Dynamite MACH2 .19T Manual

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Engine Removal and Inspection

Remove the engine from the vehicle. When removing the

engine take note as to which engine mount screw the

yellow starting system ground wire is attached to. It will

be important to re-attach the ground wire in the same

position when re-installing your new engine.

Remove clutch, air filter, tuned pipe and starter assembly.

Save all of these original Traxxas parts as most of them

will be used later.

This would be a perfect time to inspect the condition of

your clutch bell bearings, clutch shoes and clutch spring.

If the bearings are gritty feeling, they can cause your new

engine to perform poorly and suffer from an inconsistent

and unreliable idle. A clutch and bearings that are worn

is the number one reason for an engine that does not

operate at its highest potential on a consistent and

reliable basis.

If the clutch shoes are worn, glazed over or have the

pivot pin holes elongated replace them along with the

clutch spring at this time.

Dynamite offers replacement bearings (DYN3223) and

clutch shoes with spring (DYNP5184).

Replace the air filter element at this time also.

Replacement Engine Preparation

Install clutch

Use the original Traxxas tapered collet, flywheel, and

clutch bell. Use the clutch nut that has been included

with your new engine for reassembly. If needed use fresh

clutch shoes, clutch spring and bearings.

Assemble the clutch system onto the engine in the order

shown in image #1. The order of assembly goes in this

order:

Tapered collet

Flywheel

Clutch nut

Clutch shoes and spring (take note as to the

orientation of the clutch shoes when installed

onto the flywheel. See Image 2)

5 x 7 washer

Clutch bell and bearings

5 x 7 washer

3 x 6 button head screw.

Image 1

Image 2

Completed Clutch Assembly

Final end play for the clutch bell is adjusted with the 5

x 7 shims. Use enough shims to allow approximately

.5mm of endplay on the clutch bell. If the endplay is

larger than .5mm add 5X7 washers to the outside of the

clutch bell in order to remove excess play. When the

assembly is finished the clutch bell should be able to

spin freely with no drag. If there is excess drag, check

the clutch bell bearings for smooth operation or remove

a shim from behind the 3 x 6 button head screw.

Install the exhaust system

If your vehicle is supplied with a bolt on style exhaust

manifold, use the supplied O-ring seal (DYN0719) "C"

shaped manifold adaptor and retaining spring. When

using the "C" shaped manifold adaptor, be sure the

ends of the retaining spring are positioned into the area

previously occupied but the mounting screws that were

removed earlier.

If your vehicle is supplied with a spring retention style

manifold, use the supplied O-ring seal (DYN0719) along

with the manifold gasket (DYNP5528) and retention

spring.

Install starting system

Install the starting system using the three 3 x 12 Traxxas

button head screws.

Attach air filter

Install the Traxxas air filter onto the DYN engine using a

wire tie. A new filter element should be used. Make sure

the air filter assembly is attached securely. Loss of the air

filter will shorten the engine's life dramatically.

Re-install the engine

Using the reverse order of removal, re-install the engine

into the vehicle. Use the supplied 3 x 10 cap screws to

attach the engine the mounts. Don't forget to re-attach

the yellow ground wire in the same position when

re-installing your new engine. It is highly recommended

to use a medium strength threadlocking compound on

the engine mounting screws.

In order to set the gear mesh properly, place a small

strip of paper or poly bag between the clutch bell and

spur gear. Force the two gears together and tighten the

motor mount screws securely. Remove the paper/poly

bag. Your gear mesh should have just a slight amount of

play without being too loose or too tight. Spin the drive

wheels on the vehicle. If the gear mesh binds or makes

a whining sound, the mesh is too tight. Simply loosen

the motor screws and re-try with a different amount of

pressure. This process offers a perfect quiet gear mesh.

Re-attach the starter motor wires

In order to attach the blue remote glow driver wire to

the glow plug, it may be necessary to open up the end

of the remote glow driver's lead wire with a pair of small

needle nose pliers. Some Traxxas vehicles are equipped

with a glow plug lead that is replaceable. If your vehicle

has a glow plug lead that is replaceable an option here

is to install the Dynamite Head Lock Glow Plug Lead

(DYN7682).

To finish this part of the installation, tuck the glow plug

lead wire down into the open fin on the cooling head for

protection.

Your engine is now ready to start and begin the break-in

procedure.

Follow the break in and tuning procedures outlined in the

universal engine guide included with your engine.

For maximum performance of your engine we highly

recommend the use of Dynamite inline exhaust

systems (DYN6628, DYN6629 and DYN6630),

air filters(DYN2612) and Max-Life

™

clutch shoes

(DYNP5184).