B18C1 engine with hydraulic transmission (cable-chassis conversion)
into Civic EF (from Integra GS-R)

DC2 Integra GS-R 1994-2001
→
EF Civic EF 1988-1991

Yes: the B18C1 engine with hydraulic transmission (cable-chassis conversion) from the Integra GS-R (1994-2001) fits the Civic EF (1988-1991) — moderate difficulty, modifications required.

Verdict
Fits.
Verified entry · modifications required
Verified ✓
Difficulty
Moderate
Mods
Required
Category
Engine

Installation notes

Yes — the B18C1 engine and hydraulic transmission from a 1994-2001 Integra GS-R (DC2) fits a 1988-1991 Civic (EF) with an EF B-series hydro mount kit, a clutch solution for the cable-clutch chassis, an adapter harness and B-series axles. Hasport sells EFB2 for B-series engines with the hydraulic transmission and notes the clutch conversion is sold separately. Innovative lists a kit for the ED/EF chassis converting from cable to hydraulic transmission with B-series engines. The same mount kits cover the 1988-1991 CRX, which shares the EF platform.
ModsMods req.

Required modifications

Engine mounts: an EF B-series kit for the hydraulic transmission (Hasport EFB2, or Innovative 49150). Clutch: the EF has a cable clutch and the GS-R gearbox is hydraulic. Hasport offers two routes: its EFBHCL lever assembly, a complete mechanical conversion that lets the EF clutch cable operate the hydraulic transmission, or its Clutch Master Adapter (CMA), which needs a clutch master cylinder, slave cylinder and line added. Innovative sells 49150 with or without a cable-to-hydraulic actuator. Innovative notes some B18 engines have a timing-belt post mount that will not fit its kit. Wiring: an EF B-swap adapter harness between the B-series engine harness and the EF chassis wiring (Rywire's version must match the EF's trim and year). Axles and shift linkage must suit the B-series hydraulic transmission.

Caution

Important caveats

  • The EF chassis uses a cable clutch, so a hydraulic B-series transmission needs either the Hasport lever assembly or a cable-to-hydraulic actuator; plan this before buying mounts.
  • Innovative says some B18 engines have a timing-side post mount that will not fit its kit and the correct post mount must be used.
  • Innovative separates its kits for D-series cars converting to B-series and for right-hand-drive or factory B-series cars; order the one that matches your chassis.
  • Rywire's EF adapter harness plugs between the B-series engine harness and the factory EF wiring; it is not a full engine harness.

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Reference

B18C specs → D14A1 specs → LEB-H5 specs → B18A1 specs → D16A6 specs → B18B1 specs → B18C1 specs → B18C2 specs → B18C7 specs → D16A8 specs → D16W4 specs → ED specs → EF specs → EG specs → EL specs → EN specs → EP specs → ER specs → ES specs → PR3-2 Cylinder Head → P72 Cylinder Head → RNE ECU →

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Sources

4 refs
  1. 01 https://hasportperformance.com/products/efb2/
  2. 02 https://hasportperformance.com/products/efbhcl/
  3. 03 https://innovativemounts.com/products/88-91-civic-crx-conversion-engine-mount-kit-b-series-manual-hydro-cable-2-hydro
  4. 04 https://www.hybrid-racing.com/products/rywire-b-swap-adapter-harness-88-91-ef-civic-crx
Submitted by FitMyBuild research Added Updated

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