twin engines on 23 center console

menhadenspecial · #1 02-01-2005, 10:58 AM

Is anyone running twins over 200 hp on a 23 center console. My mechanic is trying to convince me to run 200's instead of 225's or 250's because of the weight factor.

warthog5 · #2 02-01-2005, 11:18 AM

Most 200's are from the same block of the 225 and 250's. The weight is the same for all 3 in the same length.

menhadenspecial · #3 02-01-2005, 11:31 AM

The weights are the same for the Yamaha vmax line engines according to the yamaha web site, but the 200 hpdi is 466 pounds and the 250 hpdi is 540 pounds.

ScottM · #4 02-01-2005, 11:40 AM

In the HPDI series, Yam uses a 2.6L block for the 200 and a 3.3L for the 250/300, hence the weight difference. However, most other mfgs use the same block for their 200hp+ V6's, so weight would be the same across the range.

Vaguada · #5 02-01-2005, 05:32 PM

I have twin yamaha 200 saltwater in a 23 hull from 1985, no problems with water line and the top speed is 50 knots. this motor is the same weight as a 150

menhadenspecial · #6 02-02-2005, 09:30 AM

Are your motors on a bracket or the transom? I would have thought that twin 200's would have pushed this hull closer to 60. Are you running a center console? What kind of props are you turning?

Capt Chuck · #7 02-02-2005, 07:31 PM

Menhaden

Quote:

Is anyone running twins over 200 hp on a 23 center console

I'm confused here.Why do you want 500hp on a 23' boat? Are you going to catch more fish sooner than the other guy or do you have an unlimited pocketbook for the fuel bill. Maybe you can slice & dice dem manatees with counter roating viper props [img]/images/graemlins/confused.gif[/img]

BTW: Is your 23' rated for that HP? Will your insurance carrier in Tallahasse cover your boat. Mine won't here in Stuart. Hey Fellow-Ship, How about Broward County?

Finster · #8 02-02-2005, 09:41 PM

Hey Chuck, I found those engines for yah. I hope I didn't let the cat out of the bag. [img]/images/graemlins/confused.gif[/img] [img]/images/graemlins/wink.gif[/img]

I have a pair of 96 oil injected merc 275 hp motors.
They are the cosworth blocks.
I bought them off a 35' Intrepid in MI.
They had one stuck Cyl, (old gas) and needed to be gone thru.

I had my engine guy go thru them, and replace anything needed, and re-assemble. Pistons, rings, rods, seals bearings etc...the works.
We did the gearcases and the powerheads.
I have the mids, and cowls, essentially everything needed to reassemble.

They would be great for a stock aplication where real grunt is needed.
They pushed the Intrepid 52 mph, and that thing is huge...like 10' beam.

He repowered with new 250X's and lost 3mph.

$6,500 total for the pair.

I have alot of other stuff/engines and boats for sale also.

586-295-1212 C.

Scott · #9 02-02-2005, 10:33 PM

Menhaden ...what year is your boat ?? I think the max hp guideline for the older boats (Center Console) was 400 hp

Todays boats , which are heavier only recommend up to 300 hp

Why the need for such extreme speed ??? I think your mechanic is giving good advise

I know of a 23 with 2-225 on a bracket, restored 5-6 years ago. Besides costing a whole lot of cash for the restore and bracket / motors I've been told by the guy who did the work that the boat had too much engine , porpoises even though it had tabs and 450 hp was just unusable given our typical sea state. On top of which after the restoration the boat started to develop stress cracks from the hard running. He said it sure it moves !! but for what ??

Like Chuck said about insurance ...and its hard enough to get the insurance companies to insure an older hull ... wait till you tell them how much HP you got on the back(I guess the rules are different in every state)

FELLOW-SHIP · #10 02-03-2005, 09:42 AM

Ha Capt Chuck
I’m with you on this one. Personally I think the 23 is a great one engine boat with a 225 or 250 on the back transom mounted or on a bracket. If you want a second motor for long distance security sake and not really for additional power twin 140’s would be my first choice on a 30” deep flotation bracket with 25” shafts on the motors. The reason why I think this way is first off a 23’ boat is JUST a 23’ boat, “you can’t go that fast in this boat with out becoming air born” sometimes in 3’ Seas and for sure in 2-4’ Seas and in 3-5’ Seas you really need to run her about 32-34 rpm’s or so. The SeaCraft hull is a FANTASTIC HULL and capable of handling big water BUT a 23’ boat CAN’T CROSS OVER THE SECOND WAVE so when you come down from a wave you are hitting the next wave in exactly the wrong place NO 23’ BOAT CAN DO ANY BETTER. To handle crossing over to the next waves you need a boat approx 29’ to do that and those twin 225 or 250 are the correct choice. As for insurance forget it, insurance companies are not risk takes they are risks managers. They don’t insure any boat or person that wants to try to make 23’ boats fly just not what they do (not a profitable management exposure) they are not wanting to insure boats with more power that what they are rated for they have charts on individual manufacturers and have the power rating on each modal.
FellowShip [img]/images/graemlins/wink.gif[/img]