Page 2 - INTRODUCTION; Thank you for purchasing the Traxxas Nitro 4-Tec 3.3; Even if you are an; SAFETY PRECAUTIONS; Traxxas Support
2 • NITRO 4-TEC 3.3 INTRODUCTION Thank you for purchasing the Traxxas Nitro 4-Tec 3.3 ™ all-wheel-drive nitro supercar. The Nitro 4-Tec 3.3 was designed to deliver extreme power for expert drivers. It is the most powerful Ready-To-Race ® all- wheel-drive nitro supercar ever conceived. The incredible...
Page 3 - BEFORE YOU PROCEED; Your hobby; Refers you to a page with a related topic.; SUPPORT; Installing Front Body Mounts; Installing Rear Body Mounts; INSTALLING THE BODY MOUNTS
NITRO 4-TEC 3.3 • 3 BEFORE YOU PROCEED Carefully read and follow all instructions in this and any accompanying materials to prevent serious damage to your model. Failure to follow these instructions will be considered abuse and/or neglect. Before running your model, look over this entire manual and ...
Page 4 - Skill Level = Myriad Semi Bold; bluehighway font; C h o o s e t h e M o d e l T h a t i s R i g h t F o r Yo u .; For Expert Drivers Only.; IMPORTANT POINTS TO REMEMBER; Model engine fuel is dangerous and highly poisonous.; BATTERIES AND BATTERY CHARGING; Charging the EZ-Start Battery”
4 • NITRO 4-TEC 3.3 This model is not intended for use by children (minors) under 16 years of age without the supervision of a responsible and knowledgeable adult. All instructions and precautions outlined in this manual should be strictly followed to ensure safe operation of your model. SAFETY PREC...
Page 5 - TOOLS, SUPPLIES AND REQUIRED EQUIPMENT; SUPPLIED TOOLS AND EQUIPMENT; Recommended Equipment
NITRO 4-TEC 3.3 • 5 TOOLS, SUPPLIES AND REQUIRED EQUIPMENT Your Nitro 4-Tec comes with a set of specialty metric tools. You’ll need to purchase other items, available from your hobby dealer, to operate and maintain your model. SUPPLIED TOOLS AND EQUIPMENT REQUIRED TOOLS AND EQUIPMENT (sold separatel...
Page 7 - QUICK START: GETTING UP TO SPEED
NITRO 4-TEC 3.3 • 7 QUICK START: GETTING UP TO SPEED The following guide is an overview of the procedures for getting your Nitro 4-Tec running, from opening the box to breaking in and tuning your engine. Refer to the pages indicated for details on each step. Look for the Quick Start logo on the bott...
Page 8 - TRAXXAS TQ 2.4GHz RADIO SYSTEM; TQ 2.4GHz RADIO SYSTEM PRECAUTIONS; Correct
8 • NITRO 4-TEC 3.3 TRAXXAS TQ 2.4GHz RADIO SYSTEM INTRODUCTION Your model includes the latest Traxxas TQ 2.4GHz transmitter with Traxxas Link ™ technology. The transmitter’s easy-to-use design provides instant driving fun for new R/C enthusiasts, and also offers a full compliment of pro-level tunin...
Page 9 - TQ 2.4GHz TRANSMITTER
NITRO 4-TEC 3.3 • 9 If the power indicator doesn’t light green, check the polarity of the batteries. Check rechargeable batteries for a full charge. If you see any other flashing signal from the LED, refer to the chart on page 37 to identify the code. Use the Right Batteries Your transmitter uses AA...
Page 11 - TQ RADIO SYSTEM RULES; Weak batteries will limit the radio signal between the; TQ 2.4GHz RADIO SYSTEM BASIC ADJUSTMENTS; Throttle Neutral Adjustment; TQ 2.4GHz RADIO SYSTEM CONTROLS
NITRO 4-TEC 3.3 • 11 TRAXXAS TQ 2.4GHz RADIO SYSTEM TQ RADIO SYSTEM RULES Always turn your TQ 2.4GHz transmitter on first and off last. This procedure will help to prevent your model from receiving stray signals from another transmitter, or other source, and running out of control. Your model has el...
Page 12 - USING THE TQ 2.4GHz RADIO SYSTEM; Range-Testing the Radio System
12 • NITRO 4-TEC 3.3 USING THE TQ 2.4GHz RADIO SYSTEM The TQ 2.4GHz Radio System has been pre-adjusted at the factory. The adjustment should be checked before running the model, in case of movement during shipping. Here’s how: 1. Turn the transmitter switch on. The status LED on the transmitter shou...
