Introduction
There’s nothing like the TRX 2.5 Racing Engine in your new
S-Maxx.The TRX 2.5 Racing Engine is vastly superior to typical
R/C engines and belongs in the category of specialty high-
performance racing engines. It’s the result of years of focused
engineering development,and thousands of hours of
controlled testing and rigorous real-world running.It offers
unprecedented power and performance that turns ready-to-run
into Ready-To-Race
®
.
The TRX 2.5 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 2.5 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.
Break In
The TRX 2.5 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 2.5 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
A clean air filter is critical for long engine life.Due to the high-
performance nature of the TRX 2.5,a tremendous amount of
vacuum is created to move a large volume of high-velocity air
through the carburetor.Dirt is the worst enemy to your engine.
Clean the air filter after each hour of running to prevent sucking
dirt into the engine.
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.
Traxxas strongly
discourages changing
or modifying any part
of the TRX 2.5 Racing
Engine. Old tech tips and
tricks that may have
boosted the power of other
engines could seriously
diminish the performance
of the TRX 2.5.
There’s more advanced
thinking, development and
testing in the stock parts of
your TRX 2.5 than in many
aftermarket manufacturer’s
so-called performance
parts. The TRX 2.5 is already
the most powerful engines
in its class and simply will
not benefit from average,
low-tech, aftermarket bolt
on performance items.
The TRX 2.5 Racing Engine
21
