K20Z3 engine and 6-speed transmission
into Integra (from Civic Si)

FA5 Civic Si 2006-2011
→
DC2 Integra 1994-2001

Yes: the K20Z3 engine and 6-speed transmission from the Civic Si (2006-2011) fits the Integra (1994-2001) — moderate difficulty, modifications required.

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

Installation notes

Yes — the K20Z3 engine and 6-speed transmission from a 2006-2011 Civic Si (FA5/FG2) fits a 1994-2001 Integra (DC2) with a K-series mount kit for the 02-11 Si gearbox, a K-swap harness and swap axles. Hasport lists the 2002-2011 Civic Si manual transmission as compatible with its DC2K2 kit. The K20Z3 is a 2.0 L i-VTEC rated at 197 hp, with VTEC on both cams and variable timing on the intake cam. Its electronic throttle is the main wiring difference from an RSX K20A2 swap.
ModsMods req.

Required modifications

Engine mounts: Hasport DC2K2 (works with RSX and 02-11 Civic Si manual transmissions; raises the engine 0.75 in.) or the Hasport EGK2 version of the EGK kit; Innovative lists its K-series right-hand mount (90120) for the 94-01 Integra DB/DC and the 06-11 Civic Si FG/FA. Throttle/ECU: the K20Z3 uses an electronic (drive-by-wire) throttle, so the ECU, pedal and throttle body setup must be planned. Wiring: K-swap engine and DC2 conversion harness. Also axles for the Si gearbox, shifter cables, cooling, fuel and exhaust.

Caution

Important caveats

  • Hasport says power steering cannot be used with the DC2K2 kit and that it is not compatible with a no-cut shifter box.
  • The K20Z3 uses drive-by-wire throttle from the factory; confirm your ECU and harness support it or plan a conversion.
  • Many K-swap harnesses are built around 2002-2004 RSX wiring; check K20Z3 compatibility with the harness maker.
  • FitMyBuild already has a separate entry for the K20Z3-era Civic Si transmission into the RSX.

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Reference

K20A specs → D14A1 specs → K20Z4 specs → LEB-H5 specs → K20Z2 specs → B18A1 specs → K20Z3 specs → K20A3 specs → D16A6 specs → K20Z1 specs → K20A2 specs → D16Z6 specs → D16W4 specs → EA specs → EC specs → ED specs → EE specs → EG specs → EL specs → EN specs → ER specs → ES specs → K20A1 specs → K20A4 specs → K20A6 specs → K20A7 specs → K20A9 specs → K20B specs → K20Z5 specs → LEC-H5 specs → PRB-A00 Cylinder Head → RNE ECU →

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Sources

4 refs
  1. 01 https://hasportperformance.com/products/dc2k2-k-series-engines-in-94-01-integra/
  2. 02 https://www.hybrid-racing.com/products/hasport-performance-dc-integra-raised-height-k-swap-mounts
  3. 03 https://innovativemounts.com/products/92-00-12-civic-06-11-civic-si-94-01-integra-conversion-engine-block-mount-k-series
  4. 04 https://en.wikipedia.org/wiki/Honda_K_engine
Submitted by FitMyBuild research Added Updated

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