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  • Piston pin bushings

    I'm rolling over FSM stuff trying to figure this one out.

    Most of us know that the Z32 pistons used a slightly bigger piston pin.. the 'common' fix to this is to use z32 rods.

    My vg33, as per the FSM, has the same size bushing/pin as the 88t w-series.

    New pin bushings for the rods are ~6$ each via nissanparts.cc , a little machine-shop work, and voila, my rods will now work with forged pistons made for a z32.

    The downside. The FSM's only list the inner diameters of these parts. I cannot find the sizes of the holes without the bushings installed.. which is what will tell me if this will work or not.

    Anybody have a set of both and willing to look/measure if the outer diameter of the pin bushings are the same?

    I may have to buy one of each from the dealership and mic it out.
    vg33et -blew some chunks outta it, then gave it all away.
    2009 370z touring/nav/sports

  • #2
    Not what you are asking for, but I have a set of z32 rods with pistons
    I will part with for a reasonable offer.

    Have you found some z32 pistons that are 91.5mm?
    Mind passing on the info?
    imagination is a virtue

    Comment


    • #3
      nope, They'll be forged and probably from brc.. and 91.5mm is a little small for my tastes

      I'll keep that in mind if I can't rebush my rods, and nobodies willing to give me a pin that's the right size.

      mind knocking a piston off one and measuring the bushing outer diameter?

      mind sharing what you've done with your 33?
      vg33et -blew some chunks outta it, then gave it all away.
      2009 370z touring/nav/sports

      Comment


      • #4
        grahfz wrote: nope, They'll be forged and probably from brc.. and 91.5mm is a little small for my tastes
        Ahhh, so your just after the larger pin dia.
        Thought about cryo treating the ones you've got?

        grahfz wrote: I'll keep that in mind if I can't rebush my rods, and nobodies willing to give me a pin that's the right size.
        $50 + shipping and they are yours.

        grahfz wrote:
        mind knocking a piston off one and measuring the bushing outer diameter?
        I'll see what I can do. I don't have a dial calliper, but I have freinds that do.

        grahfz wrote:
        mind sharing what you've done with your 33?
        gt30r
        ported/ portmatched heads and manifolds
        pathfinder upper manifold
        440/420 270/262 cams and springs
        Tial 38/40 hybrid
        relocated motor mount (off the frame rail to make a strait shot to turbo)
        polly motor mounts made from extra TR bushings
        meth injection
        more to come soon
        imagination is a virtue

        Comment


        • #5
          sounds pretty potent ;D
          vg33et -blew some chunks outta it, then gave it all away.
          2009 370z touring/nav/sports

          Comment


          • #6
            [quote]craZed wrote:
            Originally posted by grahfz
            nope, They'll be forged and probably from brc.. and 91.5mm is a little small for my tastes
            Ahhh, so your just after the larger pin dia.
            Though about cryo treating the ones you've got?

            "grahfz' wrote: I'll keep that in mind if I can't rebush my rods, and nobodies willing to give me a pin that's the right size.
            $50 + shipping and they are yours.

            grahfz wrote:
            mind knocking a piston off one and measuring the bushing outer diameter?
            I'll see what I can do. I don't have a dial calliper, but I have freinds that do.

            grahfz wrote:
            Originally posted by grahfz
            mind sharing what you've done with your 33?
            gt30r
            ported/ portmatched heads and manifolds
            pathfinder upper manifold
            440/420 270/262 cams and springs
            Tial 38/40 hybrid
            relocated motor mount (off the frame rail to make a strait shot to turbo)
            polly motor mounts made from extra TR bushings
            meth injection
            more to come soon
            Consider that a done deal on Friday. Shipping to 30022 if you want to figure that out in the mean-time. Take Paypal? lets move this to airdamien gmail

            not specifically after the larger pin diameter. Just looking down my road at the possible complications (if they just want to cut me a larger z32 piston) and solutions.

