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Old 08-19-2007, 04:31 PM
4x4powerstroke 4x4powerstroke is offline
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1990 Ranger 4.0 V6 torque specs

What are the torque specs for heads and rocker arm for 1990 Ranger 4.0 V-6?
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Old 08-20-2007, 02:10 AM
rocker_topper rocker_topper is offline
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the head bolts are 44 lbs im not sure about the rocker arms sorry if i can find it i will post it
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Old 08-20-2007, 09:43 AM
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44 ft/lbs is the torque for the first step. After setting them to that in the correct sequence, set them to 59 ft/lbs. The third step requires that they be tightened an additional 80-85║, which is slightly less than 1/4 turn. I mark the head of each bolt so that I have a reference point.

Also, you are using new head bolts, aren't you? These bolts are torque-to-yield and can only be used once as they stretch when torqued.

Rocker shaft supports are 46-52 ft/lbs.
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Old 08-20-2007, 01:13 PM
4x4powerstroke 4x4powerstroke is offline
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Thumbs up Thank-you

thanks very much for your fast response to my ? bout torque specs
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Old 08-20-2007, 09:56 PM
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I didn't think it was all that fast, but you're certainly welcome...!

Also, my Chilton's manual talks about installing the intake manifold at the same time as the heads and torquing them alternately. I've never heard of doing that on anything else, you'd just about need two torque wrenches (if using the click type) in order to keep from having to reset the torque wrench for every bolt.
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