84 johnson115hp

dhansell

Recruit
Joined
Mar 11, 2011
Messages
3
Just wanted to know if anyone had any idea about how fast my 84 115hp johnson should push my 84 glastron carlson cvx 16. I am thinking something is wrong with the motor because i can only get about 35 mph. But i have seen them with 90hp and do 45+.

thanks
Dale
 

ezmobee

Supreme Mariner
Joined
Mar 26, 2007
Messages
23,767
Re: 84 johnson115hp

On a 16' I would think 40+. Is your hull waterlogged by chance?

Your WOT RPMs will be crucial to know in troubleshooting this.
 

dhansell

Recruit
Joined
Mar 11, 2011
Messages
3
Re: 84 johnson115hp

Im not sure if it is water logged are not but it was sitting in the rain for a little.. RPM was about 42
 

SparkieBoat

Captain
Joined
Aug 17, 2009
Messages
3,643
Re: 84 johnson115hp

you need to weigh your boat, also a rough bottom can make a real difference. that is way to low RPMs something is not right...
 
D

DJ

Guest
Re: 84 johnson115hp

4200 RPM shows:

1. A severely heavy boat.

2. Mis propped. Should turn at least 5500.

3. Sick engine, not running on all four. Compression test is in order-#1.
 

dhansell

Recruit
Joined
Mar 11, 2011
Messages
3
Re: 84 johnson115hp

Ok i am going to get do the compression test do you know were about it should be.
 
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