Internal confidence 68%.

Engine

Engine basics

(1Q) Manufacturer-level description of the B16A: 1.6 litre DOHC four-cylinder with four valves per cylinder and VTEC valve control, introduced with this generation of Civic/CR-X. Only one publisher in this run carries manufacturer data, so no output, torque or compression figure is presented here as confirmed - market versions of the B16A differ in exactly those figures.

Status: SINGLE_SOURCE · Confidence 58%

Aspiration

Naturally aspirated. The B16A is a naturally aspirated DOHC VTEC engine and every swap description consulted treats it as such; no source read here discusses forced induction for this chassis and engine combination.

Recommended donor engine

The donor is a JDM B16A. Two donor generations appear in the guides: the OBD0 B16A from the 1988-1991 CR-X SiR / Civic SiR, which matches the target car's own wiring generation, and the OBD1 B16A from the 1992-1995 Civic SiR / Del Sol VTEC, which is more common but requires the car to be converted to OBD1. For the gearbox, driveshafts and intermediate shaft the guides and parts lists point to the 1990-1993 Integra as donor. No price level is given here because none of the pages read carries a dated price.

Donor parts recommendation

The parts that have to come from a donor rather than from a catalogue are consistent across the guides and the swap parts lists: the B16A itself with its engine harness, distributor and ECU of one single wiring generation; the B-series cable-clutch gearbox; the driveshafts and the intermediate shaft, for which the 1990-1993 Integra is named; the Integra rear transmission bracket; the cable-type vehicle speed sensor and speedometer gear; the B-series header; and the radiator hoses belonging to the donor engine. Mounts, shift linkage adapter and conversion harness are the parts bought new.

Status: VERIFIED · Confidence 84%

1 · Engine mounts

VERIFIED

Two complete chassis-specific mount kits are documented for a B-series engine in the 1988-1991 Civic/CRX: the Hasport EFB1 kit and Innovative Mounts' billet B-series kit for the same chassis. Both replace the original mounts rather than adapting them. Innovative additionally lists the left-hand mount separately as part B59350 (1Q - only one publisher carries this number), whose fitment line covers manual and automatic as well as cable and hydraulic transmissions. A swap guide for this chassis further describes removing the car's original front mount bracket when the swap mounts go in. Mount kits are the one area of this swap where the parts supply is unambiguous and covered by several independent publishers.

2 · Oil pan and steering

SINGLE_SOURCE

(1Q) Only one guide addresses the oil pan area for this combination, and it reports no pan or pickup change as necessary: the B-series pan is retained. Because just one publisher covers the point, the absence of a conflict with the steering rack or the front crossmember is not independently confirmed and should not be read as a clearance certificate.

3 · Manual gearbox

SUPPORTED

Gearbox

The B-series cable-clutch gearbox is used - either the one from the JDM B16A donor or the 1990-1993 Integra gearbox, which the parts lists name because it also supplies the driveshafts and the intermediate shaft. The swap mount kits for this chassis are listed explicitly for cable-clutch transmissions, with separate variants for hydraulic-clutch B-series gearboxes, so the mount choice and the gearbox choice have to be made together.

Gearbox mount

The left-hand transmission mount is the chassis-specific swap part; Innovative Mounts lists it for the 1988-1991 Civic/CRX with B-series engines as part B59350 (1Q - only one publisher carries this number), and the Hasport EFB1 kit contains the equivalent mount. Parts lists for this swap additionally call for the rear transmission bracket from the Integra, and one swap guide describes removing the car's original front bracket.

Status: SUPPORTED · Confidence 68%

Shifter and linkage

The shift linkage does not line up after the swap and has to be adapted. Hasport sells the EFBLINK shift linkage adapter as a chassis-specific part for the 1988-1991 Civic/CRX; the guides otherwise describe shortening the shift rod. One guide gives a shortening of 2-3/8 inch (1Q - only one publisher carries this figure); the other sources describe the need to adapt without naming a dimension.

Status: VERIFIED · Confidence 82%

Clutch

The 1988-1991 car has a cable-operated clutch, and the swap is documented with a cable-clutch B-series gearbox so that the original clutch cable and pedal assembly can be kept; the mount kits are sold in separate cable and hydraulic variants for exactly this reason. No source read here specifies a particular clutch kit, pressure plate or release bearing for this combination.

Status: SUPPORTED · Confidence 65%