Motor Car History
 Veteran - Vintage - Classic - Modern
Motor car history
Understanding the Automobile
Toggle Navigation
  • Home
  • Makes and models
  • Motor car History
  • Motor Car Guide
    • Induction & Exhaust
    • Tyres wheels Brakes
    • Vehicle Body types
    • Electrical & electronic
    • Gearbox & Drivetrain
    • Engine Components
    • Suspension Types
    • Engines
  • Trivia
    • Advertising
    • Race events
    • Film & TV
    • Museums
  • links
    • Advertise your business
    • About us
    • Help with a donation
  • Log in
  • Register
  • Advertise
  • You are here:  
  • Motor Car
  • Motor Car Guide
  • Engines Makes
  • Fiat Engines
  • Fiat 124 series engine (1966-1999)
  • Motor Car
  • Motor Car Guide
  • Engines Makes
  • Fiat Engines
Categories
Fiat Engines | Innocenti Engines
Engines
1960s
Italy

History

Fiat 124 series engine

 

1981 Fiat 127 Diesel engine

Manufacturer Fiat / Fiat Automóveis (Brazil)
Production 1966–1999
Configuration OHV 2-valve inline-four SOHC 2-valve inline-four SOHC diesel 2-valve inline-four
Displacement 994–1,585 cc
Cylinder block alloy cast iron
Cylinder head alloy aluminium

 

Designed by Aurelio Lampredi, the Fiat 124 engine first appeared in the all-new Fiat 124 in April 1966. The in-line four-cylinder engine comprised an iron block with an aluminium cylinder-head with pushrod actuated valves. The belt-driven design was ahead of its time when introduced. The engine remained in production until the 1990s in Latin America, although European production ended with the Fiat 131 in 1984. It did have a longer life in its twin-cam iteration, which continued in production until 2000. While originally of an overhead valve design, an overhead cam version was developed for Fiat's Brazilian arm in 1976 and in 1981 it was added to the facelifted 131 in Europe as well. The capacity was initially 1,197 cc (in the Fiat 124), but eventually ranged between 994 cc and 1,585 cc. There was also a 1.3 liter diesel iteration, only built in Brazil but exported to Europe as well. The last versions of this engine to be built was the one-liter engine developed in Brasil for the Fiat Mille.

Engine specifications

The Fiat 124 series engine was produced in a number of configurations differing in stroke and bore but maintaining a standard bore-spacing. The first model (124 A.000) was near square, using a bore of 73.0 mm and a stroke of 71.5 mm to produce a displacement of 1,197 cc. A larger 1,438 cc version arrived in October 1968, in the 124 Special. This has an 80 mm bore. The bore was increased to 76 mm to give a displacement of 1,297 cc for the 131, which was also available in a 1.6 liter version (84 mm bore). A variety of other bores were available, and the Brazilian engine was also developed with both short and long-stroke versions of 994 and 1,497 cc respectively.

The 1.3 was later bored out by 0.1 mm, to nudge the displacement above 1.3 liters. This allowed Italian motorists to drive a full 140 km/h (87 mph) on the autostrada, rather than the 130 km/h (81 mph) which was allowed for cars under 1.3 litres.

The 124-series engine has five main bearings, an iron block and an alloy head. Intake and exhaust are both located on the right-hand side of the engine. The Brazilian engine was the first overhead cam version developed, first shown in autumn of 1976. It took nearly five years before the Italian-built engines were changed to such a design. The Brazilian engine, which first appeared in a 1.05 litre version, has chrome-treated exhaust valves with stellite seats, for increased durability. The Brazilian engines were also exported to Europe in large numbers, both for the 127, Ritmo, and the later Uno (diesels only) as well as a few Milles/Dunas/Elbas sold by Innocenti.

The diesel, originally of 1,301 cc, was later bored out to 78 mm (for a total displacement of 1,367 cc) and was also available turbocharged. There was also a two-litre pushrod version (6132 AZ 2000) for the 1974 to 1982 Fiat Nuova Campagnola, this has the 84 mm bore of the 1.6 but combined with a 90 mm stroke.

