what if I change my shaft length???

[Dave Bell]

My old Merc has a shaft length of 20" and my boat measurement is also 20". <br />I'm looking to upgrade my outboard and am not sure if I have to stay with a 20" or if I find a 25" shaft length motor, will I be changing the performance characteristics of the boat by going to the longer shaft?<br />Thanks for any help.<br />Dave

 

[snapperbait]

Re: what if I change my shaft length???

You should stay with the 20" shaft...

 

[dmessy]

Re: what if I change my shaft length???

Ditto snapperbait, longer lower unit will increase drag and underwater clearance. If you'er buying a new motor over 25 HP, you may want to consider a long shaft IF you plan on keeping that motor to put on a new hull. Reason being is: most larger boats that require more than approx. 25 HP have the taller transomes.