@410Fortune - Regarding the manual tensioners that fit the 4.0L SOHC, I like what you say about them, i.e., "set 'em and forget 'em for rattle-free startups." One question: How does one know what "pressure/tension" to set them at? I'm up for installing a pair, but I have no idea how to determine the tension to set them at. Please advise. Many thanks.
My install steps for manual timing tensioners
Use this tensioner at your own risk
Its not a fix all
1...Disassemble the tensioner and put a bit of oil in t so the o ring can move around when you adjust
>>>>>Only turn the engine clockwise <<<<<
2...Set engine to top dead center before installing !!!!!
3...Adjust the tensioner most all the way loose ...or in
4...Then install it into the head
5...Tighten the tensioner adjuster 10mm with your fingers !!!!!!
6...Use your hand and a 10mm socket to turn in the adjustment screw with 2 fingers till it stops
........Do not use a ratchet !!.......<<<<<<<<<<
7...Now have someone turn the engine by hand using the crank bolt clockwise till you feel the adjusting screw get looser
Then adjust again ...with your fingers ...!!!!
8...Now disconnect the crank sensor
9...Have someone crank the engine with the starter
While you keep trying to screw in the adjustment in by hand with 2 fingers
It will screw in a little at a time
>>>>>>>never put much force turning that adjustment screw like almost no force required<<<
We are just removing the slack that's it!!!!!
10...Now the last part
start it and adjust you will feel the pulse of the valve springs
Again use just a 10 mm socket and your to fingers
Once you feel the pulse ing stop your there shut down the engine
11...Last step
Back off your 10 mm adjustment 1/4 turn
Lock it down
done
>>>>>>>>>Do this one Tensioner at a time !!!!!!<<<<<<<
Best I got