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Delivery
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All
above prices do not include shipping and duty, which
will be billed directly to the customer.
Call
for details.
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Ratios
for Reference :
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5
Speed Stock - OEM
1st
- 3.454
2nd - 1.947
3rd - 1.366
4th - 0.972
5th - 0.738
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5
Speed PPG Street
Performance-Race
1st -
3.18
2nd - 1.87
3rd - 1.32
4th - 0.95
5th - 0.738 std. OEM
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6
Speed Stock - OEM
1st:
3.636
2nd: 2.375
3rd: 1.761
4th:1.346
5th:0.971
6th: 0.756
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6
Speed PPG Street
Performance-Race
1st:
3.636
2nd: 2.375
3rd: 1.761
4th:1.346
5th:1.062
6th: 0.842
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WHY
CHOOSE PPG?
The
PPG Tooth Profile
PPG pride themselves on their design, research
and development of custom built, high performance, close ratio
gear sets, to the highest standard.
The
process of gear design is detailed, technical and precise,
starting with CAD drawings developed in our state of the art
“control room” using the latest software available.
These blueprints ensure specifications including tooth count,
desired gear ratio and basics like “internal gearbox
dimensions”, for your project are incorporated, to produce
the strongest, lowest wearing and efficient, tooth profile.
The
custom tooth profile drawings are only the first stage of
the process. The next step in the production of a PPG
is creating unique tools to cut the gear
set to exact design. These tools are high-tech, modern and
of the highest quality to ensure each gear set is produced
with ultimate precision.
A
steel billet (a solid piece of pure steel) is then carved,
sliced and shaped with absolute precision by our
automated, robotic machinery to accurately mirror the design
blueprints. Whether helically or straight cut our gear sets
are meticulously created with strength and performance always
our goal.
To
compliment the unique tooth profile and further enhance strength
and reliability PPG manufacture a
“five dog” design, dog engagement gear set using
a distinctive radiused, lightweight dog ring. The PPG
dog gear design promotes smooth and rapid gear selection through
larger dog engagement pattern, reducing wear with radiused
teeth.
Competitor
Tooth Profiles
Even
some of our most recognised competitor’s, with long term,
highly regarded reputations within the high performance field,
are still utilising agricultural, technically-basic and inferior
design and cutting methods. Our competitors are manufacturing
the same product they have for decades, primarily to avoid
re-developing existing machinery, tooling and product designs.
These “old school” models are susceptible to wear,
pitting and entire tooth breakage.
The
Advanced PPG Heat Treating Process
The
last phase of the gear set production is heat treatment (case
hardening). This is not a new approach to strengthening metal
componentry and most clientele of the automotive industry
would be familiar with the process of parts being dipped into
a heat treating salt bath containing various elements but
most importantly carbon.
The “Controlled Atmosphere” heat treatment process
PPG apply is a more precise and refined
method from the original salt bath heat treating. Using a
computer controlled atmosphere (furnace) where carbon and
other elements are monitored and maintained at optimum levels
via highly advanced software and sensors, ensures accurate
and efficient heat treating, consistently producing a well
hardened and strengthened product for PPG customers.
High
temperature levels are produced to attract and infuse carbon
onto the surface of the product, penetrating to calculated
design depths to harden it. “Rockwell” tests (an
international standard of hardness testing) are performed
at regular intervals with sacrificial components as a form
of ongoing quality control.
Competitor
Heat Treating Process
The
basic heat treating technique is at times “hit and miss”
given element levels fluctuate and more specifically carbon
content is “guestimated” producing inconsistencies
with this practice. Salt Bath techniques were developed pre
the 1950’s and have not evolved since then.
The
PPG “Product in Stock” Philosophy
When
you are involved in motor sport, you want to know that replacement
parts for your race car or team are only as far away as the
nearest phone and that includes gear sets. PPG produce reliable, high performance, tough gearbox
for the motor sport arena, consistently coping with big horsepower,
hard driving and extreme loads.
