• WhichTractor size: Utility
  • No lab test on file
  • 1961–1965
  • 40,599 built

WhichTractor size, not the maker’s category

David Brown 990 Implematic Engine specs

10 engine values on record for the 990 Implematic.

Engine power, claimed · gross or net not stated

52.0 hp

38.8 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “David Brown 990 Implematic”, claimed

This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.

What engine is in a 990 Implematic?

A 990 Implematic has a DAVID BROWN AD 4/47 A, a 4-cylinder 3.04 L diesel engine.

Engine — DAVID BROWN AD 4/47 A specifications
Make & modelDAVID BROWN AD 4/47 A
FuelDiesel
Cylinders4
Displacement185.8 ci · 3.04 L
CoolingLiquid-cooled
Maximum torque141 lb·ft · 191 N·m
Maximum torque speed1,300 rpm
Cylinders4
Displacement3.2 qt · 3.0 L
Bore3.6 in · 92.1 mm
Stroke4.5 in · 114.3 mm
Rated engine speed2,200 rpm

Source · Traktorenlexikon, “David Brown 990 Implematic”

Sources and how this page was built

10 engine values from Traktorenlexikon, “David Brown 990 Implematic”.

Sources checked

14 SEP 2026

Spotted an error?

Sources

Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution

  1. Traktorenlexikon: David Brown 990 Implematic — CC BY-SA 4.0, WIKIBOOKS-TL-115966 · revision 1001700. Wikibooks contributors (Traktorenlexikon). Original document