Announcement

Collapse
No announcement yet.

spark plugs for FI

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    spark plugs for FI

    So i cant seem to find a solid answer as to which ones should be used for 350-450hp.
    ZFR5FIX-11
    ^ i know thats the stock iridium spark plug BUT if i type in ZFR6FIX-11 i can find those but since im trying to aim for 400-450hp i thought 2 steps colder would be best. and i cant find a ZFR7FIX-11.
    is there any recommendations as to which ones to run?

    #2
    bump... anyone?

    Comment


      #3
      NGK BKR7E is what I run on my boosted F22B2 @16psi, gapped at .030

      Comment


        #4
        Originally posted by JDMef9 View Post
        NGK BKR7E is what I run on my boosted F22B2 @16psi, gapped at .030
        how much hp are you running? since psi doesnt really mean a whole lot. ill be running 20+ but from a gt28

        Comment


          #5
          Was never on a dyno and its 16psi on a T3/T4E 57trim Garrett with .48ar turbine housing. Those plugs should be good for your set-up as well just might be gapped different closer to .025 I'm guessing.

          Comment


            #6
            anyone else have any insight on this?

            Comment


              #7
              If you're running over 400 hp I'd gap at .020-.024. Your gonna have ignition breakage at .030 for sure.

              What engine? F or H? Cause h22 stock plugs are 6 right? And F22s run 5. I'd definitely go more than 2 colder.

              Either way, for an 8 range ngk 4554

              And 9 ngk 5238

              If those don't work just try to get a cold copper plug.

              Comment


                #8
                Originally posted by F22Chris View Post
                If you're running over 400 hp I'd gap at .020-.024. Your gonna have ignition breakage at .030 for sure.

                What engine? F or H? Cause h22 stock plugs are 6 right? And F22s run 5. I'd definitely go more than 2 colder.

                Either way, for an 8 range ngk 4554

                And 9 ngk 5238

                If those don't work just try to get a cold copper plug.
                f22a and yes h22 is a 6 range.. so i guess i should go for an 8. what ive heard is normally 1 step colder for every 100hp. and at 400ish that would put me at ~250 over

                Comment


                  #9
                  Are you tuning this yourself? Or by a reputable tuner?

                  Comment


                    #10
                    Originally posted by JDMef9 View Post
                    Are you tuning this yourself? Or by a reputable tuner?
                    either speedfactory or facetuned in washington

                    Comment


                      #11
                      I think you should talk with your tuner about which plug will be the best for your set up.

                      Comment

                      Working...
                      X