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5.4L 2V Intake Manifold (2001)

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5.4L 2V Intake Manifold (2001)

  #16  
Old 01-11-2019, 09:47 AM
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ok, need immediate help with the torque values

I am putting the upper and lower together, I am finding I need to do a 2 step process, first step is 18 inch/pounds and second step is?

the oem uses flanged bolts
 
  #17  
Old 01-11-2019, 11:25 AM
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What does the shop manual say?
 
  #18  
Old 01-11-2019, 12:58 PM
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The problem is I can't find it. It is says to see figure 3 or 4 and there's nothing there. Has a picture. Does not uave the value

It's like nobody on this website has ever done any of this stuff
 
  #19  
Old 01-11-2019, 02:21 PM
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I can't help you with the values, but I would think the torque specs would be different for aluminum and plastic manifolds. Use the 1999 specs?
 
  #20  
Old 01-11-2019, 03:10 PM
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The 1st step of values I am seeing as 18" pounds and then I don't know what for the 2nd step the specs that I'm seeing are for 2004 and prior is all the same spec

For after 2004 the spec goes from 18" pounds for the 1st step to 89" pounds for the 2nd step
 
  #21  
Old 01-11-2019, 03:11 PM
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I do have a Haynes manual that shows the values for the 2004 prior and and actually says 18" pounds for the 1st step but for the 2nd step it just says 15 to 22 and I'm not sure if that's inch pounds or foot pounds or what period
 
  #22  
Old 01-11-2019, 05:34 PM
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  #23  
Old 01-11-2019, 06:13 PM
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I have the sequence for both, just not the torque spec. For the upper to lower, that spec ypu posted seems way off. 8.3 ft/lbs is almost 100 inch/pounds.

which is more than the 2004+ spec for sure

maybe I am overthinking it and 8.3 ft/lbs is ok.

 
  #24  
Old 01-11-2019, 08:17 PM
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Intake Manifold To Cylinder Head - 2 Steps: 1.5FtLbs; 18FtLbs
Intake Manifold Plenum To Intake Manifold - 2 Steps: 1.5FtLbs; 8.3FtLbs
 
  #25  
Old 01-11-2019, 08:37 PM
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Originally Posted by glc View Post
Intake Manifold To Cylinder Head - 2 Steps: 1.5FtLbs; 18FtLbs
Intake Manifold Plenum To Intake Manifold - 2 Steps: 1.5FtLbs; 8.3FtLbs
yeah, that is close to what I found, but that is the spec that I saw listed for the 2004+

the second step is supposed to be 89 inch/pounds (on the 2004+)..... which is less than 8.3 ft/lbs.....

well, I have a few days, just ordered my custom bolts from fastenal. will pick them up in a few days... they are m6x1 x40 mm hex flanged bolts in 10.9 zinc
 
  #26  
Old 01-11-2019, 09:55 PM
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I believe I do not need the insulator plastic box thing, as it appears that was there to protect the lower stock plastic manifold from getting heated.... but my lower is now Dorman aluminum
 
  #27  
Old 01-11-2019, 10:36 PM
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You can safely torque aluminum tighter than plastic.
 


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