Oldsmobile Diesel engine

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Oldsmobile Diesel
GM Olds' Diesel logo on a Buick.jpg
Overview
Manufacturer Oldsmobile
Production 1978–1985
Combustion chamber
Configuration
Displacement
  • 261 cu in (4,280 cc)
  • 263 cu in (4,310 cc)
  • 350 cu in (5,737 cc)
Cylinder bore
  • 3.5 in (89 mm)[1]
  • 4.057 in (103.0 mm)[1]
Piston stroke
  • 3.385 in (86.0 mm)[1]
Cylinder block alloy Cast iron
Cylinder head alloy Cast iron
Valvetrain Overhead valve
Compression ratio
Combustion
Fuel system Indirect injection
Fuel type Diesel
Oil system Wet sump
Cooling system Water-cooled
Chronology
Successor Detroit Diesel V8 engine

Oldsmobile produced various Diesel engines from 1978 to 1985. Sales peaked in 1981 at approximately 310,000 units, which represented 60% of the total U.S. passenger vehicle Diesel market, but this success was short lived. Sales quickly declined over the next several years as gasoline prices dropped. Additionally, the Oldsmobile Diesel had gained a reputation for unreliability and anemic performance that damaged the North American passenger Diesel market for the next 20 years.[2][3] Nonetheless, the strong blocks continue to see use in petrol-powered race engines.[4][5]

LT6[edit]

The LT6 is 4.3 liter V6 which was produced in limited numbers from 1982 to 1984. Power was rated at 85 bhp (63 kW) @ 3600 rpm and 165 lb·ft (224 N·m) @ 1600 rpm.

Applications:

LT7[edit]

The LT7 is a transversely-mounted 4.3 liter V6 which was produced from 1982 to 1985. Power was rated at 85 bhp (63 kW) @ 3600 rpm and 165 lb·ft (224 N·m) @ 1600 rpm.

Applications:

LS2[edit]

The LS2 is a front wheel drive version of the 4.3 liter V6.

Applications:

LF7[edit]

The LF7 is a 260 cu in (4.3 L) V8 putting out 90 hp (67 kW) and 160 ft·lbf (220 N·m) torque.

Applications:

LF9[edit]

The LF9 is a 350 cu in (5,737 cc) diesel V8 produced from 1978 to 1985. Earlier versions and those used in pickups produced 120 hp (89 kW) and 220 ft·lbf (300 N·m) torque, while later versions produced 105 hp (78 kW) and 205 ft·lbf (278 N·m) torque.

Applications:

Problems due to water in fuel[edit]

Large volumes of diesel fuel containing water or foreign particles were sold around the time of the introduction of the Oldsmobile diesel engines.[4]

See also[edit]

References[edit]