14 • SLAYER PRO 4X4
Traxxas strongly discourages
changing or modifying any
part of the TRX 3.3 Racing
Engine. Old tech tips and
tricks that may have boosted
the power of other engines
could seriously diminish the
performance of the
TRX 3.3 Racing Engine.
There’s more advanced
thinking, development,
and testing in the stock
parts of your TRX 3.3
Racing Engine than in many
aftermarket manufacturer’s
performance parts. The TRX
3.3 Racing Engine is already
the most powerful engine
in its class and may not
benefit from average, low-
tech, aftermarket bolt-on
performance items.
INTRODUCTION
The TRX
®
3.3 Racing Engine is the next generation of TRX nitro
power. The larger displacement and advanced porting generate
class-leading horsepower while still maintaining the TRX Racing
Engine characteristics of broad, linear power delivery and ease of
tuning. Focused engineering and rigorous testing have yielded
unprecedented power and uncompromising performance that turns
ready-to-run into Ready-To-Race®.
The TRX 3.3 Racing Engine takes a total-system approach. Each
part of the engine, from the air filter to the exhaust tip, is carefully
engineered to work in harmony with other engine components. Each
part complements the next, to extract maximum power. The TRX 3.3
Racing Engine is designed to be tolerant of variations in tuning, and
to run successfully through a wide range of variable atmospheric
conditions such as changes in temperature, humidity, and altitude.
In order to get the longest engine life and keep the TRX 3.3 Racing
Engine in top running condition, it is very important to perform
regular routine maintenance.
The number one cause of premature
engine wear and failure is lack of care and maintenance!
BREAK-IN
The TRX 3.3 Racing Engine is manufactured to exacting tolerances
and requires a specially-designed break-in procedure to accomplish
the final precision fitting of the internal engine components. It is very
important that you follow the new break-in procedure as closely as
possible to achieve the best performance and longest life from your
TRX 3.3 Racing Engine. Engine break-in will take between one and
two hours. Old style break-in procedures, such as idling the engine on
the bench for several tanks of fuel or simply running the engine with
a very rich fuel mixture for the first 4 tanks of fuel, will not achieve the
best results. Follow the easy steps in this manual.
AIR FILTER MAINTENANCE
Dirt is the worst enemy to your engine. A clean air filter is absolutely
critical for long engine life. Due to the high performance nature of
the TRX 3.3 engine, a tremendous amount of vacuum is created to
move a large volume of high velocity air through the carburetor. This
model is equipped with a two-stage high performance air filter which
requires that the pre-filter stage be cleaned and oiled every hour of
operation, and the primary filter be cleaned and oiled every 3-4 hours.
An extra pre-lubed air filter set has been provided with this model to
encourage you to maintain the engine’s air filter.
AFTER-RUN MAINTENANCE
Perform after-run maintenance on the engine to prevent corrosion
from building up on the internal engine components. The fuel
naturally attracts moisture, and corrosion can build up very quickly
inside the engine if it is not prevented.
A few minutes spent before and after each time you run your model
will allow you to enjoy it for a long time to come. Read on for more
exciting details about your new engine.
THE TRX 3.3 RACING ENGINE
™
