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-   -   18' Superfisherman performance (http://www.classicseacraft.com/community/showthread.php?t=29230)

rickg 07-13-2018 01:31 PM

Out of curiosity what hole did they use on your engine mount?

jtharmo 07-13-2018 05:42 PM

Quote:

Originally Posted by Snookerd (Post 259046)
When Denny and I cleared the Lake Worth inlet at our Peanut Island gathering in my 88 18SF with a 130 2stroke Yamaha, he also made similar comments vs. The Restless Lady II (20 Seafari).

Hey, wait a minute...

Snookerd 07-14-2018 04:27 PM

Hey Bill-The Restless Lady II is one of the best all around platforms, but those center console boats really are a softer ride farther back. I hate to admit it, but I tweaked my knee crossing to the Bahamas last year in the Sceptre. I think having autopilot/helm and sitting farther back is a perfect way to ride in our Seafari/Sceptres. KMoose has it dialed in.....

Capt Terry 07-14-2018 05:35 PM

Thanks Snookerd-
Knew it, but forgot about a softer rider further aft, nearer the point of rotation. Like Bill, I initially kind of bristled about the 18' riding better than the Seafari. So I'd probably say sitting further aft is softer, but more wind blown spray! Years ago had a boss who came back from the Bahamas wearing his dive mask in his SeaCraft 20' CC.

Fr. Frank 07-15-2018 01:13 PM

Quote:

Originally Posted by RUSTYNTABATHA (Post 259036)
frank did you sell the 115 ?

Yes, I did. A couple of people got into a bidding war because of it's immaculate condition and I ended up getting $1800 for it, $305 over my initial asking price.
Another local pastor bought it to mount on the back of his 1977 V20 Wellcraft, which had an inline 6cyl 140 hp Mercury with a bad cylinder.

Fr. Frank 07-15-2018 01:14 PM

Quote:

Originally Posted by rickg (Post 259047)
Out of curiosity what hole did they use on your engine mount?

3rd hole mount. It's what I insisted upon. It's perfect.

Fr. Frank 07-15-2018 01:25 PM

Although it was sold to me as an '88, the HIN begins with SIC and ends in 87. Just got finished correcting the title to show it's an '87, not an '88.
The title even had the correct HIN on it, showing it was an '87, but in the year of manufacture box, it said "1988"
The fuel tank is 49 gallons, with 47 gallons useable. The original fuel tank was manufactured in November 1986, making this an early 1987 model. The late 1987 models by Tracker had a 30 gallon fuel tank instead of the 47 useable capacity of the '86/'87 models.

I'm in the process of digging out the foam to replace the fuel fill and vent hoses. The fuel fill hose is cracked right at the tank fill neck. :(

So console and left gunnel plate are off, fuel tank cover comes off today.

Jetiii 08-25-2018 05:19 PM

I have an 18 SF that is under reconstruction, what would you suggest I get for it hp wise, if the deck is being rebuilt and raised with Divynicell and the transom redone and raised for a 25” engine?

Fr. Frank 08-25-2018 10:51 PM

Quote:

Originally Posted by Jetiii (Post 259701)
I have an 18 SF that is under reconstruction, what would you suggest I get for it hp wise, if the deck is being rebuilt and raised with Divynicell and the transom redone and raised for a 25” engine?

If the cg doesn't matter to you, nor the ride in a chop at lower speeds, than go ahead and put an Etec 150 on it.

While weight and hp were major considerations for me, price was important too, as I'm the priest at a very small parish, and I make just $24K per year from the church, and have to supplement that by working part-time at West Marine.
I think that with this 90 Etec I just happened upon the what may be the ideal combination for me and for the boat.

Beaver 11-07-2018 07:06 AM

I agree with Fr Frank. Light is right. I have been running a 1992 Tohatsu 90on my 18 and I have been shocked at how well it pushes the boat. It planes quickly with two big guys in it and will run up to 32 mph. Average fuel consumption is 3 mpg. I’m sure the Etec 90 is doing better than that.

If I was going to put a new motor on my boat, I’d probably go with a Suzuki 90 or a Tohatsu TLDI 90.

