Re-power my 1999 Adventure 208

[Rmazza]

I am thinking about replacing my 1999 Yamaha 175 2 stroke with a new 4 stroke. Interested to learn what size I should use. I hear the 4 strokes are heavier and I may need to go up to 200 but most of my use is in the ocean off NC so normal speeds of 20 -25 is acceptable. Also interested to learn recommended brand but currently leaning towards Yamaha as the 1999 has been a good experience.

 

[trapper]

Rmazza , replaced the outboard on my 208 with a Yamaha F200i4 some years ago and believe it to be a great combo. Running a Reliance 15p blade.

 

[seasick]

I second the Yamaha F200I4. It is a perfect match for that year 208. The inline 4 weighs just about the same as the old 2 stroke.

 

[Sdfish]

I went with a Yamaha F150 last year. I typically fish 3 guys and a full 38 gallon bait tank. Performace is as quoted on the Grady website. I'm also running SS 15 prop. I don't really run the boat hard, typically at 4000 rpm and 20-22 mph. I boat out of Southern California and also have a a1999 Adventure.

 

[magicalbill]

Sdfish;

Looks like in the pics your running full negative trim on the gauge. Trim up to 3-4 bars on the display and you'll pick up 2-3 MPH with the same RPM's.

I ask pardon if I'm mistaken here. I couldn't see the pics clearly, but it looks like you have full fuel and your engine is trimmed all the way in.

 

[seasick]

If I may also add: If your trips are not long enough to use a lot of gas, don't fill the tank all the way. It looks like your tank is full.
You will notice a difference with a full tank versus a partially full one. 40 extra gallons is like have two extra medium adults on board. You performance and efficiency will suffer just lugging around the extra gas.

 

[Sdfish]

Thanks guys, your both right. I'll trim it up more and mess with it. I usually do leave with a full tank, I know it is a lot of weight. My typical trips are 60-100 miles round trip, I could definitely get away with way less in the tank. I just added the nmea hookup to the motor so I can track fuel usage better. Thanks again!

 

[seasick]

Thanks guys, your both right. I'll trim it up more and mess with it. I usually do leave with a full tank, I know it is a lot of weight. My typical trips are 60-100 miles round trip, I could definitely get away with way less in the tank. I just added the nmea hookup to the motor so I can track fuel usage better. Thanks again!

For 100 mile trip, you probably need 50 gallons of gas plus 1/3 reserve so that about 68 gallons. Fill up the tank!

 

[Sdfish]

I typically get 2.5 to 3 mpg with this motor and the above load depending on how much trolling I do. This is my last trip, it was a little bumpy and when we got to the spot, 27 miles out, one of my boys started to get sick so we came back in. Almost 67 miles on 21 gallons.

 

[Summertop511]

Mercury V6 225 or 200 four stroke. They very popular so very back ordered. 475 lbs? 87 octane.

yanaha I4 and 475 lbs? 200hp and 89 octane

I typically get 2.5 to 3 mpg with this motor and the above load depending on how much trolling I do. This is my last trip, it was a little bumpy and when we got to the spot, 27 miles out, one of my boys started to get sick so we came back in. Almost 67 miles on 21 gallons.

Run same distant, what safety gear u carry? I feel like I should have more equipment

 

[Sdfish]

The typical stuff. My boys and I always have inflatable life vests ON with strobes. Flares, recent and expired. 2 vhf, with dsc. One of the vhf is a handheld with dsc. My ditch bag has the handheld, flares, strobes and whistles in it, as well as an orange signal flag that floats out.
I'll get an ebirb or ACR, I haven't decided which one though.
I just recently installed a 2nd bilge pump in the bilge, makes me feel better to have that redundancy.
I do run slow at night, and I never take chances with the weather.
Thankfully the weather is pretty predictable here. 60-100+ miles roundtrips are routine out here for offshore fishing.