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I HAVE PERKINS RANGE 4 275 T I. AND TOP END IS 28.5 I HAVE 20/22 3/BLADE PROPS THE BOAT RUNS 22 KNOTS AT 22OO AND 24 KNOTS AT 2400 AND SO ON TO 2800.I HAVENT TRYED 4 BLADES. IS THIS THE SAME ENG AS YOURS I THINK SHAFT H P IS 250 THANKS KERRY

I'm taking my props to get tuned up and was wondering what other diesel owners were running. IE 4 blade vs 3 blade, cupping, Engine HP, Engine type, cruise rpms and speed, top end rpm and speed. My 250 hp Perkins give me a 23 Knot cruise at 2350 and 26Knot top end at 2650 on three blade props. Than...