raising motor

[dpfrost]

To all that can help.<br /><br />i have a 17' cajun with 150merc. The motor is mounted all the way. Will i gain any speed by moving the motor up a few holes? What are the affects if i do move it up? Any good or any bad affects?

 

[WillyBWright]

Re: raising motor

Potential of more speed due to reduced drag.<br />You might have to change to a 4 or 5 blade prop.<br />You'll blow-out easier in turns.<br />You'll suck air easier in rough water.<br />Go too high and you risk burning out your water pump and overheating the motor. (Upper water intake holes can be plugged off to prevent that.)<br />You should consider getting a water pressure gauge.

 

[walleyehed]

Re: raising motor

If the engine is mounted directly to the transom-no jackplate-I don't think you'll get it high enough (with a good prop) to cause any problems.<br />It should be raised 1 hole at a time and test..if it's on the transom, your best results may be in the third set of holes down, just have to test and see.

 

[dpfrost]

Re: raising motor

thanks guys for the advise, will try moving and see what that does. I have a pressure gauge on the dash so i will watch that closly to make sure i am getting enough pressure. As far as blowing out of the water i think the ss 19p will still get me out and going, plus i am planning on drilling some holes in it to help even more. Kept you posted incase i need more help.

 

[walleyehed]

Re: raising motor

Careful on hole-size...you can make it blow out bad if you get'em too big...start small, like 1/8".