Mercury 3.5hp four stoke vs 3.3hp two stoke comparison. 

Great video, short and to the point with no extra stuff to skip through! Gotta love the sound of the 2-stroke when you hit the gas lol. The 4 stroke just sounds weak and struggling and the 2 stroke just sounds happy to be on the water

I have the 3.3, thats my baby and I keep it covered and wax the cover after use so it still looks new. I got it in 1999 new, clean the carb 1x per year with new spark plug added, water pump every 3 yrs. last year I had to buy a new cdi for it but other than that it has been super reliable

I have the 3.3 and i love that little motor. Gets me around fine on the big Texas lakes. Good video!

Very well done video sir! Really appreciate the comparison from all angles. Good luck and Happy Adventures to you!

Couldn't agree more. You've nailed it . The 2S will always have more torque than a 4S and will get out of the hole much quicker. Thank you for sharing

Thanks for your reply. I do believe that my motor was built in Japan. I bought it brand new in 1987 to replace my 1957 Evenrude that had a cracked block. My motor also has forward , neutral and reverse which was an important feature for docking. Enjoyed your video !

Really do love your channel

I have a 1987 Mercury 4H.P. with throttle on the tiller handle and it has given good service since new with minimal repairs. It pushes my 14' - 0" Jon boat at about 15 knots at full speed.

Great test to make, congratulations very insightful. Thanks, I'm thinking of powering my double kayak with a 3.3 2 stroke.

2 stroke for life 👌

Excellent test - thanks!

This is great, I have just rebuild a 3,5 hp 4 stroke from 2008. Great vid, thanks :-) I am rebuilding a 20 hp 4 stroke from 2016 now, just waiting for your video on one of them :-)

Great video you can certainly see and hear the difference watching the video, It would be interesting to see the minimum speed that they could go without stalling, this is somthing that fisherman are interested in when trolling lures

I purchased a used Sears Gamefisher 3.0 HP 2 stroke, air cooled, aluminum prop boat motor back in the mid 1990's at a yard sale and it ran perfect. Here it is over two and a half decades later and i'm still using that same great running boat motor. I just purchased another one that the seller dropped in the water while it was running. When I got it home the piston was seized up. Took me a day to get it freed up and now it runs just fine.I sold my aluminum 12 foot boat and purchased a 10' Pelican Bass Raider pontoon boat which is where this motor will be attached too for many more years to come. I prefer two strokes for the reasons you mentioned. They are lighter, Stronger running, and mine is air cooled so there's no impeller to replace. Tanaka sold out years ago so this motor isn't made any longer but running and/or parts motors are still available on facebook marketplace, craigslist, and ebay. I'm always searching for good deals on this 3 hp engine, running or not.

Good comparison. thank you.

Thank you for making this video.

Give us more info in these tests!!!! Was your boat planes out.???? Would of been pretty awesome if you ran both motors at the same exact time. Just because it’s cool

Love my little 3.3 2s merc. Brilliant engine.

Top video, mate. Very interesting. Also, loved the video on the workings of a two-stroke engine. Informative indeed. Even for a complete novice like myself. I’m currently tossing up between getting a 4/5hp 4-stroke or a 4/5hp 2-stroke outboard. I’m going to put the chosen motor (based on the decision made) on the transom of a kayak/boat called, Jonny Bass Boat 100. I think it’s a planing hull, but not certain as I’ve also heard someone say it’s a displacement hull. The hull on these ‘boats’ leaks water thru the pod, when outboards above 2.5hp are attached, which is why many people who attach higher horsepower motors to it end up fibreglassing the hull. Something I will do too. I’m just curious on which outboard 4/5hp (2 or 4-stroke) you’d recommend for the Jonny Boat 100? After watching your videos, your opinion and recommendations would mean a lot to my near-future decision… Kind regards, Dimitri

I have a 3.6 hp 2 strokes from the 80s I was thinking to get a new 3.5 4 strokes but after watching this video I'm not convinced in making the deal. just what i was looking for thank you

The two stroke is made by Nissan. I have the Nissan version and it's been a great little motor. Easy to carry around too.

2stroke a lot faster there mate out of the hull. you should go a video on a 15hp 2stroke vs 15hp 4stroke. Awesome mate love your work.

Great clip mate. Does the new one start when shifted in forward gear (possible to crank)?

Great Video

It’s great watching a video when the bloke is Aussie and acctually knows what he’s on bout ✅

In the USA there is an upgrade kit with alloy prop which supposed to give 5hp.

Love the video. Would have liked to see you run both motors at the same time for shits and giggles. I wonder what speed they would reach?

