The new cam timing system relies on forces generated by the valves, rather than by oil pressure. The oil pump has been decreased in size and relocated as a result, reducing engine length by 0.94-in. These new technologies allow Jaguar to raise the compression of the engine to 9.5:1 (up from 9.1:1 on the 4.2L). Service intervals have been lengthened to 15,000 miles as well.
To transmit the engine's enthusiasm to the ground (and the driver), Jaguar employs two new electronically controlled systems in the XFR. The first, Active Differential Control, varies torque between the rear wheels depending on the surface. It attempts to prevent excessive wheel slip, but does not impede slippage with brake application. The press materials read: "The traditional, mechanical differential can compromise stability under hard applications of power, demanding more corrective input from the driver." Translation: This Jag allows easy power slides.
2010 jaguar xfr |
2010 jaguar xfr
2010 jaguar xfr
2010 jaguar xfr
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