So, a few observations of the FJ60 front axle in its comparison to my later date FJ55 axle. I don’t have an exhaustive or extensive knowledge of the differences, so if you already know this stuff then just bear with my ignance.
The steering arms are noticeably beefier. TRE’s bigger. Good and good. There’s a few manufacturers out there building the hi-steer arms if needed, but not necessarily necessary.
Something leaving me scratching my head. The caliper’s hard line is riveted to the backing plate, while the 55’s is bolted. Why Toyota would do this, I don’t know. Much easier to unbolt the hardline 90degree block and move the caliper out of the way and have it only attached to the flex line than to have to bend the hardline around to get out of the way of the rotor and hub if they need removed. Not sure if they came to their senses later on, but I’d like to remedy that.
Also, no need for those u-bolt hanger mounts on top, they’re getting cut to make room for the flip kits that came off the 55 axles.
Will also have to move the axle side flex line securing tabs to make room for lower, axle mounted shock mounts, instead of u-bolt plate mounted lower mounts.
The pinion angle appears to be a few degrees above horizontal when the spring perches are flat, which also makes the caster look to be about 3 - 4 degrees.