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It does not include the torque's however. Although I find references to the applicable torques being between 71 and 106 in lbs.I hesitate to suggest such as inappropriate torque can crack the manifold. If you become a free member of Autozone, you can download their variation of a service manual for the 2003 Taurus. The user manuals do not include torques. An alternative is to sign into https://cardiagn.com/ford/taurus/. You can find a generalized torque chart at https://www.taurusclub.com/forum/82-maintenance-repair/349683-trying-find-official-torque-specs.html but determining the steel quality of your bolts strikes me as an esoteric bit of knowledge. Here is a YouTube regarding removal of the manifold: https://www.youtube.com/watch?v=s8o6UWs17bU
Hopefully, one of these service manuals will have the information you seek.
Engine code vin 1, 3.0L ,My info says 89 in lbs, upper and lower, notice that said inch lbs not ft lbs.
The picture should be for lower intake manifold. Sorry, my free-hand drawing isn't very good. Make sure correct vin? Hope you can read it.
www.fordforumsonline.com > Ford Tech Forums > Engine & Drivetrain
May 7, 2010 - 2 posts - 2 authors
ISO torque specs for the intake & plenum for a 98 Windstar...3.8 with the ... Our community is here to help you with any questions you have related to your Ford. ... Lower Intake Manifold to Cylinder Head Bolt 8-12 - (71-106).
When torqueing bolts on manifolds or heads you always start in the middle or center and torque in a circle motion and olny torque 1 bolt at a time. Start with a low toque and increase torque up 5 to 10ft lbs / or newtons each time until torque spec is reached.
Lower intake bolts 11 ft. lbs start in the center of the intake and work your way out cross from side to side.Tighten the upper intake bolts with the same procedure with 89 inch pds.Be sure to apply threadlocker to the lower intake bolt threads.
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