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Technical 7mm versus 8mm spark plug wire

Discussion in 'The Hokey Ass Message Board' started by mwhistle, Sep 9, 2018.

  1. We use KILLoMETER
     
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  2. BamaMav
    Joined: Jun 19, 2011
    Posts: 6,759

    BamaMav
    Member
    from Berry, AL

    I just put a set of 8.8 mm Accel plug wires on my car. Thought I had bought 8 mm, misread the ebay ad, they were a tight fit in my holders, but worked. I could feel the difference the first time I drove it, no more miss fires, but that was probably only because the set of wires I had on it were the best looking ones from two different old sets and were who knows how old. The new plugs probably made a big difference, too!
     
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  3. Harv
    Joined: Jan 16, 2008
    Posts: 1,000

    Harv
    Member
    from Sydney

    Damn. I'd heard everything is bigger in Texas, but them is some big bugs if you need a KilloMETER to measure them in Maryland :eek::D

    Cheers,
    Harv
     
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  4. mrspeedyt
    Joined: Sep 26, 2009
    Posts: 990

    mrspeedyt
    Member

    why do I want some mm’s now?
     
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  5. MM are used in every Country EXCEPT the United States and Myanmar. Myanmar is a very Third World nation.

    I wonder who is out of step with the rest of the World.
     
  6. Peanut Butter M&M’s please
     
    mrspeedyt likes this.
  7. They just appear bigger….small State.
     
  8. Budget36
    Joined: Nov 29, 2014
    Posts: 13,275

    Budget36
    Member

    Ruger makes a 9mm, used to be a US company.
    I’ve grown up with inches, feet, yards etc. it works, I see no reason to change.
     
  9. I'm reminded of a song from South Park.
     
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  10. Mr48chev
    Joined: Dec 28, 2007
    Posts: 33,986

    Mr48chev
    ALLIANCE MEMBER

    Screenshot (374).png
    Haven't measured any M&Ms lately but have to beleve even with all the nonsense going on they are bigger than .039 in diameter.
     
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  11. SS327
    Joined: Sep 11, 2017
    Posts: 2,541

    SS327

    The rest of the world is out of step with us. So Burma is advanced in their use of math like us Americans. When will the rest of the world catch up is the question.
     
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  12. You forgot about Liberia.;) That's the third and only other country in the US camp.
    I guess after inheriting it from the British you're very reluctant to move on...even though they did.:D
     
  13. enjenjo
    Joined: Mar 2, 2001
    Posts: 2,690

    enjenjo
    Member
    from swanton oh

    mms are used here too, and have been for years. Flat head Fords with 18mm spark plugs and 7 mm plug wire. Model As with metric wheel bearings, and metric king pins. 1" tape is actually 25mm. There is much more too.
     
  14. Beanscoot
    Joined: May 14, 2008
    Posts: 3,080

    Beanscoot
    Member

    Funny that a lot of old fashioned, obsolete technology is popular in our hobby.

    The main reason that everyone else converted to that French system of measurements is because they were forced to. We're supposed to use it here too, but most of the drawings I get as a machinist are still in good old English units.
     
    firstinsteele likes this.
  15. solidaxle
    Joined: Jan 6, 2011
    Posts: 662

    solidaxle
    Member
    from Upstate,NY

    They should fit you may need to silicon them up to slide in. When I installed a pertronix unit I switched to 8mm non-solid wires. I just drilled the cap out.
     
  16. Model A kingpins are 13/16". Just saying.
     
  17. southerncad
    Joined: Feb 5, 2008
    Posts: 958

    southerncad
    Member

    OK, saw it my Bad....
     
  18. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 6,257

    Ebbsspeed
    ALLIANCE MEMBER

    But which of the measuring systems is "traditional"?
     
  19. Paul
    Joined: Aug 29, 2002
    Posts: 16,413

    Paul
    Editor

    back before retirement when i still had a job,
    i ran layout crews for commercial construction.
    some of the guys in the field prefered to run their survey equipment using metric units for increased accuracy,
    most used decimal feet,
    but they all had to be converted to inch feet for the various trades.

    my daily driver, a twenty year old american made pickup,
    has both metric and sae fasteners from the factory

    as for plug wires, anything other than 7mm just looks wrong.
     
