Announcement

Collapse
No announcement yet.

Differential adjustment

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

  • Differential adjustment

    Hello,

    I've installed a JUN lightened flywheel on my S13 CA18DET and now my differential makes grinding noise on decelleration.

    Can you tell me how to adjust this ?
    Should I have to adjust:
    - the pinion position in the diff (add/remove shims) ?
    - the ring position in the diff ?
    - both positions ?

    or only the backslash ?

    (It's the first time I have to adjust a differential)

    Thanks,
    Sorry my english is bad.

    Welcometohell38

  • #2
    It's probably just the harmonics of the drivetrain. Every 240 I've owned with an aftermarket clutch makes the same noise, especially in 4th gear (1:1).

    There's nothing to adjust in the diff that would fix that.

    Comment


    • #3
      Yep, drivetrain harmonics.
      '18 Chevrolet Volt - Electric fun hatch for DD duty!


      DefSport Koni Sleeve and Spring Perch Buy!!!
      http://www.nissanroadracing.com/showthread.php?t=5902

      Comment


      • #4
        Hum okay! Thanks guys!

        Anyway, is it possible to decrease/stop these vibrations?

        4th gear is horrible on deceleration....
        Sorry my english is bad.

        Welcometohell38

        Comment


        • #5
          Yes - use a stock clutch disk.
          '18 Chevrolet Volt - Electric fun hatch for DD duty!


          DefSport Koni Sleeve and Spring Perch Buy!!!
          http://www.nissanroadracing.com/showthread.php?t=5902

          Comment


          • #6
            Welcome to the joy of owning and aftermarket clutch on a 240sx.

            I have asked the same question 5 years ago...

            Basically the clutch springs are too stiff and it causes the diff to resonate when unloaded.

            My Blog

            My Racing video's

            Comment


            • #7
              #racecar, bruh.

              Yeah it's annoying, made even more annoying when you start putting metal bushings everywhere.

              Comment


              • #8
                When you get to comically low drivetrain inertia, it'll make a racket on Accel at like 2-2.5 k rpm in 5th as well. More like a vibrating knocking sound on each power pulse.
                '18 Chevrolet Volt - Electric fun hatch for DD duty!


                DefSport Koni Sleeve and Spring Perch Buy!!!
                http://www.nissanroadracing.com/showthread.php?t=5902

                Comment


                • #9
                  This is why you keep rubber/urethane mounts in the drivetrain. The solid trans and diff mounts were WAY noisier than solid engine mounts. I went back to urethane mounts everywhere and the car is much nicer to drive.
                  Originally posted by SoSideways
                  I don't care what color they are as long as they are LONG AND HARD.
                  '04 G35 Sedan 6MT- The DD
                  '96 240SX- The Track Toy

                  Comment

                  Working...
                  X