Land Rover Forward Control Models Specs
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Engines. UK IIa models had to make do
with the 2.25 petrol only throughout the whole of the run. There were
one or two special order 2.6's, but thats it. the 2.6 was, however, the
mainstay for the export market. To the best of my knowledge, the diesel
was never offered in the IIa. With the IIb, things swapped round a bit.
The UK got the 2.6 petrol as standard (the 2.25 became an option),
however export models now had the 2.25 as standard with the 2.6 as an
option. All markets also got the 2.25 diesel as well. The manufacturing
dates on the engines are also for bonneted control models, and nor
forward controls.
Gearbox. 1st gear on all models is straight
cut (minor detail). The ratios were also revised early on in the run.
The ratios you state are for suffix C and on boxes. The earlier (up to
B) boxes had ratios of direct, 1.377, 2.043, 2.996 and 2.547. I can't
remember exactly when the change over was, but it was around 1963/64.
Transfer box. The ratios you give are for
the '1 ton' box, which was, in fact, only used on IIb models. IIa models
used the standard bonneted transfer box. Ratios for up to suffix B were
1.148 & 2.888. Suffix C on were 1.148 & 2.350.
Axles. From very early on in the IIa run,
ENV axles were optional. I'm not certain, but they might even have
become standard by the end of the run. The ENV axles used on the IIb are
also wider than those used on IIa models. Also, the fron axle was not
moved. It is the rear axle that moved backwards, and then by only
3/4", giving a true wheelbase of 109.75".
Suspension. You forgot to add that IIb
models have an anti roll bar at the front, and the rear springs are also
moved out by compared to the IIa models.
Dimensions. The track given is for a IIb.
The track of the IIa is 1.31m. The width if both models is the same at
1.92m. Kerbweight for the IIb is 1970kg for the 2.6 petrol, and 2043kg
for the 2.25 diesel. For both the IIa and IIb models the payload is
1525kg on road, 1270kg off road.
Mark Rumsey
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Series
IIA (109") |
Series
IIB (110") |
| Date of
manufacture |
1962
- 1966 |
1967-1972 |
| Chassis
suffix-letter |
a
1962 - mid 1963
b mid 1963 - 1964
c 1964 - mid 1965
d mid 1965 - 1966 |
a
1967 - mid 1968
b mid 1968 - 1969
c 1969 - mid 1969
d mid 1969 - 1972 |
Dimensions
(track, width, length, mass)
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(1.36m;
1.74m; 4.9m, 1948kg)
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(???)
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Engines
(Type, cc, stroke, compression ratio, power/torque & period) |
2.25l 4cyl petrol
(OHV - 2286cc - 90.5x88.9mm - 7:1 - 3 bearing - 50Kw@4250rpm,
157Nm@2500rpm - 1958-1979)2.25l
4cyl diesel
(OHV - 2286cc - 90.5x88.9mm - 23:1 - 3 bearing - 46Kw@4000rpm, 140Nm@1750rpm - 1961-1979)
2.6l 6cyl petrol
(IOE - 2625cc - 77.8x92mm - 7:1 - 67Kw@4500rpm , 178Nm@1500rpm - 1964 -1972)
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Fuel system
(carburettor/injector & pump) |
2.25
petrol
(solex or Zenith - mechanical)2.25
diesel
(CAV DPA distributor type - mechanical high pressure)
2.6 petrol
(SU HD6 - electric) |
Gearboxes
(name, type & year) |
Single
helical constant mesh, 3rd & 4th syncromesh - |
Gearbox ratios
(all given to 1)
(4th, 3rd, 2nd, 1st, reverse) |
(direct,
1.512, 2.22, 3.6, 3.02)
see
gearbox ratios
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Transfer box
ratios
(high, low) |
(1.53,
2.92) |
Clutch
(size & type) |
(9
1/2" ,
hydraulic) |
Axles
(differential, Type & ratios) |
Front
(Rover)
(spiral bevel, enclosed UJ's, 4.7:1)Rear
(Rover)
(spiral bevel, floating shafts, 4.7:1)
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Front
(ENV)
(spiral bevel, enclosed UJ's, 4.7:1)
Moved forward by 1"Rear
(ENV)
(spiral bevel, floating shafts, 4.7:1)
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| Suspension |
Semi
eliptic understrung |
Semi eliptic
front understrung
rear on top of axle |
Steering
(Type & ratio) |
Recirculating
ball worm and nut, 19.6:1 straight ahead, 29.9:1 full lock) |
Brakes
(Type, drum, shoe) |
hydraulic
servo assisted, 11", 3" front, 2 1/4" rear |
| Max
speed &
consumption |
2.25
petrol
90 km/h, 17-21 l/100km2.25
diesel
80 km/h, 14-17 l/100km
2.6 petrol
100 km/h, 20-25 l/100km |
| Body style
characteristics |
Headlight
mounted high up, with indicator above and park light below
Rounded rear mud guards |
Headlight
mounted low down, with indicator and park light above
Squared off rear mud guards |
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