On Sun, 21 Dec 2008 09:03:14 +0000, Nick Hunt wrote:

The engines fitted to the Tristar were Rolls-Royce RB-211's, also used
on some varients of Boeing's 747.

The RB211 was developed for the Tristar, and in the process drove RR into
bankruptcy, which also split the car-maker from the aero-engine maker.
There is much more about this engine at:
http://en.wikipedia.org/wiki/Rolls-Royce_RB211