The Saab B230FIZZ 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 dual overhead camshafts (DOHC) with 20 valves. In standard form, it delivered 110 kW (150 PS) and 210 Nm of torque, providing smooth power delivery characteristic of Saab's five — cylinder engines.
Fitted primarily to the 9000 CS and 9000 Aero models, the B230FIZZ was engineered for refined highway cruis…
Production years 1994–1998 meet applicable Euro 1/2 standards for their respective model years and markets (EU Regulation (EC) No 715/2007 historical annex).
The Saab B230FIZZ is a 2,290 cc inline‑five naturally aspirated petrol engine engineered for executive sedans and coupes (1994-1998). It combines Bosch LH-Jetronic fuel injection with a DOHC 20-valve head to deliver smooth, linear power and strong mid-range torque. Designed to meet Euro 1/2 standards, it balances performance with the emissions requirements of its era.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,290 cc | |
Fuel type | Petrol | |
Configuration | Inline‑5, DOHC, 20‑valve | |
Aspiration | Naturally Aspirated | |
Bore × stroke | 90.0 mm × 72.0 mm | |
Power output | 110 kW (150 PS) @ 5,500 rpm | |
Torque | 210 Nm @ 3,500 rpm | |
Fuel system | Bosch LH-Jetronic 2.4 | |
Emissions standard | Euro 1 / Euro 2 (depending on model year) | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven | |
Oil type | SAE 10W-40 (Mineral or Semi-Synthetic) | |
Dry weight | 185 kg |
The Saab B230FIZZ was used exclusively in Saab's 9000 platform with longitudinal mounting. This engine was fitted to specific high-specification variants and received no major platform-specific adaptations during its production run. All applications are documented in OEM technical manuals.
The B230FIZZ's primary reliability concern is oil sludge accumulation, with elevated incidence in vehicles subjected to short trips or neglected maintenance. Saab TSB-95-07-01 documents this issue, while owner club data suggests it is a leading cause of premature camshaft failure. Infrequent oil changes and incorrect viscosity make adherence to the specified 10W-40 oil critical.
Analysis derived from Saab technical bulletins (1994-1998) and aggregated owner club failure reports (1998-2023). Repair procedures should follow manufacturer guidelines.
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The B230FIZZ can be very reliable long-term if meticulously maintained. Its main weakness is oil sludge, which is preventable with strict 7,500-10,000 km oil changes using the correct 10W-40 oil. With proper care, these engines are known to exceed 300,000 km without major issues.
The most common issues are oil sludge leading to cam wear, failing distributor caps/rotors causing misfires, leaking thermostat housings, and malfunctioning Idle Air Control valves. These are well-documented in Saab service bulletins and owner forums.
The B230FIZZ was used exclusively in the Saab 9000 range. It powered the naturally aspirated 9000 CS 2.3i (1994-1998) and the 9000 Aero 2.3i (1994-1997), distinguishing them from their turbocharged counterparts.
Yes, but gains are modest. The engine responds well to a free-flowing exhaust and performance air filter, yielding perhaps 5-10 kW. More significant power increases require forced induction, which is a complex conversion involving a turbo from a B234 engine and extensive ECU remapping.
Fuel economy is moderate for its era and size. Expect around 10.5 L/100km (27 mpg UK) in city driving and 7.0 L/100km (40 mpg UK) on the highway. Combined, a realistic figure is 8.5-9.0 L/100km (31-33 mpg UK), depending on driving style.
Yes. The B230FIZZ is an interference engine. If the timing chain fails or jumps, the pistons will collide with the open valves, causing catastrophic engine damage. Fortunately, the chain is robust, but the tensioner should be monitored.
Saab specifies SAE 10W-40 mineral or semi-synthetic oil for the B230FIZZ. Using this exact viscosity is crucial to prevent the sludge buildup that this engine is known for. Full synthetic oils of the correct viscosity may also be used.
Comprehensive technical documentation and regulatory references
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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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