Step By Step Procedures on How-To Install a Corsa Captain’s Call Thru Hull Exhaust System
What are the benefits of installing a Thru Hull type Marine Exhaust System? There are several different types of Thru Hull Exhaust Systems being either the straight thru style where the exhaust simply exits the rear (Transom) or side of the boat as is the case with Side Exit systems. In both cases the exhaust system is very basic in that after exiting the exhaust riser the exhaust simply routes directly out the rear or side of the boat after being connected to a Thru Hull style exhaust tips. These tips are equipped with backflow diverter valves, also known as a water shutter to prevent water from entering the engine through the exhaust system by way of this connection. The importance of a properly functioning backflow diverter cannot be overstated. The other style of Thru Hull Marine Exhaust system is the Switchable style that allows you to control whether the exhaust exist through the propeller or the hull of the boat by simply activating a switch at the helm. These systems are very popular in regional locations that have noise restrictions.
In almost all cases reducing engine exhaust back pressure WILL improve the overall level of performance, and can also improve the life expectancy of the engine. We are asked on a regular basis as to what upgrade options are available for 4.3L and 5.0L engines specifically. In most cases the best starting point is always reducing exhaust back pressure. The reason being that most performance options are developed for the 350 and big block engines and therefore there aren’t that many available options for the 4.3L V6 and 5.0L V8 engines. Also keeping in mind the balance that increasing performance can also come with the risk of decreasing the longevity of the engine.
Installation Tips – After deciding on which system is the best fit for you there are a few installation factors that need to be considered.
1. After cutting the holes in the hull of the boat where the thru hull tips will be installed, if your transom is constructed from wood we recommend sealing this exposed wood with a wood sealing product.
2. If you are installing thru hull tips but want to plug and leave the existing Y-Pipe we suggest cutting a plug piece of wood (use a standard 2×4) and seal it with resin, then install.
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1. Measure your boat hull for the required space to install thru hull tips. Select this link to make sure you in fact have the necessary space required to install thru hull tips. Measuring Link. If you do not have the required space to install thru hull tips you may want to consider a side exit system.
2. Send an email to [email protected] outlining the year/make/model of your boat AND the engine. Make sure to include your engine model information as well as whether or not the engine exhaust system has 3″ or 6″ spacer blocks between the manifolds and risers.
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