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Knock Board use on other motors

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  • Knock Board use on other motors

    I expect the knock board was developed for the Subaru and Evo with use of FFT data for characterizing the spectrum, but much of the application could be extrapolated to other motors. Maybe not for closed loop and MBT targets but nevertheless helpful in tuning and experimentation.

    The knock frequency is different and I/P sync and timing are changed, but I don't see this as insurmountable. Maybe ignorance is bliss, but you gotta start somewhere.

    What info is required to customize to a different engine? I am sure considerable time and effort was expended to develop the software but how hard can it be? Can anyone estimate?

  • #2
    A sound recording is required. This will take some effort. what engine
    did you have in mind?
    He gets his lap dogs to do his talking for him. Buzzard is a good example.

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    • #3
      I have a Datsun 280Z Custom turbo. The engine is the L28, 6 cyl inline with 86 mm bore.
      Attached Files

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      • #4
        Anyone know of a listing or something so people know what is out there? i dont want to go out and get my car recorded if there is already something out there for 1JZ or 2JZ
        CISCOKIDS
        The Gentlemen's Club
        Midnight Rocker

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        • #5
          The 1J and 2J engines have not been done yet.

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          • #6
            Hey Chris, what all is involved in the recording?

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            • #7
              You need a very slow acceleration "free rev" recording the knock sensor and tacho pulse/sync pulse.
              Ian tells me a 109-6 chip will send a short duration sync pulse out on the tacho output so a two channel recorder can be used.

              Then need a very slow ramp up on the dyno recording the same inputs with very slight knock. Engine load is suggested 100kPaA .

              I would urge you to seek professional technical experience if you are not familiar with the procedure.
              He gets his lap dogs to do his talking for him. Buzzard is a good example.

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              • #8
                What happens when you get the recording.

                Example. I pay for a 1JZ recording. do i own that recording or does the tuner or does autronic?
                CISCOKIDS
                The Gentlemen's Club
                Midnight Rocker

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                • #9
                  Originally posted by ROBAPHENT View Post
                  What happens when you get the recording.

                  Example. I pay for a 1JZ recording. do i own that recording or does the tuner or does autronic?
                  I am not sure how that works. In the case of the injector
                  calibration if I send an injector to Autronic (And i have sent many)

                  the information gained. is made available for all to use. Thus information generated at my cost is freely available.
                  He gets his lap dogs to do his talking for him. Buzzard is a good example.

                  Comment


                  • #10
                    Originally posted by ROBAPHENT View Post
                    What happens when you get the recording.

                    Example. I pay for a 1JZ recording. do i own that recording or does the tuner or does autronic?
                    Are you looking for a licencing agreement?
                    He gets his lap dogs to do his talking for him. Buzzard is a good example.

                    Comment


                    • #11
                      No just wondering what happens.

                      Happy to donate some money towards getting a 1JZ recorded, since my engine will not be in my car for some time.

                      Know a rough price in Aust?

                      being it as 1JZ and 2JZ have the same bore size would the recordings be the same as i will have my 2JZGE VVti running sooner then my 1JZGTE
                      CISCOKIDS
                      The Gentlemen's Club
                      Midnight Rocker

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                      • #12
                        Thanks Chris. Sounds reasonable to perform, if assured could be applied to knock board config.

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                        • #13
                          Originally posted by TurboDave View Post
                          Thanks Chris. Sounds reasonable to perform, if assured could be applied to knock board config.
                          Dont understand the reply?
                          He gets his lap dogs to do his talking for him. Buzzard is a good example.

                          Comment


                          • #14
                            Back on this , it is need to record the "sound" OR the "output signal" if the knock sensor .?

                            What is the requirement of the recording (sample/sec , Hz , amplitude, Duration)?

                            Example of correct recording instrument?

                            I need complete custom knock control , my other choice is plex tuning knock detector , which retail 900-1000 USD and can give 0-5 volt output to SM4

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                            • #15
                              I'm in the same boat but was going to go HKS knock amp, already suited to JZ engines and also outputs a 5V reading, just because after purchase of knockboard then paying for a recording it does through the price up there.
                              CISCOKIDS
                              The Gentlemen's Club
                              Midnight Rocker

                              Comment

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