Sofim 8140 engine

Sofim 8140 engine series

Company type	Diesel engine
Industry	Automotive engineering
Founded	1974
Products	Diesel engines (2.0 L, 2.4 L, 2.5 L, 2.8 L variants)

The 8140 was a diesel engine engineered by Sofim with a focus on commercial vehicle applications worldwide. Originally launched as a naturally aspirated diesel featuring swirl chamber indirect injection, its overhead camshaft configuration—operated via a toothed timing belt—represented a notable advancement over the conventional overhead valve diesel engines of that era. Turbocharging efforts on the 1974 design encountered setbacks until 1985 due to thermal management issues within the aluminium cylinder head and swirl chambers, which hindered progress despite eventual solutions. Fiat incorporated this engine in their 131 model during the 1977 London-Sydney Marathon. By the mid-1980s, direct injection versions were introduced. Certain models bore Renault design codes: S8 denoting indirect injection and S9 for direct injection variants.

2.0 L variant

The first 2.0 L four-cylinder iteration, designated Sofim 8144.65, offered a displacement of and generated . This engine, along with the larger 2.4 L version, powered light commercial vehicles such as the Saviem SG2, OM Grinta, and Fiat/Iveco Daily, in addition to passenger cars like the Fiat 131 and Fiat 132. It was also installed in the Fiat Campagnola.

2.4 L variant

The original 2.4 L large displacement engine has a capacity of , with bore and stroke dimensions of .

Engine model	Displacement (cc)	Maximum power PS (kW) at rpm	Peak torque N⋅m (lb⋅ft) at rpm	Configuration and cylinder count	Valve setup / number of valves	Applications	Production years
8144.61	2445	72 (53)/4200	147 N⋅m (108 lb⋅ft)/2400	R4, IDI, naturally aspirated	OHC/8	Fiat 131 Fiat 132 Fiat Argenta Fiat Campagnola Fiat Ducato Iveco Daily	1978–1983 1978–1981 1981–1985 1979–1987 1981–1989 1978–1990
S8U 720/722	2445	71 (52)/4200	150 N⋅m (111 lb⋅ft)/2200	R4, IDI, naturally aspirated	OHC/8	Renault Trafic Renault Master	1981–1989
8144.21	2445	92 (68)/3800	216 N⋅m (159 lb⋅ft)/2200	R4, DI, turbocharged	OHC/8	Fiat Argenta Fiat Ducato	1983–1985 1981–1989
8140.21	2445	95 (71)/4100	217 N⋅m (160 lb⋅ft)/2300	R4, DI, turbocharged	OHC/8	Iveco TurboDaily	1980–1990
S8U 750	2445	92 (68)/3800	216 N⋅m (159 lb⋅ft)/2200	R4, IDI, turbocharged	OHC/8	Renault Master B90	1986–1990
8144.91	2445	101 (74)/4100	217 N⋅m (160 lb⋅ft)/2300	R4, IDI, turbocharged, intercooled	OHC/8	Fiat Croma Lancia Thema	1985–1989 1984–1988

2.5 L variant

Launched in 1990, the 2.5 L model extended the stroke by 2 mm to reach 92 mm while preserving the 93 mm bore, resulting in a displacement of .

Engine designation	Displacement (cc)	Maximum power PS (kW) at rpm	Maximum torque N⋅m (lb⋅ft) at rpm	Cylinder configuration and count	Valve setup / total valves	Vehicles	Production period
'8140.07'	2499	/4200	/2200	R4, DI, naturally aspirated	OHC/8	Fiat Ducato Iveco TurboDaily Renault Trafic Renault Master Renault Messenger Tarpan Honker	1989–1994 1990–1994 1990–1994 1990–1997 1990–1999 1991–1996
'8144.67'	2499	75 PS /4200	162 Nm /2200	R4, IDI, naturally aspirated	OHC/8	Fiat Croma Fiat Ducato	1989–1996 1989–1994
'S9U (8140.67)'	2499	80 PS /4000	155 Nm /2200	R4, IDI, naturally aspirated	OHC/8	Renault Master Opel Movano A Nissan Interstar	1997–2000 1998–2000 1999–2000
'8140.67'	2499	84 PS /4200	164 Nm /2400	R4, IDI, naturally aspirated	OHC/8	Fiat Ducato	1994–1999
'8140.27'	2499	95 PS /3800	216 Nm /2000	R4, DI, turbocharged	OHC/8	Fiat Ducato Iveco TurboDaily Renault Messenger Tarpan Honker	1989–1994 1989–1994 1989–1996 1991–1996
'S9U (8140.27)'	2499	88-94 PS /3800	200-205 Nm /2200	R4, DI, turbocharged	OHC/8	Renault Master	1989–1994
'8140.47'	2499	116 PS /3800	245 Nm /2000	R4, DI, turbocharged, intercooled	OHC/8	Fiat Ducato Iveco TurboDaily Renault Messenger	1994–2002 1994–2000 1994–1996
'8144.97'	2499	116 PS /3900	245 Nm /2200	R4, IDI, turbocharged, intercooled	OHC/8	Fiat Croma Lancia Thema	1989–1996
'S8U-762 (8144.97)'	2499	113 PS /4000	240 Nm /2000	R4, IDI, turbocharged, intercooled	OHC/8	Renault Safrane	1992–1996

2.8 L variant

The 2.8 L engine features a displacement of 2800 cc with its bore and stroke dimensions measuring .

Engine code	Displacement (cc)	Peak power PS (kW) at rpm	Peak torque N⋅m (lb⋅ft) at rpm	Configuration and cylinder count	Valve arrangement / total valves	Applications	Years produced
8140.63	2799	87 (64)/3800 85 (63)/3800	180 N⋅m (133 lb⋅ft)/2000	R4, IDI, naturally aspirated	OHC/8	Fiat Ducato Iveco Daily Renault Mascott	1996–2000
8140.23	2799	103 (76)/3600 106 (78)/3600	240 N⋅m (177 lb⋅ft)/1900 235 N⋅m (173 lb⋅ft)/1900 250 N⋅m (184 lb⋅ft)/1800	R4, DI, turbocharged	OHC/8	Iveco Daily Renault Master Renault Mascott	1996–2004
S9W (8140.43)	2799	115 (84)/3600	260 N⋅m (192 lb⋅ft)/1800	R4, DI, turbocharged, intercooled	OHC/8	Renault Master Opel Movano A Nissan Interstar	1997–2000
8140.43	2799	118 (87)/3600 122 (90)/3600	270 N⋅m (199 lb⋅ft)/1800 285 N⋅m (210 lb⋅ft)/1800	R4, DI, turbocharged, intercooled	OHC/8	Fiat Ducato Citroën Jumper Peugeot Boxer Iveco Daily	1996–2000
8140.43S	2799	127 (93.5)/3600 125 (92)/3600	300 N⋅m (221 lb⋅ft)/1800 290 N⋅m (214 lb⋅ft)/1800	'R4, DI, common rail, turbocharged, intercooled'	OHC/8	'Fiat Ducato Citroën Jumper Peugeot Boxer Iveco Daily Renault Mascott'	2000–2005

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F1A/F1C

The F1A (2.3 L) and F1C (3.0 L) engine families originated from earlier designs and have been manufactured for marine and industrial applications by Fiat Powertrain Technologies (FPT) and CNH Industrial since 2012. Additionally, the 3.0 L F1C engine is produced under the name 4P10 by Mitsubishi Fuso for use in medium-duty commercial vehicles.