MA00199
USER GUIDE
NOSRAM RS.30 MONSTER
# 94220
4.12 HP
33.200 rpm
for distributor address see packaging
1. SPECIFICATION
Engine size
Exhaust
Bore
Stroke
Liner
Number of ports
Crankshaft
Crankcase
Black coloured NOSRAM XTEC T6 .30 Heavy-Duty Competition
Piston
Connecting Rod
Oversized, knife-edge shaped and made from extra strong aluminium
Glowplug
Standard style. NOSRAM Power Pluxx2 Std. R5 (#94750) included.
Carburetor
Power Output*
Max. RPM*
Weight
*Figures may vary depending on used fuel, exhaust system and tuning.
2. FUEL
Never use regular gasoline or airplane fuel! Use fresh 2-stroke model car fuel only. We recommend
using our line of NOSRAM fuels.
For the NOSRAM RS.30 Monster Pullstart engine, we recommend a fuel with 25% nitro. Never
exceed 36% nitro. A higher nitro content will decrease your engine's lifetime, but it will produce
more power.
3. AIRFILTER
A good airfilter is very important for the life of your engine. Never run without an airfilter, as quick
and permanent damage will result! Don't forget to impregnate the airfilter with a suitable oil before
usage. Carefully clean the airfilter at least after every tenth tank. Replace the airfilter every 3 litres
(~1 gallon) of usage.
Oiling the airfilter is very important as an airfilter without oil has nearly no cleaning ability which will
result in a damaged engine after a very short time.
4. GLOWPLUG
Use only standard style glowplugs for this engine. We recommend using our line of high-quality
NOSRAM Power Pluxx2 standard glowplugs (#94730 - #94760, availabe as R3 to R6). Check them
frequently and never run with worn-out or old glow-plugs since they could damage your engine.
The glowplug will turn dull when your engine was too lean and should be replaced. They should stay
bright like chrome. If the glowplugs wear out too fast, an additional 0.1mm shim between burnroom
and liner is recommended. Whenever you have trouble with the engine stalling several times for no
reason, replace the glow-plug first!
TIP: Our NOSRAM team always uses a NOSRAM Power Pluxx2 R5 (#94750) plug for the NOS-
RAM RS.30 Monster Pullstart engine.
5. EXHAUST SYSTEM
Never run without a pipe since this will cause excessive overheating and may damage your engine. A
good pipe has a very huge effect on the performance and the operating characteristic of a 2-stroke
engine.
For the NOSRAM RS.30 Monster Pullstart engine, we recommend using our high-quality NOSRAM
Monster Power Pipe Set (#94881) for maximum performance.
PULLSTART
www.nosram.com
.30 (4.92ccm)
Rear
19.20mm
17.00mm
ABC
5+1 (5x transfer-, 1x exhaust-port)
14.0mm / 10.0mm bore / SG shaft / Triple Turbo scoop
Specially lightened and made from high-silicium alloy
with double bushings
NOSRAM XTEC P3-series carburetor with 9.0mm venturi.
Made from lightweight Aluminium.
4.12 PS
33.200
430 g
© NOSRAM 2008
Dear Customer,
thank you for your trust in this NOSRAM product. By purchasing a NOSRAM nitro engine, you have
chosen a high-performance and highly sophisticated product, which doesn´t make any compromise
between maximum performance and easy tuneability. We hope you enjoy your new engine.
Please read the following instructions carefully before you start using your NOSRAM RS.30
Monster Pullstart engine. This user guide contains important notes for the installation, the safety,
the use and the maintenance of this product. Thus protecting yourself and avoid damages of the
product.
Proceed according to the user guide in order to understand your NOSRAM RS.30 Monster Pullstart
engine better. Please take your time as you will have much more joy with your product if you know
it exactly.
This user manual shall be kept in a safe place. If another customer is using this product, this manual
has to be handed out together with it.
6. HEAD CLEARANCE
We recommend a real head clearance between piston and burnroom of about 0.70-0.75mm (0.027-
0.030") or more, when the piston is at Top Dead Center. The real head clearance can be calculated
as follows:
Real head clearance = Thickness of head shims + 0.40mm*
We suggest to start with 0.30mm (0.012") shims underneath the combustion chamber. You may
want to adjust the shims depending on nitro-content (see table) or track layout. Large tracks may
require an extra 0.10mm (0.004") shim to reach higher topspeed and improved fuel consumption,
but this will decrease acceleration slightly.
Nitro content
Real head clearance
Head shims
Please note: The head clearance is already pre-set in the factory for optimum performance and
does not need to be changed to make the engine run perfect. This setting should only be used by
experienced model makers.
* (that's due to the internal construction of the engine and the compression of the head shims, when the cooling head is mounted)
7. CARBURETOR
The factory settings of the engine are as following and are a good starting point for you, if you are not
satisfied with your carburetor settings. Turn in the needles completely (Caution: Do not overtighten
them!) and loosen them the required number of turns again:
• Mid range:
• Main:
Idle screw (No.1):
Adjusts the air flow when carburetor is fully
closed and is the mechanical stop for the throttle
valve. Turn CW for higher idle-speed and CCW for
lower idle-speed. In neutral, the valve should be
open by approx. 0.5-1.0mm.
Mid range needle (No.2):
Adjusts the mid/low-speed flow rate of the fuel.
Turn CW for leaner and CCW for richer setting.
Main speed needle (No.3):
Adjusts the main flow rate of the fuel at full throttle or when the throttle is opened
significantly. Turn CW for leaner and CCW for richer setting.
8. RUN-IN
Proper run-in of the engine is a very important step in ensuring that you get the highest performance
and lifetime of your engine. Take your time for proper run-in. Do not use run-in benches, but use
your car for run-in. Use the same fuel as you will be using for the life of the engine. Special run-in
fuel is not needed. If your engine doesn't start easily you may try loosen the glow-plug by ½-turn to
decompress the engine and try again. Don't forget to tighten the glow-plug again once the engine
started!
Procedure:
• Start the engine and set the main-needle very rich, i.e. excessive smoke coming from the muff-
ler.
• Let the engine idle for 2mins first to warm it up.
• Now start driving your car till the fuel tank is empty. It will be slow and sluggish, but this is an
important step.
• Do not allow the engine to rev-up too high and only apply half throttle during this run-in period.
• The engine should not be too cold, but also not too hot during run-in. 70-90°C (160-195°F) is
perfect.
• Let the engine cool down for 15mins after each tank during the run-in period.
• We recommend running with this rich setting for 5 complete tanks of fuel before you start tuning
your engine.
16%
20%
25%
0.60mm / 0.024"
0.70mm / 0.027"
0.70mm / 0.027"
0.20mm / 0.008"
0.30mm / 0.012"
0.30mm / 0.012"
d the compression of the head shims, when the
d the compression of the head shims, when the cooling head is mounted)
2,25 turns
2,75 turns
1
3
of
of the
30%
0.80mm / 0.032"
0.40mm / 0.016"
2