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-   -   23ft Seacraft with a single 175hp Suzuki (http://www.classicseacraft.com/community/showthread.php?t=23154)

captbone 09-11-2011 02:03 PM

23ft Seacraft with a single 175hp Suzuki
 
There is a guy on THT that just repowered his 23ft Seacraft with a single 175hp Four Stroke Suzuki (4 cylinder) and get 28mph cruise and 39mph top end.

Pretty nice numbers. Any one every have a 175 or even a 150hp on a 23ft Seacraft.

77SceptreOB 09-11-2011 07:10 PM

Re: 23ft Seacraft with a single 175hp Suzuki
 
I think 175hp is too small. I doubt he truely gets those perf. numbers. I get those #s with a lighter 2-stroke 225hp.

ScottM 09-12-2011 07:53 AM

Re: 23ft Seacraft with a single 175hp Suzuki
 
Quote:

I think 175hp is too small. I doubt he truely gets those perf. numbers. I get those #s with a lighter 2-stroke 225hp.

I was thinking the same thing. If it's a CC then it will perform slightly better than a Sceptre, but those numbers do seem a bit high.

workinpr0gress 09-12-2011 01:49 PM

Re: 23ft Seacraft with a single 175hp Suzuki
 
Quote:

There is a guy on THT that just repowered his 23ft Seacraft with a single 175hp Four Stroke Suzuki (4 cylinder) and get 28mph cruise and 39mph top end.

Wonder what rpms, prop? Seems a little fast, maybe that's including going with the tide or, wind or, running on fumes or, through a bottleneck. Or all the above. ;)

eggsuckindog 09-12-2011 02:22 PM

Re: 23ft Seacraft with a single 175hp Suzuki
 
BS - those are very close to mine with a 200 merc on a 20

Bigshrimpin 09-26-2011 09:05 AM

Quote:

Originally Posted by captbone (Post 193874)
There is a guy on THT that just repowered his 23ft Seacraft with a single 175hp Four Stroke Suzuki (4 cylinder) and get 28mph cruise and 39mph top end.

Pretty nice numbers. Any one every have a 175 or even a 150hp on a 23ft Seacraft.

http://www.wellcraftv20.com/gallery/...150_Medium.jpg
http://www.wellcraftv20.com/gallery/...153_Medium.jpg

I never would have believed it until this past weekend, but I now actually believe those numbers. I have been messing around with my pile of spare motors. Currently I have a 1979 V200 Mercury 2.4L powerhead on a 2001 200hp mid section/lower unit (This is equivalent to a mid 80's 2.4L 175). Propped right and the motor seems to have plenty of power to push the 23 . . . the numbers above are with a full tank 70 gallons, HUGE 400+lb pilot house, 2 adults, 25hp Kicker, tons of gear.

Bigshrimpin 09-26-2011 09:17 AM

Quote:

Originally Posted by eggsuckindog (Post 193906)
BS - those are very close to mine with a 200 merc on a 20

Eggs . . . I had this same motor on my 18 . . . believe it or not the V200 on my 18 was only 44/45mph with just me onboard and 30 gallons of fuel using a mirage plus 17P. I'll put money that I can top 40mph when I put on the 15P mirage and shed one body in the 23.

77SceptreOB 09-26-2011 06:41 PM

Quote:

I never would have believed it until this past weekend, but I now actually believe those numbers. I have been messing around with my pile of spare motors. Currently I have a 1979 V200 Mercury 2.4L powerhead on a 2001 200hp mid section/lower unit (This is equivalent to a mid 80's 2.4L 175). Propped right and the motor seems to have plenty of power to push the 23 . . . the numbers above are with a full tank 70 gallons, HUGE 400+lb pilot house, 2 adults, 25hp Kicker, tons of gear.
So you were motoring down the stream with how much of a tailwind?? LOL! That old engine kicks ---.......!

pair of jacks 09-28-2011 08:48 PM

175
 
I have an E-tec 175 on my 21- only have 22 hrs. on it but the one time I clocked it, with 95 gallons of fuel and two people on board, I had a 24 kt cruise and top end of 31 kts. Now I used to have a 200 Opti and there is a noticeable difference at top end but since I fish the ocean and rarely run at top end I traded off for much better fuel economy and a quiet reliable engine. My two cents would be that with a 23 those numbers would be hard to attain that he's claiming.

doodlebug 09-30-2011 06:40 AM

Dog the do make different props,mine will almost do that with one motor trimmed out with way to much prop, (19p powertech 4blade) way to much for a single 150.

basswacker 09-30-2011 09:31 AM

i dont even get those numbers with a 225

Bigshrimpin 09-30-2011 10:09 AM

at 4400/4500rpm - I'm cruising at 28/29mph and topping out at 5800rpm 38/39mph. My gps doesn't lie (at least I don't think it does). That 175 zuke should perform better than . . . a 32 year old Merc v200 motor rated at the powerhead not prop.

Bigshrimpin 09-30-2011 10:19 AM

Bass - That Johnson 225 is a mean motor. How do you have it setup? You should be able to bump it up a few holes . . . What prop are you running? If you can find a nice 17P Viper . . . I'll bet you'd be a happy man.

Here's performance specs from a 2.6L OMC seadrive . . . those were about 205hp at the prop from what I understand but they had the heavy bracket / trim and tilt.

http://www.classicseacraft.com/broch...Drivefront.pdf

ascescuek 10-01-2011 02:04 PM

gantt diagram
 
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captbone 10-05-2011 09:04 PM

Its all about set up. The right prop and engine height make a huge difference.

I have hit 41mph on GPS with a tired single 225hp Optimax on my 25ft Bertram FBSF and light load.

I have fished with 6 full size adults and 80 gallons of fuel and still hit 36mph+ with bimini up.

Its all about set up.

http://i117.photobucket.com/albums/o...n/100_1611.jpg

gss036 10-22-2011 11:54 PM

Seacraft 23WA
 
I have a Honda 225 hp on my 23WA and the last time I had it checked by the Honda dealer here, he said that Honda told him I wasn't running the motor hard enough at top RPM. He says since I am still under warranty, go out and run it. I did and I was surprised, at 6000 RPM, I was getting 46 MPH on my GPS. That is moving and the boat felt a little light on the stern. I can't afford to do that ofter and my fuel flow gauge all shows 16 GPH.

Bigshrimpin 01-19-2012 01:20 PM

http://www.thehulltruth.com/attachme...l-dsc01768.jpg

saw this thread on THT . . . Pretty neat thread. 34knots = 38mph.

http://www.thehulltruth.com/boating-...e-model-7.html

captbone 01-23-2012 10:39 PM

Thanks BigShrimp

That is where I heard about it.

That combined with your report with a single 2.4 liter 200hp hitting 39mph with a good load proves it all comes down to set up. I love the fact that the 175hp Suzuki is a four banger.

It is a viable, affordable option for many people would are not solely focused on offshore.


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