Spark Plug Torque
#1
#2
#3
Have to agree with that, I'm pretty sure back in the old days, before we could afford torque wrenches the rule was "half a turn less than before it snaps".
#4
To carry on from TK's method you can always keep going til you feel it thread start to go soft then back it off slightly and cross your fingers.
Personally I have never touqued spark plugs I just use a 3/8" drive mini rachet and just tighten to wrist tight but then I have been mechanicing for 40+ years so I guess I have developed a bit of a feel for how tight things should be.
Having said that a lot of things like diesel engine head bolts are now torqued to say 24ftlb and then a further 90deg followed by another 90deg. It doesnt sound much but I can assure you that it is almost to the stage of needing to use a 900mm wrench bar to achieve it.
Personally I have never touqued spark plugs I just use a 3/8" drive mini rachet and just tighten to wrist tight but then I have been mechanicing for 40+ years so I guess I have developed a bit of a feel for how tight things should be.
Having said that a lot of things like diesel engine head bolts are now torqued to say 24ftlb and then a further 90deg followed by another 90deg. It doesnt sound much but I can assure you that it is almost to the stage of needing to use a 900mm wrench bar to achieve it.
#5
To carry on from TK's method you can always keep going til you feel it thread start to go soft then back it off slightly and cross your fingers.
Personally I have never touqued spark plugs I just use a 3/8" drive mini rachet and just tighten to wrist tight but then I have been mechanicing for 40+ years so I guess I have developed a bit of a feel for how tight things should be.
Having said that a lot of things like diesel engine head bolts are now torqued to say 24ftlb and then a further 90deg followed by another 90deg. It doesnt sound much but I can assure you that it is almost to the stage of needing to use a 900mm wrench bar to achieve it.
Personally I have never touqued spark plugs I just use a 3/8" drive mini rachet and just tighten to wrist tight but then I have been mechanicing for 40+ years so I guess I have developed a bit of a feel for how tight things should be.
Having said that a lot of things like diesel engine head bolts are now torqued to say 24ftlb and then a further 90deg followed by another 90deg. It doesnt sound much but I can assure you that it is almost to the stage of needing to use a 900mm wrench bar to achieve it.
Ditto JK, you literally can't strip the thread using that method. Though I bet some muscle man now proves me wrong.
I'll rephrase. With my candy a$$ed Entomologists wrists I can't strip the sparkplug hole thread using that method.
Cheers, SB
Cheers, SB
#7
#8
#9
I'll check them OK after a few hundred miles
#10