Delta had experience with the DC-8-70 re-engining and in fact accomplished conversion of a dozen of their own aircraft (under license from Cammacorp, the STC holder), and proceeded to convert several dozen other DC-8's for worldwide customers.
Delta did not do the engineering for the DC-8 re-engining they installed kits they bought from Cammacorp.
I don't think they saw a TriStar conversion as an overwhelming challenge.
All I can say is you have no idea what your talking about!
If the re-engining could have been accomplished it would have been. It was investigated by Lockheed more than once and each time it was determined to be technically and econmically unfeasible.
Do you actually think that Delta could accomplish the engineering required for an L-1011 re-engining program when Lockheed couldn't. I worked with Delta engineering for years, they were not equipped and did not have substantiating data that would have been required for such an undertaking.
Their average RB life on-wing was a few hundred cycles.
I wonder why they never reported that to Lockheed? I think that it they were having so many engines problems we would have heard about it in the L-1011 support center?
How much L-1011 experance do you actually have? I have read other posts you made where you made outragious statements about the TriStar? As for me I was there when s/n 1001 was placed in the wing mate jig. I was in L-1011 product support for over over twenty (20) years and have over thirty (30) years on the program.