The Volvo B 23 E is a 2,316 cc, inline‑four petrol engine produced between 1975 and 1984. It features a cast‑iron block, overhead camshaft (OHC) driven by chain, and Bosch K‑Jetronic mechanical fuel injection. In standard tune for the 240 series, it delivered approximately 96 kW (130 PS), marking a significant step in Volvo's adoption of fuel injection for improved drivability and emissions control.
Fitted primarily to the Volvo 240 series (242, 244, 245) GL and GLE models, the B 23 E was engineered for smooth, refined performance in family sedans and wagons. Emissions compliance for North American and European markets was achieved through precise mechanical fuel metering and exhaust gas recirculation (EGR), meeting US Federal and early Euro standards applicable for its production period.
One documented service consideration is the potential for fuel distributor wear in the K-Jetronic system, leading to uneven fuel delivery. This issue, noted in Volvo Service Bulletin 78‑05, can cause rough running and increased emissions. The engine received minor updates, including revised cylinder head porting, before being succeeded by the B230 series with electronic fuel injection.
Production years 1975–1984 meet US Federal standards and early Euro 1 (1988) for later models in specific markets (Swedish Transport Agency Type Approval Records).
The Volvo B 23 E is a 2,316 cc inline‑four petrol engine engineered for mid-size sedans and wagons (1975-1984). It combines a robust cast‑iron block with a single overhead camshaft and Bosch K-Jetronic mechanical fuel injection to deliver smooth, linear power. Designed to meet contemporary US Federal and emerging European emissions regulations, it balances performance with improved emissions control over carburetted predecessors.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,316 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 96.0 mm × 80.0 mm | |
| Power output | 96 kW (130 PS) @ 5,400 rpm | |
| Torque | 195 Nm @ 3,700 rpm | |
| Fuel system | Bosch K-Jetronic mechanical fuel injection | |
| Emissions standard | US Federal / Early Euro 1 (market-dependent) | |
| Compression ratio | 9.3:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain‑driven camshaft | |
| Oil type | SAE 10W‑40 (Mineral/Synthetic blend) | |
| Dry weight | Not specified in available OEM docs |
The SOHC design offers a good balance of performance and serviceability. The K-Jetronic system requires precise adjustment and is sensitive to fuel quality; use of clean, high-octane fuel is recommended. Regular oil changes (every 10,000 km) with quality oil are critical for timing chain longevity. Fuel distributor wear, documented in Service Bulletin 78-05, can cause running issues; inspect during major services. Genuine Bosch parts are strongly recommended for fuel system repairs.
Oil Specs: Specification evolved to SAE 10W-40 by 1980 (Volvo Workshop Manual 1980), reflecting improved oil technology.
Emissions: Complied with US Federal standards; some late-production models met early Euro 1 requirements in specific markets (Swedish Transport Agency).
Power Ratings: Measured under SAE net horsepower standards (Volvo Technical Specification Sheet B23E).
Volvo Workshop Manual (1980 Edition)
Volvo EPC Archive Documentation (VEP-B23-001)
Volvo Service Bulletin 78-05
Swedish Transport Agency (Transportstyrelsen) Type Approval Records
The Volvo B 23 E was used across Volvo's 240 Series platforms with longitudinal mounting. This engine received minor cylinder head and emissions control revisions over its lifespan, but no major facelifts created significant interchange limits for core components. All adaptations are documented in OEM technical bulletins.
The engine code "B23E" is typically stamped on a flat pad on the left-hand side of the engine block, near the distributor. The casting number for the block is often 1235400. Visually, it is identified by its cast-iron construction, overhead camshaft cover, and the distinctive Bosch K-Jetronic fuel distributor and air flow sensor assembly mounted on the intake side. Differentiation from the carburetted B23 or later B230E is by the fuel injection system and specific engine code stamping.
The B 23 E's primary long-term concern is wear or malfunction within the Bosch K-Jetronic fuel injection system, particularly the fuel distributor and control pressure regulator. Volvo Service Bulletin 78-05 documented this as a cause of uneven running and emissions failures. Consistent use of high-quality fuel and adherence to maintenance schedules are critical for preventing drivability issues.
Analysis derived from Volvo service bulletins (1975-1985) and workshop manuals (1980). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLVO B-23-E.
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