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    G-Series Differential Services

    With the MFactory group buy finally coming to a close, a member here suggested that I offer some services to help people get their diffs installed. Not everyone has a drill press and/or a shop press, but luckily I have accumulated both.

    $30 - Drill the rivets out and remove the ring gear from your stock diff.

    $10 - Install the ring gear onto your diff and torque to the proper specs, w/ loctite blue.

    $20 - Install the carrier bearings and speedometer gear. I can source the speedometer gear for you at additional cost.

    PRICES DO NOT INCLUDE RETURN SHIPPING

    For now, you can PM me for pricing as I haven't worked it out 100% yet. I'll add pricing to this thread once I've figured it out. I'm not trying to get rich here; I'll be covering my time based on my day job wage, plus packing/return shipping cost (UPS or USPS, your choice). Payments will be by paypal or money order.

    I also have a PDF copy of the Mazda transmission rebuild manual, which I can email to you. This is free obviously, just PM me with your email address. It covers disassembly, reassembly, clearances, torque specs, etc.

    Thanks,
    -Jon
    Last edited by therieldeal; 06-18-2009, 12:59 PM.
    Escort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
    ... The first FWD BG with a Toyota E153 transmission conversion in the USA!
    Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts

    #2
    Good idea! If Jon doesn't mind, I could do the same for guys that are closer to me to save on shipping costs - though Jon and I are both on the east coast, so it might not be much.

    I'll go with whatever price Jon comes up with for the labor.

    --Ferdi
    If you can't differentiate between brake and break, you should go back to school
    -----
    Miscellaneous Pics of Turbo Protege Build
    Big Front Brake Install using Wilwood Calipers
    Factory Service Manuals and Familia Brochures - PDF

    Comment


      #3
      May I add for anyone's that is drilling the rivets out to centre punch the rivet and don't be using a drill bit that's bigger than the hole... start small cause you can always go bigger. Last thing you want to do is to hit the ring gear...

      Also I'd go with red Loctite over blue... something about bolts floating around in my tranny that doesn't make good sounds.

      JoN - Automotive Machinist Journeyman/Refrigeration Mechanic Journeyman
      Member of MX-3.com
      1996 Mazda MX-3 RS - Creek Blue Mica
      1993 Mazda MX-3 GS SE - Raspberry... RIP


      Racing BP (Project "Blue" Marlin)... Twin Scroll GT3071R, breaking 30psi at the moment!

      "Do it ONCE, do it RIGHT!"

      Comment


        #4
        the problem with loctite red is that you need to heat the hell out of it if you ever want to take it apart again. i have NEVER had anything come apart with loctite blue on it, have you? there are plenty of bolts inside the tranny that don't use any loctite at all.

        i center punch the rivets and drill from the differential flange side with bits of increasing size. the final bit is .2 mm smaller than the hole in the ring gear, and its marked off with tape so that i dont actually drill down to the ring gear. then i pop the ring gear off and press out what's left of the rivets.
        Escort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
        ... The first FWD BG with a Toyota E153 transmission conversion in the USA!
        Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts

        Comment


          #5
          prices posted
          Escort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
          ... The first FWD BG with a Toyota E153 transmission conversion in the USA!
          Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts

          Comment


            #6
            Hi all,

            I bought a diff and have a couple of questions.

            1. Has anyone tried clamping to a rotry table and milling the rivets off?

            2. Besides the OEM carrier bearings, is there a source for good qualiy bearings?

            As for the locktite, a service removable grade is the way to go, nothing is forever! IMHO
            Ohhhh Yeaaahhhh

            '03 Mazdaspeed #23
            '93 BMW 318 i something (euro)
            other fast cars in the past
            '67 camaro
            '68 camaro rs
            '67 mini cooper s
            '91 escort gt

            Automatics are for people who can't drive!

            Comment


              #7
              1. not that i know of, but i'm sure it would work just fine. the drill press has worked pretty well for me, i built a little jig to support the diff and keep everything square while i drill.

              2. the OEM bearings are NSK brand, made in japan if that helps. i'm sure any high quality bearing would be fine like an SKF or NTN. the bearing part number is 32008X.

              i completely agree about the loctite!
              Escort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
              ... The first FWD BG with a Toyota E153 transmission conversion in the USA!
              Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts

              Comment


                #8
                is it hard to remove the diff from the trans?

