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Old 01-07-2003, 08:50 AM
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Default Johnson 140 4-stroke or 150 2-stroke

I'm planning on purchasing a new boat in the next six month when I move back to the states. The question I have is what would the actual performance differences be between a 2003 Johnson(suzuki) 140 4 stroke and a 2003 Johnson 150 stroke? I know the fuel economy will be better on the 4 stroke but how much top end, cruise speed and hole shot will I loose going with the 140 4 stroke? I'm planning on buying a Dusky 203 open fisherman that weighs 2200 lbs with 20 degree dead rise. Anybody own one of these. At this time I'm not interested in an Evinrude/Ficht engine.
Thanks.
Scott

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Old 01-07-2003, 12:32 PM
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Default Johnson 140 4-stroke or 150 2-stroke

I calculate that the 140, correctly rigged and propped would top out at 44.1mph.

The 150, also correctly rigged and propped would get a bit over 45mph.

'Nuff said?

Red sky at night. . .
JB
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Old 01-07-2003, 01:15 PM
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Default Johnson 140 4-stroke or 150 2-stroke

Scott,

I was out looking at Dusky's web-site today, I believe they list performance stats on the web-site for the Dusky 203..powered with an Evinrude 200hp...this will give you some ballpark numbers...click on the 203...scroll down the page and look for "Performance Page"....you can also email Dusky...they are very helpful and will respond within a day or so..

check it out...http://www.dusky.com/welcome.htm

Great boat...I've been to the facility in Dania...and not long ago ran across a Dusky 20 footer made in 1976...it was in unbelievable shape....with no major visible issues...just a few spyder cracks in the gelcoat...

If I lived closer to Florida I would not hesitate to buy one of these boats...let me know how you make out....

Good luck
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Old 01-07-2003, 08:09 PM
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Default Johnson 140 4-stroke or 150 2-stroke

The Suzy 140 is getting outstanding reviews; not only is it light, but a couple of folks I know who run them say they are very "un-four-stroke like" in terms of their hole shot and top end. I have never ridden with one but saw someone powerloading a Fountain with twins at the ramp and damn were they quiet, even when pushing him up a steep ramp.
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Old 01-07-2003, 08:15 PM
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Default Johnson 140 4-stroke or 150 2-stroke

I have a 20'CC 2200 lbs. dry.

It had a 130 on it & it did 30 MPH WOT, 20 MPH cruise @4200

Now have a new 175 Johnson & it does 40 MPH WOT, 30 MPH cruise @ 3500, 35 MPH @ 4000.

Test were done with just me abourd, 1/3 tank fuel, calm conditions in the ICW, 55-60 degress. GPS was set to MPH.

I dont think either the 140 or the 150 will hit 40 WOT.

I would recommend a 175-200. That extra 25-50 HP will plane the boat easier & you can run with less RPMs at the same speed.

Rob Thomas
Naples, FL
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Old 01-08-2003, 11:33 AM
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Default Johnson 140 4-stroke or 150 2-stroke

Lookin for a fight,
What kind of boat do you have? What kind of mileage are you getting with the 175 Johnson? Overall how do you like the motor compared to the 130 Honda?

Scott

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Old 01-08-2003, 05:13 PM
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Default Johnson 140 4-stroke or 150 2-stroke

Scott111,
I like the 175 so far, it has 5+ hrs on it & I was doing some testing to compare to the 130. Both are carbed. The 130 was stolen and I found the new in the box 2000 175 for what I would have paid for a rebuilt. About $5,500+ rigging.

The difference is amazing, I used to have to give the 130 full throttle to get it planed, then 4200 to cruise at 20 mph.

The 175 jumps on plane at half throttle and planes at 3000 @ 25mph, 3500 @ 30, 4000 @ 35.

Soooooooo much faster and easier on the motor.

I don't know about fuel usage yet. I can't imagine it will that much worse the the 130.

My marina may have another leftover if you want.

Gulf Marine
Clearwater, Fl
1-727-442-5175

Rob Thomas
Naples, FL
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Old 01-08-2003, 06:28 PM
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Default Johnson 140 4-stroke or 150 2-stroke

Lookin,
You must have had something wrong with that 130HP. I have a 115HP carb'd Merc on a 20' CC it's about 2300lbs not counting anchors, safety eqpt, etc. It runs 37-38MPH by GPS. 30MPH top speed just doesn't sound right.

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Old 01-09-2003, 12:24 PM
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Default Johnson 140 4-stroke or 150 2-stroke

My Brother has a 1996 150hp Johnson on the back of a 20ft CC (2200lbs dry). Here's stats on his setup.

With 2 people, 75gallons (full tank), flat calm seas the engine trimmed up, running @ 5400rpm . . . top speed is 38.4 mph (gps).

Same load 3800 rpms @ cruising speed 25mph the boat burns 10 - 12gph (floscan).

With 1 person he claims that the boat will hit 43 mph with 1/4 tank of fuel.

I will be interested to see what kind of performance and fuel ecomomy people get with suzuki/johnson 140. If you get one please post your stats.

