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  1. #1
    Beagleman62's Avatar
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    Gap for NGK iridium plugs

    I'm going to change my plugs today and needed caps for the iridiums.
    I started to go by an import tune up shop and see if they had some old plugs I could get the caps from but went up the street to Advance Auto and picked up 4 $1.19 small engine plugs and used the caps from them.
    They also had a filter wrench for $5.99. I found the iridiums at NAPA for 8 bucks a plug. He said they usually keep them in stock. (he didn't have the PMR9B plugs and didn't stock them) I went to the main NAPA wharehouse in my area that also has a storefront. A question for people who have used them. The shop manual says .024-.028 gap for the stock plugs and I think someone posted that the iridiums should be .032. Which one is correct?


  2. #2

    Join Date
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    I bought my from the O'Reilly Auto parts for $6.99 ea. Installed 2 weeks ago and been riding few hours now no problem. Used straight out from the box, no adjust.


    Quote Originally Posted by Beagleman62 View Post
    I'm going to change my plugs today and needed caps for the iridiums.
    I started to go by an import tune up shop and see if they had some old plugs I could get the caps from but went up the street to Advance Auto and picked up 4 $1.19 small engine plugs and used the caps from them.
    They also had a filter wrench for $5.99. I found the iridiums at NAPA for 8 bucks a plug. He said they usually keep them in stock. (he didn't have the PMR9B plugs and didn't stock them) I went to the main NAPA wharehouse in my area that also has a storefront. A question for people who have used them. The shop manual says .024-.028 gap for the stock plugs and I think someone posted that the iridiums should be .032. Which one is correct?

  3. #3
    TheBaron's Avatar
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    NGK warns not to adjust the gap on the Iridiums. Mine were fine all gapped correctly. Not sure what it was but it was covered in a previous thread. Just tosh em in. they will work fine.

  4. #4

    GAP

    I was told the same, right out of the box, I have 4 on stand by, and never leave home with out them! lol But after 24 hrs the so called failling originals are running great! Knock on wood

  5. #5
    tomgtv's Avatar
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    Don't Gap Iridium's

    Just got my Iridium's a few minutes ago. Right on the Invoice in
    big print "Do not Gap Iridium spark plugs, you will snap the electrode".

    The center electrode looks more like a wire to me than the OEM tapered
    shaft.

    We'll see how they do. NGK techs told me they would run better.

    My OEM's failed at 35 hours. I was thinking of sending them back to
    NGK and have them tell me why they failed. Visually they look very good,
    just a little discolored.

  6. #6
    Beagleman62's Avatar
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    Thanks for all the replies. I guess I'll stick them in as is.
    Would it hurt to check them with my feeler gauge just to see what they are gapped at?

  7. #7
    TheBaron's Avatar
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    Quote Originally Posted by Beagleman62 View Post
    Thanks for all the replies. I guess I'll stick them in as is.
    Would it hurt to check them with my feeler gauge just to see what they are gapped at?
    I checked mine. Shouldnt hurt.

  8. #8
    1200 stx-r's Avatar
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    go to www.ngk.com then powersports and fill in the req'd info it will tell you exactly what gap you should have

  9. #9
    FZS-T
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    can anybody tell me the part # for this plugs???

    and where could i get the little bottom screw for it as well!!! thanks
    Last edited by EGGonz; 08-08-2007 at 09:36 PM.

  10. #10
    Formerly Ultra250 TN Aquaholic6801's Avatar
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    I got my Iridiums for my dealer today and got them covered under warranty, they also had some old plugs there that I took the caps off, I ran them for a lil while today, but it was so freaking hot I got off the water after about an hour out there, It was 106* and very humid when I parked my truck, and I was down @ 250 RPMs.the water temp is 88*-89*.Put them in right from the box.

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