I took this photo when I found the loose rocker Arm under the rocker cover...
Then I took the spark plugs out to look at them and took this photo.
your rockers look like the std stamped steel ones from the pic. if you use those you would probably need .100 over hardened pushrods OR you could go to roller rockers and the pushrods you have will be fine.
I will do the pen test with both.
When I loosen the rocker arm to remove the old pushrod and drop the new hardened one in its place,
do I simply tighten the rocker arm up again on top of it, or is there something you need to do to set it up?
Thank you, I have a question though, don't I have to tell the difference between the intake stroke and the power stroke and do it during one or other of them, and do I need to measure the torque of the nut when I tighten it?
(been watching how to youtube videos again and left puzzled I'm afraid...)
I would renew the "Simmons" nuts that hold the rockers down if they were not replaced., that could be why the rocker has come loose.
Im glad MOPAR doesn't have that crap set up for valve adjustment and stability, give me a real rocker shaft set up anyday.
just as the exhaust valve starts to open adjust the inlet rocker on that cylinder. just as the inlet valve closes adjust the exhaust rocker. that will work on any 4 stroke engine. neil.