How often should risers and manifolds be replaced

The riser which is shaped like an inverted U is sometimes located at. Exhaust manifolds and risers are large metal castings that carry hot exhaust gasses away from the engine block on inboard engines.

I remove mine every 2-3 years.

How often should risers and manifolds be replaced. How often should risers and manifolds be replaced. Many exhaust manifolds can last you between three and five years but factors such as the type of water you are sailing in will make a difference. It is best to start looking at the exhaust risers and manifolds once they are two years old.

Thereof how often should risers and manifolds be replaced. As a general rule you should start inspecting your risers and manifolds thoroughly after having used them for two years. Many exhaust manifolds can last you between three and five years but factors such as the type of water you are sailing in will make a difference.

People Also Asked How often should risers and manifolds be replaced. As a general rule you should start inspecting your risers and manifolds thoroughly after having used them for two years. Many exhaust manifolds can last you between three and five years but factors such as the type of water you are sailing in will make a difference.

Herein how often should risers and manifolds be replaced. As a general rule you should start inspecting your risers and manifolds thoroughly after having used them for two years. Many exhaust manifolds can last you between three and five years but factors such as.

When to replace manifolds and risers. Spot check the temps with an IR sensor and sound with a ballpean hammer for starters. But you really need to remove them to take a look.

I remove mine every 2-3 years. IMHO if youre going to replace one thing just on the basis of time you should replace to whole boat as the rest of the boat is not new either. How often do you change manifolds and risers.

Hear this out loudPauseThe general consensus on raw water-cooled manifolds and risers is that they will last upwards of 6-8 years. Keep in mind that most if not all engine manufacturers do not put out a service bulletin on. Also know how often should risers and manifolds be replaced.

As a general rule you should start inspecting your risers and manifolds thoroughly after having used them for two years. Many exhaust manifolds can last you between three and five years but factors such as the type of water you are sailing in will make a difference. Check risers and elbows starting at two years and annually thereafter if the boat is used in salt water.

Even with a closed cooling system the risers are raw-water cooled. Risers usually fail before manifolds do. Risers and manifolds used in fresh water have an almost indefinite life.

As a general rule you should start inspecting your risers and manifolds thoroughly after having used them for two years. Many exhaust manifolds can last you between three and five years but factors such as the type of water you are sailing in will make a difference. In reality boats operating in Florida may get only two or three years out of risers and not much more from manifolds while those in Maine may get five or six years.

Furthermore keep in mind that the riser to manifold gasket not the riser itself is what usually leaks and causes the problem. Furthermore the risers are significantly more likely to leak than the manifolds are and that that if the riser to manifold gasket is maintained and checkedreplaced regularly the manifolds hardly ever fail. The manifolds and risers were new in 2009 and here they are going on 8 seasons.

The temperature stays at around 160 based on both the upper and lower helm gauges. I do appear to be loosing a small amount of coolant about an inch down each day trip based on what my overflow bottle is showing me reading the next day after the engine has fully. For boats used in a salt water environment the manifolds risers should be checked regularly as part of your maintenance program.

How often will depend on where you keep your boat boats in warm sea water in southern States will likey need replacement more often than those in cooler seas further north. Ok the risers should be replaced every 350-400 hours of use or 35-4 years of age. The manifolds 500-600 hours of use or 5-6 years of age.

So the manifolds are due and the risers are over due if they havent been replaced already. Also asked how often should risers and manifolds be replaced. As a general rule you should start inspecting your risers and manifolds thoroughly after having used them for two years.

Many exhaust manifolds can last you between three and five years but factors such as the type of water you are sailing in will make a difference. Wet joint manifolds and risers need the gasket replaced every second year and typically dont last as long often failing at the gasket surfaces. Mercruiser wet joint manifolds should be supersededupgraded to the newer dry joint style when due for replacement.

Exhaust manifolds and risers are large metal castings that carry hot exhaust gases away from the engine on inboard engines. Sometimes the riser slopes down from the end of the manifold if the engine sits high enough above the waterline in which case its often called an elbow. When to replace manifoldsrisers-gctid358645.

My manifoldsrisers are 10 years old. Its been salt water used with a flush after most cruises. Just go ahead and replace them.

Probably the safest thing but a couple of boat units and a lot of labor. Inspect with a borescopefiber optics type thing. Keeping the Water and Gas Separated.

Exhaust manifolds and risers are large metal castings that carry hot exhaust gasses away from the engine block on inboard engines. All V-8 engines for instance have a separate exhaust manifold along the side of each cylinder bank. The riser which is shaped like an inverted U is sometimes located at.

We had new exhaust manifolds and risers fitted when we replaced the engine in March 2013. So they are coming up to two years old. I know if they fail its pretty catastrophic its what happened to the previous owner and why we bought the boat with a broken engine.

So how often should. A faulty manifold must be taken off and inspected and replaced with new manifold. Its a large and complex part so that can be expensive.

So can labor as the exhaust manifold is connected to the engine which could make it quite difficult to access. Unfortunately the exhaust manifold is an absolutely critical component to your vehicle. I suspect it still has the original manifold and riser elbow.

How often should they be replaced. Also was wondering what is the purpose of the flapper where exactly is it located and how often should it be replaced. Don S Honorary Moderator Emeritus.

Joined Aug 31 2004 Messages 62334. Now on average if the engine is not flushed very often the risersmanifolds will last 3 to 5 years in saltwater before they rot out and allow water to get into the engine. I work and boat on the Gulf of Mexico and we have some pretty salty water here.

3 to 4 years is on average what they last here.