Sofim 8140 engine

The 8140 was a diesel engine made by Sofim for cars. 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. Turbocharging the original engine, the design of which was finished in 1974, was impeded until 1985 due to restrictions of the original design. Heat flux issues with the aluminium head and swirl chambers were eventually overcome, but did slow down development. Before entering the market, Fiat tested the Sofim engine in its 131 model during the 1977 London-Sydney Marathon. First direct injection models also appeared in the mid-1980s. Additionally to the Fiat designation 8140 some engines got a Renault tag (S8 for indirect injection, S9 for direct injection).

The 8140 was a diesel engine made by Sofim for cars. 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. Turbocharging the original engine, the design of which was finished in 1974, was impeded until 1985 due to restrictions of the original design. Heat flux issues with the aluminium head and swirl chambers were eventually overcome, but did slow down development. Before entering the market, Fiat tested the Sofim engine in its 131 model during the 1977 London-Sydney Marathon. First direct injection models also appeared in the mid-1980s. 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 four-cylinder , called the Sofim 8144.65. Alongside the 2.4-litre version it was used in light commercial vehicles like the Saviem SG2, the first-generation Fiat/Iveco Daily (also marketed as the OM Grinta, Alfa Romeo AR8 Unic Daily, and Magirus Daily), as well as passenger cars like the Fiat 131 and 132 models. It also saw use in the Fiat Campagnola.

2.4 L version

The original 2.4 L big block displaces , with a bore and stroke of .

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 .

2.8 L version

The 2.8 L displaces 2800 cc having a larger bore and stroke of .

F1A/F1C

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. The 3-liter version is also built by Mitsubishi Fuso for use in their medium-duty commercials, under the name 4P10.

References

Text derived from https://en.wikipedia.org/w/index.php?oldid=1362556503 under CC BY-SA 4.0; modifications have been made.