a tip for spark plug socket and torq
all 3/8" engagements:
1) for ease of service, you need a 5/8" long spark plug socket
, these are ~5" long, have a hex & knurled end, have a spark plug socket end (with retaining rubber)
, and has a radial hole to engage the ball of extension.
2) two 2.5" extensions. i have many, but for plugs i use one that has a strong spring in the ball, this helps keep it attached to the socket, and then the 2nd one is a tad worn out so it helps me attach and remove as needed.
3) a ratchet that has tilting head.
4) the combo of #1-3 works very well for me, never once an issue of losing socket in the bore.
using std short or deep dish sockets is simply just trouble waiting to happen.
as for torq spec, just note that the oem spec is for oem plugs. once you switch plugs the crush washer on plug may be different therefore the torq needed may be different, it wont be wildly different, but i have seen where i switched and used oem torq spec, then went back w/o torq wrench and found the plug still needed to go a tad more. the NGK's i have (doing plugs today) have a tighten-to-position diagram on them. i have done many plugs before so i can feel when the crush washer is done, thus i dont use torq wrench for plugs. comparing my own feel for when plug is done about matches that of the diagram on plug box.