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The new FJ 73 Build

Discussion in '70-Series Tech' started by Alex gee, Jul 7, 2015.

  1. Alex gee

    Alex gee

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    Scored some perfect shaft tube to external sleeve the existing, nice 3mm wall including the internals should work out spot on,

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  2. Alex gee

    Alex gee

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    finished up the rear shaft.

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    Front locker turned up, thanks to Early Landcruiser Spares

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    front end stripped,

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    Diff Technics fitted it up an replaced the carrier bearing while they were at it,

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    Needed to get the power steering pump spinning a little faster as the steering was sluggish at idle
    Unfortunately the stock pulley on the GM pump is pressed on, so had to cut it up to get rid of it, then started to machine up a replacment,
    turned out about 25mm smaller, should hopefully make all the difference.

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    Cutting grooves,

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  3. cruiserpilot

    cruiserpilot

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    You machined your own pulley?
     
  4. Alex gee

    Alex gee

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    Locked and Loaded,

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    Stuffed a seal on the old pump when i removedthe old pulley, at it wasnt acting as i wish anyway, so i took the plunge on a trail gear 1650 PSI unit,

    Mount sorted,

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    Cut a few nipples for the reservoir,

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    Reservoir

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    Plumbed,

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    Added a little tensioner on the underside to maintain a nice firm tension,

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    Results are awesome, much smoother and has a really nice feel at speed, havent tested it on the trails yet, but feels really nice on the road.

    Even gave her a clean, with a sponge,

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  5. chappohj47

    chappohj47 Chappo Built SILVER Star

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    Nicely done mate great work
     
  6. Alex gee

    Alex gee

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    Headed out yesterday for a blast,

    Again putting to the test a handful of areas of the car, the rear drive shaft, which I'm stoked to say doesnt need balancing and turned out spot on, the front Locker and the PS rebuild,

    Everything went very well ish,
    The above mentioned bits performed amazingly, the front locker adds so much stability and pull and the steering is so nice now,

    On the last little play on some step ups i managed to snap all the hub studs on the rear drivers, on later inspection i noticed the other side had 3 snapped and 3 just about snapped,

    Limped of the trails in 4wd and got a temporary fix to get me a bit up the road before both sides let go,

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    Passenger rear 3 studs just hanging on,

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    trails fix, time for an upgrade,

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    Picked up a trailer and babied her home, literally just fitted in the trailer,

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    New screen saver for me,

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  7. Alex gee

    Alex gee

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  8. Alex gee

    Alex gee

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    Stripped out the rear hubs and started the rebuild/strengthening,

    Both sets of bearings seem in pretty good condition, will do a full clean and sus them out,

    Snapped studs and dowels removed, just.

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    power tapping the new M10 threads,



    Now ive seen a handful of axle buildups and the bit that always seems to be left alone is the cone lock washers,
    After trying to drill out the 8mm ones with no luck, i decided to machine some to suit, 8mm taper 10mm bore,

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    12.9 zinc plated hardware, 2 off 10mm dowels (mild steel rod for fit up)

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    Din 6325 hardened dowels,

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    Added some 660 Loctite to lock the dowels in and aid with line up,

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    Last edited: Jan 21, 2017
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  9. cruiserpilot

    cruiserpilot

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    So I have a question. Wouldn't the real failure be the dowels? The studs and cones hold in down, snug.
    Yet, the real strength comes from the dowel and the tight tolerance of dowel fitment. The hardness of the
    dowel would be the deal breaker, no? I mean replacing the stock bolts with gr 5 or 8 high
    shear hardness would be a good first step? In your case, high hp and tq I can see it, but
    what would you think if it was just locker and larger tires?
     
  10. Alex gee

    Alex gee

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    That's what the general rumour/ thought is but I'm not buying it,

    Without the cone washers I could see it, but the cone washers centre and bear as much if not more load that the dowels,
    I see the dowels as an initial locator and centring tool then in combination with the stud transfer load in shear,

    I think it would have been designed the other way around if they were treating the dowels as the strength, i.e 6 dowels and 2 studs holding the shaft in??

