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HEADER OPTIONS
541400 MODIFY TO FIT EXISTING EXHAUST PORTS
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Colors may match to how they appear on computer monitor.
541450 CUSTOM COLORS
Starting at $175.00
VIEW COLORS |
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Only the All Stainless Headers can be polished. Pictured
is our Big Tube 2 1/4", 540571 All Stainless Header with, 541410
Jacketed Thru Hull Tail Extension.
541426 POLISHING STAINLESS HEADERS
$1500.00
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541404 EXHAUST COLLECTOR EXTENSIONS
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The first step in fighting reversion. This
extends the exhaust collector by reducing the diameter to 3.5 inches
and extending it through the cone of the header so it sticks out
about 3/4". By doing this you not only extend the mixing point of
the header further aft by about 4", you also gain access to the
exhaust collector. In the field you can weld to the end of the
extension to move the mixing point of the header even further back.
We highly recommend this option because you can modify the header
for larger cubic inch motors or more radical camshafts.
541404
3.5 IN COLLECTOR
EXTENSION
$140.00
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541405 EXHAUST COLLECTOR EXTENSION
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First step in fighting reversion. This is
the same as our 541404 option except we maintain the exhaust
collector diameter of 4" and install a 4 1/2" cone on the header.
Then a 4 1/2" to 4" reducer is used or a 4 1/2" exhaust tip.
By doing this you not only extend the mixing point of the header further
aft by about 4", you also gain access to the exhaust collector.
In the field you can weld to the end of the extension to move the
mixing point of the header even further back.
We highly recommend this option because you can modify the header
for larger cubic inch motors or more radical camshafts.
541405 4 IN COLLECTOR EXTENSION
$175.00
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The easiest way to combat reversion is to add collector length if
room allows. Both inside and outside collector are lengthen
thus moving the mixing point of the header farther aft.
541403-2 PLUS 2" $100.00
541403-4 PLUS 4" $120.00
541403-6 PLUS 6" $130.00
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Shown above is a set of 540304 Headers with a 541402 Jacketed Tail
Extension Option.
Headers configured like this will accept all of our Tail Extension
options.
541402 Jacketed Tail Extension
541410 Jacketed Thru Hull Tail Extension(loud)
541412 Jacketed Thru Hull Muffler Tail Extension
This option may be beneficial for many different reasons.
Jacketed Tail Extensions will help in the fight against reversion by move
the mixing point of the water farther aft. Mixing water just
prior to the boats exhaust tip will provide some muffling effect.
Jacketed Tail Extensions can be made extra long and trimmed
in the field. This way the tip of the Tail Extension can extend to where it
actually touches the exhaust tip of the boat maximizing the jacketed
length.
If you are unsure about using a Jacketed Tail Extension or a
Jacketed Thru Hull Tail Extension (541410). This way you can try
the Jacketed Tail Extension first and if the engine still has a reversion problem
you can then replace it with a Jacketed Thru Hull Tail Extension.
541402 JACKETED TAIL EXTENSION $250.00
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The only way to completely eliminate reversion and steam migration.
Polish stainless steel Jacketed Thru Hull Tail Extensions have a
4 1/2" O.D. and extend past
the transom approximately 6" and are dressed on the outside with
polished stainless steel bezels and silicone gaskets.
Water is
fed into the exhaust stream at the last 3/4" of tail pipe. Can
be configured to exit water prior to the transom thus a totally dry
exhaust. Very loud.
541410 JACKETED THRU HULL TAIL
EXTENSION $850.00
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The only way to completely eliminate reversion and steam migration.
Polish stainless steel Jacketed Thru Hull Muffler Extensions have a 5" O.D.
passes
through the transom approximately 6" and are dressed on the outside
with polished stainless steel bezels and silicone gaskets. Water
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fed into the exhaust stream at the last 3/4" of tail pipe. Can be
configured to exit water prior to the transom thus a totally dry
exhaust. Muffler portion of tail is removable for repacking.
10 DB in noise reduction. Zero horsepower loss.
541412 JACKETED THRU HULL MUFFLER
EXTENSION $1250.00
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18-1.5MM Bung is welded into header collector. Usually on
the inside flat, but can be placed on top or outside flat but not on
bottom. Great place to monitor air fuel ratio. On our
Dyno engines this is where we check for reversion.
541407 O-2 FITTING 18-1.5MM
$140.00
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1/8 female pipe bung is usually welded into #1 or #2 primary tube
just below the exhaust flange.
541408 PYROMETER FITTING 1/8" FPT
$140.00
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Oil filter brackets to accept Mercury's oil filter mount is welded
directly to the header. There are basically two different
Mercury oil filter mounts. They are identified by the length
of mounting bolt. High oil filter brackets are used when the
existing oil filter mount bolted to the top of the elbow and 6" to
8" long bolts attached it. Low oil filter brackets are used
when the existing oil filter mounts bolted to the base of the elbow,
and 1 1/2" to 2" bolts attached it.
541418 MERCURY OIL FILTER BRACKET (HIGH) $45.00
541419 MERCURY OIL FILTER BRACKET (LOW) $45.00
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Mercury shift bracket is welded to the starboard header.
541420 MERCURY SHIFT BRACKET $35.00
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Mercury computer or ignition module bracket is welded to the
port header.
541420 MERCURY COMPUTER OR IGNITION BRACKET
$35.00
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Add an additional 3/4" of valve cover clearance to the standard
Mercury and Jet style headers. Not available in 33" wide or
tall headers.
541424 EXTRA VALVE COVER CLEARANCE
$135.00
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Preheat Header Body option introduces water into the bottom water rail first,
out the forward collector fitting, into the front of the engine, out the
thermostat housing, into the aft collector
fitting and then it mixes with the exhaust.
CAUTION: The header body has a much larger heat sink area than
an old school exhaust and will require a larger volume of water.
If you have a Jet Boat it has a greater chance of overheating at
idle. If you have a V-Drive Boat a 1" cam drive pump is
recommended.
541425 PREHEAT HEADER BODY
$125.00
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