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Old 01-18-2004, 08:24 PM
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Question 2.9 head bolt torque ?

I have a quick question about the torque sequence on a 2.9. In the book I am using it says to torque in 4 steps. 1st step 22 ft lbs. 2nd step 51-55 ft. lbs. 3rd step wait five minutes. 4th step turn 90 degrees. It is the fourth step that I am confused about because to me it is not very specific. Maybe if I didn't think so hard I would just tighten them up another 90 degrees but I want to make sure that in fact I am suppose to tighten them. Any body have any input on this. Thanks.
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Old 01-19-2004, 12:33 AM
jandjstewart jandjstewart is offline
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the say 90 degrees because a strech bolt is used and an acurate torque wont be achieve on them but it will end up right around 100 ft lbs
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Old 01-19-2004, 09:28 PM
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It also says that new head bolts are required but I had already purchased new head bolts just in case.
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Old 01-20-2004, 05:42 PM
snwcmpr snwcmpr is offline
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I just did that on my truck, and it was recommended by my mechanic that I use a half inch drive socket instead of a 3/8" drive socket due to the amount of torque that will result. He said the smaller socket most likely will break.
Ken
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Old 01-20-2004, 09:11 PM
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The head bolts are Torx. Do the same rules apply?
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Old 01-23-2004, 04:44 PM
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I don't know, but I do know the torque will exceed 100 ft lbs.
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Old 01-24-2004, 12:17 AM
capridude capridude is offline
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I had never used "torque-to-yield" head bolts
before...... torquing that last 90 degrees was
WEIRD because the bolts feel like they are going
to snap off!
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Old 01-24-2004, 12:17 AM
 
 
 
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