How come the GAF never incorporated the smokeless mod for their J79s full time? I understand they had it as a 'war only' option, did the smokeless mod increase wear and tear on the engines due to the higher combustion temperatures that much that it was not worth it during peacetime?
As an aside, look at almost any footage of current JASDF F-4's and you'd think they didn't have J79s, they're as clean a whistle!
-RP