A while back I posted on the rebuilding of the saltwater side of my heat exchangers. It was a big job so I decided to install a freshwater flush system to stop the build up of calcification and crud in my heat exchangers.
Basically I drilled the top of my Perko strainers to accept a 3/4 full flow elbow and then I mounted a sea cock for each engine behind the door in my transom. I flush the engines while they are running and without shutting the external seacocks so I don't run the risk of starving the impellers. Net result is I probably end up with a brackish flush because the dockside hose won't keep up with the demand of the diesel impellers. For an added benefit I squirt some dish detergent down the flush hose before I hook up the freshwater.
Basically I drilled the top of my Perko strainers to accept a 3/4 full flow elbow and then I mounted a sea cock for each engine behind the door in my transom. I flush the engines while they are running and without shutting the external seacocks so I don't run the risk of starving the impellers. Net result is I probably end up with a brackish flush because the dockside hose won't keep up with the demand of the diesel impellers. For an added benefit I squirt some dish detergent down the flush hose before I hook up the freshwater.
