need more power..

[sandollar1978]

How can I add more power to my 1978 55hp evinrude motor? The boat is a 1978 sandollar with a evinrude 55hp motor it goes very slow about 25mph how can I make it go faster?? any help would be great! Also where can I get cool stuff for this kind of boat thanks!!

 

[walleyehed]

Re: need more power..

Hard to answer without knowing exactly what your set-up is...length of boat, for one. First thing you might try is making sure the boats hull is very clean, and free of any growth or parasitic type drag. If it's good and clean, ya got a good test bed.<br /> Do you know your wide open throttle RPM as it is now?<br /> Position of engine as far as trim goes? Hydro trim/tilt?<br /> If you can answer most of these, we can get a base line of what you have and which direction to go.........

 

[roscoe]

Re: need more power..

First verify that the engine is operating properly.<br />Then look at the set up of the boat and motor, the trim setting, the motor height, etc.<br /><br />The engine should be able to reach 5500 rpm when at full throttle. So we need to know what rpm you are able to achieve.<br /><br />Check for spark on all cylinders.<br />Check the compression on all cylinders.<br /><br />Sorry, I don't know what a Sandollar is, who made it, how long it is, or how much it weighs. Neither the USCG or the NADA site have any info on it.

 

[sandollar1978]

Re: need more power..

Thanks I don't know anything about the rpm our who made the boat all I know it is 18 feet long and the company who made it Sandoller but thanks for helping.. I could send a picture of the boat our if you tell me how to post it I could post a picture.

 

[Solittle]

Re: need more power..

Dan - Without rpm at WOT we can't be of much help and a picture does not tell us what the motor is or is not doing. Generally if you need more power the only real solution is to buy a bigger motor. A 55 on a 18' boat is not going to be a speed demon no matter what you do to it.

 

[sandollar1978]

Re: need more power..

Thanks that would be great to have a bigger motor like what size would be good?

 

[walleyehed]

Re: need more power..

More info...gotta know max size allowed on your boat...........

 

[sandollar1978]

Re: need more power..

The label is missing but 1400 pounds for people and motor.