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  20. Most of the world uses millimeters because England invaded most of the world and forced them at gunpoint to use millimeters. :eek:
    They also tried to make everybody drive on the wrong side of the road but they were a little less successful at that. :cool:

    leftside.jpg
     
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  21. G-son
    Joined: Dec 19, 2012
    Posts: 1,294

    G-son
    Member
    from Sweden

    Well... Some imperial measurments are based on objects on the earth (such as somebodys foot), mostly relatively young reference objects compared to earth itself. Other imperial measurments seem to be based on somebody throwing dice while being drunk.

    The meter, on the other hand, is directly based off the size of the earth, so it predates everything that has evolved on earth - the earth existed long before anything evolved on it. Therefore metric is more traditional than imperial. :D
     
  22. alanp561
    Joined: Oct 1, 2017
    Posts: 4,647

    alanp561
    ALLIANCE MEMBER

    Metric is easy if you just get a metric ruler. I may have mentioned some time ago about a maintenance shop I worked in. The company was buying four feet wide (approximately) material blower fans that ran abrasive material through them that wore out fairly rapidly. They were getting them from a company in Belgium and they were all metric. I suggested that we cut the hubs out of the old ones and make our own blowers. The other guys in the shop threw all kinds of objections to that stating it would be too hard to convert all the measurements on the drawings to feet and inches. I went to a local office supply and bought a meter long ruler and just used the drawings as they were. Saved the company a lot of money. Never got a thank you or a nickel out of it.
     
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  23. gatz
    Joined: Jun 2, 2011
    Posts: 1,828

    gatz
    Member

    ^^ once had a job for local company that had imported German machinery. They sent over prints of an additional mechanism designed by the same German company that was all metric and wanted it made with US "standard" steel parts/material, yet keep the same basic design and function. It had to fit the existing larger piece of equipment; i.e "bolt-on" That was a challenge to say the least. Lots of close conversions, but nothing exact. Took a while
     
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  24. that's what you say if the pie is mediocre. If its really good you say, MMMMMmmmmmmmmmnnnnnnnn

    It may vary from one brand to the next but the difference is normally thicker insulation.
     
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  25. [QUOTE="G-son, post: 14595975, member: 206570")

    The meter, on the other hand, is directly based off the size of the earth, so it predates everything that has evolved on earth - the earth existed long before anything evolved on it. Therefore metric is more traditional than imperial. :D[/QUOTE]


    I thought the meter was based on the distance between your average Frenchman’s hands when raised above his head surrendering.(I’m part French so……sue me) :)
     
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  26. I thought England still uses it for some things.
    “Despite predominantly using Metric measurements, in the UK we still do use elements of Imperial measurements in everyday life. The distance of a road is still typically measured in miles, and drinks come in pints. Feet and inches are also used to measure height, as well as pounds and ounces to measure weight.”
     
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  27. Moriarity
    Joined: Apr 11, 2001
    Posts: 31,166

    Moriarity
    SUPER MODERATOR
    Staff Member

    No such thing as 8mm wires in 1965....... fat spark plug wires are ugly....
     
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  28. SS327
    Joined: Sep 11, 2017
    Posts: 2,541

    SS327

    I thought the meter was based on the distance between your average Frenchman’s hands when raised above his head surrendering.

    That is probably the best explanation of anything I have ever heard!
     
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  29. alanp561
    Joined: Oct 1, 2017
    Posts: 4,647

    alanp561
    ALLIANCE MEMBER

    Damn, and I was just getting the "stones" conversion worked out. ;)
     
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  30. dreracecar
    Joined: Aug 27, 2009
    Posts: 3,476

    dreracecar
    Member
    from so-cal

    AND every airplane and spaceship in the world uses AN/NAS bolts to put it together using standard thread pitches and not metric
     
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