Announcement

Collapse
No announcement yet.

ZF 4HP22 Sport mode?

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

    ZF 4HP22 Sport mode?

    I have read that the ZF 4HP22 automatic gearbox can be switched between economy and sport mode. The one in my car is absolutely in economy mode, can I easily put it into sport mode?

    Richard
    Richard
    Mabel is a white 1972 Mk1½, TV8, Mo/d.

    #2
    You will need to apply 12v plus earth afaik to the two pins located on the side of gearbox.
    i will be looking to fit a switch soon

    cheers Glenn

    Comment


      #3
      I'm not aware of a 'switch' to change from economy to sport on the ex-XJ40 4HP22. Having done the conversion myself and done all the reading there was no mention anywhere. You can make it more zippy by using the lower gears. Select '2' and floor the accelerator and you will be pleasantly surprised at how it gets down the road. But you have to be ready to select '3' or 'D' as speed increases. If the 'Kick-Down' cable is adjusted correctly then flooring the accelerator in any gear will result in the 'box dropping a gear or two and improving acceleration.
      Dave
      1974 Mk2, ZF Auto, 3.45 Diff, Datsun Driveshafts. Stag owner/maintainer since 1989.

      Comment


        #4
        Originally posted by Seaking View Post
        You will need to apply 12v plus earth afaik to the two pins located on the side of gearbox.
        i will be looking to fit a switch soon

        cheers Glenn
        Are there 2 pins on the side of the gearbox?

        Comment


          #5
          "Sports mode" for the ZF 4HP22 does seem to be mentioned on various websites.

          http://e9coupe.com/forum/archive/index.php/t-10812.html














          Comment


            #6
            The first 2 links are to the same page (Paddocks). As far as I can ascertain, the Sport mode is available on the 4HP24 and requires an ECU to operate it. But I may be wrong
            Last edited by DJT; 25 June 2016, 08:11.
            Dave
            1974 Mk2, ZF Auto, 3.45 Diff, Datsun Driveshafts. Stag owner/maintainer since 1989.

            Comment


              #7
              The EH variant of this transmission has some special electronics that enabled the car to have an economy mode or a sport mode. A knob by the gearshift lever enables the driver to change the car’s personality from docile to fire-breathing.

              For its time this transmission was very advanced. It was a four-speed automatic transmission in an era when this was highly unusual. It also has a lock-up torque converter. This feature means that,…


              imag75791.jpg

              Comment


                #8
                I know about using the selector to shift gears - that's how I usually drive in town and on the faster "A" roads up into North Wales. I only use 'D' when on the motorway or a long fast bit of road that needs overdrive.
                My complaint about the ZF is that it automatically changes up too soon - way before the top of the power curve and I know from my discarded 2012 Mercedes 'C' class that sport mode makes a big difference.
                Richard
                Mabel is a white 1972 Mk1½, TV8, Mo/d.

                Comment


                  #9
                  As far as I know the ZF 4HP22 is fully mechanical/hydraulic, and does not have a sport mode. The later 4HP22EH and 4HP24EH are electronically controlled, and do feature a sport mode and even a manual mode (holding a gear regardless of engine rpm, as used in the Range Rover P38a). Maybe there were some intermediate versions without the full ECU but with an extra valve to allow sportier shifts?
                  The EH also allows torque converter lockup in 3rd as well as 4th. With a modified ECU it can even lockup in 1st and 2nd. I'm not a fan of autoboxes in general, but a torquey V8 and a ZF 4HP22EH does make for a nice drive.

                  Filip
                  Lotus Esprit Turbo SE 'Emma'
                  Triumph Stag 'Blanche' work in progress

                  Comment


                    #10
                    My ZF will hold onto gears to well over 5000rpm for max power and more if I override. Maybe your kickdown cable is not adjusted properly? The faster I want to go the more I push the accelerator, the gearbox acts accordingly.
                    My modern has sport, paddles and tiptronic, I occasionally use sport for burning of the lights or overtaking, the other modes are a waste of space for me.

                    Comment


                      #11
                      I think I need to do some work on the kickdown cable - even with the pedal on the floor it still won't change up later than about 3750rpm in automatic 'D'. Obviously it'll stay in whatever gear I choose when I use the gate, I've just driven home from work and didn't get into 4th at all.
                      I suppose I was hoping for the Economy/Sport switch so I could leave it in Economy when my wife drives!
                      Richard
                      Mabel is a white 1972 Mk1½, TV8, Mo/d.

                      Comment


                        #12
                        I believe Clive Tate was 'experimenting' with the 5 speed box (electronic 5th) and paddles for the Stag but nothing transpired as far as I know.

                        Might be worth contacting him seeing as he and Lewis pioneered the ZF for the Stag.
                        I only do what the voices in my wife’s head tell me to do!

                        Comment


                          #13
                          Originally posted by Jeff View Post
                          I believe Clive Tate was 'experimenting' with the 5 speed box (electronic 5th) and paddles for the Stag but nothing transpired as far as I know.

                          Might be worth contacting him seeing as he and Lewis pioneered the ZF for the Stag.
                          I looked into using the 5 speed box but the problem is that almost all of the ZF5 boxes have the bellhousing cast integral to the main casing. There is one variant with a bolt on bellhousing but these seem to be as rare as hen's teeth. - Alan

                          Comment


                            #14
                            Originally posted by Jeff View Post
                            I believe Clive Tate was 'experimenting' with the 5 speed box (electronic 5th) and paddles for the Stag but nothing transpired as far as I know.

                            Might be worth contacting him seeing as he and Lewis pioneered the ZF for the Stag.
                            He installed the 4-speeder in my Stag.
                            Richard
                            Mabel is a white 1972 Mk1½, TV8, Mo/d.

                            Comment


                              #15
                              Originally posted by mole42 View Post
                              He installed the 4-speeder in my Stag.
                              I assumed he did, hence my suggestion to contact him.
                              I only do what the voices in my wife’s head tell me to do!

                              Comment

                              canli bahis siteleri bahis siteleri ecebet.net
                              Chad fucks Amara Romanis ass on his top ?????????????? ???? ?????? ?????? ? ??????? fotos de hombres mostrando el pene
                              güvenilir bahis siteleri
                              Working...
                              X