                Comment


                  #9
                  Originally posted by smoke187 View Post
                  is it hard to remove the diff from the trans?
                  well, it's not hard once you know exactly what to take apart first. I was ok taking it apart, and stubbled my way putting it back together cuz i took so long in between.

                  if there is anybody that is even questioning themselves and are unsure if they can do this, i would highly recommend considering this option. if i had this option, i would have done it. it was a total PITA taking my ring gear off. after several hours of drilling and not having the right size bits, and then have to beat the heads off the rivets, i then had to track someone down that had a air hammer, ruined a few bits, and after about an hour of that, i finally had the ring gear off and still had to put it back together.
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                  Comment


                    #10
                    thats generally how it goes the first time... lol

                    if anyone wants to avoid that situation, just shoot me a PM...

                    smoke - removing the diff from the trans is the easy part
                    Escort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
                    ... The first FWD BG with a Toyota E153 transmission conversion in the USA!
                    Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts

                    Comment


                      #11
                      Ok, so, lets talk about pressing the bearings and races in the housing and the diff shafts. In looking through the Mazda technical data Jon was kind enough to send me there is reference to a selector tool in order to set the bearing preload...I have never had to get this deep in a tranny before. I am confident I can do it I just want to be sure I do it right.
                      Ohhhh Yeaaahhhh

                      '03 Mazdaspeed #23
                      '93 BMW 318 i something (euro)
                      other fast cars in the past
                      '67 camaro
                      '68 camaro rs
                      '67 mini cooper s
                      '91 escort gt

                      Automatics are for people who can't drive!

                      Comment


                        #12
                        Theoretically with high quality bearings (like the ones MFactory is supplying) you shouldn't really have to touch the preload as long as the original shims are in good condition. Simply reuse all the stock shims in their original locations along with the new races/bearings. A small brass drift works best for removing the diff races from the case. tap lightly on each side of the race (through the access notches) until it comes out. Usually they will slide back in (at least partially) by hand, and a wood block or brass drift can be used to go the rest of the way. Again be careful to go a little at a time to keep it going straight in.

                        Sometimes the shims can become worn if the transmission has very high miles and the races have spun in the housing. This is most common on the shaft bearings, i've never seen it happen on the diff races. If they appear worn i would measure the thickness with a micrometer and purchase the next logical size up.

                        The only other exception would be if you are mixing and matching bellhousings and rear housings from different transmissions. I don't advise doing this, as you will need to set the preload from scratch which is very difficult to do properly without the special tools. You basically have to guesstimate the required thickness with a feeler gauge, buy several shims, and try them all until the preload is correct.

                        does that help at all?
                        Escort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
                        ... The first FWD BG with a Toyota E153 transmission conversion in the USA!
                        Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts

                        Comment


                          #13
                          [QUOTE=therieldeal;564699]Theoretically with high quality bearings (like the ones MFactory is supplying) you shouldn't really have to touch the preload as long as the original shims are in good condition.

                          I got my bearings from Mazda ...but I am going to assume that these too are of good quality!

                          Simply reuse all the stock shims in their original locations along with the new races/bearings. <snip>
                          Again be careful to go a little at a time to keep it going straight in.

                          yeah, being a retired (read, no jobs that pay) machinist I sort have this part down.

                          Sometimes the shims can become worn if the transmission has very high miles and the races have spun in the housing. This is most common on the shaft bearings,

                          It's looking like one of my shaft bearing races did this, Ill know better once I get it all cleaned up and ready to reassemble

                          If they appear worn i would measure the thickness with a micrometer and purchase the next logical size up.

                          Shims or bearing/race?

                          The only other exception would be if you are mixing and matching

                          Naaaa, that just sounds like a bad idea.

                          does that help at all?[/QUOTE]

                          Most certainly does...thanks
                          Ohhhh Yeaaahhhh

                          '03 Mazdaspeed #23
                          '93 BMW 318 i something (euro)
                          other fast cars in the past
                          '67 camaro
                          '68 camaro rs
                          '67 mini cooper s
                          '91 escort gt

                          Automatics are for people who can't drive!

                          Comment


                            #14
                            [QUOTE=xbelfast;564717]
                            Originally posted by therieldeal View Post
                            If they appear worn i would measure the thickness with a micrometer and purchase the next logical size up.

                            Shims or bearing/race?
                            here i was talking about the shims, one of the transmissions i pulled apart (~190K miles) had some measurable wear on the primary and secondary shaft shims. i *think* the FSM i sent you lists the different shim sizes and part numbers, so you should be able to tell from that if anything has worn significantly.
                            Escort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
                            ... The first FWD BG with a Toyota E153 transmission conversion in the USA!
                            Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts

                            Comment


                              #15
                              im sure i can do the removal and install of the diff myself i just need the tools to take it apart and put it back together

                              Comment

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