MANIFOLDS, ELBOWS AND RISERS SERVICE MANUAL NUMBER 22
Page 7B-10 90-860074--1 FEBRUARY 2002
5. System must not cause excessive back pressure when measured at exhaust elbow
outlets. Back pressure MUST NOT exceed a 1000 mm (39-1/2 in.) water column, or 76
mm (3 in.) of mercury when measured with a mercury manometer [approximately 10.3
kPa (1-1/2 psi)]. Minimum exhaust hose size is 102 mm (4 in.).
71774
d
a
c
d
e
f
g
b
Typical Continuously Sloping Exhaust Line
a - Exhaust Elbow
b - Measurement - 379 mm (11 in.) Minimum
c - Exhaust Hose Or Pipe (Slope to Specifications)
d - Muffler
e - Exhaust Outlet Internal Shutter
f - Exhaust Flapper Valve
g - Waterline
71775
d
e
a
c
d
e
f
g
b
Typical Waterlift Muffler Exhaust System
a - Exhaust Elbow
b - Vent Line [6 mm (1/4 in.)]
c - Water Lift Muffler
d - Exhaust Hose
e - Drain Cock
f - Transom
g - Waterline
6. An oval-to-round exhaust adaptor (818184T) and tube (32-815529) is available to assist
in exhaust connection from the oval turbocharger exhaust elbow to 102 mm (4 in.) round
exhaust outlet pipes.
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