BAE head torquing tricks

Discussion in 'PSI Superchargers Tech Questions' started by sammy, Jan 16, 2007.

  1. sammy

    sammy New Member

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    Any advise welcome to how torque bae 5 heads ,9/16 studs BAE block .
    torque values , how many steps , center before ends ? inner nuts ? etc.... , coating on gasket ? retorquing hot ?
    Thanks
    Sammy
     
    #1
    sammy, Jan 16, 2007
  2. T.Howell

    T.Howell Member

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    Sammy,I bet you are going to get 10 different answers on this.
    What I do:
    torque all to 70lbs outside in top row first. (except inner studs)
    Then do...
    Top row: 95 outside in.
    Top row: 115 outside in
    Top row: 140 outside in
    Now do..
    bottom row: 95 outside in
    bottom row: 120 outside in
    Now do...
    inner studs 50.

    I retorque after the car has been run and has cooled down. Sometime after one run most times after 2 Friday runs I do it Saturday morning. Once in a while get a little something on the outside bottoms.

    Next!
     
    #2
    T.Howell, Jan 16, 2007
  3. sammy

    sammy New Member

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    top row 5 studs = sequence = 1, 5, 2, 4, 3 ?
    bottom row 8 studs = 1, 8 , 2, 7, 3 , 6, 4, 5, ?
    i always torqued heads beginning from center , this is the opposite for this engine !
    is it with " Peanut butter " ?
    some sealer on gasket ?
     
    #3
    sammy, Jan 16, 2007
  4. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    method 2

    like tom said, you're going to get mulitple answers...

    we start inside-out. with 9/16 studs, you'll probably take them all to 130-140 with standard material. if you have the grey h-11 studs you'll want to take them to 160. use either peanut butter or moly-graphite lube.

    i start inside out working in a circle. start at 70, 90, 110, 130. inners at 45 with a crows foot. then go do the other head. double check the first head after you torque the second. sometimes you'll get a little more on it. wait a few minutes and double check the second head.
     
    #4
    Will Hanna, Jan 16, 2007
  5. sammy

    sammy New Member

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    Only the top 5 studs are 9/16
    the 8 bottom studs are 1/2
    is it the same torque values for all ?

    Thanks
    Sammy
     
    #5
    sammy, Jan 16, 2007
  6. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    1/2 less

    if the bottom row is 1/2" then torque to 110
     
    #6
    Will Hanna, Jan 16, 2007
  7. T.Howell

    T.Howell Member

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    The number that I posted were how I do heads with 9/16 tops and 1/2 bottoms and has worked fine in both cast and forged blocks.

    The outside-in is a BAE recomendation. When heads torch it is usually out the ends or out the top.

    There is a million ways to skin a cat. Just make sure you skin the cat.

    With the short stud BAE block you can raise the torque values even higher.
     
    #7
    T.Howell, Jan 18, 2007
  8. sammy

    sammy New Member

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    Thanks guy's for the replays
    Sammy
     
    #8
    sammy, Jan 18, 2007
  9. shawn davis

    shawn davis Member

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    Where Do You Buy That Peanut Butter?
     
    #9
    shawn davis, Jan 18, 2007
  10. H BROWN

    H BROWN blown alky

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    Shawn, got mine from wizards warehouse.
     
    #10
    H BROWN, Jan 18, 2007
  11. Beal TAD519

    Beal TAD519 Member

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    You can buy it any truck shop like Peterbilt or Kenworth etc. It's called International Compound #2 and it has an actual Detroit Diesel part number.
     
    #11
    Beal TAD519, Jan 18, 2007
  12. staflund

    staflund New Member

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    Detroit Diesel part number ??

    And what is the Detroit Diesel part number ?. hard time finding it here in Sweden.
     
    #12
    staflund, Jan 18, 2007
  13. Henry Charest

    Henry Charest New Member

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    Peanut Butter is: Detroit Diesel International Compound #2. GM part is: 1#5198563. Its' fairly costly, about 38.00 per can, but it WORKS and one can ought to last a lifetime.
    Henry
     
    #13
    Henry Charest, Jan 18, 2007
  14. ITS IN MY BLOOD

    ITS IN MY BLOOD TAFC

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    Hey
    Just remember to torque your heads the same way every time.
    atleast untill you change the headgaskets then you can try
    a different torque, or sequence.
     
    #14
    ITS IN MY BLOOD, Jan 18, 2007
  15. secondwindracing

    secondwindracing top alcohol

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    Henry is right it will last for ever.... 4 years and still at the top..but bring the jelly and it might be gone:eek:
     
    #15
    secondwindracing, Jan 18, 2007

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