aklim

Think engine studs. A light coat of oil to install. Helps the torque get consistent.

Pilgrim86314

Manufacturers specify wet (oiled) or dry torque values. It makes a difference. Do what they say or you will not get a valid torque on the threads.

OTOH, if you're using an educated wrist instead of a tq wrench you don't have to get hung up on numbers. 25 years of wrenching my own Harleys has taught me what "tight enough" feels like. Early on, I found out that "too tight" winds up feeling like "too loose."

Joe C

not sure anyone mentioned this, but - MAKE SURE YOU ARE USING AN ACTUAL SPARK PLUG SOCKET, AND NOT A GENERIC (5/8") DEEP SOCKET for removal - especially any kind of generic 12 point socket (not to be confused with a specialty 12 point SP socket). the common feature on the SP socket is the rubber insert. no only does it hold the socket in place during installation, but it aids in the socket-plug alignment for removal. getting an impact wrench in there is an impossibility, so apply an ever increasing, steady torque for removal. make sure you are in near perfect alignment and avoid and sharp blows to the ratchet or wrench. a torque amplifier may be necessary if clearance allows. good luck and

asimkhan6296

Best way to free stuck spark plug is use of penetrating. See some best penetrating oil here

Vets-Vet

I know this thread is very old but, and just asking the forum folks, can the exhaust bolt technique be used here ? Get it to move a tiny little bit then reverse the ratchet and back in a tiny little bit, spray the crap out of it then out a little then in, out in out in etc ? a 20 or 30 minute technique but it works.