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  4. Disconnecting the "rev limiter"

Disconnecting the "rev limiter"

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  • RidinRailsR Offline
    RidinRailsR Offline
    RidinRails
    wrote on last edited by
    #11

    why the hell would you want to do this anyways?

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    • z31Z Offline
      z31Z Offline
      z31
      wrote on last edited by
      #12

      JN210;186036 wrote:
      Would it be a good idea for an automatic? If i did disconnect the governor would it still shift or would the RPM's keep getting higher? I want to disconnect my governor but I'm afraid my car wouldn't shift "seeing as how it's the "rev limiter" " so i guess my main question is "Would my car still shift after disconnecting the rev limiter"?

      Thanks The answer to your question is yes, the transmission will work the same, and No I wont tell you how to do it.
      Like every one else said, why would you want to raise the red line? :icon_scratch:

      86 Nissan 300zx 12.43 @ 114 Top End Dragways

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      • ColinC Offline
        ColinC Offline
        Colin
        wrote on last edited by
        #13

        In many cars that I've come across have rev limiter set to maximize factory settings.

        Using my swap as an example:

        makes 240 hp and trq on an N/A 6. redlines @ 6200. Only available in an automatic, and uses 2 indiviual intake manifolds connected by an Iris valve that can open for "power" mode. Has serious breathing and exhaust issues.

        If i freeze the iris valve open, remove the 6 miles of intake and put on a high flow filter, then run good exhaust, the engine can make power up to 7500 RPM. The reason they limited the reving was because of a shitty exhaust/clearing stroke on the cams plus the poorly flowing exhaust found on all subarus.

        I'm sure other cars have similar setups...

        do the research, what are the limitations and why? check, check, data log, then do...

        Attention Go Green! advertisers: For every Go Green! logo I have to see, I will throw another can of weed killer on the tire fire in my back yard

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        • GrrG Offline
          GrrG Offline
          Grr
          wrote on last edited by
          #14

          yeah, not a cool thing to do. with your stock cams, your car stops making ANY power above 5600. Jason had big ass cams in his with the N/A auto, and it still started falling off over 6500. Waste of time, and i wont tell you how to do it either.
          Gary

          2006 Trailblazer SS- my DD
          2002 Camaro- built N/A LS3, Flt level 5 trans, 8.8 rear

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          • z31Z Offline
            z31Z Offline
            z31
            wrote on last edited by
            #15

            Here is the stock dyno
            http://z31.com/faqu/k&n.cone.filter.dyno.stock.na.jpg
            Disabling the fuel cut (rev limiter) is going to what?

            86 Nissan 300zx 12.43 @ 114 Top End Dragways

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            • JN210J Offline
              JN210J Offline
              JN210
              wrote on last edited by
              #16

              Well, I just wanted to see if it was a good idea or not, guess it's not so great. I read off this one forum where this guy took his out, And he showed how, I wasn't really to keen on the idea so i wanted to know what you guys thought.

              *1989 Nissan 300ZX Z31 *
              legacy image
              > DelSlow;262050 wrote:
              > I like the new JN210

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              • JoelJ Offline
                JoelJ Offline
                Joel
                wrote on last edited by
                #17

                why would you WANT to do it though, what was your main reasoning for doing it?

                no race car? becuz homeowner...

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                • K Offline
                  K Offline
                  KA-T_240
                  wrote on last edited by
                  #18

                  You can do it; but, you won't make power up there, and things are probably going to brake.

                  PM me for:
                  Sandblasting(I use glass beads)
                  Diesel repairs or performance products.

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                  • ZeroZ Offline
                    ZeroZ Offline
                    Zero
                    wrote on last edited by
                    #19

                    when they say "brake" they mean break, and what they are talking about is probably the torque converter. they can explode at high rpms, at least from what i've heard.

                    You should do other mods first, like different intake manifold, full exhaust, make the stock setup breath better, you'd notice more gains anyway.

                    Chocolate Rain ;)

                    MPI conquest

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                    • JN210J Offline
                      JN210J Offline
                      JN210
                      wrote on last edited by
                      #20

                      Well my main reasoning for doing it before was to see if i were to get a "power gain" well now i see that the idiot who disconnected his was wrong, i think i will leave it alone. I am however going to build up my VG and turn it into a HP beast, im going to turbo it and while the engine is out of the car im getting a 5-speed trans. (if i can find one cheap) and I'm also going to build up my engine while i have it sitting on the engine rack.

                      *1989 Nissan 300ZX Z31 *
                      legacy image
                      > DelSlow;262050 wrote:
                      > I like the new JN210

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                      • GrrG Offline
                        GrrG Offline
                        Grr
                        wrote on last edited by
                        #21

                        my suggestion: Take out the engine/trans, and give it to jason with a pile of cash, we'll get it in line
                        Gary

                        2006 Trailblazer SS- my DD
                        2002 Camaro- built N/A LS3, Flt level 5 trans, 8.8 rear

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                        • StangerBanger96S Offline
                          StangerBanger96S Offline
                          StangerBanger96
                          wrote on last edited by
                          #22

                          Zero;186172 wrote:
                          when they say "brake" they mean break, and what they are talking about is probably the torque converter. they can explode at high rpms, at least from what i've heard.

                          You should do other mods first, like different intake manifold, full exhaust, make the stock setup breath better, you'd notice more gains anyway.

                          Umm, the torque converter would be the least of his worries if he removed the limiter and felt he could safely hit higher than stock RPM. Valves could start floating, Piston to Valve contact could occur, anything in the heads could start breaking due to subjection to stresses it wasn't intended to see. Anything involving rotating masses would be subject to failure if he wasn't running an engine built to handle the higher RPMs.

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                          • JoelJ Offline
                            JoelJ Offline
                            Joel
                            wrote on last edited by
                            #23

                            if you want a real z car, just buy a 350, done...

                            no race car? becuz homeowner...

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                            • StangerBanger96S Offline
                              StangerBanger96S Offline
                              StangerBanger96
                              wrote on last edited by
                              #24

                              wannabe;186189 wrote:
                              if you want a real z car, just buy a 350, done...

                              Overrated waste of $$$

                              Oh and before you even say it, Stock GT vs Stock 350 is a drivers race, and there is a nice price difference between the two.

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                              • JN210J Offline
                                JN210J Offline
                                JN210
                                wrote on last edited by
                                #25

                                So i should let Jason build my Z engine?....and how much would he want to do that for me?

                                *1989 Nissan 300ZX Z31 *
                                legacy image
                                > DelSlow;262050 wrote:
                                > I like the new JN210

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                                0
                                • GrrG Offline
                                  GrrG Offline
                                  Grr
                                  wrote on last edited by
                                  #26

                                  send him a pm, should have his at sabin soon, youll have to check it out.
                                  Gary

                                  2006 Trailblazer SS- my DD
                                  2002 Camaro- built N/A LS3, Flt level 5 trans, 8.8 rear

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                                  0
                                  • z31Z Offline
                                    z31Z Offline
                                    z31
                                    wrote on last edited by
                                    #27

                                    wannabe;186189 wrote:
                                    if you want a real z car, just buy a 350, done...

                                    I think you meant 300zx not 350z

                                    86 Nissan 300zx 12.43 @ 114 Top End Dragways

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