Ford F3-152 diesel engine 3 cylinder
Manufactured by the Ford Motor Company Dagenham, UK
Indirect injection
Fitted to tractors Fordson Dexta
Compression ratio
Brake HP
17.4 to 1
General data
Bolt torque values
Cylinder head
Main bearings
Conrod bearings
Engine measurements
Main bearing journal
Big end bearing journal
Small end bush ID
Gudgeon pin OD
Piston diameter
Valve clearances (Cold)
Valve seat angle

45 degrees
Engine peripherals
Starter motor
Injector pump
Injector break pressure

Firing order
Lucas M45G (Bendix 10 teeth)
120 atmospheres
Lucas C39P/2 (12 volt)

The Fordson Dexta & Super Dexta are fitted with Ford motors & not Perkins as widely believed. Perkins were developing a P3 engine which did not meet Fords requirements. This was the P3.144. The engine fitted to the Dexta was an F3.144. The Super Dexta engine was the F3.152. Ford required an inline injection pump and other changes which Perkins agreed to carry out and the deal was struck. All the major castings were made at the Ford factory at Dagenham; Perkins only made the smaller items like manifolds and assembled the engine. Engines were built as required and transferred from the Perkins Factory each day. Lorries took engines from Peterborough to Dagenham and returned to Peterborough with the machined castings for the next days assembly. No stocks of the engine were held at either company. When Ford discontinued the Dexta the engine was then sold as a Perkins P3.144 to companies like Massey Ferguson to fit in the MF 35 etc. Perkins books from the factory have no mention of the P3.144 until after Dexta production ceased."

"It seems that a lot of people have not understood the tie-up between Ford and Perkins. Would you give full control of your little tractor engine to your rival? Massey Ferguson bought Perkins and Ford needed to retain control of its power unit."

"The P3.144 engine was a replacement for P3 engines and was rated at 35hp at 2000 rpm. This engine used the CAV in line pump rather than the Simms pump and was eventually fitted with the CAV DPA pump when the bore size was increased to 152. Perkins assembled the F3 engines and designed some of the parts but Ford had a far higher input than they were given credit for. Perkins assembled 154,322 F3.144 engines and 64,496 F3.152 between August 1957 and October 1964."
The following Dexta models were made:
The 1957/1958 standard model (F3.144 engine, diesel), blue/orange, with horizontal (underswept) exhaust.
The 1957/1958 standard model (F3.144 engine,diesel), blue/orange, with vertical exhaust.
The 1958 industrial model (F3.144 engine,diesel), blue/orange, with horizontal (underswept) exhaust; this Dexta was finished
by County Commercial Cars at their Fleet factory. It had a hydraulic braking system, front-wheel fenders, rear-view mirrors
and came standard with lighting and a speedometer (which were optional at the time on the agricultural Dextas). These
adaptations permitted the tractor to operate on public roads on non-agricultural licenses.
The 1958/1959 petrol Dexta <l >, blue/orange, with vertical exhaust (see below for further details).
The 1960 restyle (F3.144 engine,diesel), blue/orange, with vertical exhaust; this Dexta had the headlights incorporated into
the grille. Also, the side Fordson Dexta decals on the bonnet first appeared (before then, only the nose decal was used). All
tractors came with vertical exhausts from now on. From April 1962 onwards, Simms Minimec fuel pumps were used.
The 1962 Super Dexta (F3.152 engine, diesel), blue/orange; the Super Dexta emerged with a different nose bonnet and had
more power due to its bored-out engine.
The 1963 standard model (F3.144 engine, diesel), blue/grey; the first Dextas with the blue/grey colour scheme.
The 1963 new performance Super Dexta (F3.152 engine, diesel), blue/grey; these had their output power increased to 44.5
HP due to increased engine revolutions up to 3,000 rpm. They were only made from June 1963 until September 1964.
The Diesel 2000 for US export - this is the name given to the Super Dexta in the USA.
The 1963 Dexta Special (Germany only); this Dexta was specially made for the German market. It featured broad rear-wheel
fenders with a seat, direction-indicators, horizontal (underswept) exhausts and decals reading Fordson Dexta Special. There
were also a number Super Dextas made for the German market with the same characteristics.
The Manuel/Roadless 4WD Dexta <l >; see below for details or click link.
The Narrow Dexta; this one had a minimum width of only 52" and a maximum of 76".
Please note that there appear to be quite a few Dextas out there that do not seem to fall within one of these categories! First, a
number of 'transition' units were made during periods of change-over at the plant (and to use up old parts that were still in stock).
Second, many Dextas that have survived over the years have been kept running by using parts from other Dextas, resulting in 'mosaic'
tractors. This can also make it more difficult to date the tractor properly (see Serial Numbers and Production Dates <serial.htm>).
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