Another note regarding the 2.7S with custom intake.....this engine was reportedly rebuilt and then sat for 2 years or so......as shown above, it had some valve adjustment problems....and initial leak-down was very bad......after fixing the valve adjustments I decided to fire up the engine, do the initial tune and see if the leak-down would improve...sometimes, after sitting for an extended time, the carbon will harden and hold valves open ....and after heat cycling the engine, that eliminates that situation....and that is what happened here...........after a few days of running the engine until warm ....the leak-down shows significant improvements......
Still has one problem cylinder....but I suspect that #5 has rings that are not fully seated and may improve also, once run in the car for a while......
https://www.youtube.com/watch?v=zQzk4oflG-k
regards,
al