torque spark plugs to about 20 ft lb??

[SentinelFPS]

was watching a video and he was working on a M62tub44. replaced the plugs and he said to snug them in first and then torque to about 20 ft lb??? Is this true??

[White94RX]

23 newton meters is BMW spec on the spark plug box (and I think +/- 1). That's 16.96 ft/lb. That being said, I torque every spark plug I install to 18 lb/ft.

[shogun]

The tightening torque for a spark plug changes with the diameter of the spark plug. The following are the recommended torque values.
Plug thread diameter.......Tightening torque
18 mm......................... 35 to 40N·m (3.5 to 4.0 kgm)
14 mm......................... 25 to 30N·m (2.5 to 3.0 kgm)
12 mm......................... 15 to 20N·m (1.5 to 2.0 kgm)
10 mm......................... 10 to 12N·m (1.0 to 1.2 kgm)
8 mm............................ 8 to 10N·m (0.8 to 1.0 kgm)

http://www.ngk-sparkplugs.jp/english...q18/index.html