| The ATB style
differential is one of the best LSD's available. It powers both drive
wheels under all conditions. With an ordinary open differential, standard
on most cars, a lot of horse power is wasted during wheelspin under
acceleration. This happens because the open differential shifts power to
the wheel with less grip (along the path of least resistance).
The ATB
differential, however, does just the opposite. It senses which wheel has
the better grip, and biases the power to that wheel. It does this smoothly
and constantly, and without ever completely removing power from the other
wheel. In (drag-race) straight-line acceleration runs, this results in a
close to ideal 50/50 power split to both drive wheels, resulting in
essentially twice the grip of an ordinary open differential.
During
cornering, while accelerating out of a turn, the ATB differential biases
power to the outside wheel, reducing inside-wheel spin. This allows the
driver to begin accelerating earlier, exiting the corner at a higher
speed. The diff also controls loss of traction when the front wheels are
on slippery surfaces such as mud, snow and ice, providing the appropriate
biased traction needed to overcome these adverse conditions.
The ATB
differential provides constant and infinitely variable drive. Power is
transferred automatically without the use of normal friction pads or
plates seen in other limited-slip designs. It is extremely strong and
durable and since it is gear operated, it has no plates or clutches that
can wear out and need costly replacement.
The
differential unique design offers maximum traction, improves handling and
steering, and puts the power where it is needed most. It is great for
street driving or racing. Because it behaves like an open differential
during ordinary driving, you will have trouble telling it's there until
pushing the car to its limits.
![]()
Frequently Asked Questions
Q. How
much power can the differential handle?
A. The internal spiral
gears and components are identical to those fitted into the GT3 Porsche
model which can handle in excess of 350hp.
Q. What
diff housing does the center fit?
A. The differential center will
bolt into the Nissan/Datsun R180 housing (using the existing ring and
pinion gear). It accepts the bolt in style stub axles. (Call for
information on the cir-clip snap in stub axles). The R180 differential can
be found in Datsun 240Ks, early Skylines, Z cars, the front of 720 utes,
and some others.
Q. Will
the R180 diff bolt into a Datsun 1600 with out any mods?
A. Yes,
but you must use the R180 half shafts as the standard halfshafts on a 1600
(R160 diff) will not fit an R180 diff.
Q. Can
I bolt the center in myself?
A. The diff center will bolt in but
the diff will need to be set up by a professional as the crown wheel to
pinion gear preload needs to be set up precisely. We also recommend
replacing all the bearings while the diff is apart. Fitment of the diff
center and alignment by a diff specialist should cost around $150-200 not
including new bearings.
Q. What
oil should I use?
A. We recommend Penzoil LSD 90 grade
oil.
Q. How
does the diff work?
A. The diff is reasonably complicated to
explain but is very simple in the way it works. The center is made up up a
series of spiral gears that are cut in opposite directions. The angle on
the gears allows the diff to load up and transfer power to the opposite
wheel. The gears work against one and other automatically torque biasing
the power to both wheels.
Q. Will it
wear or need any maintenance?
A. Because the diff uses gears
instead of friction pads or plates, the diff has virtually no wear. As
long as the diff is setup correctly and the fluid level maintained the
diff center should not need any maintaince at all.
NOTE: Center fits R180 ring gear with the 115mm carrier. 110mm
carrier ring gears are common in earlier diffs. Later model diffs are
recognisable by a large K cast in the top of the diff housing but its best
to check the carrier size (by removing the back plate and measuring with
calipers) to confirm this.
Center accepts bolt in style stub axle half shafts only. For
circlip snap in style please call.
$850 US dollars
$1450 AUS
dollars +GST
Amax Engineering
Factory 6/19
Edlermaier
St
Bayswater Victoria
Phone Max: 0418 485 460
[EMAIL PROTECTED] | 