So,
when your competitor brand gearbox fails,we have a large range
of product in stock to support race and rally clients. There
is zero lead time on a considerable collection of our product
list because. it’s on the shelf.
Which
set do I need when ordering?
1994-current
5 speed WRX Owners take note.
Subaru
Gearboxes have an unusual variation in the manufacture of
1st and 2nd gear and 3rd and 4th gear on a different year
that can cause problems when fitting gearsets. Its therefore
very inportant you know what year gearbox you have in your
car. This has become difficult at times as most Subaru owners
are now buying a PPG gearset after breaking a few standard
gearboxes and they may have replaced the gearbox with an entire
gearbox from a different year model vehicle.
Please
note the information below before ordering.
MY
94,95,96 up to 6/97 Gearboxes have single synchro 1st and
2nd gear up to 7/95
Single synchro 1st , Double synchro 2nd on 8/95 on (must update
to 8/95 double synchro 2nd gear !)
Single synchro 3rd and 4th gear to 7/95
MY
97,98 (7/97 to 7/98) Gearboxes have single synchro 1st , double
on 2nd, 3rd and single on 4th.
PPG 1-2 sets are a straight C/over . The 3 and 4th sets require
a 4th gear synchro ring to be used on 3rd gear which we convert
to single synchro.
MY99
on (8/98 on) have singls synchro 1st, double synchro 2nd,
double on 3rd and single on 4th. 3rd and 4th synchro's are
different to the pre-98 boxes and cant be used. Our 1-2 sets
are a straight fit , but same as the pre-98 sets we now convert
3rd to a single synchro and it must use a 4th gear synchro
ring of post '98 type.
Try
to let us know what year model your gearbox is and we can
supply the right part 1st time with everything you need to
fit the set straight into the casing without modifications.
Straight
Cut Gearset
The
Straight Cut gear design incorporating our PPG distinctive
tooth profile provides even more strength than our already
ultra reliable helically cut gearsets. One of our more popular
items ... the Subaru WRX straight cut set can be found in
vehicles with over 600hp. A far cry from the standard power
output from factory and certainly a power level that needs
a gear box of phenomenal strength to get power to the ground
without failure. Straight cut gearsets are relatively noisy
in operation and have an inherent whine to them. This is due
to the meshing of the teeth when the gears are rotating. The
meshing of straight cut teeth gives total contact along the
tooth at all times which gives the straight cut tooth its
added strength over the helically cut tooth . See the Image
below of a 600+HP Subaru WRX Straight Cut "Dog Box"
Helically
Cut Gearset.
PPG
helically cut gearsets are our most popular product. Mainly
used to transmit extreme power to the road in highly modified
street cars. They are usually purchased by those wanting less
gear noise than a Straight Cut gearset. Our Helical sets do
produce slightly more gear noise than a standard factory gearset
as a result of a purely motor sport based gear design which
makes necessary compromises in regards to gear noise, to achieve
uncompromised strength.
Synchromesh Engagement (Synchro ‘box)
PPG
Synchromesh Gearsets enable factory style gear selection to
be incorporated into your Helical or Straight Cut Gearbox.
The Synchro’ Box is mainly used for street applications.
At PPG we make the Synchromesh rings and hubs considerably
stronger than factory components and incorporate our high
quality materials and heat treating processes into the finished
product ensuring durability you can rely upon for years to
come.
Dog Engagement (Dog ‘box)
Essentially
a “race only” style of gear engagement, this has
become more and more popular for highly modified street cars.
Dog Engagement gear selection is available on either Helical
or Straight cut PPG Gearsets for a variety of applications.
And a combination of Dog and Synchro’ is available on
our Subaru sets. Providing fast, positive gear selection,
with or without the use of clutch. The PPG Dog Engagement
gear sets are undoubtedly the strongest and most “user
friendly” on the market. However it should be pointed
out that Dog Engagement Gearsets require fast, firm gear selection
and are quite noisy on each gear change.
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