Announcement

Collapse
No announcement yet.

Propeller shaft questions

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

    Propeller shaft questions

    Ok, guys...

    my rear bearing support for the prop shaft is completely gone, so the shaft bangs around the inside of the bearing housing (the rubber is gone, and the housing bent a bit, because the car was being treated the proper way even before I got my grubby mitts on it.)

    I got two new ones from Mazdaspeed Motorsports Development, one for the front and one for the back.

    However, I didn't actually read the manual first, and it looks like the U-joints (or bearing cups and spiders, as the manual calls them) and snap-rings are to be replaced, rather than re-used, when they're taken off.

    I was just wondering, has anyone actually re-used the U-joint parts, or even had to take apart their prop shaft? I'm not exactly sure WHY they would need replacing if they're still fine. We only ever did it on the trucks when I was growing up when they had obvious wear and were failing. But those were big sloppy 1-ton truck u-joints, not precision-made Mazda parts that use the snap-rings in varying thicknesses to determine the torque on the u-joints....

    --sarge

    #2
    I for one have not found it necessary to take one of these propshafts apart yet, so I guess I better sub this here thread cuz we all know it's just a matter of time...
    '90 AWD Protege, full GTR drivetrain swap, ~320 whp daily driver, RIP, and
    '90 AWD Protege, yet another GTR swap, Open class rallycar with a Toyota GT4 gearbox swap, thus crossing the line between hobby and mental illness. And a Brabus E55 K8, removing all doubt.
    http://www.wihandyman.com/forum/vbpi...?do=view&g=110
    http://www.cardomain.com/ride/2599486

    Comment


      #3
      I talked with the driveshaft guy over at the local machine shop and he did not think you would have a problem reusing the joint and clips. He was surprised that the driveshaft had replaceable joints. He said most of the Japanese driveshafts are "throw-aways". Apparently, you need all sorts of special fixtures to work with these style driveshafts and there is only one rebuilder in the country. They cannot even balance it here.

      So, today lesson is: Take care of your driveshaft!

      Comment


        #4
        Thanks!! I'll just swipe the whole assembly out of my blue one (B8) and put it into my grey one (BP) for now, since there's actually an autoX this sunday (at Columbus 151 speedway, you should come, Rivet).

        I think the front joint is a non-replaceable one, it's a Löbro joint, basically a constant-velocity type joint "for reduction of torque fluctuation, vibration, and noise at high rpm levels."

        The ATX cars use just a double-offset joint, with low thrust resistance, for reduction of idle vibrations. (page L-3 of the North American 4WD supplement).

        --sarge

        Comment


          #5
          hm.. mine is currently laying a pile of dirt in front of a combine tractor.... :cringe:
          1992 Ultra Blue Metallic EGT - The 'scort with no name - crap>reliable daily>rallycross prep>stage rally
          Featured in Rally Gearbox Magazine 3/1/11
          "There's a hierarchy of insanity in motor sports. Normal people think all racers are crazy. Folks who race sedans think people in open-wheel cars are nuts. People who race cars of any kind think motorcycle racers are absolutely off theirs meds. But there's one group that everyone agrees is made up of the most extreme, the most daring, and absolutely craziest people in racing - rally racers."

          Comment


            #6
            I bought the new bearings to rebuild mine but never did it cause I also read that you need to replace the c clips. I tried getting the whole rubber mount but that has been discontinued
            "See that car, in the 80's that car was deadly." Random man to his son while passing the GTX in a parking lot

            Originally posted by neuspeedescort
            the proper spelling would be "Launchabilitiness" i do believe.
            -88' Mazda 323 GTX, 1.8t, Modified Magazine May 2012
            -88' Mazda 323 GTX, caged and ready for dirt
            -93' Mazda Miata, half caged
            -09' Mercedes C63 AMG
            -87' Toyota Land Cruiser, 33's with slight lift, safari style!

            Comment


              #7
              you mean the bearing supports? They're not discontinued, they just don't have any in the USA. They were going to have to get some from japan for me, but they ended up coming from Ontario. Besides, the rear support is what was bent, and the rubber was completely torn around the circumference of the support, so the shaft just banged around inside the metal loop when the rear tires hit bumps.

              --sarge

              Comment


                #8
                jeff has a BF gtx so its probably a different part and likely discontinued
                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


                  #9
                  Originally posted by therieldeal View Post
                  jeff has a BF gtx so its probably a different part and likely discontinued
                  Ya but I'm pretty sure the driveshafts are the same. And sorry I thought u were talking about the center hanger not the rear.
                  "See that car, in the 80's that car was deadly." Random man to his son while passing the GTX in a parking lot

                  Originally posted by neuspeedescort
                  the proper spelling would be "Launchabilitiness" i do believe.
                  -88' Mazda 323 GTX, 1.8t, Modified Magazine May 2012
                  -88' Mazda 323 GTX, caged and ready for dirt
                  -93' Mazda Miata, half caged
                  -09' Mercedes C63 AMG
                  -87' Toyota Land Cruiser, 33's with slight lift, safari style!

                  Comment


                    #10
                    bf gtx driveshaft and 4wd protege driveshafs are not the same at all.
                    '90 AWD Protege, full GTR drivetrain swap, ~320 whp daily driver, RIP, and
                    '90 AWD Protege, yet another GTR swap, Open class rallycar with a Toyota GT4 gearbox swap, thus crossing the line between hobby and mental illness. And a Brabus E55 K8, removing all doubt.
                    http://www.wihandyman.com/forum/vbpi...?do=view&g=110
                    http://www.cardomain.com/ride/2599486

                    Comment


                      #11
                      BF is one piece right?
                      BG is 3.
                      No car! I soldz it. Now I have a truck. I like it, but apparently it has a hard time keeping up with a slightly modified 4WD protege with half the hp. Neat.

                      Comment


                        #12
                        Bf is a 2 piece
                        "See that car, in the 80's that car was deadly." Random man to his son while passing the GTX in a parking lot

                        Originally posted by neuspeedescort
                        the proper spelling would be "Launchabilitiness" i do believe.
                        -88' Mazda 323 GTX, 1.8t, Modified Magazine May 2012
                        -88' Mazda 323 GTX, caged and ready for dirt
                        -93' Mazda Miata, half caged
                        -09' Mercedes C63 AMG
                        -87' Toyota Land Cruiser, 33's with slight lift, safari style!

                        Comment

                        Working...
                        X