Page 13 - Decreased Steering Sensitivity (Negative Exponential); SETTING UP THE ANTENNA; Do; Antenna
NITRO 4-TEC 3.3 • 13 Steering Sensitivity (Exponential) The Multi-Function knob on the TQ2.4GHz transmitter has been programmed to control Steering Sensitivity (also known as exponential). The standard setting for Steering Sensitivity is “normal (zero exponential),” with the dial full left in its ra...
Page 14 - The TRX; The number one cause of premature; AIR FILTER MAINTENANCE; THE TRX 3.3 RACING ENGINE
14 • NITRO 4-TEC 3.3 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 ...
Page 15 - Needle; TRX 3.3 Racing Engine Illustrated
NITRO 4-TEC 3.3 • 15 Nitro 4-Tec’s fuel tank is equipped with a built-in sintered bronze fuel filter. THE TRX 3.3 RACING ENGINE Air Filter Base Head Protector PowerTune ™ head (Cylinder head) EZ-Start Drive Unit EZ-Start Motor Engine Mount Low-Speed Needle Throttle Arm Clutch Bell Flywheel Carbureto...
Page 16 - TERMS TO KNOW
16 • NITRO 4-TEC 3.3 THE TRX 3.3 RACING ENGINE TERMS TO KNOW You’ll find these Nitro R/C engine terms throughout this section of the manual. .15 - .15 or “15” refers to the displacement of the engine. The TRX 2.5 Racing Engine is .15 cubic inches or 2.5 cubic centimeters (cc). The name “TRX 2.5” is ...
Page 18 - The Fuel; Use the Right Fuel
18 • NITRO 4-TEC 3.3 DANGER! Model engine fuel is poisonous to humans and animals. Drinking the fuel can cause blindness and death. Handle with care and respect. Keep fuel out of reach of small children at all times! While driving, do not leave your fuel dispensing bottle on the ground where a child...
Page 19 - The Air Filter
NITRO 4-TEC 3.3 • 19 THE TRX 3.3 RACING ENGINE Filling the Fuel Tank Use a fuel dispensing bottle (Traxxas Top Fueler, included) to put fuel into Nitro 4-Tec’s fuel tank. To fill the fuel bottle, squeeze the air out, insert the dispenser tip into the fuel can, and release your grip on the bottle. As...
Page 20 - See page 27 for more; The Carburetor; Understanding the Carburetor adjustments; The Fuel Mixture Needles; Air
20 • NITRO 4-TEC 3.3 See page 27 for more information on how air density affects engine tuning. The Carburetor Understanding the Carburetor adjustments The carburetor performs several functions. It controls the engine’s speed by restricting the intake of air and fuel into the engine. It atomizes the...
Page 21 - The optimal fuel mixture setting; to provide a safety margin against having a lean condition if; The Idle Speed Adjustment; Water Valve; Lean; See; Factory Needle Settings
NITRO 4-TEC 3.3 • 21 point, fuel metering is entirely controlled by the high-speed needle. Again, using our water hose example, when the spray nozzle at the end of our garden hose is fully open, then the main water valve can be used to adjust how fast the water flows. The engine’s performance is dir...
Page 22 - Using Other Chargers; THE TRAXXAS Ez-START ELECTRIC STARTING SYSTEM
22 • NITRO 4-TEC 3.3 The Traxxas EZ-Start brings the convenience of push-button electric engine starting to your Nitro 4-Tec. The EZ-Start consists of a hand-held control unit and an on-board motorized starter. Power for the EZ-Start system comes from a 7.2-volt rechargeable battery pack installed i...
Page 23 - Protection Mode; The EZ-Start uses Smart Start; Use a Strong Starter Battery
NITRO 4-TEC 3.3 • 23 Protection Mode The EZ-Start uses Smart Start ™ technology to monitor the condition of the system and detect failures. The controller monitors the load being placed on the EZ-Start motor. If the load becomes excessive, the system shuts off power to the motor to prevent costly da...
Page 24 - See Important Points to; BREAKING IN YOUR TRX 3.3 RACING ENGINE; Starting Your TRX 3.3 Racing Engine for the First Time; Factory Needle Settings:
24 • NITRO 4-TEC 3.3 See Important Points to Remember on page 4 for other precautions. BREAKING IN YOUR TRX 3.3 RACING ENGINE The TRX 3.3 Racing Engine uses a ringless, aluminum-brass-chrome (ABC) piston/sleeve construction. This type of engine design relies on a very precise running fit between the...
Page 26 - TUNING YOUR TRX 3.3 RACING ENGINE; Never
26 • NITRO 4-TEC 3.3 Winter Break-in Tips During the break-in process, the piston and sleeve wear into each other to form a precise fit. The engine needs to heat up to a temperature around 200 to 215°F to allow the piston and sleeve to achieve this fit properly. A precise fit between these two compo...
