250 Inch-Pounds = 20.833333 Foot-Pounds
You could have 'newton-centimeters', or 'newton-inches', or 'pound meters' etc., but you can't have 'newton pounds'. Torque is (a distance) x (a force), but 'newton pound' is (force) x (force). Whether or not that has any physical significance at all, it's surely not torque.
1 foot = 12 inches1 foot-pound = 12 inch-pounds
140/12 = 11.66... foot pounds
14.7 pounds per square inch of head surface.
Atmosphere pressure can be measured in pounds per square inch, and this varies depending on how far a location is above or below sea level. At sea level, atmospheric pressure equals 14.7 pounds per square inch (or psi).
90 inch - pounds (torque) = 90 / 12 = 7.5 foot pounds (torque)
10 inch-pounds is approximately 1.13nM
1 inch pound force = 0.0833333333 foot pounds
18 ft lbs then with torque angle meter on wrench turn 90 degrees 3 times. Use new head bolts they are torque to yield
You could have 'newton-centimeters', or 'newton-inches', or 'pound meters' etc., but you can't have 'newton pounds'. Torque is (a distance) x (a force), but 'newton pound' is (force) x (force). Whether or not that has any physical significance at all, it's surely not torque.
Tighten the drain plug using a two-finger rule till it feels snug(drain plug requires less torque [15 - 25 ft. lbs] than many torque wrenches can be set to, many begin at 25-30ftlbs)so best to NOT use a torque wrenchhowever, if you have a smaller torque wrench , I found this information elsewhere"For the 4.0L six-cylinder, torque the drain plug to 18 foot-pounds of torque. For the 4.6L eight-cylinder, use 19 foot-pounds of torque."
You need six pounds of pressure to torque.
37 lbs. converted to inch pounds equals 444 inch pounds.
255 inch pounds = 21.25 foot pounds.
Turns on a ratchet do not equate to foot pounds. The ratchet could be turning against very little force or a lot of force. Foot pounds is calculated in automotive mechanics by using a torque wrench.
1 foot = 12 inches1 foot-pound = 12 inch-pounds
You use a torque wrench for tightening bolts to an exact pressure. This is particularly important in things where many bolts must all be the same tightness, such as cylinder heads in engines, and parts of transmissions.