INSTALLATION
12
May 2017 / M-GV4 Piccolo for marine applications / EN
Figure 12: Water trap in exhaust system
Figure 13: Water will collect in the hanging bend of the exhaust
gas hose and will cause back pressure
Figure 14: Outlet direction
Do not direct the outlet directly toward the water
surface.
2.10 DRY EXHAUST SYSTEM
2.10.1 General remarks
A dry exhaust muffler system should be very effective in
silencing exhaust noises when applying the right mufflers.
However noise could be generated by vibrations in the mufflers
and be transferred to the boat. Tacit factors like the length of
specific pipe sections could cause the noise to be amplified. It is
very difficult to take these factors into account.
The standard Whisper Power 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 jacket 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 through the roof of a
boat, measures has to be taken to prevent
rainwater to enter the system. Special rain caps
are available as an option.
Figure 16: Ways to prevent water from getting in
A negative feature of a dry exhaust system is the heat radiated
by its components. Measures must be taken to overcome the
heat problem: When a dry exhaust has its outlet on the deck or
on the roof of the steering house, all the pipes inside the boat
has to be insulated.
Figure 12, one time up
Figure 15: Dry exhaust systems on boats
OK!
OK!
OK!
WRONG!
WRONG!
WRONG!
