Sofim 8140 engine explained

Sofim 8140 engine
Aka:Renault S-Type engine
Valvetrain:SOHC 8v
Manufacturer:Sofim
Production: -

The 8140 was a diesel engine made by Sofim for automobiles. Originally introduced as a swirl chamber, naturally aspirated diesel it was mostly used in commercial vehicles worldwide.

At the time of introduction, the 8140's overhead camshaft layout (driven by a toothed timingbelt) was unexpected in a diesel engine, which were typically overhead valve designs.[1] Turbocharging the original engine, the design of which was finished in 1974, was impeded until 1985 due to restrictions of the original design.[2] Heat flux issues with the aluminium head and swirl chambers were eventually overcome, but did slow down development.

First direct injection models also appeared in the mid-eighties.

Additionally to the Fiat designation 8140 some engines got a Renault tag (S8 for indirect injection, S9 for direct injection).

2.0 L version

In the early beginning there was a 2.0-liter (1,995 cc) four-cylinder 65 PS (48 kW), called the Sofim 8144.65. Alongside the 2.4-liter version it was used in light commercial vehicles like the Saviem SG2, OM Grinta, and the Fiat/Iveco Daily, as well as passenger cars like the Fiat 131 and 132 models.[3] [4] It also saw use in the Fiat Campagnola.

2.4 L version

The original 2.4 L big block displaces 24451NaN1, bore x stroke was 93 x 90 mm.

Engine typeDisplacement ccMax power
PS (kW) at rpm
Max torque
at rpm
Layout and number of cylindersValve /number of valvesCarYears of production
8140.61244572 (53)/42001470NaN0 /2400R4, IDI, naturally aspiratedOHC/8Fiat 131
Fiat 132
Fiat Argenta
Fiat Campagnola
Fiat Ducato
Iveco Daily
1978-1983
1978-1981
1981-1985
1979-1987
1981-1989
1978-1990
S8U 720/722244571 (52)/42001500NaN0 /2200R4, IDI, naturally aspiratedOHC/8Renault Trafic
Renault Master
1981–1989
8144.21244592 (68)/38002160NaN0 /2200R4, DI, turbochargedOHC/8Fiat Argenta
Fiat Ducato
Iveco TurboDaily
1983-1985
1981-1989
1980-1990
S8U 750244592 (68)/38002160NaN0 /2200R4, IDI, turbochargedOHC/8Renault Master B901986–1990
8144.912445101 (74)/41002170NaN0 /2300R4, IDI, turbocharged, intercooledOHC/8Fiat Croma
Lancia Thema
1985-1989
1984-1988

2.5 L version

In 1990 the 2.5 L was introduced with a longer stroke, increased by 2 mm to 92 mm. The bore remained unchanged at 93 mm, this version displaces 24991NaN1.

Engine typeDisplacement ccMax power
PS (kW) at rpm
Max torque
Nm (lb.ft) at rpm
Layout and number of cylindersValve /number of valvesCarYears of production
8140.072499/4200
/4000
/2200
/2400
R4, DI, naturally aspiratedOHC/8Fiat Ducato
Iveco TurboDaily
Renault Trafic
Renault Master
Renault Messenger
Tarpan Honker
1989-1994
1990-1994
1990-1994
1990-1997
1990-1999
1991-1996
8144.672499/42001620NaN0/2200R4, IDI, naturally aspiratedOHC/8Fiat CromaFiat Ducato1989–19961989-1994
S9U
(8140.67)
2499/40001550NaN0/2200R4, IDI, naturally aspiratedOHC/8Renault Master
Opel Movano
Nissan Interstar
1997-2000
1998-2000
1999-2000
8140.672499/42001640NaN0/2400R4, IDI, naturally aspiratedOHC/8Fiat Ducato1994–1999
8140.272499/3800
/3800
2160NaN0 /2000
2250NaN0 /2000
R4, DI, turbochargedOHC/8Fiat Ducato
Iveco TurboDaily
Renault Messenger
Tarpan Honker
1989-1994
1989-1994
1989-1996
1991-1996
S9U
(8140.27)
2499/3800
/3800
2000NaN0/2200
2050NaN0/2200
R4, DI, turbochargedOHC/8Renault Master1989-1990
1990-1994
8140.472499/38002450NaN0/2000R4, DI, turbocharged, intercooledOHC/8Fiat Ducato
Iveco TurboDaily
Renault Messenger
1994-2002
1994-2000
1994-1996
8144.972499/39002450NaN0/2200R4, IDI, turbocharged, intercooledOHC/8Fiat Croma
Lancia Thema
1989–1996
S8U-762
(8144.97)
2499/40002400NaN0/2000R4, IDI, turbocharged, intercooledOHC/8Renault Safrane1992–1996

