got a seafox 25’ with a single 225 mercury efi, it tops out at about 26-28 mph when WOT, but only runs 4500 rpms, what can be done to get more topend speed, o and its already very sluggish out of the hole, i know its underpowered, can the prop be changed to get more topend and a little better out of the hole???
19’ Key West CC 140 Johnson
16’ War Eagle 40 Yami
12’ Alumacraft 1954 Johnson 5.5
VOTE DEMOCRATIC ITS EASIER THAN GETTING A JOB!
go to the next lower pitch prop it will help on both issues, not to mention saving your motor.
PS …I’m assuming the WOT is around 5000 on that motor??
26’ Twinvee
Twin Suzuki 175’s
www.creeksidemetalworks.com
not real sure but the rpm gauge goes up tp 7000 but im sure its not that high i think a safe rpm ramge would be high 5’s to mid 6’s
19’ Key West CC 140 Johnson
16’ War Eagle 40 Yami
12’ Alumacraft 1954 Johnson 5.5
VOTE DEMOCRATIC ITS EASIER THAN GETTING A JOB!
I would find out the rpm range 1st, then start changing props.
26’ Twinvee
Twin Suzuki 175’s
www.creeksidemetalworks.com
good call ill look at the manual stuff tonight
19’ Key West CC 140 Johnson
16’ War Eagle 40 Yami
12’ Alumacraft 1954 Johnson 5.5
VOTE DEMOCRATIC ITS EASIER THAN GETTING A JOB!
5700 is the rpm max!!!
19’ Key West CC 140 Johnson
16’ War Eagle 40 Yami
12’ Alumacraft 1954 Johnson 5.5
VOTE DEMOCRATIC ITS EASIER THAN GETTING A JOB!
Has it always run like that? Have you checked the compression on all cylinders? Are you sure the boat is not holding extra weight (water) somewhere? What size prop are you running now? You either need a lot less prop pitch than what you currently have or you need your motor worked on. 2" less pitch usually yields 200-400 more RPM’s, but that boat should still hit the upper 30’s to low 40’s with no problems.
Got a SeaFox 23’ walkaround with a Merc 200 running a 19 pitch and at WOT she is running right at 50mph. You either have a prop entirely to big or some catastrophic motor failure. I am guessing the prop is entirely too big. You need to be in a 17-19 pitch I’m guessing.Good luck.
Rog
“Double Trouble”
2001 Sea Fox 230
2001 Merc 200