150 Mercury 4 stroke on a 23 seacraft

[Bigshrimpin]

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

This got me thinking : )

[flyingfrizzle]

Originally Posted by Bigshrimpin

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

This got me thinking : )

Those #'s are impressive for a boat that large

[thehermit]

Originally Posted by Bigshrimpin

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

This got me thinking : )

That you should strap 2 of these on a Shrimpco bracket ?

[McGillicuddy]

Originally Posted by DonV

Yeah....no kidding!!!!

Besides the performance numbers are with a 15 pitch prop which will really limit high speed. 38 mph at WOT is nothing to brag about. I like the performance curve graph, as you increase the RPMs by 600 @ 3000 to 3600 your MPG goes up. I wish my truck would do that as I increase the RPMs.

At that point the hull has just gotten on plane thus the improved fuel economy. I'd like to see more motors tested on the sailfish hulls, closer to home... Tired of everybody testing on carolina skiffs and 19 foot tinnies.

[Bigshrimpin]

My 23 has a top speed of approx 39mph (+/- 2mph with load/conditions) . . . 38.6 isn't too much of a loss. The conditions usually dictate your cruising speed anyways, so 95% of the time that is enough speed. The Merc 150 3.0L has almost as much displacement as the first generation yamaha 4 strokes 200 - 250hp (3.3L) and Honda 225/250hp (3.5L). It's only 4 cylinders, but it sure seems like it'll do the job.

[McGillicuddy]

Big, are you still running that 3L 250 efi? or did you go back to the old school lightweights?

[doodlebug]

Does anyone notice that mercury has removed the optimax
Test data for the 135 thru 175 2.5L engines.
The 21 Seacraft with a 150 opti had a 5 mpg cruise and
A top end in the low 40's looks like mercury did not want
People to compare old with new.

[RidgeRunner]

Redoing their website

[Bigshrimpin]

Originally Posted by McGillicuddy

Big, are you still running that 3L 250 efi? or did you go back to the old school lightweights?

Running the old 2.4's . . . saving the 250EFI for the 25.

[Sullivan21]

Those are impressive figures! 3.5 MPG is unreal! My hull runs about 45mph but i rarely get up over 40 so who cares, run at 26mph sipping fuel, I have heard all good things about the new Merc 150 4 stroke too!