Quote:
Originally Posted by Highway12
What is a snail elbow?
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An exhaust riser off the turbo of the engine.
The key problem with inboard engines is the tendency for saltwaterto enter the engine/turbo coming INTO the exhaust. While the engine is off, it is very common in poorly designed exhaust systems for a "slug" of saltwater to come up the exhaust tube and into the engine. To prevent this, you need 2 things: 1) a surge tube and 2) a riser that has it's lowest point at least 12" above the waterline.