Finding TDC?

Discussion in '94-95 5.0 - Specific' started by G_94_T, Oct 5, 2015.

  1. G_94_T

    G_94_T Member

    Messages:
    217
    Likes Received:
    5
    Joined:
    Oct 1, 2006
    Location:
    TN
    Using the piston stop method...(cw mark,ccw mark)...the difference between the two readings ,im coming up with 10*btdc....shouldnt i be getting 0* for tdc


    This is on a 94 5.0 mustang and the balancer is new aftermarket
     
  2. 96blak54

    96blak54 Legend

    Messages:
    7,451
    Likes Received:
    767
    Joined:
    Feb 21, 2011
    Location:
    Ky
    Im not fond of the positive stop method, but you rotate to stop, record #, rotate opposite direction to stop, record number, then remove stop and rotate again and add half of what the diffrence was recorded
     
  3. G_94_T

    G_94_T Member

    Messages:
    217
    Likes Received:
    5
    Joined:
    Oct 1, 2006
    Location:
    TN
    Thats what im om doing except the the third rotation.....?
     
  4. G_94_T

    G_94_T Member

    Messages:
    217
    Likes Received:
    5
    Joined:
    Oct 1, 2006
    Location:
    TN
    The first time i got cw 20*btdc.....ccw 13*atdc....the middle of this is 9*btdc....not 0
     
  5. 96blak54

    96blak54 Legend

    Messages:
    7,451
    Likes Received:
    767
    Joined:
    Feb 21, 2011
    Location:
    Ky
    Gotta do the math before moving on the third rotation
     
  6. kb1982

    kb1982 Active Member

    Messages:
    591
    Likes Received:
    4
    Joined:
    Aug 10, 2013
    Location:
    Kentucky
  7. G_94_T

    G_94_T Member

    Messages:
    217
    Likes Received:
    5
    Joined:
    Oct 1, 2006
    Location:
    TN
    Excuse my ignorance but what is the math?
     
  8. kb1982

    kb1982 Active Member

    Messages:
    591
    Likes Received:
    4
    Joined:
    Aug 10, 2013
    Location:
    Kentucky
    My math keeps coming up around 3 to 4 degrees BTDC. 13+20 = 33 33/2=16 degrees. Take 16 from 13 and you get 3 degrees BTDC. Take 16 degrees away from 20 and that will leave you with 4 degrees BTDC. So in between 3 and 4 should be true TDC if your numbers were right. Could measure it with a tape measure (thank a tailor tape) from your measurements, then just divide that by half. Another easy way, lay down a piece of paper on the HB, make a mark with a sharpie on the paper corresponding with your 2 readings. Now just simply fold the paper until the 2 sharpie marks on the paper are alligned evenly. The crease fold will be exactly halfway between the 2 marks. It isnt real uncommon for the TDC mark to be off by a few degrees.
     
  9. G_94_T

    G_94_T Member

    Messages:
    217
    Likes Received:
    5
    Joined:
    Oct 1, 2006
    Location:
    TN
    thanks for the enlightenment kb
     
  10. evilcw311

    evilcw311 Most Evil Mod! Staff Member Staff

    Messages:
    7,145
    Likes Received:
    1,757
    Joined:
    May 9, 2010
    Location:
    Louisville, KY
    Your all completely wrong. Just thought I'd let y'all know the correct way..........
    [​IMG]


    This message courtesy of crapatalk!
     
  11. 96blak54

    96blak54 Legend

    Messages:
    7,451
    Likes Received:
    767
    Joined:
    Feb 21, 2011
    Location:
    Ky
    Now we're talking!!!

    But his heads are bolted down.....he could use long cigarettes through the sparkplug holes?
     
  12. evilcw311

    evilcw311 Most Evil Mod! Staff Member Staff

    Messages:
    7,145
    Likes Received:
    1,757
    Joined:
    May 9, 2010
    Location:
    Louisville, KY
    Nobody wants a motor that smokes........


    This message courtesy of crapatalk!
     
  13. 96blak54

    96blak54 Legend

    Messages:
    7,451
    Likes Received:
    767
    Joined:
    Feb 21, 2011
    Location:
    Ky
    True.....something slim and long to fit down the holes...hmmm.

    I got it! Use tampons!
     
  14. evilcw311

    evilcw311 Most Evil Mod! Staff Member Staff

    Messages:
    7,145
    Likes Received:
    1,757
    Joined:
    May 9, 2010
    Location:
    Louisville, KY
    [​IMG]


    This message courtesy of crapatalk!