Register now to get rid of these ads!

Technical Info on Flathead Head Acorn Nut Covers?

Discussion in 'Traditional Hot Rods' started by painterdaveee, Mar 5, 2014.

  1. painterdaveee
    Joined: Dec 10, 2009
    Posts: 43

    painterdaveee
    Member

    Wondering how to secure the chrome acorn nut cover to 11/16" head bolt.I got a set,and they are not tight.Running a 51 Flathead,and used the original head bolts on vintage Edelbrock heads.Thanks for any info.on this.Dave
     
  2. plym49
    Joined: Aug 9, 2008
    Posts: 2,797

    plym49
    Member
    from Earth

    Dab of silicone.
     
    Blue Coupe likes this.
  3. try a piece of tin foil, over the head, then trim after installing the cover.
     
  4. J'st Wandering
    Joined: Jan 28, 2004
    Posts: 1,766

    J'st Wandering
    Member

    I used silicone.
     

  5. neb-rivet
    Joined: Mar 25, 2012
    Posts: 69

    neb-rivet
    Member
    from Nebraska

    I used a cold chisel on one flat of the hex to expand it just a little. Too much and removing the covers later is a problem. To remove the cover I use a screw driver on opposite sides and walk them off. This has served me for over 30 years.
     
  6. Silicone for me as well!
     
  7. hattrick150
    Joined: Jan 3, 2011
    Posts: 36

    hattrick150
    Member

    I have used a couple drops of red loctite.

    Posted using the Full Custom H.A.M.B. App!
     
  8. You could also use a center punch and dimple a side or two. May give you more control over tightness. Tape of some kind would also work to tighten them.
     
  9. I never had to do anything,just taped them on and in the 13 years I owned the car I never lost one. HRP
     
  10. hari kari
    Joined: Aug 4, 2011
    Posts: 42

    hari kari
    Member
    from michigan

    Red high temp silicone
     
  11. squeeze all nut caps in a vice , for caps that are loose very carefully, silicone sounds better
     
  12. flatoz
    Joined: May 11, 2003
    Posts: 3,172

    flatoz
    Member

    vote #2 for the red high temp silicone. done me well for 12 years
     
  13. Putputboom
    Joined: Mar 25, 2012
    Posts: 279

    Putputboom
    Member
    from Fresno

    All the acorns are loose on my flathead but in the 4 years of driving it I have yet to loose a single one
     
  14. 1954fordkustom
    Joined: Jun 14, 2010
    Posts: 593

    1954fordkustom
    Member

    I used a chisel on mine as well. Pretty easy to do


    Posted using the Full Custom H.A.M.B. App!
     
  15. 29AVEE8
    Joined: Jun 28, 2008
    Posts: 1,384

    29AVEE8
    Member

    When I built my first flathead in 1965 I couldn't afford nut covers (I was 15 and all of my income came from mowing lawns in the hood in Calimesa), sooo I painted each bolt head (8BA) with aluminum paint, Testors model paint and a small brush. Masked around each of six sides of each bolt, took all day. You wealthy guys and your chrome accorns......... I used to lust after the nut covers at Western Auto... story of my life.
     
  16. waxhead
    Joined: May 11, 2013
    Posts: 1,173

    waxhead
    ALLIANCE MEMBER
    from West Oz

    vote #3 for the red high temp silicone.
     
  17. dsiddons
    Joined: Mar 6, 2006
    Posts: 1,471

    dsiddons
    Member
    from Indiana

    Put a little tape on the head nut.


    Posted using the Full Custom H.A.M.B. App!
     
  18. 42merc
    Joined: Dec 19, 2010
    Posts: 749

    42merc
    Member

    Just a dab of plain old silicone.
     
  19. 3340
    Joined: Jun 4, 2010
    Posts: 576

    3340
    Member

    lite squeeze in vise worked for me.
     
  20. Mike51Merc
    Joined: Dec 5, 2008
    Posts: 3,855

    Mike51Merc
    Member

    Two ways I've used:

    1. Punch a dimple on one side with a centerpunch. Install with dimple on blind side.

    2. A bit of electrician's putty. Stays pliable & re-useable.
     
  21. The 41Dude
    Joined: May 10, 2007
    Posts: 188

    The 41Dude
    Member

    I've had them on 2 different Flathead Motors and used the red Loctite on both. Never had one come loose.
     
  22. pasadenahotrod
    Joined: Feb 13, 2007
    Posts: 11,776

    pasadenahotrod
    Member
    from Texas

    Now I'll guess you'll want those wonderful 2-piece spark plug covers.
     
  23. pigpen1
    Joined: Nov 9, 2010
    Posts: 75

    pigpen1
    Member

    I used thin strips of a beer can tapped on with a leather hammer.
     
  24. TheKeystoneKid
    Joined: Jul 10, 2013
    Posts: 56

    TheKeystoneKid
    Member
    from Allentown

  25. tommy
    Joined: Mar 3, 2001
    Posts: 14,757

    tommy
    Member Emeritus

    I just painted the engine and put the nut covers on while the paint was still wet. they never moved.
     
  26. hardtimesainit
    Joined: Jan 24, 2009
    Posts: 454

    hardtimesainit
    Member

    Hey Dave,
    There IS an option to the 'covers'....use polished stainless steel acorn nuts.
    If you did not know, they are available and look nice....and are PRICEY!
     
  27. AV8Nilebo
    Joined: Oct 6, 2016
    Posts: 17

    AV8Nilebo
    Member
    from Sweden

    But ive heard that you never should mix carbonsteel with stainless especally if there is hot and cold.

    I am thinking of get ss for my '46 flathead, have tou tried with ss nuts on your cylinder heads?
     
  28. Rustygt
    Joined: May 18, 2014
    Posts: 184

    Rustygt
    Member
    from Emeryville

    I used liquid soilder
     
  29. Bearing Burner
    Joined: Mar 2, 2009
    Posts: 904

    Bearing Burner
    Member
    from W. MA

    Best way is to use stainless acorn nuts.
     
  30. duncan
    Joined: Aug 23, 2006
    Posts: 1,138

    duncan
    ALLIANCE MEMBER

    RTV Silicone works just fine and you can pry them off easily. Nothing wrong with the original head bolts


    Sent from my iPhone using The H.A.M.B. mobile app
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.