81.   The new engines, though, are unproven.

82.   The new Maxima engine is smaller dimensionally and weighs considerably less than the old, but it produces more torque and consumes less fuel.

83.   The old Soviet sports machine is in dire need of a new engine.

84.   The new engine would produce less take off noise.

85.   The new engines and propellers are quieter and more powerful, according to the Air Force.

86.   The new engines, using low-cost hydrogen peroxide, were the third most powerful ever tested, Beal said.

87.   The Pratt-GE partnership is in competition with Rolls-Royce to build the new engines.

88.   The upgrade would give each helicopter a four-bladed rotor, new engines and a new cockpit.

89.   Then, with a new engine for practice Saturday, he lost oil pressure.

90.   There are new engines to improve mileage and emissions.