How to clean marine exhaust manifolds

The sea water channels in the exhaust manifold were clogged real bad and the soak really took the rust out of the inside. How to clean out exhaust manifold.

Tighten the capscrews in the sequence shown.

How to clean marine exhaust manifolds. One popular method to help clean up an old dirty exhaust manifold is using an acid bath. Acid bath - An acid bath should be able to remove many of the problems that are present in your marine exhaust manifold. This is also very simple because it is a passive cleaning method that.

How do you clean a marine exhaust manifold. One popular method to help clean up an old dirty exhaust manifold is using an acid bath. Acid bath An acid bath should be able to remove many of the problems that are present in your marine exhaust manifold.

How to clean out exhaust manifold. Fully submerge the manifold and riser separately in full strength muratic acid for 90 minutes then rinse throughly. You can buy the muratic acid at Wal Mart for about 300 per gallon.

You will likely need 2 gallons. Be very careful with this chemical it is dangerous read the label on the container. Spray some solvent on the bolts which are on manifold heat shield and then remove them.

Then remove bolts from the manifold. You would need to use a socket wrench to remove these bolts as they are tightly screwed and difficult to remove even after applying a solvent. Now detach exhaust manifold from vehicle.

Step 2 - Clean and Re-install. I have just removed my engine 1974 Merc 888 - Ford 302 V8 to rebuild the motor mounts and clean paint the bilge. While it is out I plan on taking the exhaust manifolds off and cleaning them.

The risers were taken off before the engine came out - some rust inside but plenty of meat left on the walls and passages appear clear ran water through. 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. The sea water channels in the exhaust manifold were clogged real bad and the soak really took the rust out of the inside.

I used the same thing from Lowes that is used to clean concrete. Use heavy rubber gloves goggles and long sleeves etc. I splashed some on me when I was lowering one end into the bucket and it is not a good feeling.

Align the manifold and gaskets using guide studs. Install spacers and new capscrews hand tight. Remove guide studs and install remaining spacers and capscrews hand tight.

Tighten the capscrews in the sequence shown. Learn how to remove stuck exhaust manifold bolts or studs. Wades shows you a little-known trick to help loosen up some of those old seized and corroded exha.

Two methods can be used to check for water in the Marine Exhaust Manifolds. The simplest and least timeconsuming way is the exhaust elbow removal method. With this method however it is difficult to accurately determine the amount of water in the manifolds.

Marine Exhaust KEEL COOLING. Keel Cooling is often installed incorrectly and can cause manifolds to crack internally from excessive heat. Do not install exhaust manifolds into keel cooled systems that rely solely on the water circulation pumps with a small diameter pipe for its circulation.

How to Remove and Replace Manifolds RisersElbows on a 50 MPI MerCuiser 260Hp. Removal ReplacingTo watch the video with subtitles visit our website htt. If playback doesnt begin shortly try restarting your device.

Videos you watch may be added to the TVs watch history and influence TV recommendations. To avoid this cancel and sign in to. Drain the water from your engines risers and manifolds in order to perform a visual inspection.

Unclamp the exhaust hoses. Remove the bolts securing the risers andor elbows and look inside. Poke n Look Heavy corrosion or material dislodged by reaming with an.

One popular method to help clean up an old dirty exhaust manifold is using an acid bath. Acid bath - An acid bath should be able to remove many of the problems that are present in your marine exhaust manifold. This is also very simple because it is a.

Remove inspect and replace cooling system components as recommended by the engine manufacturer. Usually exhaust manifolds and risers are replaced every 3-7 years and heat exchangers are inspected every 3-5 years. Keep a log of when the exhaust manifolds and risers were done.

Keep a log of when the heat exchangers and oil coolers were done. Get yourself a paper and pencil and watch this amazing episode dealing with replacing corroded exhaust manifolds and risers on your engines. Remove Bolts for Boat Exhaust Manifold.

Unlike a cars engine you have fairly easy access to the boat exhaust manifold. Once the engine compartment is open you will see the exhaust ports on the side. All that is needed is to remove a few bolts on the exhaust manifold itself to remove it.

Use a wrench to loosen the bolts. 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. Patience is key this set almost saw the recycle bin a couple of times but at 120000 for a new set repairing them was our only option.

We start by removing the manifolds and risers from the engine. Remove all water hose connections mounting bolts and loosen the exhaust hose clamps.