Re: Twin 140 4Stroke Suzuki's
Trevor, Let me fully answer your question as I am the only one with a 23 with twin Suzuki 115 4 strokes on the site. Getting out of the hole with the 115's is no problem. I had 8 people on my boat 4th of july and she just came up beautifully. With 3 people on board she cruises at 4000 rpm's at 25.5 knots. At that speed she burns 10.5 gph for a net of 2.9 mpg. Efficiency is maintained from 3500 to 4500 rpm's at the same mpg so I don't suffer if I want to kick it up to 29 kts or so. At WOT I am running 5950 rpm's trimmed high and my speed is 37 kts, maybe 38 1/2 with the wind. I run 23 inch Suzuki aluminum props.
As you all know I put a bracket on this year and went with a Mattson & Co flotation bracket with a swim platform. The chamber is 42 inches wide. The boat sits well in the water but she's no self bailer. In the "If I had to do it again" department I'd have them fabricate the chamber so it was 10 inches wider to offer about 20% better flotation. I also carry 150 gallons of fuel so if I replace it with a 100 gallon tank I may gain an inch or 2 at the waterline. I would not recommend going with twin 4 strokes on the transom. In any kind of following sea, you will get water coming over the back.
The bracket makes the boat really ride so much better. It feels bigger, more solid and the ass end stays put in the water where without a bracket in 4 ft seas's I was coming completely out of the water. The full transom also offers your passengers extra stern room for a smooth ride sitting in a deck chair.
Finally I have a 1999 Suzuki 4 stroke on my flats boat. There is absolutely no corrosion. Those 140's should add 3-4 kts at top end and maybe 1-2 kts at cruise so don't plan on there being much if any extra fuel burn.
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Capt. Brian
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