Good luck

mikeyk 11-07-2018 11:46 PM

Tohatsu 90
 
I am currently running a 2013 Tohatsu 90 TLDI in my commercial skiff. It replaced a 2003 Nissan (aka Tohatsu) 70 TLDI which developed a top-end knock at around 3500 hrs. Both motors got worked hard and put away wet, but never experienced corrosion issues. No gearcase problems, changed impellers annually. The 90 however had FI air compressor problems at 2400 hrs. which I blame on human error on the assembly line - nut securing drive sprocket loosened and stripped threads on crankshaft. When the 90 wears out, I'll probably replace it with a 4 stroke. The cumulative cost of 2 stroke oil was pretty much the same as the additional price of finance charges on a new 4 stroke. These engines require a big battery to turn them over cold. A group 27 is barely adequate. They need about 1000 cranking amps.

Quote:

Originally Posted by Beaver (Post 261036)
I agree with Fr Frank. Light is right. I have been running a 1992 Tohatsu 90on my 18 and I have been shocked at how well it pushes the boat. It planes quickly with two big guys in it and will run up to 32 mph. Average fuel consumption is 3 mpg. IÂ’m sure the Etec 90 is doing better than that.

If I was going to put a new motor on my boat, IÂ’d probably go with a Suzuki 90 or a Tohatsu TLDI 90.

Good luck


Beaver 11-09-2018 06:16 AM

Wow. That’s good information. Thanks

bumpdraft 11-09-2018 03:41 PM

Quote:

Originally Posted by mikeyk (Post 261044)
I am currently running a 2013 Tohatsu 90 TLDI in my commercial skiff. It replaced a 2003 Nissan (aka Tohatsu) 70 TLDI which developed a top-end knock at around 3500 hrs. Both motors got worked hard and put away wet, but never experienced corrosion issues. No gearcase problems, changed impellers annually. The 90 however had FI air compressor problems at 2400 hrs. which I blame on human error on the assembly line - nut securing drive sprocket loosened and stripped threads on crankshaft. When the 90 wears out, I'll probably replace it with a 4 stroke. The cumulative cost of 2 stroke oil was pretty much the same as the additional price of finance charges on a new 4 stroke. These engines require a big battery to turn them over cold. A group 27 is barely adequate. They need about 1000 cranking amps.

I'm running a group 24 Interstate on my F225 Yamaha, 800cca, 1000 mca and it cranks just fine.

wildlifeone 05-22-2020 01:07 PM

Im currently running and 18 w 25" transom and df140 Suzuki. have the batteries forward in console and 30 gallon tank. 14x22 Suzuki prop getting 31mph at 4000. and 46mph at 5900.
a tad slow out the hole but not bad . weight on 140 isn't too bad . great set up



23 Seacraft df250

Fr. Frank 05-25-2020 06:53 PM

Took the boat on a long fishing trip, logging 129 nautical miles over a 9 hour day.
Leaving at 4:45 a.m. from Cinco Bayou in Ft. Walton, out Destin East Pass inlet then running east at about 4K rpms/25 kts to the Black Bart wreck off St Andrew's in Panama City. (Seas were almost completely flat, well under 1'}
Bottom fished for a while there for Mingo snapper.
Then on plane again for about 50 miles at 4400 rpms/28 kts before trolling the rest of the way at 5-6 kts out to the Edge 29 miles off Navarre where we caught a couple of out-of-season Gags in about 250' of water
Seas were now 1-2' so up on plane again at 4K to about 6 miles SW of East Pass, then trolled a couple of miles when we saw a big school of baitfish, pulling in a couple of medium sized dolphin (mahi) and an 8 lb Blackfin.
Then back on plane to the ramp, running about 24 kts this time, with a couple of minutes at about 90% throttle at 5K rpms 30-32 kts once back in the bay.

All told, 128.7 nm, and 22.4 gallons of gas burned, for an average of 5.75 NMPG, or 6.4 statute miles per gallon.

Man, I love this boat.

Old'sCool 05-26-2020 11:52 AM

Good trip and better fuel economy!

Beaver 05-28-2020 11:39 PM

I love mine too Frank. After seeing those numbers I think I’d love it more with an Etec 90. Over 6 mpg is just nuts.


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