Page 28 - Once the engine is tuned, then observe the temperature.; any; signs of overheating.
28 • NITRO 4-TEC 3.3 Idle Speed Adjustment Once the high and low-speed mixtures have been set, reduce the idle speed to the minimum reliable idle speed. Remember, this adjustment should be made while the engine is running at normal operating temperature. 1. Turn the throttle trim on the transmitter ...
Page 29 - Introduction; DRIVING YOUR NITRO 4-TEC
NITRO 4-TEC 3.3 • 29 Introduction Your TRX 3.3 Racing Engine is broken in, the fuel mixture is balanced, and the idle is set…now it’s time to have some fun! This section contains instructions on making adjustments to your Nitro 4-Tec. Before you go on, here are some important precautions to keep in ...
Page 30 - Adjusting the Shift Point; Alignment Specs; Camber; Access; Front
30 • NITRO 4-TEC 3.3 ADJUSTING YOUR NITRO 4-TEC 3.3 It is important that your engine is properly tuned and has reached full operating temperature before making shift point adjustments. Stop the engine before making adjustments. The transmission may not shift if the adjustment screw is turned too far...
Page 31 - Using Belt Adjustment
NITRO 4-TEC 3.3 • 31 ADJUSTING YOUR NITRO 4-TEC 3.3 At no time should the body of the model strike the ground or interfere with the suspension or tires. Either situation will cause extremely unpredictable handling. Toe-in Set the steering trim on your transmitter to neutral. Now, adjust your tie rod...
Page 32 - Lock the flywheel with a
32 • NITRO 4-TEC 3.3 ADJUSTING YOUR NITRO 4-TEC 3.3 Gear Ratios Another Nitro 4-Tec 3.3 feature is the ability to change the gear ratios. Currently, there are three optional gear ratios for the Nitro 4-Tec. The stock gear ratio will provide very high (70+ MPH) top speeds. The following gear ratio ch...
Page 33 - MAINTAINING AND STORING YOUR NITRO 4-TEC
NITRO 4-TEC 3.3 • 33 If the engine is worn or damaged enough to require replacing the piston, sleeve, or connecting rod, consider exchanging your old engine for a brand new engine under the terms of the Traxxas Lifetime Engine Replacement Plan (ERP). It could save you time and effort. Details are in...
Page 34 - see “Set Multi-Function knob for; Top Dead Center
34 • NITRO 4-TEC 3.3 7. Connect the EZ-Start controller to the model and spin the engine for 10 seconds. 8. Remove the rag or paper towel and repeat steps 5–7 two more times. 9. Clean and re-oil the air filter so it will be ready for use next time. See page 19 for air filter maintenance instructions...
Page 36 - Steering Sensitivity by default, see page 13); counter-clockwise to its stop will eliminate all brake action).; TRAXXAS LINK; Restoring Factory Defaults; transmitter LED will blink red.; Throttle Trim Seek Mode; TQ 2.4GHz ADVANCED TUNING GUIDE
36 • NITRO 4-TEC 3.3 Your Traxxas transmitter has a programmable Multi-Function knob that can be set to control various advanced transmitter functions (set to Steering Sensitivity by default, see page 13) . Accessing the programming menu is done by using the menu and set buttons on the transmitter a...
Page 37 - Model Lock; Press MENU and SET to return to driving mode.; Note; : To unlock a memory, press SET twice at step 5. The LED will; Failsafe
NITRO 4-TEC 3.3 • 37 TQ 2.4GHz ADVANCED TUNING GUIDE Model Lock The Traxxas Link feature can store up to twenty models (receivers) in its memory. If you bind a twenty-first receiver, Traxxas Link will delete the “oldest” receiver from its memory (in other words, the model you used the longest time a...
Page 38 - Enter Programming; MENU TREE
38 • NITRO 4-TEC 3.3 TQ 2.4GHz ADVANCED TUNING GUIDE Press MENU to move through options. Press SET to select an option. Press MENU to move through options. Press SET to select an option. Press SET to select an option. Enter Programming Press and hold MENU for 3 seconds Steering Sensitivity (Expo) On...
Page 39 - MENU TREE FORMULAS
NITRO 4-TEC 3.3 • 39 TQ 2.4GHz ADVANCED TUNING GUIDE Set Multi-Function knob for STEERING SENSITIVITY (Expo) Press/hold MENU green LED blinks Press SET red LED blinks x 8 Press SET to confirm green LED blinks (x8) Press/hold MENU returns to driving mode Set Multi-Function knob for THROTTLE SENSITIVI...
Page 40 - NITRO; owner
1100 Klein Road, Plano Texas 75074 1-888-TRAXXAS 100304 KC1250-R00 MODEL 4807 4-TEC NITRO owner ’ s manual
