This discussion may already be out there somewhere ... but, I havent found it.
I recently blew the power head on my 200 HPDI and had a new SHO hung on back of my Skeeter. I have went through the initial 2 hour break in period and have put another hour or so on it varying the speed hitting WOT just briefly. I have notice, at this point anyway, the SHO is 5 to 7 MPH slower than my HPDI was. Is this typical of the 4 stroke or should It run about the same at WOT as the HPDI? And will it increase speed after the full break in period?
has to be prop or set up. I went from a 250 OX-66 to a 250 SHO and gained speed. You will have to tinker around with props and jack plate height. The SHO is not an easy motor to prop, but when you get it propped right it will get it! I know mine likes to be ran high on the plate. The best props I have ran so far were...worked 27 T-1, re-pitched 29 T-1 down to a 28(winter), and a 27 TXP-OT4. I run a heavily loaded boat and average 76-77. Get through break in and get some hours on the motor first. After the first service, 20 hours, start working on your set up and top speed.