- Action: To Do List item A0087 - Install a gooseneck system with anti syphon connection as close to exhaust discharge fitting.
- Completed: 9 April 2018
- Cost: $348.68
The need and the reason to add a gooseneck component to the engine exhaust system are explained on To Do List item A0085 - Remove and delete the Chiu Tong ball valve. As part of the exhaust system modification, a new exhaust discharge thru hull with a flapper valve was installed on To Do List item A0086.
The gooseneck component selected was a Vetus NLPG75 Gooseneck Muffler ($215.99).
A Trident Marine 3-inch Hump Hose with 4 stainless steel T-bolt clamps ($49.99) was also ordered to connect the gooseneck muffler to the new exhaust discharge thru hull fitting. An additional ten Trident 720-3000L Series Stainless Steel T-Bolt Exhaust Hose Clamps ($82.70) were ordered to replace the existing exhaust hose corroded clamps and have spares available.
The Vetus NLPG75 Gooseneck Muffler was attached to the Trident Marine 3-inch hump hose and then the hump hose was connected to the new Centek 3-inch exhaust thru hull fitting. Each connection point had two stainless steel T-bolt clamps installed.
The 3-inch exhaust hose from the Foreshore Marine water-lock muffler, located at the bottom of the bildge, was connected with double stainless steel T-bolt clamps to the input side (top) of the Vetus NLPG75 Gooseneck Muffler. The Vetus installation manual stated, "Fit the gooseneck with the ty-raps supplied. The gooseneck has slots in which the ty-raps should be fitted." The gap between the gooseneck and the hull does not support the installation method recommended. Added to the To Do List item A0287, Fabricate wooden supports glassed to the hull to support gooseneck muffler.
At the Foreshore Marine water-lock muffler in the bottom of the bilge, two new stainless steel T-bolt clamps were installed on it's water inlet side (yellow arrow in picture below). The corroded clamps on the outlet side of the water-lock muffler, were extremely difficult to access and remove (red arrow in picture below).
After nearly two hours in the hot, steamy, closed-confines of the bilge, was finally successful in removing the two clamps.
The installation of the two new stainless steel T-bolt clamps was accomplished, after another hour had passed.
The last exhaust hose connection at the engine mixing elbow also had new clamps installed.
