Single 150hp on 23ft Seacraft CC - Page 7

Bigshrimpin · #1 06-05-2017, 12:07 PM

I installed a square smartcraft system monitor gauge.
Fuel burn with 2 people/full tank and gear (raft, survival suits, fishing gear, 125lbs of ice) 4600rpm is 9gph @ 30/31mph. 4600 is the happy cruise in light chop. In slop it does nice 3800/4000 = 24/25 mph roughly 6.5gph. At low speeds this engine is more efficient than the 2.4L 175.
I'm super happy. This is perfect for my needs. If I had to carry bigger loads regularly or wanted more speed, then I would suggest a bigger engine.

captbone · #2 06-12-2017, 08:39 AM

Great numbers but 6.5mpg doesnt seem possible. Maybe 3.2mpg?

https://www.mercurymarine.com/en/us/...units=imperial

Bigshrimpin · #3 06-12-2017, 09:11 AM

thanks CB - that was a typo. 6.5 GPH is what is should be . . . made the correction. fuel burn and speed is nearly identical to the sailfish 220 pdf.

captbone · #4 06-12-2017, 10:05 AM

I am thrilled your set up works as expected. Nice package all around for simplicity, affordability, economy and performance. I would expect that your engine rigged out the door is 50% of what a 250hp Yamaha repower would cost.

DonV · #5 06-12-2017, 10:48 AM

Quote:

Originally Posted by captbone

I am thrilled your set up works as expected. Nice package all around for simplicity, affordability, economy and performance. I would expect that your engine rigged out the door is 50% of what a 250hp Yamaha repower would cost.

NO doubt!!!

Capt Terry · #6 06-12-2017, 12:23 PM

Bigshrimpin-
Hi. Sent you a PM as a followup to an old discussion.
Thanks

Bigshrimpin · #7 06-12-2017, 04:58 PM

Terry - pm replied . . . Sent you 2 messages

Bigshrimpin · #8 06-18-2017, 02:12 PM

Tried a powertech 15P four blade OFS and lost 3.5 - 4mph on the top end . . . could only turn 5250rpm @ 35.5mph. 15p enertia is WAY better. Terry the 17P is packaged up and will go out tomorrow.

captbone · #9 10-15-2017, 01:45 PM

Bump for update and thoughts now that you have more hours on it. Any regrets or anything that you would do differently?

Thanks for sharing.

Bigshrimpin · #10 10-15-2017, 09:43 PM

132 hours on the motor so far. I regret driving from Onset to Chatham and back (in 25+ knot wsw wind) and leaving 10 minutes before the bite turned on. I took a beating coming home across nantucket sound. I also towed a guy from Squibnocket to Quicks Hole (who didn't have seatow) had to cancel dinner reservations. The engine has been awesome and exceeded all my expectations.