Turbo Roadrunner
Page 19
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• Leyland Daf has launched a range of 108kW (145hp) versions of its Roadrunner, using the turbocharged version of its 300 Series engine, which is derived from the Cummins B Series.
The new vehicles, badged 6.15, 8.15 and 10.15, have plated weights of 6.2, 7.49 and 10 tonnes respectively. They use the 5.88 litre 310 engine which is similar to that used in the 11.15 Freighter. As installed in the. Roadrunner, it delivers 103kW nett at 2,600rpm, with 449Nm or more of torque from 1,410 to 1,970rpm. Its rated speed of 2,600rpm is some 200rpm lower than that of its lesser sisters.
The engine is connected via
a strengthened (and now servo-assisted) clutch to the Turner T5-290 gearbox as used in the existing 6.13, 8.13 and 10.13 models. In the interests of commonality on the production line, this gearbox is soon to be installed in the lower powered models as well.
Thanks to the greater power and lower rated speed of the new engine, higher rear axle ratios can be used than was previously practical. The 6.15 and 8.15 models get a ratio of 4.083;1, while the heavier 10.15 gets a standard ratio of 4.66:1 with an option of 5.125:1.
Leyland Daf claims that the better specific fuel consumption of the turbocharged 310 engine, combined with the higher gearing, means that the new models are some 5% more economical at motorway speeds than their predecessors. The weight increase from the turbocharger installation is said to be as low as 15kg: the Roadrunner is otherwise unchanged.
The price penalty of the more powerful engine ranges from £280 to £500 depending on the model: the most expensive of the new Roadrunners, the 10.15, is listed at 217,400.
fl Leyland Daf has also announced the prices for its new 95 Series models, which went on sale this week. The cheapest 4 x 2 day-cabbed 95.310 is £37,625, and the sleeper-cabbed 4 x2 95.380 is priced at 243,500. The 6x2 models range from £43,300 to 247,220, while the 95.380 in 6x4 trim costs £53,580. The single-berth top sleeper carries a premium of £1.025, while the Space Cab option adds £3,250 to the normal sleeper price.