2.3.4 Extended shackles
Installing longer shackles is one of the easiest modifications that
can be made to a Samurai. By simply replacing the stock shackles with
a set of longer, stronger ones, up to 2 inches of lift - enough for
225/75 tires - can be had at minimal cost and complication. A pair of
longer shackles can also be used front or rear to level out an uneven
front/rear suspension height. A little increase in articulation and
a slightly smoother ride come as a result of a shackle lift, due to
more distance between the axle and the bumpstops. The tradeoffs to using
longer shackles are the fact that like a shackle reversal, the ends
of the springs are pushed down lower to the ground, hurting the approach
and departure angles. Also, a little increase in wander in the steering
can be felt, since the front axle gets rolled forward, reducing the
caster. Due to the slight change in suspension height, the steering
geometry is changed enough to cause a minor amount of bump steer. Longer
shackles also allow for the springs to have more leverage against the
shackle bushings, adding a bit more "slop" to the handling.
Oftentimes this is imperceptible, but the use of polyurethane bushings
to replace the factory rubber bushings can help minize this. It is for
these reasons that shackles more than 4 inches longer than stock are
strongly discouraged. For a small amount of lift, though, longer shackles
are a highly rated option, especially for a tight budget. A full set
of shackles can be easily built or purchased for under $150.
