jlaskowsky73· Sea's The Day Charters
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Discussion Starter · #1 ·
G'Day! I bought a 1980 PY26 last July and have been slowly bringing her back to life. I had the freshly rebuilt Yanmar YSM8 placed back in the engine compartment and the mechanic and I had a meeting this morning. He told me he wants to move the exhaust mixing elbow 10-12 inches above where it sits now because the previous owner had the problem of salt water siphoning back into the cylinder head 3 times in the last few years. He recommended I do a little research to see if this was a problem/flaw in the boat design or if it was the previous owner. The last setup was 1 3/8 exhaust hose all the way. I have changed the muffler to 1 3/4 with 1 1/2 from the mixing elbow with an increase to 1 3/4 to mate to the muffler. Out of the muffler I used a reducer to 1 3/8 to mate to the exhaust port. Any info would be helpful.