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  • auto trans

    Anyone running higher than stock horse power on a stock auto-trans with good results or are you using a high stall converter with a modified auto trans? How did you modify it and where did you get the parts?
    Black 1986 300zx Turbo coupe (Chuki)
    http://z31performance.com/showthread...86-Turbo-Coupe
    ----------------------------------------------------------------------------------------------------------------
    Pewter 1986 300zx N/A 2 Turbo 2+2 (Chuki)
    http://z31performance.com/showthread...9;s-1986-300zx

  • #2
    Tehpopa's 86T is running a stock turbo auto transmission with the exception of tractor hydraulic fluid instead of ATF. It shifts fine, and seems to be holding up alright but I don't like to run other people's cars in boost for very long so who knows.

    3" turbo back
    Cone filter
    UR underdrive pulley
    Boost at 11PSI
    est ~210rwhp through the auto

    For upgrades there are a few, but levelten has both torque converter "service" and upgraded "billet" units, as well as modified valve bodies and full transmission service to make your trans handle a claimed 400+hp. You can do the valve body modifications yourself if you can find it on z31.com.

    http://www.levelten.com/store/import/pa ... nissan.htm

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    • #3
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      • #4
        Bernardd wrote: I have the 3n71b jatco behind my l28et. I've dyno'd at 300hp and run mid 12's. The trans has rebuilt as per a spec sheet I was sent by KEAS in australia. I was also lucky to find an unused b&m shift kit made for the jatcos' in 1981. So far it works perfectly. The torque converter flashes to 2800 before it grabs. And lastly I use a mixed in a bit of tractor fluid (2 liters) to tighten the converter up a bit. If you want the rebuild specs let me know and i'll send them over.
        cool post it, the more good info on here the better.... and deleting isn't a concern here at least

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        • #5
          I found a lot of good 4n71b parts at bulkparts.com
          Black 1986 300zx Turbo coupe (Chuki)
          http://z31performance.com/showthread...86-Turbo-Coupe
          ----------------------------------------------------------------------------------------------------------------
          Pewter 1986 300zx N/A 2 Turbo 2+2 (Chuki)
          http://z31performance.com/showthread...9;s-1986-300zx

          Comment


          • #6
            Just to add to the thread... 3n71/4n71 buildup information:

            http://www.redz31.com/forum/viewtopic.php?t=889

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            • #7
              I found a lot of good brand 3n71b/4n71b parts at bulkpart.com
              Black 1986 300zx Turbo coupe (Chuki)
              http://z31performance.com/showthread...86-Turbo-Coupe
              ----------------------------------------------------------------------------------------------------------------
              Pewter 1986 300zx N/A 2 Turbo 2+2 (Chuki)
              http://z31performance.com/showthread...9;s-1986-300zx

              Comment

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