Cummins Marine Diesel Repower Specialists › Forums › General Discussion › New Diesel Engine owner (sorry, it's a yanmar) › Reply To: New Diesel Engine owner (sorry, it's a yanmar)
Rob Schepis
Engines: 6BTA 5.9 330's - "Seaboard Style"
Location: Long Island, NY
Country: USA
There are 2 issues – spillover height over the LWL and the “flatness” of your exhaust coming off of the mixing elbow.
The Albin 28TE engine box boats have a spillover that is problematic on the Cummins but seem to just squeak by on the Yanmars. With the flushdeck boat the engine is a tad lower so your spillover is likely an issue but I’ve never measured it. Of course, cutting the deck and putting a tall dry riser is always the theoretical but seldom practical solution. You seem to have a a few inches where you could rotate the 2 elbows and gain “some” height.
By rotating the elbows and using that extra height you have there you will be able to get “some” more downward pitch coming off of the mixer. I put only a 5 degree list on that photo and now it’s an uphill run.. I know where you are and how you use the boat – if she’s only listing 5 degrees those are ideal conditions!