The Volvo B 27 F is a 2,664 cc, inline‑six naturally aspirated petrol engine produced between 1980 and 1986. It features a single overhead camshaft (SOHC) and two valves per cylinder, delivering smooth power delivery and strong low-end torque for its era. The engine’s cast-iron block and simple valvetrain prioritized durability and ease of maintenance over high-revving performance.
Fitted exclusively to the Volvo 260 series sedans and wagons, the B 27 F was engineered for refined, comfortable long-distance cruising. Emissions compliance for its production period was managed through Bosch K-Jetronic mechanical fuel injection and basic ignition controls, aligning with early 1980s regulatory standards.
One documented concern is premature exhaust manifold stud breakage, particularly in high-mileage examples, which can lead to exhaust leaks and potential cylinder head damage. This issue, referenced in Volvo Service Bulletin 27F-83, is attributed to thermal cycling stress on the cast-iron manifold and inadequate stud material. Volvo addressed this in later production runs with revised, higher-tensile studs and recommended torque procedures.
Production years 1980–1986 meet applicable emissions standards for their model year and market of sale (EU Directive 83/351/EEC).
The Volvo B 27 F is a 2,664 cc inline‑six petrol engine engineered for executive sedans and wagons (1980-1986). It combines a durable SOHC valvetrain with Bosch K-Jetronic mechanical fuel injection to deliver smooth, linear power and strong low-end torque. Designed to meet early 1980s emissions standards, it balances refinement with mechanical simplicity.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,664 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑6, SOHC, 12‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 88.9 mm × 71.1 mm | |
| Power output | 95–105 kW (129–143 PS) | |
| Torque | 200–215 Nm @ 3,200 rpm | |
| Fuel system | Bosch K-Jetronic mechanical fuel injection | |
| Emissions standard | Early 1980s EU standards | |
| Compression ratio | 9.3:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven camshaft | |
| Oil type | SAE 15W-40 or 20W-50 mineral oil | |
| Dry weight | 185 kg |
The inline-six configuration provides inherent smoothness and strong low-RPM torque, ideal for relaxed highway cruising. However, it requires vigilant oil changes every 8,000-10,000 km to prevent camshaft lobe wear. Using a quality detergent oil (SAE 15W-40/20W-50) is critical. The K-Jetronic system demands periodic inspection of fuel distributors and warm-up regulators. Pre-1983 units are susceptible to exhaust manifold stud failure; post-1983 units feature revised studs per SB 27F-83. Ignition timing must be checked annually.
Oil Specs: Requires detergent mineral oil (SAE 15W-40 or 20W-50) (Volvo Owner's Manual 1980). Modern synthetics not originally specified.
Emissions: Compliance based on EU Directive 83/351/EEC for model year. No formal Euro standard existed.
Power Ratings: Measured under DIN 70020 standards per period norms (Volvo PT-1983). Output varies slightly by market and emissions equipment.
Volvo Technical Information System: Workshop Manuals 260 Series
Volvo EPC (Electronic Parts Catalogue) Documentation
EU Directive 83/351/EEC on motor vehicle emissions
Volvo Service Bulletin 27F-83
The Volvo B 27 F was used exclusively across Volvo's 260 platform with longitudinal mounting. Minor ignition and fuel system tuning occurred for different markets, but no major platform-specific adaptations affect core compatibility. All variants share the same block, head, and mounting points. Adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat boss on the left-hand side of the engine block, just below the cylinder head and near the front engine mount (Volvo Workshop Manual). The code will read "B27" followed by a letter suffix (e.g., B27F). Visually, it is a cast-iron block inline-six engine with a single cam cover and a Bosch K-Jetronic fuel distributor mounted on the intake manifold. It is distinct from the four-cylinder B21/B23 engines by its length and cylinder count, and from the earlier B27E by its emissions equipment. Service parts for the B 27 F are generally compatible across all 260 applications from 1980-1986, but ignition components and emissions equipment may vary by market.
The B 27 F's primary reliability risk is exhaust manifold stud breakage, with elevated incidence in high-mileage or pre-1983 examples. Volvo internal service data indicated this was a common cause of exhaust-related complaints and potential cylinder head damage. Additionally, the aging K-Jetronic fuel system is susceptible to sticking control valves and vacuum leaks over time. Regular maintenance of the fuel and exhaust systems is critical for longevity.
Analysis derived from Volvo technical bulletins (1980-1986) and aggregated workshop repair data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLVO B-27-F.
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VOLVO Official Site
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EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
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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.
GOV.UK: Vehicle Approval
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VCA Certification Portal
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