Hi, Looking for feedback on how i propose to install a flush port on my outboard, to improve the approach.
Objective: To have a quick-flush port installed on the engine and, to be able to flush with the engine switched off.
Option: Install a port in the lower engine cowl, for reverse flushing.
Summary:
Using the existing telltale outlet from the block, adapt it to install a flush port adjacent to the telltale hole, where a hose can be attached and, the engine flushed through for reverse flushing (i.e. engine off and water flows from telltale through block and down the leg, instead of up the leg and through the block).
The job will involve adding a Y piece to the existing telltale pipe, leading a new length to the lower cowl, adjacent to the flush port. Drill a hole in the lower cowl. Insert a one-way hose attachment with 3/4" thread and secure with flanged nuts and washers to the cowl. Add a hose joiner on the 3/4" thread on the inside of the cowl, to join up the new section of pipe.
Graphical Form:
(attached)
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Any reasons why this wouldn't work / what would?
What size internal diameter is the existing tubing (part number 32-830756109)?
The alternative is that Mercury used to make a 'Coastal Flush Kit' for 93 onwards outboards, that fitted into the blanking plug for a coolant sensor on the top of the powerhead. So, i don't see why my proposed option wouldn't work but, this must be the backup option, that i route the house to there instead?
Objective: To have a quick-flush port installed on the engine and, to be able to flush with the engine switched off.
Option: Install a port in the lower engine cowl, for reverse flushing.
Summary:
Using the existing telltale outlet from the block, adapt it to install a flush port adjacent to the telltale hole, where a hose can be attached and, the engine flushed through for reverse flushing (i.e. engine off and water flows from telltale through block and down the leg, instead of up the leg and through the block).
The job will involve adding a Y piece to the existing telltale pipe, leading a new length to the lower cowl, adjacent to the flush port. Drill a hole in the lower cowl. Insert a one-way hose attachment with 3/4" thread and secure with flanged nuts and washers to the cowl. Add a hose joiner on the 3/4" thread on the inside of the cowl, to join up the new section of pipe.
Graphical Form:
(attached)
---------
Any reasons why this wouldn't work / what would?
What size internal diameter is the existing tubing (part number 32-830756109)?
The alternative is that Mercury used to make a 'Coastal Flush Kit' for 93 onwards outboards, that fitted into the blanking plug for a coolant sensor on the top of the powerhead. So, i don't see why my proposed option wouldn't work but, this must be the backup option, that i route the house to there instead?
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