Also some sources points out the cost of production per engine as much as 1.5 mil.

The maximum thrust is classified, though most sources place it at about 35,000 lbf (156 kN) per engine.

The weight with the power car was over three tons per engine.

The cost of the engine was also reduced, falling to £605 per engine.

The expected propulsion plan operating hours per engine was 2400 hours per year.

Water injection was fitted to some Valiants and increased takeoff thrust by about 1,000 lb (450 kg) per engine.

Sales have increased by 50 percent in the last two years, and more important, productivity per engine per employee has doubled.

Bonus points are also awarded - one point per engine - for running the same engines in race 2 for two consecutive Grand Prix.

The average increase in cost for the engines would be 10-15 percent or $700 per engine.

The standard layout was to carry two 110-gallon (500 litre) fuel tanks, one per engine.