The kids need the boat for vacation on Sunday. So I of course did my best to delay until Saturday morning.. .
But the secondary cooling output lines are done!. They are tapped and threaded with 1/8NPT.
Luckily I had a spare 115 OMC head to look at to guide me to where to drill.
This is not an easy undertaking there’s limited clearance and you have to be sure to drill with pretty exacting placement.. because too far and your drill will only go in to the cylinder also it will help to have multiple NPT taps some with better tapers some with less taper.
Time for sea trials!
