How does it compare to the 2.4 liter 2 stroke? Any regrets at this stage? How does it do with a heavy load?

Nice performance numbers!

What do you figure is the fuel burn difference from the 175?

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.

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

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

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.

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!!! :)

Sent PM to Bigshrimpin
 

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

Terry - pm replied . . . Sent you 2 messages

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.

17P Package
 

Bigshrimpin- Thanks for the update. Was killing time yesterday and looked atSeaCraft on THT. Saw some responses from you, Snookerd and others which were a pretty good defense of SeaCraft, Moesly and Potter. Had forgotten that I found THT pretty irritating- almost like political argueing!

When I had my twin 115 Suzuki's I tested my performance with one motor. Now this is with stainless 22" props. My best speed with one motor was about 14 knots at 4400 with tabs all the way down. If I dropped down to a 18" I have now doubt speed would have been 25 mph or so at 6k.

Congrats for being a guinea pig. I'm sure MPG at best may be over 4.00.

A homeless guy in Bradenton had some kind of flybridge wellcraft or whatever IO. NO IB motor and he ran a 40hp Yamaha on a home made bracket. I swear he was on plane doing about 15 when I saw him.

All about propping.

Propping and motor height
 

Tim-Nice efficiency and one heck of a contribution by Mercury with that 150. That motor is awesome.

Running over 600 miles last 2 weeks in different sea conditions...it was amazing to trim the boat where the boat has the SC ride on top vs more of the harder landing due to more running surface on the water and improper running angle. I could watch the efficiency improve on the gauge. No spray when trimmed to ride on top! It had that woosh landing!

single 150 on 23
 

Capt Chuck is On Point - I rented a sailfish 22 with a 150 yammie 4 stroke while in the keys , would not get up on plane with 4 people, gear and full fuel . We had to have folks run to the bow to get up on plane.

We are such prop centric folks here.
I love prop testing.

Already tested this with full fuel tank, 4 adults over 200lbs with everyone behind the console. The boat jumps right up on plane. Just did a 120 mile trip a few days ago . . . with 3 guys 90 gallons, gear, full baitwell (35 gallons). Merc 150 makes max torque at 3000rpm vs. yamaha 150 which peaks at 5400rpm.

http://www.classicseacraft.com/commu...ad.php?t=28868

http://www.wellcraftv20.com/gallery/...3_17.sized.jpg

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.

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.

http://www.wellcraftv20.com/gallery/...0542.sized.jpg

I got out in some hurricane swells too, and the engine just chugs along happily.

http://www.wellcraftv20.com/gallery/.../fog.sized.jpg

Great news!

The cost and simplicity makes it a great choice. Thank you for sharing!

Next year I'll do more beaching too. 25 Seafari is going into the garage in 2 weeks for the winter.

http://www.wellcraftv20.com/gallery/...each.sized.jpg

I guess the motor has enough torque. :eek:

Big, I sent you a PM

reply sent!

This is a video I took running side by side FilthyOar coming back from seabass'n (forgive the shake)

https://www.youtube.com/watch?v=mDZ2qXld-ew

You can listen to the motor chug right along. This was 30mph cruise.

@bigshrimpin, love your setup...sounds like you are really getting a lot out of it.