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Thread: Another spark plug question

  1. 07-02-2022, 06:41 AM #1
    Pantherfreak
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    Another spark plug question

    Greetings everybody.

    I have a set of new AGSF32PM (SP-493) plugs sitting here that a buddy was gonna use in his '01 2-valve Mustang, but he's not gonna need them now, so he gave them to me.

    My '04 Marauder could use a new set of plugs...but the manual calls for AWSF32EM plugs.

    With constant revisions to part numbers, I'm just not sure - are the SP-493s usable in the 4 valve, or are they a no go?

    I could use them in my '05 MGM, but it has recent plugs already.

    Any input would be greatly appreciated - I'm getting the itch to spend some time under the hood!
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  2. 07-02-2022, 10:08 AM #2
    fastblackmerc's Avatar
    fastblackmerc
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    Go to the spark plug manufacturers web site and see the spec of each.
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."
    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis



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  3. 07-04-2022, 07:11 AM #3
    Pantherfreak
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    Sorry - I forgot to mention that they are Motorcraft plugs. Their website is a bit difficult to navigate, as far as spark plug specs.
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  4. 07-04-2022, 07:33 AM #4
    fastblackmerc's Avatar
    fastblackmerc
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    I'll do half the work for you.....

    AGSF32PM specs:
    Center Electrode Core Material: Copper core
    Electrode Core Material: Platinum alloy
    Electrode Tip Material: Platinum ball
    Ground Electrode Core Material: Nickel alloy
    Hex Size: 5/8
    Insulator Type: Standard
    Length: 3.124
    Manufacturer Heat Range: 4
    Reach: 0.679 in
    Resistor: Yes
    Rib Configuration: Standard
    Seat Type: Tapered
    Side Electrode: Yes
    Terminal Top Type: Fixed
    Thread Diameter: 14 mm
    Tip Configuration: Single platinum
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."
    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis



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  5. 07-05-2022, 05:23 PM #5
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    BLACKMARAUDER04
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    Jim, What are the Specs for SP505, AGSF22CA or SP505A? I've been using these for years, now the thread size is too small?
    What thread size does the Marauder 4.6L have?
    Thanks,

    P.S. Does anyone have a telephone number for Motorcraft Parts?
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  6. 07-06-2022, 07:38 AM #6
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    BLACKMARAUDER04
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    Fordparts.com telephone number: 844-589-0060

    The only Spark plug they recommended was SP413, or AGSF32N, This is a Platinum-Iridium Spark Plug .

    The cs person could not tell me the thread size or any specifications.

    Any help would be great. I'm looking for a copper plug with a 1 step colder range. Recommended because of the tune in the car.

    I can't even find info on the Motorcraft website.
    Last edited by BLACKMARAUDER04; 07-06-2022 at 07:45 AM. Reason: add
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  7. 07-06-2022, 08:03 AM #7
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    RubberCtyRauder
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    NGK 4177 gapped to .045.. MO's Speed Shop
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

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  8. 07-06-2022, 03:58 PM #8
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    fastblackmerc
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    Quote Originally Posted by RubberCtyRauder View Post
    NGK 4177 gapped to .045.. MO's Speed Shop
    This is the recommended plug......
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."
    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis



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  9. 07-06-2022, 04:30 PM #9
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    BLACKMARAUDER04
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    Ordered from Rock Auto for $1.75ea plus shipping


    Sent from my iPhone using Tapatalk
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  10. 07-18-2022, 02:10 PM #10
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    BLACKMARAUDER04
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    So, these plugs were the same as the SP505 plugs. I finally figured out why the #5 plug was different. The cylinder has a helix tap on it. Advance Auto had the correct M14-1.25 thread fixer in stock. You need to attach this permanently . Advance wanted $17 for thread lock. Purchased Harbor Freights’ red thread lock for $2.29.
    Put the plug in today with a new COP, DG543. No more engine mis-fires.


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  11. 07-19-2022, 04:48 AM #11
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    musclemerc
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    ^^^ You should have done some research and utilized a lock-n-stitch or something better than a helicoil.

    It will fail just question when.
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  12. 07-25-2022, 01:59 PM #12
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    I didn’t do it, my mechanic did the tap.
    This was probably over a year ago.
    He must have thought this was the most logical way to fix this thread.
    This was the second time the #5 cylinder blew the spark plug out.


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  13. 07-26-2022, 09:22 AM #13
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    blazen71
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    NGK TR6 or whatever number may supersede is the one step colder copper plug
    You "feel" the difference because you want to "feel" the difference. Since you just spent money on the upgrade you "have" to feel the difference

    I'm looking to eliminate the double pump process I have to follow right now to get the pedal hard

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  14. 07-26-2022, 09:49 AM #14
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    musclemerc
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    Quote Originally Posted by BLACKMARAUDER04 View Post
    I didn’t do it, my mechanic did the tap.
    This was probably over a year ago.
    He must have thought this was the most logical way to fix this thread.
    This was the second time the #5 cylinder blew the spark plug out.


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    My point exactly. Do it right the first time or don't do it at all.
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  15. 08-06-2022, 04:08 AM #15
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    M91
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    Quote Originally Posted by RubberCtyRauder View Post
    NGK 4177 gapped to .045.. MO's Speed Shop
    Should i gap it? I just installed mine without gapping it🥲

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