B16a OBD0 Engine:

B16a engine

Let’s break down some straightforward info on the Honda B16A OBD0 engine — one of the most iconic JDM powerplants from the late ‘80s and early ‘90s.

This engine typically came in Japanese Domestic Market (JDM) Honda models between 1988 and 1991, most notably the Integra XSi/RSi and the Civic/CRX SiR. Because of its availability and solid performance for the time, it quickly became a fan favorite swap for 88–91 Civics and CRXs here in the U.S.

Key Features & Identifiers

  • Cable transmission setup (unlike later hydraulic systems)
  • 10.2:1 compression ratio, giving it a slightly lower compression compared to later versions
  • Intake manifold marked with “PGM-FI” (Programmed Fuel Injection)
  • Valve cover with “DOHC” in large letters and “VTEC” in smaller font — a quick visual clue that sets it apart from other B-series variants

In stock form, the OBD0 B16A makes around 160 horsepower at 7,600 RPM and 111 lb-ft of torque, thanks to its high-revving nature and VTEC system — pretty impressive for a 1.6L engine back in the late ‘80s.

For many Honda enthusiasts, this engine represents the start of the VTEC era. It’s known for its smooth power delivery, willingness to rev, and the unmistakable crossover sound when VTEC kicks in. Whether you’re building a period-correct EF swap or just geeking out on Honda history, the B16A OBD0 still holds legendary status today.