Head Bolts
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Member
Joined: Jan 2004
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From: Louisville,KY
Head Bolts
I got a 97 F150 4.6W I can not find out what the torgue should be on the head bolts. The book I have just says tighten and then turn an extra quarter turn. Anyone know the exact torgue that it should be?
Technical Article Contributor
Joined: May 2004
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From: Georgia on my mind...
Start at 30 ft/lbs, then go 90 degrees, then an additional 90 degrees. Do this in steps of three, i.e., torque 'em all to 30 ft/lbs, pull 'em all another 90 degrees, then all of them again another 90 degrees.
Senior Member
Joined: Jan 2005
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From: ....I could be anywhere....
Originally Posted by Quintin
Start at 30 ft/lbs, then go 90 degrees, then an additional 90 degrees. Do this in steps of three, i.e., torque 'em all to 30 ft/lbs, pull 'em all another 90 degrees, then all of them again another 90 degrees.
wow
you start at 30 ft.lbs
whatever happend to the days where 80-120 ft.lbs was the norm
technology
...zap!
Banned for Use of Multiple Usernames
Joined: Jul 2004
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From: Somewhere between San Diego and Phoenix
Keep in mind that the stock bolts cannot be reused. Torque-to-yield bolts are good for one install, then they are done. I'm with Quintin on changing to ARP stuff if my heads ever need to come off.