Table of Contents
How does a marine exhaust system work?
Water-cooled inboard engines inject cooling water into the exhaust pipe, which cools the exhaust and muffles engine noise. The exhaust then pushes the water out the exhaust pipe. This is known as a wet exhaust system.
Do diesel boats require def?
As of 2014, the EPA (Environmental Protection Agency) started phasing in the new regulations for diesel emissions in the marine industry. Now, diesel exhaust fluid (DEF) is all the more important, even required, for commercial vessels.
When must powerboats use a muffler?
When do powerboats need a muffler? Every boat equipped with a motor other than a stock (unmodified) outboard engine must have a muffler and use it while operating within five nautical miles (9.26 km) of shore.
How often do you change manifolds and risers?
Good-quality risers last on average 4 – 5 years in saltwater, and 6 – 8 years in freshwater. Exhaust manifolds will last on average 6 – 8 years. Saltwater use may reduce the life span to 3 years. Light use in fresh water may increase the life span to up to 20 years.
How long do exhaust risers last?
How does through hull exhaust work?
THRU HULL. The most cost effective exhaust option is a full time thru-hull system. This system allows the exhaust to exit full time through the transom or side hull with out any control over the exhaust flow or sound.
What vessel is exempt from using a muffler while operating within five nautical miles of the shore?
Offshore type boats are allowed to operate off muffler under the current regulation only if they are more than 5 nautical miles from shore. Antique boats built before 1960 are exempt from the muffler regulation.
What size exhaust do I need for a Cummins Marine engine?
There are no REQUIRED exhaust sizes for Cummins marine engines; there are RECOMMENDED minimum sizes that may or may not meet the required exhaust restriction requirements published by Cummins. Those two statements above are also applicable to most marine engine recommendations / requirements.
What is the warranty on a Cummins Marine exhaust?
We are the only fabricator that will remanufacture Cummins marine exhaust elbows and marine exhaust risers and then warranty the work for 5 years. Your elbow or riser will be rebuilt not just repaired.
What material is a Cummins exhaust made out of?
The materials we use are 316L stainless steel and are nearly double the thickness of the new replacement parts. If you have a Cummins 4BT, 6BT, 6BTA or a 6CT then we can probably remanufacture your exhaust elbow or exhaust riser and save you hundreds of dollars and be far better than when it was new.
Why choose marine exhaust systems?
Marine Exhaust Systems, Inc. is the # 1 choice of boat builders and engine manufacturers all over the world, meeting the needs of the Commercial, Military and Pleasure Yacht Industries for over 30 years with customers in more than 40 countries.