Engine max weight on 23'

[KBR]

I have a 23' Seacraft Found the Serial # SXCRB618A888
can anyone make out these Numbers and letters?
I am guessing it is a 1988?
I need to repower it had a 225 Hp on it and I am wanting to go with a 250 Suzuki- I cannot find the nameplate for max HP can any one help?

[77SceptreOB]

Max HP was either 400 HP or 500 HP depending on the year. The 250 Zuki is a perfect match. Many 23' owners on the board have them and like them.

[TomParis]

Is your boat a center console, or does it have a cabin

[KBR]

It is a 23' center console

[kmoose]

Are you going with the df 250 or df 250AP? Either is a great motor as I had a df250 on my Tsunami for 10 years and was what I considered the perfect motor. On a CC I would bet you would see 44 knots without issue and a minimum of 2.5+ nautical mpg. If you are looking at the df250 AP, I would spend the couple of buck to get the 300AP. Same block and weight, just a few more ponies that isn't needed but fun to have.

[Fr. Frank]

If it's an '88, the maximum recommended HP was 400 hp. There is no legal maximum, as the hull is over 20' long. The heaviest single motor at that time was the 300HP PXCC V8 Evinrude Johnson at 580 lbs.

Twin '88 200 hp STLCC V6 Johnsons would have been the heaviest max recommended HP setup, weighing in at a total of 910 lbs of motors.

The 23' SF hull as modified in 1974 was designed for a max twin OB weight of just 600 lbs which was would have been twin 300 lb Johnson 135 hp outboards. (The 1971-74 Merc 1500 150hp inline 6 "Tower of Power" weighed only 275 lbs).

However, the hull was available back in '74 with a placarded max HP rating of 500 hp, which meant that it was rated for TRIPLE outboards of the highest HP available.

The hull design was obviously strong enough to carry them, and we once re-powered a '73 SF from triple 150 hp Mercury outboards which weighed 825 lbs together, to new twin '84 Johnson 235's which weighed about 800 lbs. (two of the 3 Mercs had one or more blown cylinders) The boat would NOT stay on plane below about 18 mph with the twin 235's without using the trim tabs.

Originally rigged with triple motors by Frank Brown's Marine, that boat is still the only non-racing SeaCraft I have ever seen with triple OB motors.

[nilesivan]

I am new here to this whole thing so help would be nice. So I have some ? about converting an I/O to an out board with a bracket. This is on a 74 sea craft 23

How Hard of a job

Thanks Ivan

[Fr. Frank]

Originally Posted by nilesivan

I am new here to this whole thing so help would be nice. So I have some ? about converting an I/O to an out board with a bracket. This is on a 74 sea craft 23

How Hard of a job

Thanks Ivan

That's enough to start a thread of your own.

[martin]

Originally Posted by nilesivan

I am new here to this whole thing so help would be nice. So I have some ? about converting an I/O to an out board with a bracket. This is on a 74 sea craft 23

How Hard of a job

Thanks Ivan

Check my , 23 1976 rebuild

[SeacraftErik]

Originally Posted by Fr. Frank

If it's an '88, the maximum recommended HP was 400 hp. There is no legal maximum, as the hull is over 20' long. The heaviest single motor at that time was the 300HP PXCC V8 Evinrude Johnson at 580 lbs.

Twin '88 200 hp STLCC V6 Johnsons would have been the heaviest max recommended HP setup, weighing in at a total of 910 lbs of motors.

The 23' SF hull as modified in 1974 was designed for a max twin OB weight of just 600 lbs which was would have been twin 300 lb Johnson 135 hp outboards. (The 1971-74 Merc 1500 150hp inline 6 "Tower of Power" weighed only 275 lbs).

However, the hull was available back in '74 with a placarded max HP rating of 500 hp, which meant that it was rated for TRIPLE outboards of the highest HP available.

The hull design was obviously strong enough to carry them, and we once re-powered a '73 SF from triple 150 hp Mercury outboards which weighed 825 lbs together, to new twin '84 Johnson 235's which weighed about 800 lbs. (two of the 3 Mercs had one or more blown cylinders) The boat would NOT stay on plane below about 18 mph with the twin 235's without using the trim tabs.

Originally rigged with triple motors by Frank Brown's Marine, that boat is still the only non-racing SeaCraft I have ever seen with triple OB motors.

Really useful information to have. Thank you!