Header flange torque specifications

Discussion in 'Engine, Fuel and Exhaust' started by Whateverr, Dec 30, 2012.

  1. Whateverr

    Whateverr Member

    8
    0
    0
    Installing new Vance and Hines true duals. Shop manual calls for 120 in lb. It feels as if though I'm almost ready to ring the bolt. I have a snapon electic torque wrnech when I set it to 10 ft lbs it went off right away. Is that what most shop manuals call for 120 in lbs or 10 ft lbs? Or is my snapon gving up the fight? Thanks
     
  2. Breeze3at

    Breeze3at Well-Known Member

    4,643
    83
    124
    10 ft. lbs. is 120 inch lbs. That is the correct value for the flange nuts.
    Assemble the whole system before tightening anything. Then tighten the whole system gradually, it helps alignment.
     
  3. Rubyred

    Rubyred Senior Member

    1,020
    48
    11
    I wouldn't use a ft/lb torque wrench. Most wrenches aren't accurate in the first 10% of the range. An in/lb. wrench would be a lot more accurate, IMO.
    [​IMG]