This is from suzuki's page.
----------------------------------------------
http://www.suzukimarine.com/boatbuil...10mibokv2.html

http://www.suzukimarine.com/boatbuil...aquasport.html

[This message was edited by BigShrimpin on 01-09-03 at 03:42 PM.]
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Old 01-09-2003, 12:37 PM
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Default Johnson 140 4-stroke or 150 2-stroke

http://www.dusky.com/203performance.html

Here's the stats from dusky's site with a 150 ficht.
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Old 01-09-2003, 12:41 PM
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Default Johnson 140 4-stroke or 150 2-stroke

The Suzuki/Triumph test listed in the above post is incorrect. We generally get speeds of 40MPH+ with a 140 Suzuki on a Triumph 210.
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Old 01-09-2003, 02:37 PM
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Default Johnson 140 4-stroke or 150 2-stroke

All,
Thank you very much for the replies/info. Keep it coming!
Lakensea, what size prop are you running on the Triumph and how are you determining speed?
I really like the Suzuki but just don't want the boat to be a dog. I love the idea of never having to fill an oil tank and a very quit engine. I am not concerned with the maintenance since the technology is almost the same as their DOHC motorcycle engine, which I'm familiar with working on. When I talked to Dusky they said the Suzuki was just "adequete" and would top out at 35 mph or so. Anybody have this engine on a Dusky 203?
Thanks again for the info.

Scott

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Old 01-09-2003, 02:43 PM
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Default Johnson 140 4-stroke or 150 2-stroke

We run the 18 pitch stainless.
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Old 01-09-2003, 03:30 PM
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Default Johnson 140 4-stroke or 150 2-stroke

I put a new suzuki 140hp 4 stroke on my 20ft wellcraft steplift v this summer. put 120 hours on it and averaged 3.75 to 4.0 gals per hour.top speed is 44mph or so says my garmin gps. my favorite crusing speed was 28mph at 3,800 rpm. I sold this boat in October and bought a 25ft grady white sailfish 252g. I'm putting a pair of these on it (I just bought them this week)and I feel confident they will push this boat with no problem. The dealer has the spring promotion going on which is $500 off or free 3yr extended warranty.I took the money. Dave on the Malai-Kai
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Old 01-10-2003, 04:00 AM
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Default Johnson 140 4-stroke or 150 2-stroke

docsouce,
What size prop were you running and how much did the Wellcraft weigh?

Scott

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Old 01-10-2003, 07:10 AM
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Default Johnson 140 4-stroke or 150 2-stroke

Wellcraft v-20 steplift (cuddy) is 1920lbs (dry) and has a 60 gallon fuel tank.

Docsouce - Thanks for posting the stats on your wellcraft.

Scott111 - if dusky posts speeds of 45mph with a 150 . . . I have a hard time believeing that you will lose 10 mph off your top end if you drop 10 hp. You may want to ask them the question again.

[This message was edited by BigShrimpin on 01-10-03 at 10:19 AM.]
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Old 01-10-2003, 12:42 PM
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Default Johnson 140 4-stroke or 150 2-stroke

I have to say that none of these stats are that accurate if you don't compare transom deadrise. a 2300lb boat with a 14degree or a 24 degree will be so different it would be apples and oranges, not including hull shape differences. I plan to put this motor on a 2300lb 14 degree 21 foot steigercraft center console. spoke to one person with the same setup and he said top end is 37MPH. I am in the same conundrum as far as should I be going with 2 stroke. hope I am doing the right thing!!!
keep em coming
Brendan
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Old 01-10-2003, 12:58 PM
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Default Johnson 140 4-stroke or 150 2-stroke

if you want a 150/175 4 stroke. Suzuki is supposed to unveil thier v-six 4 stroke 150/175/200/225 at the miami int'l boat show. it's only a few weeks away.

article:
http://www.boating-industry.com/News...e=4&N_ID=34833

http://www.boating-industry.com/News...e=4&N_ID=37264

shut up and fish
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Old 01-10-2003, 03:52 PM
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Default Johnson 140 4-stroke or 150 2-stroke

Flats392,
Yes I heard that. I'm planning on attending the boat show so I can see and ask question about the new 4-strokes. I'm hoping the cost and weight does not go up too much and that Dusky will offer them. I was wondering inf the 150-175 might not be a larger inline 4 or even inline 6 instead of a V-6. That should save some weight and also the cost since they would only have to manufacture 2 camshafts and and drives instead of 4 and 2. Any body heard any rumors or got any ideas? Maybe even and inline 5. Huum?

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Old 01-10-2003, 09:31 PM
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Default Johnson 140 4-stroke or 150 2-stroke

Scott111:

If your going with the Dusky 203, and you say it weighs 2200 lbs before motor and other items. I would have to say in all fairness that you need more than the 140-150 hp motor.
I have the Seachaser 220 BayRunner est weight 2990 lbs, ready to fish with me in it, full of fuel, DF140 Suzuki,mounted in the 4th hole,PowerTech 13.25 x 21 x 3 ss prop. Turning 6000 rpms =36.5 kts/gps. By the way my advertised empty weight is 1750. So by my estimation you will do less than I am getting. Given the difference in hull design and weight. My hull is semi-v and I believe yours is deep-v. I think you would be happier with a 200 if you can find one comparable in weight to the DF140. You really have to pay attention to the gear ratio of the four stroke engines. Ex. my DF140 is 2.38 -1. Most of the two stroke engines are 2.00 - 1. I think the Yamaha F Motors are 2.00 - 1 also.

Good Luck

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