Assembly lube under head bolt washers?
Thread Starter
Senior Member since 1492
Joined: Aug 2000
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From: Just because I'm paranoid doesn't mean people aren't out to get me...
St. Jude Donor '09
Assembly lube under head bolt washers?
I remember reading that somewhere to keep the head bolt washer from digging into the aluminum head when you're torquing them?
:confused:
:confused:
Le Mans Master
Joined: Feb 1999
Posts: 5,877
Likes: 1
From: Park Ridge IL
Re: Assembly lube under head bolt washers? (1970 Stingray)
You should always put assembly lube under the washers and between the washer and nut, as well as the stud/bolt threads, for best results. It will result in a more accurate torque reading.
Safety Car
Joined: Aug 2000
Posts: 3,909
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From: Clymer PA
Re: Assembly lube under head bolt washers? (Monty)
Monty took the words right out of my mouth. You put assembly lube under the washers for the same reason that you chase all of your bolt holes and make sure all of the threads on the bolts are clean. When you use a torque wrench it measures the amount of resistance. So by putting assembly lube under the head bolt washers it will, as Monty already pointed out, give you a more accurate torque reading.
Instructor
Joined: Sep 2001
Posts: 171
Likes: 0
Re: Assembly lube under head bolt washers? (bence13_33)
You put assembly lube under the washers for the same reason that you chase all of your bolt holes and make sure all of the threads on the bolts are clean. When you use a torque wrench it measures the amount of resistance. So by putting assembly lube under the head bolt washers it will, as Monty already pointed out, give you a more accurate torque reading.
When you use a torque wrench it measures the amount of resistance.
Unfortunately, yes. However, what determines the clamping ability of a bolt/stud is tensile strength/stretch. Torque is a poor method of measuring stretch of the fastener. Any deviation from the recommended lube procedure will alter the fastener stretch with a given torque value. I'd use the service manual or stud mfr. recommendations. No need or merit in getting to exotic.
[Modified by arnold, 7:00 PM 6/13/2003]
Drifting
Joined: Dec 2002
Posts: 1,861
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From: Houston TX
Re: Assembly lube under head bolt washers? (arnold)
Unfortunately, yes. However, what determines the clamping ability of a bolt/stud is tensile strength/stretch. Torque is a poor method of measuring stretch of the fastener. Any deviation from the recommended lube procedure will alter the fastener stretch with a given torque value. I'd use the service manual or stud mfr. recommendations. No need or merit in getting to exotic.
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Re: Assembly lube under head bolt washers? (arnold)
I got them from GoodWay, they specialize in cleaning systems for tubes (usually they are for cleaning heat exchangers, pipes for overs and so on..)
I use the stainless ones:
http://www.goodway.com/datacart/acce...roductTypeID=3
[Modified by Twin_Turbo, 5:06 PM 6/16/2003]
I use the stainless ones:
http://www.goodway.com/datacart/acce...roductTypeID=3
[Modified by Twin_Turbo, 5:06 PM 6/16/2003]
