yamaha 2000 z150txry?

[james1115]

Hello guys I have a question on my motor. I have a 2000 yamaha 150 txry on a 1978 mako 19b center console. Now my question is when I attempt to trim my motor down all the way at any speed over 10 knots the motor sprays up water so bad that it comes into the boat. I have to run it trimmed up a good amount for it not to do it. Do any of you know why this is happening ? thanks guys.<br />James

 

[rodbolt]

Re: yamaha 2000 z150txry?

sounds like ya got a 25" motor on a 20" transom<br />measure the transom from the top to the center of the V.<br /> if its not 25" you will have to build it up or run a jackplate

 

[james1115]

Re: yamaha 2000 z150txry?

I already have a jack plate and it is at its highest setting. I was thinking the same thing. thanks for the quick response. any other idea's that I could do.

 

[rodbolt]

Re: yamaha 2000 z150txry?

nope<br /> the ventalation plate needs to be 1" below to about 1/2" higher than the bottom of the hull. or water rides up the transom

 

[james1115]

Re: yamaha 2000 z150txry?

could I be mistaken about the jack plate being at its highest setting? with a jack plate on should this solve the problem? thanks

 

[james1115]

Re: yamaha 2000 z150txry?

also is it bad to be running it the way I am?

 

[james1115]

Re: yamaha 2000 z150txry?

ok i just did some research and my transom is 20in and my motor is 25in si I need to figure this out somehow. I love my motor and I love its performance. please help me with my options if any.<br />thank you so much for your help.<br />James

 

[rodbolt]

Re: yamaha 2000 z150txry?

one of the easiest ways is to have a local welding shop make a transom extesion with 3 1/4"-3/8ths" plates. the plates will be spaced the width of your current transom. the big plate should cover most the outside part. the lillte plate goes inside the splash well aand the tiny one will be welded across the top. the object is to move the top of the transom at the splashwell area up 5".its not real pretty but it works. the other option is a jack plate. the objective is to move the engines ventalation plate to about level with the bottom of the hull. with a jack plate you will get 5 to 8 inches of set back. make sure all your cables will move and still clear the hull with that much rise aand setback. if its sets back 5" then move the ventilation plate to about 1" above the hull. use a tape measure and a bit of math and maybe some pencil sketches before drilling.

 

[Ray Neudecker]

Re: yamaha 2000 z150txry?

You also need to remember that as you move the engine back with the plate, you also lower the motor about 40 percent of the setback in relation to the bottom of the boat. Bob's machine makes a plate that can be configured for a 2/12 inch set back. Mounting the motor high on the plate and raising it up may be the most economical way to accomplish your goal.

 

[james1115]

Re: yamaha 2000 z150txry?

alright thanks guys I appreciate your feedback. I have done some more investigating and I have figured out that my motor is mounted almost all the way up on my jack plate and my cavitation plate is about 1in to 11/2 in above my bottom of my transom. A guy I was talking to told me that my cavitaion plate was to high thats the reason I was getting the water coming in. I can lower my motor about 5 inches but he told me I wanted the cavitation plate to be about 1/2 in below the bottom of my boat is this correct? thanks guys