    I think with a factory ish setup good studs or even ht bolts is a smart move, my rear studs were new when the rear locker was fitted, but am unsure of the quality as the diff guys fitted them up.
    I have seen a build with 4 off 10mm dowels and keeping with the 8m studs but changed to bolts,

    I think what is most key with the design is that the studs are tight, lesson has been learnt keep an eye on the studs,
    And dont ignore a grease splatter mark on the inner of your wheel as I did, as that a sure tell tale sign that the shaft is loose,

    Tough,

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    Last edited: Jan 22, 2017
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  11. cruiserpilot

    cruiserpilot

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    Ok, hadn't really thought of the cone washers and the amount of load that they absorb with the larger
    flat surface area. They don't have an enormous torque to tighten them either. Your solution looks pretty trick, wish I had a couple of those tools.
     
  12. blazer

    blazer

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    Hey mate awesome build, I've just read through all of it. Think I have also seen your truck on insta.
    I see Menai and Diff Technics come up so I am guessing you live in the Sutherland Shire somewhere?
     
  13. Alex gee

    Alex gee

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    Yer Blazer, I'm in Botany, diff technics are a good bunch of dudes,

    Have been toying with SOA for a while, and decided I need it in my life,not looking for too much height more clearances from the rear shackle and front pivot, I know I know I just did all my shafts and so on,

    Built some hangers for the rear,

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    turned out fairly tall, but great results,

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    The hi clear rear plates worked a treat on top, even got to use the strut mount, which seemed pretty good at an initial test of the articulation,

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    pretty impressive droop and height,

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    The rear end was super simple really, just waiting on high steer arms to tackle the front, which will be much more involved as I think a rotation is definitely on the cards,
     
  14. Alex gee

    Alex gee

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    Got a start of the front SOA, flame cut the existing top supports off,

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    Roughed in, third member rotated a heap,will do a cut and turn when the hi-steer arms arrive,

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    Bloody tall now,

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    Tuned the front pack, removed 3 leafs, 5 left in the front,

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    Driverside mount, with the axle rotated so much u bolts just didnt work, welded an mating plate to the housing an 2 off m16 bolts shoul sort it, cut and shut the hi clear plate to suit,

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    Driverside easy as pie, both with reduced spring pack,

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    Ended up like this, need to remove a few from the rear but we are getting close, spring is almost flat,

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  15. Alex gee

    Alex gee

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    Been a little busy of late on all fronts,

    Rear pack tuned,

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    nice and level now,

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    Big numbers,

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    Anti wrap bar,

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    Hi-steer and creeper joint for the anti wrap,

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    Flexed up no binding or limitations,

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  16. Alex gee

    Alex gee

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    Rear shaft spacers i built, as i moved the axle backa bit further,

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    New rattle can paint job, new decals

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    Next up was the front cut and turn,

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    Second side, much better method, enede up around 10 dgrees positive, to clear the tie rod on the springs with the hi-steer arms,

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    Moved the hydro assist up to suit the new tie rod location,

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  17. Alex gee

    Alex gee

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    Have always liked the idea of a style side ute so took a chance on a 75 roof and rear screen surround,

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    And just like that i was into it,

    Exo removed,

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    Roof gone,

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    roughed up

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    shortend tie rods to suit new arms,

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    No turning back now, new recess cut,

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    Rear surround support, will pick up the firewall too,

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    New internal cage, beginnings of,

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    Last edited: Apr 9, 2017
  18. divemedic

    divemedic

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    Holy dog doodoo this is glorious. Do it with a wagon next please!!
     
  19. Alex gee

    Alex gee

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    Things are moving round here,

    Rear support for the wheel carrier/exo

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    a thing of beauty i must say,

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    A-pillar to frame tie in, with the body sandwiched between,

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    re-built the rear sections,

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    main exo hoop gussets and frame tie in

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    rear exo cab cage and so on

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    topless

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    cabcage to rear exo tie ins

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    Just a little stoked

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  20. ozcrusier

    ozcrusier

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    Wow you don't muck around Alex.
     
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