How To Clean Cast Iron Exhaust Manifold

How to clean cast iron exhaust pipe and manifold.
How to clean cast iron exhaust manifold. You can buy the muratic acid at wal mart for about 3 00 per gallon. Spray the graphite in several thin layers allowing each coat to dry between 5 and 10 minutes before applying another. For exhaust manifolds there are a couple methods you can use. You will likely need 2 gallons. Im looking for a product that i can apply to make the pipe and manifold look better than the orange and black it is now.
How to clean out exhaust manifold. The paint typically dries to touch in about 20 minutes. Make sure you clean the entire exhaust manifold inside as well as the outside. Fully submerge the manifold and riser separately in full strength muratic acid for 90 minutes then rinse throughly. After the spray dries 20 40 minutes depending on the atmosphere and thickness of the paint the top surface will have very dark dull look.
Spray the bolts on the manifold heat shield usually found on recent cars with lubricating solvent and remove with socket wrench. When doing two light coats as recommended above you can apply the second coat after about 15 minutes. Clean the part thoroughly with a foaming engine cleaner. Apply some lacquer thinner and use a scrub brush to vigorously scrub it. The paint will dry to handle in about 2 hours.
When time is up fill a small container up with a sudsy solution of warm water and liquid dish detergent and pour it over the part slowly to rinse it. Then you would want to sandblast the manifold to remove any loose pieces or dirt the degreaser couldn t remove. Spray a liberal amount of cleaner onto the manifold then allow it to sit for 20 30 minutes. After the treatment paint it with a good. Sand blasting or media blasting can make cast iron look like new.
It also leaves the surface of the manifold lightly textured which. Once you are done thoroughly wipe the manifold and apply some dressing. Paint and many high heat coatings often don t last in this environment and when they start to chip peel and burn they often look even worse. Of course you would have to remove it from the car first. Professionals will have fancy chemicals to help assist them but a strong household degreaser can work just as well.