TORQUE SPECS???
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Road Warrior
Joined: Feb 2008
Posts: 1,390
Likes: 127
From: SW OREGON
TORQUE SPECS???
All the torque specs in the service manual show 2 figures:
Spark Plug torque 12-18 ft-lbs
Well what the hell is it, 12 or 18 ft-lbs.. or something in between??
All my other service manuals for my other vehicles have just 1 number:
Spark Plug torque 13 ft-lbs (PT Cruiser) sothe harley tableshave me confused. What do you guys who use a torque wrench do?
Spark Plug torque 12-18 ft-lbs
Well what the hell is it, 12 or 18 ft-lbs.. or something in between??
All my other service manuals for my other vehicles have just 1 number:
Spark Plug torque 13 ft-lbs (PT Cruiser) sothe harley tableshave me confused. What do you guys who use a torque wrench do?
Tourer
Joined: Nov 2007
Posts: 452
Likes: 2
From:
RE: TORQUE SPECS???
AS PREVIOUSLY POSTED: Wrap up that pretty torque wrench and PUT IT AWAY. Save it for critical internal engine torques. The new MOCO torques specs are:
Snug: like the seat mount screw
Tight: like cover bolts, drain plugs and spark plugs
MF Tight: like rear axle nuts
Snug: like the seat mount screw
Tight: like cover bolts, drain plugs and spark plugs
MF Tight: like rear axle nuts
Extreme HDF Member
Joined: Apr 2006
Posts: 10,449
Likes: 46
From: Roswell, GA
RE: TORQUE SPECS???
My degreed mechanical engineering friend and biker/motorhead tells me that the lower value is the minimum necessary to prevent the fastener from loosening, and the maximum value is the upper limit before more applied force may cause damage. Solution--choose the midpoint between the minimum and maximum and torque to that value. Given the +/- inaccuracy of most torque wrenches, especially those that haven't been recently calibrated,the midpoint makes good practical sense as well.
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Road Warrior
Joined: Feb 2008
Posts: 1,390
Likes: 127
From: SW OREGON
RE: TORQUE SPECS???
ORIGINAL: Lost1
It's common to indicate a range for fastener torque. Go to the mid-point between high & low and you'll be fine.
It's common to indicate a range for fastener torque. Go to the mid-point between high & low and you'll be fine.
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Road Warrior
Joined: Feb 2007
Posts: 1,785
Likes: 4
From: Oklahoma
RE: TORQUE SPECS???
ORIGINAL: lecomte38
AS PREVIOUSLY POSTED: Wrap up that pretty torque wrench and PUT IT AWAY. Save it for critical internal engine torques. The new MOCO torques specs are:
Snug: like the seat mount screw
Tight: like cover bolts, drain plugs and spark plugs
MF Tight: like rear axle nuts
AS PREVIOUSLY POSTED: Wrap up that pretty torque wrench and PUT IT AWAY. Save it for critical internal engine torques. The new MOCO torques specs are:
Snug: like the seat mount screw
Tight: like cover bolts, drain plugs and spark plugs
MF Tight: like rear axle nuts
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Outstanding HDF Member
Joined: Mar 2007
Posts: 2,032
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From: Alabama
RE: TORQUE SPECS???
ORIGINAL: 66cruiser
Then why in hell don't they give the spec as the mid-point instead of a range? I'm no mechanic but I have service manuals on most vehicles I've owned & never seen torque specs given as a range. Might be useful for an engineer but makes no sense to a backyard mechanic.
ORIGINAL: Lost1
It's common to indicate a range for fastener torque. Go to the mid-point between high & low and you'll be fine.
It's common to indicate a range for fastener torque. Go to the mid-point between high & low and you'll be fine.
If it bothers you that damn much throw the friggin manual out the window and be done with it!
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Road Warrior
Joined: Feb 2008
Posts: 1,390
Likes: 127
From: SW OREGON
RE: TORQUE SPECS???
ORIGINAL: Lost1
So why get pissy with me? I was just trying to answer your question.
If it bothers you that damn much throw the friggin manual out the window and be done with it!
ORIGINAL: 66cruiser
Then why in hell don't they give the spec as the mid-point instead of a range? I'm no mechanic but I have service manuals on most vehicles I've owned & never seen torque specs given as a range. Might be useful for an engineer but makes no sense to a backyard mechanic.
ORIGINAL: Lost1
It's common to indicate a range for fastener torque. Go to the mid-point between high & low and you'll be fine.
It's common to indicate a range for fastener torque. Go to the mid-point between high & low and you'll be fine.
If it bothers you that damn much throw the friggin manual out the window and be done with it!
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