The Lancia 834 B2.246 – Petrol is a 1,995 cc, inline‑four naturally aspirated petrol engine produced between 1985 and 1992. It features a dual overhead camshaft (DOHC) design and electronic fuel injection, delivering outputs of 85 kW (115 PS) and 168 Nm of torque. Its high-revving character provides linear power delivery for refined touring.
Fitted to premium variants of the Delta and Thema platforms, the 834 B2.246 was engineered for smooth, quiet operation and everyday drivability. Emissions compliance for its era was managed through its electronic fuel injection and catalytic converter, allowing it to meet Euro 1 standards for the European market during its later production years.
One documented characteristic is the potential for camshaft belt tensioner wear over time. This issue, noted in Lancia service bulletins, can lead to belt noise or slippage if not inspected during routine maintenance. In 1988, Lancia revised the tensioner design to improve durability.
Production years 1985–1989 meet pre-Euro standards; 1990–1992 models comply with Euro 1 emissions (EC Directive 91/441/EEC).
The Lancia 834 B2.246 – Petrol is a 1,995 cc inline-four naturally aspirated petrol engine engineered for premium hatchbacks and sedans (1985-1992). It combines DOHC architecture with electronic fuel injection to deliver smooth, linear power. Designed to meet evolving emissions standards, it balances refinement with dependable performance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,995 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 8-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 84.0 mm × 90.0 mm | |
| Power output | 85 kW (115 PS) @ 5,800 rpm | |
| Torque | 168 Nm @ 4,500 rpm | |
| Fuel system | Weber-Marelli IAW electronic fuel injection | |
| Emissions standard | Pre-Euro (1985–1989); Euro 1 (1990–1992) | |
| Compression ratio | 9.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven (requires periodic replacement) | |
| Oil type | SAE 10W-40 (API SG/CC) | |
| Dry weight | 138 kg |
The naturally aspirated engine provides smooth, predictable power ideal for daily commuting but requires strict adherence to the 60,000 km timing belt replacement interval to prevent catastrophic engine damage. Using the specified SAE 10W-40 oil is critical for maintaining valve train clearances. The Weber-Marelli injection system demands clean fuel to prevent injector clogging. The 1988 revision to the tensioner design improved reliability; pre-1988 engines should have the updated tensioner installed during belt service.
Oil Specs: Requires SAE 10W-40, API SG/CC specification (Lancia Delta Owner's Manual, Ed. 1985).
Emissions: Euro 1 certification applies to 1990-1992 models only (EC Directive 91/441/EEC). Pre-1990 models have no formal Euro standard.
Power Ratings: Measured under EEC 80/1269 standards (Lancia Group PT-1990).
Lancia Delta Workshop Manual, Edition 1986
Lancia Technical Bulletin: TB-85-02
European Commission: Directive 91/441/EEC
Lancia Engineering Report: ER-84-08
The Lancia 834 B2.246 – Petrol was used in the Lancia Delta and Thema platforms with transverse and longitudinal mounting respectively. This engine received specific adaptations for each platform, including different intake manifolds and engine mounts. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the timing belt cover (Lancia Workshop Manual). The 8th digit of the VIN is 'A' for vehicles equipped with this 2.0L NA engine. Visually, it is identifiable by its silver camshaft covers and lack of turbocharger or intercooler. Critical differentiation from turbo models: This engine has no turbo plumbing and uses a simpler intake manifold. Service parts, particularly the timing belt kit and intake components, vary between Delta and Thema applications.
The 834 B2.246 – Petrol's primary reliability risk is timing belt tensioner failure due to age and wear. Lancia service documentation highlights this as a common cause of belt noise and potential slippage. UK MOT statistics from the 1990s frequently cited ignition and emissions faults on high-mileage examples. Adherence to the manufacturer's timing belt and tensioner replacement schedule is critical for longevity.
Analysis derived from Lancia technical bulletins (1985-1992) and European Commission type-approval records. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about LANCIA 834-B2-246.
Comprehensive technical documentation and regulatory references
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LANCIA Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
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)
UK type-approval authority for automotive products.
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
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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