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NGK BCPR6E-11 vs BCPR7ES-11

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  • NGK BCPR6E-11 vs BCPR7ES-11

    I know spark plugs have been discussed to death, but there's a few conflicting opinions I've read about what style of plug to use for a turbo. I noticed that Jason uses NGK BCPR7ES-11 plugs, and the Haynes manual also calls for BCPR6ES-11, with 7 obviously being a step colder but I'm told the owners manual (which I dont have) calls for BCPR6E-11.

    So what do the rest of you run? The BCPR6E-11 set with the V-groove which according to the owners manual and ngk.com is the correct plug for the Z31 or the ES models? I dont think that it would make all that much of a difference, but I'm just curious what the majority of ya'll run and why. Thanks!
    http://youtube.com/c/zcartube

  • #2
    I got BCPR7E-11..

    Few places suggest BCPR7ES
    -11.

    I would like to know what is the difference in E and ES.

    One place did say that E has been replaced with ES.


    Australia shoud be that warm place that 7 would be good.. Cold winter times i would use 6.
    Jukka Kivinen - Europe / Finland - '88 Turbo 2+2 Targa
    Datsun Nissan Sports Cars of Finland
    http://www.z31turbo.com / http://www.z31na.com

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    • #3
      Detailed information on what each number represents is here.

      The S refers to the material that the electrode insulator is made of from what I'm told, I'm just interested to see why choose one style over the other and the reason for it.
      http://youtube.com/c/zcartube

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      • #4
        According to my 1984 300ZX owner manual, the turbo's are recommended with BCPR*E-11, *5-7; and the non-turbo's are BCPR*ES-11, *5-7. The "S" nomenclature shown in the non-turbo recommended plugs references to a "standard 2.5mm electrode". The most obvious question is why the turbo models are not recommended to use these. My guess is that the turbo models would use a shorter electrode to help stop spark blowout. Either way, the BCPR*E-11's are not available in the US market anymore, maybe elsewhere too. I went to NGKs website in search of these specific plugs as well as to an authorized NGK dealer and came up with nothing. So, I have used the non-turbo recommended plugs for as long as I have owned my turbo Z's and had no troubles, as long as the heat ranges are correct. If you up the boost, then up lower the heat range of the plug.
        [strike:ff0tp92h]1984 300ZXT[/strike:ff0tp92h]
        [strike:ff0tp92h]1986 300ZX 2x2 NA2T[/strike:ff0tp92h]
        2000 Porsche Boxster
        2007 Toyota Yaris

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        • #5
          If you need plugs try this place.

          https://www.sparkplugs.com/ enter "dodgetalk" in the online coupon space for 10% off on orders over $25.
          1988 SS TURBO BEING RESTORE.
          http://www.cardomain.com/ride/2238220

          Comment


          • #6
            I currently run the BCPR6E-11's in my 9:1 VG30ET. Pretty satisfying results thus far. I'll consider a change once I finish intercooling my car.



            bemis wrote: According to my 1984 300ZX owner manual, the turbo's are recommended with BCPR*E-11, *5-7; and the non-turbo's are BCPR*ES-11, *5-7. The "S" nomenclature shown in the non-turbo recommended plugs references to a "standard 2.5mm electrode". The most obvious question is why the turbo models are not recommended to use these. My guess is that the turbo models would use a shorter electrode to help stop spark blowout. Either way, the BCPR*E-11's are not available in the US market anymore, maybe elsewhere too. I went to NGKs website in search of these specific plugs as well as to an authorized NGK dealer and came up with nothing. So, I have used the non-turbo recommended plugs for as long as I have owned my turbo Z's and had no troubles, as long as the heat ranges are correct. If you up the boost, then up lower the heat range of the plug.
            Are you referring to ANY of that series? I have no problem picking them up.
            Originally posted by Andrew84zx
            tell her your car is so fast it will make her panties fly off
            545 RWHP & 540 RWTQ

            Comment


            • #7
              Opps, I was referring to the #7 heat range plug for the turbo types
              [strike:ff0tp92h]1984 300ZXT[/strike:ff0tp92h]
              [strike:ff0tp92h]1986 300ZX 2x2 NA2T[/strike:ff0tp92h]
              2000 Porsche Boxster
              2007 Toyota Yaris

              Comment


              • #8
                mario88ss wrote: If you need plugs try this place.

                https://www.sparkplugs.com/ enter "dodgetalk" in the online coupon space for 10% off on orders over $25.
                Should that place have BCPR7E-11 plugs?
                Jukka Kivinen - Europe / Finland - '88 Turbo 2+2 Targa
                Datsun Nissan Sports Cars of Finland
                http://www.z31turbo.com / http://www.z31na.com

                Comment


                • #9
                  If the car is running more than 10psi, I use the 7. For anything 10 and under, the stock one works great.
                  Chuck Stong
                  300+ Parts and Performance owner
                  http://www.300-plus.com
                  2002 ZCOT president and always active member

                  Comment


                  • #10
                    Ok now we get to my exact reason for bringing this up...

                    There is no such spark plug as BCPR7E-11

                    http://www.ngk.com/results_fitment.asp?pid=BCPR7E-11
                    http://youtube.com/c/zcartube

                    Comment


                    • #11
                      300zxt wrote: Ok now we get to my exact reason for bringing this up...

                      There is no such spark plug as BCPR7E-11

                      http://www.ngk.com/results_fitment.asp?pid=BCPR7E-11
                      Yes there is..
                      sparkplug.com just don't have them.. it's just ngk retailer page


                      BCPR6E-11 is basic what you need to serch. after that ask one step colder plug.. 6->7.
                      They not list always colder plugs in pages.. just standard

                      BCPR7E-11 can be found ->
                      http://www.clubplug.net/
                      http://www.courtesyparts.com/Merchan...Category_Code=
                      Jukka Kivinen - Europe / Finland - '88 Turbo 2+2 Targa
                      Datsun Nissan Sports Cars of Finland
                      http://www.z31turbo.com / http://www.z31na.com

                      Comment


                      • #12
                        Well that's all well and good, but still doesn't really answer the topic question...

                        Why choose ES over E type, Jason is using the ES type which is actually specified for non turbos and I was just wondering why.
                        http://youtube.com/c/zcartube

                        Comment


                        • #13
                          300zxt wrote: Well that's all well and good, but still doesn't really answer the topic question...

                          Why choose ES over E type, Jason is using the ES type which is actually specified for non turbos and I was just wondering why.
                          The simple answer is the dude at napa store I ordered them from told me he could only get the BCPR*ES-11's in a 7 heat range, and not the BCPR*E-11.

                          I'm convinced there's really no difference between them (given the same heat range) on a modified car, but Nissan did use a different plug for a reason... so it makes me wonder if it's worth paying more to order them online for the next go.

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                          • #14
                            Ah ok, I was just curious is all... Even the haynes manual recommends NGK BCPR7ES-11 which had me wondering.
                            http://youtube.com/c/zcartube

                            Comment


                            • #15
                              I use NGK PFR6G11 plugs. They are for a Z32 NA. JWT told me that these are the plugs that have worked best for them in the Z31. Plug gap has been more an issue for me. I have blown out my spark at the stock gap. Had to tighten them down some. Still trying to find the optimal gap for me right now. High rpms (6,500-7,000rpms) still gets some spark blow out right now.
                              378whp 445wtq
                              http://mark86t.zmobiledetailing.com/.../v/Black+Hole/


                              Z Mobile Detailing, Las Vegas, NV

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