            I'm not concerned about the rods. I'll toss some ARP hardware on them and call them good. I've never seen anybody toss a stock rod from anything other than bearing failures.
            vg33et -blew some chunks outta it, then gave it all away.
            2009 370z touring/nav/sports

            Comment


            • #7
              grahfz wrote: nope, They'll be forged and probably from brc.. and 91.5mm is a little small for my tastes
              If you are getting custom pistons made then they should come with the correct pins. You should call Atomic Speedware and talk to nick. He will give you the same 2618 aluminum that BRC uses for cheaper. Also they come with Total Seal rings, pins, and spiral lock rings.
              KILL HADJI

              Comment


              • #8
                I have some TT pistons and some pistons out of a Maxima with a VG30E. The pins look quite similar but I can measure them, if that'll work for you.

                Here's a bunch of pictures of the pistons/rods that I posted on a Maxima site.

                Left to right: 84-86 VG30ET, 89-94 Maxima VG30E, 90-96 300ZX VG30DETT





                Left: 84-86 300ZX VG30ET
                Right: 89-94 Maxima VG30E



                Left: 89-94 Maxima VG30E
                Right: 90-96 300ZX VG30DETT







                In these pictures the angles screw up the way the rods look. The Maxima rod looks the thinnest of all of them however it is the same thickness as the VG30ET rod (left).



                Left: 84-86 300ZX VG30ET
                Right: 89-94 Maxima VG30E



                Left: 89-94 Maxima VG30E
                Right: 90-96 300ZX VG30DETT



                Left to right: Z32, Maxima, Z31

                (Yes... that piston from the VG30ET is scored all over. There is even a small chunk missing out of the side of it. Whoever messed with that engine before we got the car had no idea what they were doing... that thing was in such bad condition that I'm having to put in a totally different engine. I'm thinking they tried turning up the boost without adding any fuel and/or an aftercoole. There's a manual boost control in the car... yes in the car... without any supporting mods, so I'm guessing they definitely had no idea what they were doing.)





                Higher resolution:
                http://www.machzracing.com/pictures/vginternals1.jpg
                http://www.machzracing.com/pictures/vginternals2.jpg
                http://www.machzracing.com/pictures/vginternals3.jpg
                http://www.machzracing.com/pictures/vginternals4.jpg
                http://www.machzracing.com/pictures/vginternals5.jpg
                http://www.machzracing.com/pictures/vginternals6.jpg
                http://www.machzracing.com/pictures/vginternals7.jpg
                http://www.machzracing.com/pictures/vginternals8.jpg
                http://www.machzracing.com/pictures/vginternals9.jpg
                http://www.machzracing.com/pictures/vginternals10.jpg
                http://www.machzracing.com/pictures/vginternals11.jpg

                Comment


                • #9
                  Alex86na2t wrote: You should call Atomic Speedware and talk to nick. He will give you the same 2618 aluminum that BRC uses for cheaper. Also they come with Total Seal rings, pins, and spiral lock rings.
                  I second that motion. Arias pistons are getting a much bigger following recently. With BRC's failure to even get the correct sized forgings for our bore size or a vg33 (a la Kevin's failed BRC group buy), I'm not sure they would be able to help you out anyway. Who knows, I may have one of the last sets of VG30 pistons BRC made. They should be about the same price either way, so I would go with arias.

                  Comment


                  • #10
                    hrmm, looks like they added more meat around the big-end after the vg30et.
                    really good info there.
                    If we can get the outside diameter of the pin bushings... I'll order one from a dett and a 33, to see if I'll have problems with my rods.
                    I'm going to see what they say about making them to fit my rods already, but I like a little cheap insurance ;D

                    So, BRC's having problems?

                    Arias then Atomic.. I'll see who wants to actually deal with my little piston project.

                    Thanks!
                    vg33et -blew some chunks outta it, then gave it all away.
                    2009 370z touring/nav/sports

                    Comment


                    • #11
                      grahfz wrote:

                      Arias then Atomic.. I'll see who wants to actually deal with my little piston project.

                      Thanks!
                      Atomic pistons are arias pistons. Nick Arias 3 runs atomic and (he is the son.) Also they are about $300 cheaper than ordering directly from arias.
                      KILL HADJI

                      Comment

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