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thread cleaning

Discussion in 'Early CJ5 and CJ6 Tech' started by oldiejeep, May 8, 2008.

  1. May 8, 2008
    oldiejeep

    oldiejeep New Member

    Joined:
    Apr 17, 2008
    Messages:
    30
    Hello,
    I have a spiral flute tap.7/16"-14NC.Can i use it to clean the the threads on the block for the head bolts on a f-head engine?Asking before make the mistake.:?:?:?
     
    oldiejeep, May 8, 2008
    #1
  2. May 8, 2008
    1969_CJ5

    1969_CJ5 Sponsor

    North Carolina
    Joined:
    Feb 14, 2004
    Messages:
    182
    Not sure if the tap will work or not.... But I use a 40 caliper handgun barrel brush to clean threads.

    PICTURE
     
    1969_CJ5, May 8, 2008
    #2
  3. May 8, 2008
    oldiejeep

    oldiejeep New Member

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    Apr 17, 2008
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    nice,but if i will go to buy a 40 cleaner brush the police will follow me for one year here in europe R)R)R)R)R)
     
    oldiejeep, May 8, 2008
    #3
  4. May 8, 2008
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
    Messages:
    4,275
    You should be OK with that tap on head bolts, since they go down into the water jackets. You'll definitely want to use some Permatex #2 on the tips of the bolts before you thread them down into the block though, or they'll weep coolant until the cows come home.

    On a blind hole, you'll want to use a bottoming tap (no taper) so that you can get the last couple of threads at the bottom of the hole.

    Here's a good description of the various types of taps: http://en.wikipedia.org/wiki/Taps_and_dies

    (Check out the first picture down on the right side of the page)
     
    w3srl, May 8, 2008
    #4
  5. May 8, 2008
    oldiejeep

    oldiejeep New Member

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    You'll definitely want to use some Permatex #2 on the tips of the bolts before you thread them down into the block though,
    Permatex #2
    or permatex aviation????
     
    oldiejeep, May 8, 2008
    #5
  6. May 8, 2008
    oldiejeep

    oldiejeep New Member

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    i just bought one can of aviation stuff
     
    oldiejeep, May 8, 2008
    #6
  7. May 8, 2008
    oldiejeep

    oldiejeep New Member

    Joined:
    Apr 17, 2008
    Messages:
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    oldiejeep, May 8, 2008
    #7
  8. May 8, 2008
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
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    Messages:
    4,275
    That tap will do just fine, and so will Permatex Aviation Sealant. ;)
     
    w3srl, May 8, 2008
    #8
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