PaulR 3 Posted November 19, 2011 Share Posted November 19, 2011 Happy to bow to your superior knowledge. I was much younger when it happened a long time ago, but it definately was scarey. Link to post Share on other sites
tuffyluffy 76 Posted November 19, 2011 Share Posted November 19, 2011 PaulR - I think you mean waterbox instead of the 2nd manifold, where the cooling water exits the engine and mixes with the exhaust fumes before going through the water box / antisyphon / swan neck loop to skin fitting / over the side. Of course……to much editing/cut and paste/etc. My point is the volume of water required to fill up the exhaust from cranking the engine that leads to water in the engine. Cheers I did exactly that with my Volvo 3 months ago, hence im having to replace rockers that got damaged. Dam lucky i didnt completely stuff the engine!! My leason for not replacing the glow plugs when i should have. Link to post Share on other sites
wheels 543 Posted November 19, 2011 Share Posted November 19, 2011 My leason for not replacing the glow plugs when i should have. Huh??? How??? Link to post Share on other sites
tuffyluffy 76 Posted November 19, 2011 Share Posted November 19, 2011 My leason for not replacing the glow plugs when i should have. Huh??? How??? Glow plugs werent warming the fuel, engine wasnt starting, hence i over cranked on the starter trying to start, and flooded the exhaust inlet and filled a cylinder with water. One of my more expensive screw ups! Link to post Share on other sites
wheels 543 Posted November 19, 2011 Share Posted November 19, 2011 Arrrrr, right. I get it now. I can be slow at times Link to post Share on other sites
Chewing Gum 17 Posted November 21, 2011 Share Posted November 21, 2011 Keep an eye on siphon break as they sometimes clog up. Toilet type works fine. Re exhaust, we filled our Yanmar in following sea, fortunately after removing injectors got it running again without doing any damage. I know of another boat with brand new yanmar with bent con rods from water ingress. After quite a lot of research I reconfigured our exhaust. Do the following: 1. Place waterlock muffler as close as possible to engine to reduce volume of water remaining in system . 2. Fit waterlock muffler as low as possible in bilge. 3. Fit waterlock muffler in line with the exhaust manifold fore and aft ie not on other side of centreline so that water is not thrown into engine when boat heels. 4. Fit loop in exhaust pipe after muffler as high as possible with a straight run to transom after loop if possible. I think the recommendation was for the muffler to be at least 200-300mm below the exhaust manifold I also had a new higher fibreglass elbow made to fit just after the waterlock muffler and take the exhaust pipe as high as possible under the cockpit These guys made the elbow for me POWERFLOW 2000 Ltd Phone: +64 9 527-6600 Fax: +64 9 527-1100 Mobile: +64 25 246-9999 E-mail: info@powerflow2000.co.nz Link to post Share on other sites
Bimini Babe 0 Posted November 21, 2011 Author Share Posted November 21, 2011 All good, just waiting on final bits of hose to connect up siphon break, getting the sparkies in on Wednesday (only specialists employed so far - the rest has been DIY), and should be sea-trialling by Wednesday avo. Learned a bunch about exhaust systems installing my own motor. Exhaust elbow went through 3 rounds of changes before finally getting it right! From original elbow, to high rise, to high rise with extra 90mm riser turned around nearly 180 degrees, to high rise exhaust elbow with extra 90mm riser turned BACK a few degrees to fit properly... Final elbow is now sporting battle scars from 3 different welders! Link to post Share on other sites
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