SeeYa Ray
New Member
- Mar 15, 2023
- 26
- Boat Info
- 340 Sundancer
- Engines
- 7.4 Mercruiser
Hello Everyone - Im experiencing some water pooling in both engines in the exhaust manifold on my 2000 340 Sundancer w/ 7.4 MPI engines. This was a project boat that I bought last year with rebuilt engines, however the boat was inoperable and none of the "fixes" were on it at time of purchase. I read where many have had the dreaded reversion/inversion issue on their 99-01 340's with 7.4 MPI/330hp and 380hp/Horizon mercs. It looks like 3" spacers were added to the risor height to increase the degree of slope on the exhaust tubes and then resonators installed inside the exhaust tubes to help cancel out sound waves. I added 3" spacers, but still getting water in the Ex manifolds. Could someone who had this done, keeping the log style exhaust collector on their 340, give some input on how well this worked or didnt work for for them? Much appreciate it!
I also read that some had a water lift exhaust system was installed their boats as well.
Anyone?
Below a pic of the resonators
I also read that some had a water lift exhaust system was installed their boats as well.
Anyone?
Below a pic of the resonators