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Thread: Spark plugs

  1. #31
    Join Date
    Feb 2004
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    Silver Lake Sand Dunes MI
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    1,490

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    Quote Originally Posted by militarypotts View Post
    So, after all is said and done, we've been running the wrong plugs if we're using the 2344's. Being my 2344's are almost new, is it worth it to replace them now? I just put them back in a week ago and sure don't look forward to removal again. Correct to say the 2407's run hotter and are better for slower driving?
    I think the biggest difference is the ease in installing them due to the shorter length. I have not really noticed much performance difference between the two heat ranges. I would just stick with what you have until its time for replacements, and then just order the 2407's instead.
    Dave
    Delta Team Decals: http://www.deltateamdecals.com/

  2. #32
    Join Date
    Jun 2009
    Location
    Mt. Prospect, Illinois 60056
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    Thanks Dave, that's what I was hoping to hear.
    militarypotts Spec/4 Military Police, Vietnam Era, "Does the noise in my head bother you? Welcome to the Twilight Zone!"

  3. #33
    Join Date
    Jan 2011
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    Fernandina Beach, FL
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    Let me tell you what has happened with me.

    45 years ago, my 1968 truck would foul plugs if I ever drove around town, meaning I had to drive fast and hot like on the Autobahn. I found out how to detect the fouled plug and was able to easily change it because one of my buddies in the motor pool gave me the crow's foot wrench to take the shield off.

    Now, the truck that I have now does not burn oil or foul plugs. So, I am from the camp of "If it ain't broke, don't fix it." That said, I am not going to change the plugs. Now that is a mouthful and it simply means that I agree with the post above. The shorter plugs are easier to change. But the longer plugs, should they be working just fine ... leave them alone. Heck, you may never have to mess with them.

    I do NOT advocate changing plugs if everything is working OK right now. Make sense?

  4. #34

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    when I ran the stock engine I run the same plugs it came with for 15 + years with no problems.

  5. #35
    Join Date
    Jun 2009
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    Mt. Prospect, Illinois 60056
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    Makes perfect sense Don.
    militarypotts Spec/4 Military Police, Vietnam Era, "Does the noise in my head bother you? Welcome to the Twilight Zone!"

  6. #36
    Join Date
    Jan 2011
    Location
    Fernandina Beach, FL
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    3,689

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    Quote Originally Posted by md1970 View Post
    when I ran the stock engine I run the same plugs it came with for 15 + years with no problems.
    Since my truck must have better valve seals than the Germany truck, I too don't seem to have a problem. I will try to get the shorter plugs. I have the long ones (new) in my parts bin. I don't plan to pull them out as long as they continue to perform appropriately too.

  7. #37

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    Top is m38a1 plug according to a chart somebody posted a couple months ago


    bottom is autolite 2407

    difference


  8. #38
    Join Date
    Jan 2011
    Location
    Fernandina Beach, FL
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    As they say, "You hit the nail on the head". Exactly the situation....

  9. #39
    Join Date
    Jan 2011
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    Fernandina Beach, FL
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    Well, I have not heard from O'Reilly's yet. I went to two different people there, both of which took lots of time and finally did find the Autolite 2407 plug. The last person that I spoke to was the Assistant Manager. He took my name and phone number and was going to see about the availability. That was about two weeks ago and still no call. So ... I guess that O'Reilly's is a bust for now.

    Lets not stop trying!

  10. #40

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    I wrangled around with O'Reilly"s for two weeks, talked to a few stores and online customer service. Basically I got nowhere, a number of dead end answers, generally," can't get them". I live in Pa., where there are virtually no O'Reilly's yet, so I had to ask by phone. Best answer was from the store manager in Erie, Pa., he told me he could order them, but he'd have to order 12 packages of 4.
    Basically, the O'Reilly thing IS a bust.
    But, the local Napa can get the 2407 plugs for around $8.00 ea., special order. So, at least they are obtainable.

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