Fiat 100 engine
Fiat 100GL.000 engine in a Fiat Cinquecento
Overview
ManufacturerFiat
Production1955–2008
Layout
ConfigurationInline-4
Displacement633–1,050 cc (38.6–64.1 cu in)
Cylinder block materialcast iron
Cylinder head materialaluminium
ValvetrainOHV 2 valves x cyl.
Combustion
Fuel systemCarburettor
Single-point injection
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power output21.5–70 PS (15.8–51.5 kW)
Emissions
Emissions control systemsCatalytic converter (since early '90s)
Chronology
SuccessorFiat FIRE

Designed by Dante Giacosa, the Fiat 100 engine first appeared in a 633 cc (38.6 cu in) form in the all-new Fiat 600 in 1955. The in-line four-cylinder engine comprised an iron block and an aluminium cylinder head with pushrod actuated valves. The engine was produced at Fiat's Mirafiori (Turin) plant, and then at Bielsko-Biała, and remained in production until 2000, used in Fiat Panda and Fiat Seicento in its last 899 cc (54.9 cu in) capacity version fitted with SPI single-point injection and hydraulic tappets, although slowly being phased out starting from 1985 in favour of the new Fiat FIRE engine. It was also produced until 2008 in the Zastava plants in Kragujevac.

Engine specifications

The 100-series engine has a three main bearing crankshaft, a cast iron block and an aluminium cylinder head with an integrated intake manifold. The camshaft was placed in the block and was chain driven. There were 2 overhead valves per cylinder, actuated by an OHV valvetrain. Early versions were fed by a carburettor, but single point fuel injection with catalyst would appear in the early '90s to fulfill anti-pollution laws, along with electronic Distributorless Ignition System.

List of 100 series engines

Applications

List of vehicles utilising variations of the Fiat 100-series engine.

(1962 - 2012)

  • Yugo Koral (1978-2008)
  • Zastava 600 (1961)
  • Zastava 750 (1962 - 1985)
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