170 Montauk Engine Mounting Height Change
Posted: Sat Aug 19, 2023 5:29 am
I have a 2005 170 Montauk 170 fitted with a Mercury 90-HP FOURSTROKE carburetor engine mounted one-hole-up and running a VENGEANCE 18-pitch propeller. This 170 MONTAUK has the optional stern seat—which I am considering removing—and a Yamaha 4-HP auxiliary engine, so the boat is stern heavy. Also, I usually run with two or three large people on board.
Q1: will raising the Mercury 90 FOURSTROKE engine on my 2005 170 MONTAUK to three-holes-up mounting height be too much height for the way my boat is rigged and used?
Give me recommendations for raising engine mounting height.
ASIDE: I have found only a couple of incidences of a discussion about engine mounting height for a 170 MONTAUK with further raising of the engine. One owner mounted the two-holes higher than original mounting, going to three-holes-up from lowest possible position; that owner reported good [outcomes], however that 170 MONTAUK had a foil appendage fitted to the engine lower unit anti-ventilation plate.
Q1: will raising the Mercury 90 FOURSTROKE engine on my 2005 170 MONTAUK to three-holes-up mounting height be too much height for the way my boat is rigged and used?
Give me recommendations for raising engine mounting height.
ASIDE: I have found only a couple of incidences of a discussion about engine mounting height for a 170 MONTAUK with further raising of the engine. One owner mounted the two-holes higher than original mounting, going to three-holes-up from lowest possible position; that owner reported good [outcomes], however that 170 MONTAUK had a foil appendage fitted to the engine lower unit anti-ventilation plate.