31
L510023-07
EXHAUST SYSTEM
IMPORTANT: It is the responsibility of the boat
manufacturer, or the installing dealer, to properly
locate the engine and install the exhaust system.
Improper installation may allow water to enter the
exhaust manifolds and combustion chambers, and
severely damage the engine.
Damage caused by water entering the engine through
the exhaust system WILL NOT be covered by Crusader
Engines Warranty, unless the damage is the result of
defective part(s).
When designing and installing the exhaust system, it
is very important that the following points be taken into
consideration.
1. A water lift muffl er, or collector, mounted
close to the exhaust outlets - These
components hold hot water. Once the engine
is shut off, this sets up a “sauna” effect.
Condensation will form and enter the exhaust
manifolds and run into the cylinders in some
cases. Always try to install these components
as far away from the exhaust outlets as possible.
2. Not enough drop in the exhaust hose - The
most aggressive drop between the exhaust
outlet and the muffl er, or collector, will aid in
preventing condensation from forming and
working its way back into the exhaust manifold(s)
and elbow(s).
“A” minus “B” must be this
Engine Models distance or more
All Engines 12 in. (304.80 mm)
Figure 25 Proper Exhaust Elbow Location
B
A
A -- FROM WATERLINE TO REFERENCE POINT
B -- FROM HIGHEST POINT ON EXHAUST ELBOW TO SAME REFERENCE POINT
EXHAUST RISERS
To determine if exhaust risers are required, make the
following measurements. With the boat in the water and
maximum load onboard, make measurements “A” and
“B” (Figure 22). Subtract measurement “B” from “A.” If
the difference between the two measurements is less
than specifi ed on the drawing and chart below, it will be
necessary to add exhaust risers as required to correctly
position the exhaust elbow.
3. Engine Operation - You should never start
the engine just for the sake of warming it
when not being used. This does not get the
manifolds up to temperatures needed to burn off
condensation. This will get worse with colder
inlet water temperatures.
To Next Page
Loading...
Need help?
General
