Twin 140 4Stroke Suzuki's

[gss036]

I run a 200hp carbed Merc and burn about 12gph @ 4200 RPM / 31-32 MPH. There is just too much junk in the water to run faster, plus dodging crab/shrimp pots and gill nets.
I was really hoping to improve the gas consumption on repowering. Maybe, down to about 8 GPH. Do you think that is possible? The 200 does just great for power. I can run about 42-43 wide open very seldom to that and only for short time.
I use a 15 hp Honda for trolling.
I looked into the Suzuki 250 because of the variable valve system. I just figured it would run with the Optimax's fuel figures..
I ran into a friend at the ramp yesterday and he was launching his 22 Whaler, just put on a new 225 Optimax. Has just 4 hours on it. It really sounded great. I'll keep in contact with him to see how he does with it.

[ September 10, 2003, 12:08 PM: Message edited by: Gary ]

[Briguy]

Gary,

I find it amazing that some of the guys on this board are having trouble with there new opti's. What I mean is they complain about top speed, hole shot, can't seem to find the right prop etc. You are getting 32mph at 4200 rpm's and the factory #'s for the new seacraft 23 with a 225 opti barely tops out at 35mph. What prop are you swinging?

[gss036]

Briguy, I don't know about the other guys on this board complaining. I just mentioned a friend had launched his Whaler w/a new 225 Optimax and I loved the sound of it.
I am running a 1989 Seacraft 23WA with a carbed Mercury 200 Hp. It has a 14 1/2" X 17" prop, Quicksilver part # 48-78118A40. Measued test speed by Mercury was @ 3795lbs 44.7 @ 5725rpm/
4245lbs 44.0mph@5700 rpm. It has trim tabs, hydralic steering and StingRay fin & 115 gal fuel tank. I still get about the same results, there has to really flat water w/ust a ripple and well trimmed to get 5700 rpm.
The info is from Mercury bulletin NO:88-128 1/13/88. [img]images/icons/grin.gif[/img]

[Captn C]

Capt. Brain,

I am running a pair of 1999 150hp Opti's on my 25' SeaCraft and I really like them. I am NOT a fan of Mercury though. If it wasn't for the fact that you can't buy a SeaCraft without one, I wouldn't have even given them a chance.

I just got it back from the shop (9-13-03) and I will say they expensive to repair. One of the fuel rails had an internal air leak-$800 for one fuel rail. The total bill was $1400!

Here is what I'm doing;
4000 rpm-1.8 mpg-30 knots
3000 rpm-2.5 mpg-24 knots
Max rpm 5000-just over 1 mpg-36 knots

It beats the pi$$ out of a buddy of mine's Glacier Bay. 1.2 mpg on smooth flat day.

[23yellow]

Doing away with the twin 140's on the back of the 23CC Seacraft. Final decision is the new 250 4Stroke by Suzuki. She should run well with that motor, plus, we wont have to worry about all that extra weight if we were to go with two motors. Looking forward to the boating season.

[gss036]

Trevor, I like your choice. Keep us posted.

[Serenity]

I've got twin 115 4 stroke Suzukis on my 23 Sceptre and I like it. We travel `10-30 miles out or more and we don't have any towing service to my knowledge here. Its a nice feeling that I can come back to port if I have a problem. Fuel efficiency is good. Weight on the transom isn't a problem for me so far.

Hope you are happy with your choice and great fishing to you!

[Briguy]

Good luck Trevor. You will be the first on the site with a Suzuki 250 4-stroke.

[23yellow]

Well fellows, we picked up the 23 Seacraft with the new 250 four stroke Suzuki up on Friday and it was in the water by Saturday morning. Cannot get over the difference between our old 225 two stroke and this new bad boy. Here are the numbers with the 16X20 prop.

198423CC Seacraft 250 Suzuki 4Stroke
70 gallons of fuel
3 people

3700-23knots-7gph
4200-26knots-9gph
4500-29.9knots-11gph
5000-34.5knots-12.5gph
5700-38knots-have to look at flow scan
6100-40.2knots-have to look at flow scan

In conclusion, the new 250 four stroke is much faster and fuel efficient than the 225 two stroke. To give you an idea, top speed with the 225 two stroke was 34.7 knots compared to 40.2 knots with the 250 four stroke. Oh yeah, hole shot is ten times better. That sucker has soooo much torque to go along with the 16X20 prop. Only good things to say about this new motor.

Trevor Hicks

[23yellow]

Just wanted to give a quick update after changing props this past weekend. Changed from a 16 X 20 to a 16 X 21.5. This was with 2 people and 80 gallons of fuel.

3700- 25 knots
4000- 27.5 knots
4200- 29 knots
4500- 32 knots
5000- 36 knots
5500- 39 knots
5950- 42.3 knots