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We
knew ahead of time that building a sporty suspension
for the Nissan Altima project sedan would not
be an easy task. The original Nissan Altima suspension
came with soft springs, an inadequate sway bar
and no strut brace(s). Combined with average struts,
this produced a very soft ride and non-responsive
cornering, which overall amounts to a rather average,
if not below-par, suspension system. The original
struts are not capable of recovering from absorption
of road stress under hard cornering situations.
This results in severe body roll which alters
the steering significantly. By far, the Nissan
Altima suspension was not designed for high-performance
applications. In fact, it is a very generic suspension
setup that Nissan used across a wide spectrum
of their models. It is designed to be quiet, soft
and provides the driver with adequate handling
ability under normal driving situations.
Building
the sport suspension for a 1993-1997 Nissan Altima
presented a few initial problems. The very process
is hampered by the lack of pre-existing coilover
systems that are designed for both daily driving
and the extreme stress of autocross or drag racing.
Before assembling the ultimate Altima suspension,
we listed the characteristics that we desired.
Among those were fully adjustable height settings,
a strong strut that can handle the stress, solid
springs, adjustable camber, extreme stability
and the solid feel of control.
To
start transforming this family sedan into a road
ready machine we first decided to stabilize the
chassis. In order to reduce body roll, we replaced
the thin original sway bar with a thicker Suspension
Techniques (Stillen) rear sway bar. An upgraded
rear sway bar produced significant positive changes
during hard cornering by reducing chassis flex.
To upgrade the front wheel portion of the suspension,
we installed a heavy duty "Nismoman"
A-Arm brace along with a rock-solid Stillen Front
Strut Tower Brace. While working on the front
portion of the suspension, we noticed that the
factory bushings were not only worn out, but were
also made out of low quality composite material.
To upgrade the OEM front sway bar bushings, we
called upon Whiteline. Whiteline provided our
project Nissan Altima with solid, high quality
bushings.
We
were rather satisfied with the improved stability
of our project Altima after the aforementioned
upgrades. What used to be an unresponsive sedan
with extreme body roll, was now a firm and stable
machine that was ready to handle a road course.
However, our quest to build the ultimate suspension
did not end here.
To
give our project Altima an aggressive appearance
and further improve on the handling, we disassembled
the OEM spring and strut combination and replaced
the springs with fully adjustable Ground Control
sleeves which were combined with 325 in/lbs front
springs and 350 in/lbs rear springs by Eibach.
The soft OEM struts were replaced by strong Tokico
struts, which was a great complement to the adjustable
suspension. We had to completely remove the spring
perches from the Tokico struts since we were using
adjustable sleeves to control the "drop"
of the vehicle.
To
bring our new suspension within specifications,
we installed adjustable Stillen (by Cusco) front
camber plates (-2.5 degrees) and an adjustable
camber bolt in the rear supplied by the professionals
at Eibach (-1 degrees).
To
glue the vehicle to the ground we replaced the
original 15" factory wheels with larger 18"
Konig wheels, which were wrapped in Yokohama Parada
215/40/18 tires. The new wheels, along with the
upgraded suspension, not only gave our project
Nissan Altima an aggressive look, but more importantly,
produced outstanding handling and stability. The
vehicle was now responsive during cornering and
provided great feedback via the solid high performance
suspension.
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