Ground strap broken off plug

Discussion in 'Race 400/430/455' started by BQUICK, Mar 24, 2022.

  1. standup 69

    standup 69 standup69

    Looks like too hot of a plug with a projected end ..must of been an unhappy combustion chamber .
     
  2. BQUICK

    BQUICK Gold Level Contributor

    Could be from the time I made a pass with water pump OFF.....got toasty....
     
    dan zepnick likes this.
  3. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

  4. BQUICK

    BQUICK Gold Level Contributor

    I think I'll give them a shot....maybe hold up better being a "racing" plug....but that might only mean that it is non-resistor....
     
  5. DaWildcat

    DaWildcat Platinum Level Contributor

    x2 on the plated plug without anti-seize.

    You're carbed and not EFI, right? The resistor plug helps with RFI (radio frequency interference).

    If electronics aren't onboard, don't worry about resistor plugs. I'm guessing that listening to the radio is not a priority!

    Devon
     
  6. JESUPERCAT

    JESUPERCAT No Slow Boat

    I use the NGK plugs on the 12-1 462 in the dragster. BR5ES - BR7ES depending on weather conditions. No cooling system...
    I've been very happy with them, only 1 prefailure.
     
  7. BQUICK

    BQUICK Gold Level Contributor

    Yeah only listen with motor OFF. :D
     
  8. BQUICK

    BQUICK Gold Level Contributor

    I think I was running on 7 cylinders alot of the time. Left a small puff of smoke leaving the line.
    Last time out i didn't need to do much to slow it to 10.00.
     
  9. dan zepnick

    dan zepnick Well-Known Member

    I had this happen using ngk boxes. Switched tho number 52,racing plug and haven't had any problems.
     
  10. BQUICK

    BQUICK Gold Level Contributor

    NGK boxes?
     
  11. 12lives

    12lives Control the controllable, let the rest go

    NGK and autolite makes a plug with no side electrode: 10013763_atl_ar3932x_pri_larg.jpg 51bvKHBT3dL._AC_SL1350_.jpg
     
  12. BQUICK

    BQUICK Gold Level Contributor

    Always wondered how a surface gap like that NGK would run in a car. I use them on old Mercury outboards...
     
    Mark Demko likes this.
  13. BQUICK

    BQUICK Gold Level Contributor

  14. BQUICK

    BQUICK Gold Level Contributor

    Going with 7173 plug on right...less projected nose and shorter ground electrode.
    FR5 (7373) is on left
     
  15. MOBUICK

    MOBUICK Member

    BQuick,
    Are you running a Edelbrock head?
     
  16. BQUICK

    BQUICK Gold Level Contributor

    No TA Stg1 SE
     
  17. 482

    482 Big Member

    Anti seize compound is usually ground-up Aluminum or Copper in a greasy base, both Al and Cu conduct heat better than Cast Iron, same or better than cast Aluminum, why do you feel it makes the plugs overheat? Would a solid Copper plug washer, like a solid Copper head gasket, make any noticeable difference? I remember back in the day seeing Shirley Muldowney's pit crew pull the heads and even the center insulators were burned completely away and gone, from all three spark plugs in each cylinder. Of course fuel motors used to run like a diesel after the first few hundred yards I'm told, aah no I'm not really that damn old, just sayin'.
     
  18. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    It's kind of like opinions on engine oil. If you put "anti seize and spark plugs" into your search engine of choice, you'll read opinions on both sides of the issue. None of the major spark plug manufacturers recommend anti seize be used on the plug threads, according to one Forum post I found,

    "NGK recommends:
    "Do not use anti-seize. Anti-seize reduces electrical and thermal conductivity between the spark plug and head; and increases the installed torque, which can damage head threads. The spark plug holes must always be cleaned prior to installation, or you may be torquing against dirt or debris and the spark plug may actually end up under-torqued (dry threads), even though your torque wrench says otherwise.

    All NGK Spark Plugs are manufactured with special shell plating on the metal body. The use of anti-seize on spark plugs is only recommended on those brands that do not offer a special metal shell plating. Install spark plugs with a compression gasket finger tight until seated and then turn approximately 1/2 to 2/3 turns. Spark plugs without a compression gasket (taper) should be installed finger tight until seated and then turn 1/16 turns."

    Racing Spark Plug Installation:
    Do not use anti-seize. To install spark plugs in the engine, first tighten them by fingers, then retighten with the right tightening torques as shown below, using a plug wrench. Either excessive tightness or looseness will cause troubles. Looseness sometimes causes pre-ignition because heat cannot disperse. On the other hand, excessive tightness can damage the threads of both the cylinder head and the spark plug."


    Champion recommends:
    "Champion recommends that you do not use an anti-seize compound, since one has already been applied to the plugs at the factory. Next, install the spark plugs finger tight and, if using a taper seat spark plug, use a ratchet to rotate 1/16 of a turn. If using a gasket seat type spark plug, after installing finger tight, turn 1/4 to 5/8 of a turn. If this procedure is followed, spark plugs will not back out nor will they seize in the cylinder head."


    Autolite recommends:
    "We do not recommend anti-seize. Install 14mm plugs in aluminum cylinder head at 20-30 Nm (15 - 22 foot pounds) with CLEAN and DRY threads. We do not recommend the use of any anti-seize products for installing spark plugs. Anti-seize compounds are typically composed of metallic, electrically conductive ingredients. If anti-seize compounds come in contact with the core nose of the plugs, it can lead to a misfire condition.

    Anti-seize on the threads of your spark plugs will slow down the rate of heat transfer from the plug to the head. The worst place to use it is on the tapered seat, which is where the most heat transfer occurs between the spark plug and the cylinder head. Even just a small amount of anti-seize is the equivalent of using a hotter heat range spark plug.

    Anti seize compounds can also have a torque multiplying effect when installing plugs. This can lead to thread distortion and thread galling resulting in cylinder head damage. Autolite spark plugs are nickel plated to resist the effects of corrosion and seizing.

    NOTE: Spark plugs should be installed with clean and dry threads to avoid over-torquing or stretching the spark plug, which can, and often does, result in engine damage."


    Denso recommends:
    "Do not use anti-seize. Installation Key Points: (1) The threaded area of the cylinder head must be clean. (2) Using your fingers, screw the spark plug into the cylinder head, and tighten about 1/4-1/2 turn with a plug wrench. (Taper seat plug: about 1/16 turn). (3) Tightening too much may cause distortion of the plug housing, and in extreme cases could cause engine damage. Proper installation of the spark plug is important for life and performance of the spark plug. (4) Installation procedures shown above apply to new spark plugs without lubricating the threads.

    Torque Recommendations (dry threads). Whenever possible it is recommended that the spark plug should be installed by using a torque wrench. "

    Bosch recommends:
    "Do not use anti-seize. Bosch small engine spark plugs are constructed with a nickel chromium ground electrode for consistent performance and prolonged service life; Nickel-plated rolled threads offer complete anti-seize and corrosion protection. Built to withstand extreme operating temperatures and give more power, Bosch Super Start is ideal for all small engine applications."


    Having said that, it probably doesn't hurt to use a dab on the threads, but like everything else, some think, if a little is good, more is better.:)
     
    69GS430/TKX likes this.
  19. 482

    482 Big Member


    Thanks Larry, I'm much better informed now, I did not know there were all these recommendations, I'm going to stop using it on my Aluminum head plug threads, your the man!
     
  20. HotRodRivi

    HotRodRivi Tomahawks sighted overseas

    On aluminum heads is there a preferance of warm engine or cold one to pull the plugs out ?
     

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