2.8 L version

The 2.8 L displaces 2800 cc having a larger bore and stroke (94.4 x 100 mm).

Engine typeDisplacement ccMax power
PS (kW) at rpm
Max torque
at rpm
Layout and number of cylindersValve /number of valvesCarYears of production
8140.63279987 (64)/3800
85 (63)/3800
1800NaN0 /2000R4, IDI, naturally aspiratedOHC/8Fiat Ducato
Iveco Daily
Renault Mascott
1998-2000
1996-1999
1999-2004
8140.232799103 (76)/3600
106 (78)/3600
2400NaN0 /1900
2350NaN0 /1900
2500NaN0 /1800
R4, DI, turbochargedOHC/8Iveco Daily
Renault Messenger
Renault Mascott
1996-2000
1996-1999
1999-2004
S9W
(8140.43)
2799115 (84)/36002600NaN0 /1800R4, DI, turbocharged, intercooledOHC/8Renault Master
Opel Movano
Nissan Interstar
1997-2000
1998-2000
1999-2000
8140.432799118 (87)/3600
122 (90)/3600
2700NaN0 /1800
2850NaN0/1800
R4, DI, turbocharged, intercooledOHC/8Fiat Ducato
Citroën Jumper
Peugeot Boxer
Iveco Daily
1997-2000
1997-2000
1997-2000
1996-2000
8140.43S2799127 (93,5)/3600
125 (92)/3600
3000NaN0 /1800
2900NaN0/1800
R4, DI, Common Rail, turbocharged, intercooledOHC/8Fiat Ducato
Citroën Jumper
Peugeot Boxer
Iveco Daily
Renault Mascott
2000-2005
2000-2005
2000-2005
2000-2006
2000-2004
8140.43N2799146 (107)/36003100NaN0 /1500
3200NaN0 /1500
R4, DI, Common Rail, turbocharged, intercooled OHC/8Fiat Ducato
Citroën Jumper
Peugeot Boxer
Iveco Daily
Renault Mascott
2000-2005
2000-2005
2000-2005
2000-2006
2000-2004

Today

After continuous development these engines are nowadays known as F1A (2.3 L) and F1C (3.0 L), available for marine and industrial use from Fiat Powertrain Technologies (FPT) and CNH Industrial (since 2012) respectively.

Notes and References

  1. Book: Quattroruote: Tutte le Auto del Mondo 77/78 . Fiat 131 Mirafiori: da 3 anni è un successo . Fiat 131 Mirafiori: a three-year success . Editoriale Domus S.p.A . 1977 . 205 . Milano . it .
  2. TRUCK . September 1982 . truck982 . 27 . Kennett . Pat . Intertruck: Italy . Norbye . Jan . London, UK . FF Publishing Ltd .
  3. Web site: 1981 FIAT 131 DIESEL SUPER 2500. 2012-01-01. automobile-catalog.com. dead. https://web.archive.org/web/20160506015656/http://www.automobile-catalog.com/car/1981/713060/fiat_131_diesel_super_2500.html. 2016-05-06.
  4. Web site: FIAT 131 CL DIESEL 2000 (1978). 2012-01-01. automobile-catalog.com. dead. https://web.archive.org/web/20120106213704/http://www.automobile-catalog.com/auta_details1.php. 2012-01-06.