I am afraid I don't have a picture of the engine space.
The boat is a Corintian 42 trimaran
. So there is minimal heeling.
The old steel exhaust has a high loop, and where it starts down hill there is a saltwater inlet for cooling
water. this is where the old system changes to rubber hose.
They are telling me the engine has 5000 hours.
I will have a good look at the heat exchanger.
will start at the first of the year.
Thanks for all comments