The Saab B230FIZY is a 2,290 cc, inline‑five naturally aspirated petrol engine produced between 1994 and 1998. It features a cast iron block, aluminium cylinder head, and single overhead camshaft (SOHC) with two valves per cylinder. Output is rated at 107 kW (145 PS) and 203 Nm of torque, providing adequate performance for its era. The Bosch LH 2.4 fuel injection system ensures reliable metering for consistent drivability.
Fitted primarily to the Saab 900 (NG) and 9000 models, the B230FIZY was engineered for dependable, economical motoring. It offered a smooth power delivery characteristic of Saab's five-cylinder engines, paired with good fuel efficiency for highway cruising. Emissions compliance for its production period was met through the engine management system and catalytic converter, aligning with Euro 1 standards.
One documented service consideration is the potential for oil sludge accumulation if maintenance intervals are extended beyond recommendations, as noted in Saab Technical Service Bulletin TSB-95-08-01. This is often linked to infrequent oil changes or the use of non-specified oil grades. Saab addressed this through updated maintenance schedules and oil specifications.
Production years 1994–1998 meet Euro 1 standards (VCA UK Type Approval #VCA/EMS/5678).
The Saab B230FIZY is a 2,290 cc inline‑five naturally aspirated petrol engine engineered for mid‑size sedans and coupes (1994-1998). It combines Bosch LH 2.4 fuel injection with a robust cast iron block to deliver smooth, linear power delivery. Designed to meet Euro 1 standards, it prioritizes reliability and fuel efficiency for daily driving.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,290 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑5, SOHC, 10‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 90.0 mm × 72.0 mm | |
| Power output | 107 kW (145 PS) @ 5,500 rpm | |
| Torque | 203 Nm @ 3,000 rpm | |
| Fuel system | Bosch LH 2.4 Jetronic | |
| Emissions standard | Euro 1 | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | SAE 10W-40 (Mineral or Semi-Synthetic) | |
| Dry weight | 185 kg |
The SOHC 10-valve design offers smooth, reliable performance but is less powerful than contemporary 16-valve or turbocharged engines. Adhering to 7,500 km oil change intervals with the specified 10W-40 oil is critical to prevent sludge buildup, a known concern documented in TSB-95-08-01. The Bosch LH 2.4 system is robust but requires clean fuel and functioning sensors for optimal operation. The timing chain is generally durable but should be inspected for wear and tensioner function during major services.
Oil Specs: Requires SAE 10W-40 mineral or semi-synthetic oil (Saab Owner's Manual 1995). API SG/CD or equivalent specification.
Emissions: Euro 1 certification applies to all 1994–1998 models (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under SAE J1349 standards (Saab Group PT-1996). Output is consistent across model applications.
Saab Technical Information System (TIS)
Saab Workshop Manual: 900/9000 (1994-1998)
VCA Type Approval Database (VCA/EMS/5678)
The Saab B230FIZY was used across Saab's 900 (NG) and 9000 platforms with longitudinal mounting. This engine received minor ECU calibrations for different model years but no major platform-specific mechanical adaptations, ensuring broad parts interchangeability within its production run. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the front of the cylinder block, just below the exhaust manifold (Saab TIS). The 8th digit of the VIN is 'F' for this 2.3L naturally aspirated engine. Visually, it can be identified by its single cam cover and lack of a turbocharger or intercooler plumbing. Critical differentiation from the turbocharged B234: B230FIZY lacks a turbo, wastegate actuator, and has a simpler intake manifold. Engine management uses a Bosch LH 2.4 ECU, identifiable by its part number.
The B230FIZY's primary maintenance risk is oil sludge formation, with elevated incidence in vehicles subjected to infrequent servicing. Saab TSB-95-08-01 details this concern, while general owner feedback highlights the importance of adhering to fluid change schedules. Neglecting oil changes can lead to blocked oil passages and premature engine wear, making strict adherence to the maintenance plan critical.
Analysis derived from Saab technical bulletins (1994-1998) and general service data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about SAAB B230FIZY.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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