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Author
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Topic: Better head bolts Cheap!! ?SNAKE OIL??
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69maverick
Gearhead Posts: 897
From: Thomaston,CT.
Registered: Jan 2001
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posted 11-29-2002 12:08 AM
   
I work at a Concrete Co. We have a Repair garage on site! The other day a Salesman from the LAWSON bolt Co. Came in and we started talking! He noticed the PiC.Of My Mav.On the wall and asked about it! Anyway to the point of this post he told me he could supply me with better quality head bolts than ARP for about 16 dollars! He also said that they sell bolts called "TRUE TORQUE" There brand that are lubracated somehow that gives a truer torque reading! He talked about "friction torque" and alot of other technical terms! But the one thing he said that made me wonder about is "WET Torque" meaning lubed or greased bolts. He says they should be torqued different from a dry bolt?
Some of this does make sence to me!! ANY COMMENTS???????
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jsracingbbf
Gearhead Posts: 1677
From: Batesville,MS. , U.S.A.
Registered: Mar 2002
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posted 11-29-2002 12:25 AM
I don't know about LAWSON making better bolts than ARP. We use LAWSON's small bolts at work and they seem to be OK. I use ARP bolts mostly in my car, BUT I do use a few LAWSON 8 grade bolts for bellhousing, water pump etc.
Your sales guy was correct in telling you there is a difference in the torque of a lubricated and non lubricated bolt. Our rule at work is either install them all dry or all lubricated, but never mixed. We have charts that convert Hydraulic pressure to ft lbs. (Most of the bolts are so big we use a hydraulic torque wrench.) Actually, I am wrong the mechanics are the ones that do this, but everyone knows the drill. The charts have two columns, one for lubricated bolts and one for dry. Our OEM manual says the preference is lubricated bolts. I guess for reduced friction. Makes sense to me, then again I ain't no engineer I just go by what they recommend.  ------------------
Jerry Smith
69 Mustang Pro ET Drag
70 Mustang retired former footbrake car
"Long ago when men cursed and beat the ground with sticks, it was
called witchcraft.....Today, it's called golf."
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cracing
Journeyman Posts: 55
From: Saltillo Miss. USA
Registered: Jan 2002
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posted 11-29-2002 03:38 AM
Someone correct me if Im wrong,but the torque values I have seen all give two figures, one low, one high. This doesnt mean that anywhere in between is OK say like head bolt torque is 140#-150#, the lower figure is for lubed threads and the larger figure is for clean dry threads. ------------------
BAD COMPANY TILL THE DAY I DIE!!!!!
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cracing
Journeyman Posts: 55
From: Saltillo Miss. USA
Registered: Jan 2002
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posted 11-29-2002 03:44 AM
Almost forgot, there are different values for different lubes also,Moly lube uses less torque than oiled threads.Usually aftermarket performance pieces provide the ratings for different lubes.------------------
BAD COMPANY TILL THE DAY I DIE!!!!!
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Ryan Wilke
Gearhead Posts: 1501
From: Stanton, Michigan 49707
Registered: Oct 2000
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posted 12-04-2002 05:29 PM
Hey Guys, Check out ALL the small print provided in this ARP tech site: http://www.arp-bolts.com/pages/tech/images/fasttorq.pdf The tech article provides reasoning for "fastener lubrication" and that most bolts requiring an accurate torque need to be tightened and loosened at least THREE times.... I'd recommend reading it very carefully and maybe more than once..... Ryan 
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