Marine Parts
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- February 03, 2025
The exhaust manifold is a critical component of your boat’s engine, directing exhaust gases away from the engine and expelling them safely through the exhaust system. Over time, wear and tear can cause the manifold to crack, corrode, or develop leaks, leading to decreased engine performance and potential long-term damage. In this article, we’ll explore the common causes of exhaust manifold damage and guide you through the proper steps for replacing them to ensure your engine operates smoothly and efficiently.
What Causes Exhaust Manifold Damage?
1. Corrosion from Saltwater Exposure
- One of the most common causes of exhaust manifold failure in marine engines is corrosion, particularly when the boat is used in saltwater environments. Saltwater is highly corrosive and can cause the manifold’s metal to degrade over time, especially if the cooling system is not functioning correctly or if proper maintenance is neglected.
- Corrosion typically starts inside the manifold where the water and exhaust
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- June 15, 2024
As a boat owner, one of the most common maintenance tasks you'll encounter is replacing worn-out or cracked bellows and hoses. These rubber components are crucial for connecting rigid piping and allowing movement, as well as for various fluid transfer applications on your boat. Over time, exposure to heat, sunlight, and the harsh marine environment can cause these parts to deteriorate, leading to potential leaks or failures.
Step 1: Identify and Locate
First, thoroughly inspect your boat's systems to identify the bellows or hoses that need replacement. Focus on areas like the exhaust system, engine cooling system, fuel lines, and plumbing connections. Look for signs of cracking, dry rot, or excessive wear. If you're unsure about which components need replacing, consult your boat's maintenance manual or seek advice from a professional marine technician.
Step 2: Gather Tools and Materials
Before starting the repair, ensure you have all necessary tools and materials. Basic hand tools such
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- March 29, 2024
For any boat owner, understanding the importance of anodes is crucial in ensuring the longevity and safety of your vessel. Anodes, often referred to as sacrificial anodes, play a vital role in protecting your boat from the destructive forces of galvanic corrosion. In this comprehensive guide, we will delve into the world of DIY anode maintenance and inspection, equipping you with the knowledge and skills needed to keep your boat in prime condition.
Understanding the Role of Anodes
Before we jump into maintenance and inspection, it's important to grasp why anodes are indispensable. Anodes are made from a more reactive metal compared to your boat's hull. When submerged in water, an electrochemical process occurs where the anode corrodes instead of your boat’s hull or other metal components. This process is what keeps your boat safe from corrosion.
Identifying When It’s Time for Inspection
Routine inspection of anodes is a crucial part of boat maintenance. The frequency of inspection can depend
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- April 05, 2021
Learn why anodes are so important for protecting your boat, and why you should be checking and replacing them often.
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- March 15, 2021
If you've got a smaller boat - say, under 20 feet long - chances are you experience a lot of difficulty getting that boat up to plane. Especially for boats with smaller horsepower engines, it can take a lot of running the engine at full power to get the boat on plane. Also, smaller boats tend to experience a lot of the bouncing or "porpoising" that makes a ride uncomfortable. Both of these problems can be solved with one easy solution and provide a much smoother ride and a better overall boating experience.
Trim Tabs Explained
Trim tabs are simple devices mounted to the transom of boats to make the ride smoother and to help the boat get on plane quicker. The traditional trim tabs are hydraulic and use hydraulic fluid to power the actuators that control the angle of the trim tabs. In recent years, electric trim tabs have also become popular and offer an efficient trim tab solution that requires less maintenance. The size of the trim tabs you need depends greatly on the
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- July 07, 2020
Cleaning the decks after a fun day on the water is exactly what the washdown pump was designed for. Whether you’re blasting away fish debris, mud from your anchor, spilled drinks, or bird droppings you need a washdown system that is equipped to get the job done in a flash.
PSI and GPM
PSI (Pounds Per Square Inch) and GPM (Gallons Per Minute) are both equally important when choosing a washdown system. PSI refers to the amount of pressure and GPM refers to the flow. The level of pressure (PSI) directly affects the system’s ability to strip dirt and grime from a surface and Flow (GPM) refers to the rinsing power or the system’s ability to carry the dirt away once stripped. Cleaning Units (CU) is the result of multiplying the PSI by the GPM…calculating and comparing the cleaning units will allow you to compare one unit to another.
As an example, a washdown system rated at 70 PSI and 5.2 GPM has 364 Cleaning Units.
Flow rate is generally more important to commercial applications as contractors
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- January 20, 2020
Proper Circuit Protection for Your Boat
Working on the electrical systems of your vessel can be a daunting and dangerous task. In fact, approximately 55% of all boating fires result from faulty electrical circuitry. In order to assist boat builders, owners and mechanics with a safe and reliable standard for onboard electrical systems, the ABYC (American Boat & Yacht Council) has dedicated significant effort in defining the correct methods for protecting a boat’s wiring and devices from overcurrent failures. They even offer certification courses focused on this topic.
Incorrect rating of overcurrent protection devices - such as fuses or circuit breakers - is common. In some installations, circuit protection is completely ignored or overlooked. Correct rating and installation of circuit protection is a requirement to prevent component failure or, worse yet, an electrical fire. Always calculate load to determine proper conductor size and required circuit protection.
The ABYC standards
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- December 10, 2019
MerCruiser has been a leading manufacturer of boat propulsion for decades, and they have designed and built many of the most popular stern drives in the boating industry. Since the 1950's, Mercury/MerCruiser has been a leading developer of stern drive technology. They introduced the Alpha series in 1983, which is still the most popular stern drive model being sold today. However, in the mid-1980's, MerCruiser introduced the Bravo series of stern drives. The Bravo stern drive stands apart from its Alpha predecessor for its robust and heavy-duty design and components, and its overall performance.
The Alpha series of stern drives are largely considered to be MerCruiser's value option of stern drive. It's more affordable than the Bravo series, produces minimal drag and is fairly resistant to corrosion compared to other stern drives. The Alpha's thru-propeller exhaust allows for quiet operation, and it's a fairly easy drive to maintain and repair. However, the performance
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- September 10, 2019
Stern drives may not be as popular on the water as they once were, but there are still thousands of them in use across the United States today. If your boat has a stern drive, then you'll want to add transom & stern drive service to your service checklist for the fall. The transom and drive are often neglected as a routine service checkpoint, but their upkeep is crucial to the performance and durability of your boat. Here are the four most important reasons to make sure you are thoroughly inspecting and servicing the transom and drive sections of your boat at least once a year (if not more).
1. Protect the bellows
The bellows are the rubber accordian-style components connecting the transom assembly to the stern drive. There is usually an exhaust bellows through which exhaust is funneled from the engine, and the u-joint or "drive" bellows, which protects the u-joint assembly connecting the mechanical components of the engine and the stern drive. Depending on the brand and model of engine,
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- August 13, 2019
One of the most irritating parts of owning a boat is dealing with odors escaping from your sanitation system. Typically, when odors find themselves on the outside of your sanitation hoses, it means it is time to replace them. Unfortunately, this can be a pretty dirty job. Some sanitation hoses on the market just aren't cutting it, with less-than-desirable permeation rates, inflexible designs and poor performance. To make your life a lot easier (and smelling better!), Marine Parts Source recommends the Raritan Saniflex Sanitation Hose.
10-Year Odor Permeation Warranty
It's a fact of life: all sanitation hose will break down and emit odors at some point. Your only hope is to prolong that point for as long as possible. The Raritan Saniflex hose has a 10-year odor permeation warranty. It's the best permeation warranty in the marine industry, and it helps to ensure you won't have to think about or smell this problem for a very long time.
The Incredible Flexible Hose
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