A cavitation plate is the adjustable metal plate that runs along the bottom of the transom on a V-drive. Some people call the flat metal plate on an outboard or outdrive a cavitation plate but the correct name is anti ventilation plate and cavitation and ventillation are not the same. It is similar in function to Trim Tabs. A cavitation plate is used to adjust the trim of a V-Drive and keep the nose on the water. Here is a link to a picture on PerformanceBoats dot com
In this picture of a V-drive, the cavitation plate is anodized red.
A cavitation plate is a permanent horizontal plate on the vertical shaft of the outboard right above the propeller. It sits just at the water level when the boat is up on plane (ie: flush with the bottom of the boat, for a planing style hull).It prevents 'cavitation' of the propeller ie: prevents air from the surface of the water being picked up by the action of the propeller. Cavitation drastically reduces a prop's effectiveness & efficiency; basically a cavitating prop is pushing some air rather that just water. Over-revving can also result.
On the lower leg of the motor, just where the gearcase bolts on, you will notice the anti-ventilation plate. Just above this plate, (the "plate" resembles a flat, horizontal fin), many motors have a second plate. You'll want to hang the engine where the bottom of the boat falls between these two plates. You can go a little lower than this, but not where the boat bottom falls below the bottom plate. This will likely cause cavitation and or engine overheat.
I can only assume that your are talking about the turbo charger, when you use the word "cavitates," however, I cannot remember the Lumina ever comming with one. Anyway, they make a plate, that goes in the turbo, to stop cavitation. I think they call it an anti-cavitation, plate.
A 20 ft long or less boat must have a capacity plate.
A 20 ft long or less boat must have a capacity plate.
The two types of cavitation are inertial cavitation and non-inertial cavitation. Inertial cavitation occurs when rapid changes in pressure cause the formation and collapse of bubbles. Non-inertial cavitation involves the stable growth and collapse of bubbles due to continuous low-pressure conditions.
The transom plate on a boat is located on the back of the boat. This in where the engine mounts to the boat and needs to be mounted at the correct height depending on whether the engine is a short or long shaft.
Emerson Cavitation Tunnel was created in 1949.
put engine in forward gear. remove bolts or nut from the bottom of cavitation plate, there is a nut on the front part on the plate to remove also . remove the zinc plate it is a Allan wench hole on top of cavitation plate. Pry the lower unit off with a couple of flat bars. the water pump is inside the plastic housing. reassembles. lots of parts in pump keep track of there order. this is a eazy job. make sure waterpick up is linedup. and shifter has no moved.
On the capacity plate
On the capacity plate
TRANSOM PLATE