Two other areas that water can be common from are the rub rail and the screws that are securing the bow railing….water will enter between the inner liner and the exterior of the hull
Never did max rpm….cruise 3300-3400 16-19 knots depending on sea conditions….
1.75 - 2 KNMPG…That’s total miles per trip divided by how many gallons we burned that trip…last Wednesday 114 nautical miles…burned 59 gallons… 1.9 KNMPG
I run the Acme 1427 four blade…been very pleased with it….we put 1400 hrs with this prop and it works great in all sea conditions
PCM 5.7 with Holley 600
First Offshore trip of the year….one in the fifty pound class and one well over a hundred lost at gaff…many giant Bonito kept us busy throughout the day.
We installed a Floscan 9000 Series on our Shamrock back in 2013 and it’s worked great all these years…typical tuna trip during the summer we’ll burn 60-70 gallons….when we fuel up after the trip it will be + or - half a gallon compared to the Floscan
My former west coast Shamrock…it’s a 1991 20’…basically the same design as your 22’….45gallon Offshore bait tank and 18 rocket launchers on the hard top.
Give Vince a call at Discount Inboard Marine...He should be able to hook you up with the right coil...Thats a Prestolite electronic ignition you're dealing with. A great ignition unfortunately not available any more.
I moved away from fuel gauges not always reliable and another place for a leak in the tank. I went with a fuel flow meter and have run hundreds of gallons of fuel through it with accurate results. On an average offshore trip we will burn 70 gallons of fuel. The meter wil be + or - a half...