M156 Spark Plug Torque spec.

[Crustyclam]

Hi,

Can anyone confirm the torque for m156 spark plugs please.

Seen a vid that's says 18 ft/lb or 20nm. However converting 18ft/lb's is not 20nm.

Using NGK

Cheers

Lee

 

[Crustyclam]

Hi,

Can anyone confirm the torque for m156 spark plugs please.

Seen a vid that's says 18 ft/lb or 20nm. However converting 18ft/lb's is not 20nm.

Using NGK

Cheers

Lee

If it helps anyone in the future someone provided me with the info.

M12 thread 15-20N m (recommended tightening angle About 1/3 turn)

 

[Tuercas viejas]

Answer with an ex Royal Navy WW2 Bosun's voice from the memory banks as an apprentice .
Laad !
Tight is tight and too tight is overtight!
So with that in mind and the threads are good /not marred up and not fouled up with dirt/debris then its this read on :-

Spark Plug Installation - NGK Spark Plugs

Torque is one of the most critical factors in spark plug installation. Learn more on our resource page.

ngksparkplugs.com

And with his Cornish accent "thems be new'uns".
If re using them, install to snug, then a1/12 of a turn or one flat.
Don't go mad.
Tuercas viejas