The Volvo B 28 E is a 2,846 cc, inline‑six naturally aspirated petrol engine produced between 1975 and 1980. It featured a single overhead camshaft (SOHC) design with a cast iron block and head, derived from the earlier B30 for use in luxury models. In standard form it delivered 107 kW (145 PS), with higher — output versions reaching 118 kW (160 PS) and torque figures around 226–235 Nm, providing smooth, effortless cruising.
Fitted primarily to the Volvo 260 Series (262, 264, 2…
Production years 1975–1980 meet US Federal or early Euro 1 standards depending on market and specification (EU Regulation (EC) No 715/2007 historical annex).
The Volvo B 28 E is a 2,846 cc inline‑six naturally aspirated petrol engine engineered for executive sedans and estates (1975-1980). It combines a single overhead camshaft (SOHC) design with a robust cast iron construction to deliver smooth, reliable performance. Designed to meet contemporary emissions standards, it relies on carburetion and EGR for compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,846 cc | |
Fuel type | Petrol | |
Configuration | Inline‑6, SOHC, 12‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 88.9 mm × 76.0 mm | |
Power output | 107–118 kW (145–160 PS) | |
Torque | 226–235 Nm | |
Fuel system | Single downdraft carburetor (e.g., Zenith-Stromberg) | |
Emissions standard | US Federal / Early Euro 1 (market dependent) | |
Compression ratio | 8.7:1 – 9.3:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven camshaft | |
Oil type | SAE 10W-40 (detergent, API SF/CC) | |
Dry weight | Approx. 195 kg |
The Volvo B 28 E was used across Volvo's 260 platform with longitudinal mounting. This engine received minor updates during its production run, including revised carburetor specifications and ignition system components. All adaptations are documented in OEM technical bulletins.
The B 28 E's primary long-term reliability risk is distributor drive gear wear, particularly in units with poor maintenance history. While formal failure statistics are unavailable for this vintage, enthusiast club data and workshop reports consistently cite ignition timing issues, carburetor wear, and cooling system neglect as the most common causes for repair. Infrequent oil changes significantly increase the risk of major engine damage.
Analysis derived from Volvo technical bulletins (1975-1980) and aggregated data from Volvo enthusiast clubs and specialist workshops. Repair procedures should follow manufacturer guidelines where available.
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The B 28 E is renowned for its smoothness and robust inline-six construction, making it fundamentally reliable if well-maintained. Its main vulnerability is the distributor drive gear, which can wear prematurely if incorrect oil is used. With diligent servicing and correct lubrication, these engines can run reliably for hundreds of thousands of miles.
The most frequent issues are distributor drive gear wear (causing ignition faults), carburetor problems (wear, clogging), oil leaks from aged gaskets/seals, and cooling system failures (radiator corrosion, water pump failure). These are well-documented in vintage Volvo service literature and bulletins.
The B 28 E engine was used exclusively in the Volvo 260 Series (262, 264, 265) from 1975 until 1980. It was eventually replaced by the fuel-injected B28F engine in the same platform.
Yes, within limits. Common upgrades include fitting a higher-flow carburetor, a performance exhaust manifold, and a free-flow exhaust system. More aggressive camshafts and higher compression pistons are also available. Significant power gains are limited by the SOHC design.
Fuel economy is modest by modern standards. Expect figures around 13-16 L/100km (17-21 mpg UK) in mixed driving for a car like the 264. This can vary significantly based on the specific carburetor, driving style, and vehicle condition.
No. The Volvo B 28 E is a non-interference (or 'free-wheeling') engine. If the timing chain fails, the pistons will not contact the valves, preventing catastrophic internal damage. This is a significant safety feature for a vintage engine.
For original specification, a high-quality detergent oil like SAE 10W-40 meeting API SF/CC standards is essential to protect the distributor drive gear as per Service Bulletin #28E-01. Modern classic car oils with ZDDP additives are recommended for added protection.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
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