Vector T rim & Tilt, and Prop

Hi. I have recently purchased a 1974 Hydrostream Vector with a 1977 Mercury 150HP engine, I think it is a 1500, but I can't find a serial number. Anyway, the engine runs perfectly, I think it has been rebuilt recently. I have several questions. Can I put a power trim and tilt on this setup? If so which model or does it matter? What kind of prop should I use? The one that is on it is brass and there are no markings on it. I am not sure what RPM's it is turning but the max speed I can get is about 45MPH or so. Should the motor be raised or lowered? I have read a lot of the questions on this site and it seems that a lot of the performance has to do with the positioning of the motor in relation to the bottom of the boat. I would like to get this boat set up right. It is in really good condition. It was made in January of 1974. Any help would be appreciated. Let me know if you need any more info. Thank You.




Your boat is pretty easy to set up. The Vector runs good with the motor you have right on the transom. Howard designed it that way. Any trim for the inline 4 cylinder or the inline 6 cylinder will work. A good marine dealer will trip over them from time to time. Or ask someone on the board if they have one for sale. Start with a 21 or 22 pitch prop like a laser 2 or some three blade for the Merc. This should add 20 mph to your speed. After you get used to that there is a little more left to be had. 

                                   Get a trim first, and then the rest will work




Please submit whatever questions you have to  All questions and answers selected will be displayed on this page as they come in.  Note: though all boaters are welcome, priority may be given to I.H.R. members.  Randy can not be held responsible for any advice given.  Though his information and expertise is second to none, he has no control over what you do with your boat.  It is up to you to boat safely and act responsibly, and his advice is only to be used as a guidance for your high performance boat/motor of which you are the one responsible for the risks involved.

Mark C.


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