OUTRAGE 18: Mounting height for Johnzuki 140-HP Four-stroke

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  OUTRAGE 18: Mounting height for Johnzuki 140-HP Four-stroke

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Author Topic:   OUTRAGE 18: Mounting height for Johnzuki 140-HP Four-stroke

alfred posted 01-10-2007 06:07 PM ET (US)
I just ordered a Johnson 140 4 stroke and I am looking for info on the mounting height, as the folks here have no experience with the 1986 Outrage 18, as I have the only one in Australia.
Buckda posted 01-10-2007 06:11 PM ET (US)
Assuming you have ordered a 25-inch-shaft engine (XL), I recommend mounting it at a height where the anti-ventilation plate is about 2 inches above the bottom of the transom when the motor is tilted down.
Peter posted 01-10-2007 06:43 PM ET (US)
Optimum anti-vent plate height relative to the keel depends upon the type of propeller being used. Typically, the motor height selected places the anti-vent plate about 1/2 inch above the bottom of the keel. I would start with the same anti-vent to keel distance relationship that use your current motor uses and go from there.
It seems at times here that there is some confusion when people refer to the anti-vent plate. The anti-vent plate is the plate on the gearcase immediately above and adjacent to the propeller. The one or more other plates that are above and usually forward of the anti-vent plates are anti-splash plates that prevent water from being redirected up the leg of the motor. The leading edge of these can typically be about 2 inches above the keel when the anti-vent plate is nearly even with the keel.
Another thing you can do is measure the distance between the part of the existing motor bracket that spans the transom and the top of the transom. It should be either 3/4 of an inch or 1.9-cm (one hole up) or 1-1/2 inches (2.8-cm) (two holes up). Under the assumption that the Suzuki bracket is the same, mount the Suzuki so it has the same spacing as the old motor.

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Author	Topic: OUTRAGE 18: Mounting height for Johnzuki 140-HP Four-stroke
alfred	posted 01-10-2007 06:07 PM ET (US) I just ordered a Johnson 140 4 stroke and I am looking for info on the mounting height, as the folks here have no experience with the 1986 Outrage 18, as I have the only one in Australia.
Buckda	posted 01-10-2007 06:11 PM ET (US) Assuming you have ordered a 25-inch-shaft engine (XL), I recommend mounting it at a height where the anti-ventilation plate is about 2 inches above the bottom of the transom when the motor is tilted down.
Peter	posted 01-10-2007 06:43 PM ET (US) Optimum anti-vent plate height relative to the keel depends upon the type of propeller being used. Typically, the motor height selected places the anti-vent plate about 1/2 inch above the bottom of the keel. I would start with the same anti-vent to keel distance relationship that use your current motor uses and go from there. It seems at times here that there is some confusion when people refer to the anti-vent plate. The anti-vent plate is the plate on the gearcase immediately above and adjacent to the propeller. The one or more other plates that are above and usually forward of the anti-vent plates are anti-splash plates that prevent water from being redirected up the leg of the motor. The leading edge of these can typically be about 2 inches above the keel when the anti-vent plate is nearly even with the keel. Another thing you can do is measure the distance between the part of the existing motor bracket that spans the transom and the top of the transom. It should be either 3/4 of an inch or 1.9-cm (one hole up) or 1-1/2 inches (2.8-cm) (two holes up). Under the assumption that the Suzuki bracket is the same, mount the Suzuki so it has the same spacing as the old motor.