Applications

List of vehicles utilising variations of the Fiat 124-series engine (incomplete).

 Fiat

OHV
  • Fiat 124: 1966-1974
  • Fiat 131 Mirafiori: 1974-1981 (longer for the Weekend/Estate)
SOHC
  • Fiat 131 Mirafiori: 1981-1984
"Brazil" engine
  • Fiat 127: 1977-1987 (export version for Europe)
  • Fiat 147/Spazio: 1976-1987
  • Fiat Oggi: 1983-1985
  • Fiat Uno/Mille: 1984-199? (Latin American version)
  • Fiat Prêmio/Duna/Elba: 1985-199?
  • Fiat Ritmo: 1979-
  • Innocenti Mille: 1994-1997
Diesel engine
  • Fiat 127: 1981-1987 (export version for Europe)
  • Fiat 147/148/Spazio: 1981-1990 (also built in Argentina)
  • Fiat Uno: 1983-1989 (Europe),

Technical

  • Fiat 124 series engine Technical details and specifications (1966-1999)

    1.6L petrol (1975-1981)

    No. of cylinders 4/OHV
    Capacity 1585 cc
    Firing order 1-3-4-2
    Compression ratio 9.2:1
    Suitable for unleaded petrol No
    Fuel system Make Weber Type 32 ADF
    Ignition coil Make Marelli Type BE 200A
    Distributor Make Marelli S 147A
    Fuel system pressure 0.2-0.25 bar
    Oil pressure 3.5 bar
    Thermostat opens 81-85°C
    Starter motor Make Marelli Type E84-8kW
    Maximum cranking amps 122-149A
    Alternator Make Marelli Type AA125
    Regulated voltage 13.9-14.5V

    © Motor car History

     

Registered: Advanced information, Maintenance and Service Guides to download and save.

Members Only !  >>  Register here. <<

Advanced Maintenance and Service Guides to download and save

Service

  • Fiat 124 series engine Service Guide (1966-1999)

    1.6L petrol (1975-1981)
     
    Distributor Contact breaker gap 0.4mm
    Spark plugs Electrode gap 0.6-0.8mm
    Spark plugs Original equipment Marelli CW7LP
    Spark plugs Make Bosch W7DC
    Spark plugs Make Champion RN9YCC
    Spark plugs Make NGK BP6ES
    Valve clearance -INLET 0.20mm check cold 
    Valve clearance -EXHAUST 0.20mm check cold
    Drive belt size - alternator 9.5x813mm
    Drive belt tension - alternator 10-14mm
    Engine oil grade - moderate climate 15W/40 SAE
    Engine oil change 4.0 litres
    Cooling system 7.6 litres

    © Motor car History

Related

motor car on you tube

Also read (Members)
  • FIAT 100 engine (1955 to 2000)
  • Fiat FPT 420F3 Engine (2008-)
  • Fiat FireFly engine (2016-)
  • Peugeot DW engine (1999-)
Fiat 148 | Innocenti Related | Fiat Ritmo | Fiat Duna | Fiat Uno | Fiat Oggi | Fiat 147 | Fiat 127 | Fiat 131 | Fiat 124 | Petrol Engines | Straight-4 Engines | Diesel engines

Can’t see this article ?  >>  Register here. <<

Read more in this section (Registered)

Peugeot EW engine (1999-2011)
Peugeot EW engine (1999-2011)
Read more...
Fiat JTD engine (1997-)
Fiat JTD engine (1997-)
Read more...
Fiat Sofim Engine (1977-2008)
Fiat Sofim Engine (1977-2008)
Read more...

Engines types

  • Petrol Engines
  • Diesel Engines
  • Straight 6 Engines
  • V6 engines
  • V8 Engines
  • Straight-4 Engines
  • Straight-5 Engines

Back to Top

© 2023 Motor Car History