cav551:
I would be interested to read the progression of DAF’s development of the Leyland 680. I know that they initially started making it under licence and then producing their own version. It then morphed into the DK 11.6 and this engine was then developed into numerous variants and upgrades. Some were crossflow and some U flow, and then turbocharging was added. Does anyone have any detailed information of what the differences designations and dates were? ie DK, DKS, DKV, DKDT etc.
IIRC the engine was subject to major modifications about the time of the CF/XF model range with 4 valve heads and an increase in capacity.
Thank you.
Hi cav551 hopefully this is of some interest, an excerpt from Wikipedia
Oily
DAF produced their first lorry, the A30, in 1949. This lorry was upgraded in the following years. Their first attempt into the international market was a failure, the 2000DO. Their next lorry was the 1964 2600, which became a big seller with its well-equipped but practical cabin.[3] They also produced a so-called torpedo-front tractor.
In the 1970s a new modular tilting cab called the F218 was introduced on the F1600/F2000 range of vehicles. Three years later, the wider F241, which featured DAF’s characteristic three-wiper windscreen, was introduced as the DAF 2800. This design lasted until the introduction of the 95 style cab in 1987. There was also a lighter, narrower version called the F198 which was introduced in 1972 on the F1200 and F1400, but this short-lived model was replaced after only three years. 1984 DAF truck production was 13,645; this increased to 14,382 in calendar year 1985.[4] DAF was also one of the first to introduce an intercooled turbocharged diesel engine into their lorries, which in these years became very evident with their 3600. Their largest 11.6-litre (710 cu in) six-cylinder turbodiesel was based on the old Leyland O.680 motor.[5] It was to be DAF’s standard large engine long into the nineties.
DAF’s 95 series was launched in 1987, and quickly gained the coveted ‘Truck of The Year’ award. The 95 featured an all new cab developed jointly with ENASA of Spain, a revised version of the 11.6 litre ATI engine, rated at 310, 350, and 380 Bhp, and 16 speed ZF gearbox. On the Continent Eaton’s Twinsplitter gearbox was an option. A full range of axle configurations were offered, to suit every operating requirement. Much attention was paid to soundproofing - the gearlinkage for example was telescopic - in-cab noise levels on the 95 put many luxury saloons to shame. An update in 1991 saw new power ratings of 329, 364, and 401 Bhp, - a 430 Bhp variant, along with low deck tractor unit models and revised interior trim, were introduced in Spring 1992.
Two years later, after an intensive study of the ultra long haul market sector, DAF unveiled the 95.500 Super Spacecab at the 1994 RAI show. The 95 series cabin had gained height and length, and sat atop ■■■■■■■■ 14 litre N14, rated at 507 Bhp. ZF’s new Aluminium-cased 16S221 gearbox was fitted, with optional Intarder, an innovation was the hydraulic gearshift developed with Konsberg of Norway. Within an overall height of 3.85m, the Super boasted an interior standing height of 2.25m, a luxury bunk with generous stowage underneath and a full range of options included microwave, fridge, TV/Video. The 95.500 was available as a 4x2 tractor or drawbar rigid, with LHD only, though the Super Spacecab was available on 11.6 litre-engined models, and sold well. The 95.500 is now a very rare truck, which I find surprising given the original list price of £87, 650.
The basic cab design remains in production to this day, latterly as the 95XF and now the XF105, although both these developments of the original 95 are totally different machines under the skin. Other vehicles in the DAF range have included the inherited from Leyland Trucks Roadrunner (Badged DAF 600, 800, 1000 On the Continent) which evolved into the 45 Series, the cab of which was used on the 18 ton gross 55, also as a military spec 4×4.
An all-new medium to heavyweight line up debuted in late 1992, the 65, 75 and 85 utilising the same wedge shaped cab. Powered by DAF’s 6.24-litre (381 cu in), 8.65-litre (528 cu in) and 11.6-litre (710 cu in) engines, some novel styling details featured, while the 85 Series’ cab sat 10 cm (3.94 in) higher on the chassis to clear the WS engine.
A short-lived model was the 1990-93 80 Series using the T45 Roadtrain cab acquired from the Leyland Trucks takeover, fitted with the ATI driveline. Also offered for a short period was the 3200, basically a remodelled 2800 with the corporate style, three-bar grille.
There is a DAF LF45 hybrid version, which was presented by DAF at the IAA 2010 in Hannover.[6]
