Dry Exhaust System - Mastervolt WHISPER 3 Installation Manual

INSTALLATION
Figure 15. Making use of the space below the floor to get
an optimal flow of air through the radiators.
Most effective and easy is to mount the radiator in the side
of the vehicle. (If possible below the level of the top of the
engine.) A louvered grid should protect the radiator from
rain and objects, but must not block the airflow. The fan
should be inwards which causes the air to blow outwards.
A free flow of air should be guaranteed. The ventilation
(connection to the expansion tank) should be in the
outgoing flow on top of the radiator.
A disadvantage of having the radiator in the side is
possibly more noise of the electric fan and a flow of air that
could be felt by people passing by.
Figure 16
The radiator on the roof is often the best option from the
point of view of keeping the noise of the fan away from
people and it give the best result in dissipating the heat.
However often this option conflicts with the possible need
to keep the vehicle as low as possible. Another
disadvantage is that the piping has to go through the roof
that requires provisions to be waterproof.
Also negative is that roof mounted radiators are more
sensitive for air traps.
When having enough space it would be ideal to have the
radiators vertically mounted on the roof. The expansion
tank should be above the radiator.
10
Airflow
Side mounted
When having the radiator horizontally mounted on the roof
(refer to figure 17) enough space (50 mm) should be
between the roof and the fan to have a fre flow of air.
When the radiator is roof mounted there should be
protection against the weather. To avoid damage while the
vehicle is driving at high speed a spoiler could be needed.
horizontal
Figure 17. Two examples of top mount radiators
2.4.3

Dry exhaust system

1 GENERAL REMARKS
A dry exhaust muffler system should be as effective in
silencing the exhaust as a wet marine exhaust system
when applying the right mufflers. However noise could be
generated by vibrations in the mufflers and be transferred
to the chassis. Tacit factors like the length of specific pipe
sections could be important. It is very difficult to take these
factors into account.
Figure 18: Dry exhaust systems on vehicles
The standard Mastervolt exhaust kit contains the materials
to perform a professional installation. In the kit is a
stainless steel flexible bellow (hose) to allow for expansion
and to prevent vibrations to be transferred. Rubbers are
supplied to mount the mufflers flexible. The insulation
blanket for the flexible bellow and the resonance muffler
are also very effective in damping vibrations. Still it could
be that additional measures has to be taken like an extra
clamp in a vibrating section of pipe, insulation blankets on
other parts of the system and possibly even additional
mufflers.
When the exhaust is led to the roof of a
vehicle, measures has to betaken to prevent
rainwater to enter the system. Special rain
caps are available as an option.
November 2006 / WHISPER 3,5 for mobile applications / EN
vertical