Hot/dry exhaust installation
I need to undo the previous owner''s "improvement" to my engine exhaust system. He had replaced the original design (which included a very long hot/dry run) with a waterlift setup where the water is injected nearer to the exhaust riser. However, the engine location does not really permit this so I want to revert to the original design with the long hot/dry run. My question is this: Can the hot/dry portion be permitted to touch the hull at some points without risk of fire? It will of course be covered in lagging, but should additional protection be provided at those points where space constraints force close proximity of the hot/dry portion with the hull, or am I being a worry-wart? (The engine is an 11hp gas 2-cylinder, and the hot/dry exhaust has an outside diameter of 1 5/8".) Thanks for any advice.