Great great video! Thanks! Guys, what fuel premix should I use on the 2 strokes 3.5 hp Tohatsu/Nissan/Mercury? Thanks

I need some advise with outboard engines please, I am about to get a second hand small 16ft Shetland 535 cabin fishing boat and been advised by someone that the minimum engine I should get is 25HP 2strock? but I am only using the boat for fishing and gentle cruising not into fast boating just for 2 people most of the time. I seen lot of 2.5 HP 3.5 HP engines are these outboard any good for my little boat? Thanks in advance

❤❤❤well done mate, thank you

The 2 stroke also has what sounds like a higher rpm. If using the same prop this can only equate to a higher end knots.

You should also do a comparison of fuel consumption.

Thanks so much 👍🍺🦘🐨🇦🇺

I'm in the market for a small outboard. The most important thing for me is not top speed but the ability to troll all day at slow speed 1.2 mph or 1.9 km per hour. This is ideal for kokanee fishing. Which motor would be best for slow trolling? Thanks

For someone using the motor as a main drive motor, I would prefer the 4-stroke. But I'm looking for a kicker motor for trolling with on my 14' v-hull. The set throttle on the two stroke would make trolling far easier. Neither motor pushes fast enough at idle like I would hope for.

What about a 3.5 vs 5hp? I have a Mercury 3.5hp and it is the same speed as my 5hp Johnson

very nice

Great comparison. Was able to pick up a 3.3 for a 12ft porta bote. Cannot wait to get out on the water. Should be fine for now.

Of course the 2 stroke will get out of the hole faster but who needs that. I think the 2 stroke sounded louder. I also like the sound of the 4 stroke better. I have to wonder if you had the same pitch for both motors.

No comparison between the 2 stroke and 4 stroke. 2 strokes for life!! I won't ever let the manufacturers dictate what we are to own! I've got 4 mercury 2 strokes and will never get rid of them!

Did you have the 4 stroke at its lowest trim? It was certainly riding a lot less level… which will be partly based on weight, of course, but will greatly impact speed. No surprises here… thanks for the video. The real market segment impacted by the new regulations is in the 15hp size, in my opinion. You simply cannot get a portable 15hp 4-stroke that is light enough. It’s a more expensive comparison to organise though… collaborative effort might make it more viable?

Cool Video. I want to bring up the possibility / probability that the balance of your boat may have impacted the speed test. When the four stroke is running, there is considerably more weight aft of the boats CG. Then when you move the four stroke up front and put the two stroke on the back there must be a balance difference right? The drive-by comparison you did at the end of the video says it all... Just look at the difference in angles of attack as you go by.. Much more level with 3.3 2S and very steep with the 4S. THAT definitely makes a difference in speed efficiency.. A level boat goes faster. Try doing a test where the CG angles (weight distribution) is the same. All that said, Wow, that little 3.3 surely held it's own.

It really sounds like the 4T is over propped which is not letting it rev-out fully.

Did you do a fuel burn comparison at WOT? That would also be interesting

I want a little 5, 7 or 10hp fishing motor like I had as a kid in the 1960s… coming from a stv with a 270hp merc …. Lol😢 I don’t have the patience for this new under 7hp motors . I’d love a 198os merc 7.5 on a 12’ v bottom tinnie

Thought we were going to see a run with twins on at the end of vid 😀

I think a big part of the reason for the speed difference is the heavier weight of the 4 stroke. When you motored past the camera side- on the boat was clearly much better trimmed with the 3.3 on the transom, meanwhile with the 3.5 the stern was buried quite badly. Might be interesting to move your weight further forward (e.g. with a bit of poly pipe as a tiller extension) and see if the 4 stroke gets closer to the 2 stroke's speed.

I'v got the 3.3 on a 12ft aluminum boat and I can go up on plain with the help of a hydrofoil

How about speed for 2 motor run together? Have you ever try yet.?

Would the weight of the other engine slow it down?

Hello, there is an important question: is the four-stroke less polluting than the two-stroke? Being environmentally friendly is much better

Is there a small 2.5 to 3.5 hp 2stroke available brand new with a twist grip?

I am a two stroke fan, be it boats, motorcycles, or work equipment. I have a restored 1960's 3hp two stroke lawnmower that easily cuts thicker weeds without stalling than my four stroke 6.5hp lawnmower.

I’ve had both but the 4 stroke is so nice and quiet

This makes perfect sense since two stroke engines are more efficient than four stroke engines. They produce more power at the cost of increased emissions.

❤2strokes, Lighter, Faster, Quicker, more responsive Acceleration, can lay them down on their side in the boot, Negatives dribble a little oil into the water from the fuel, and you need to mix the oil to the petrol for engine lubrication, and governments made it nearly impossible to buy new ones.

I would be afraid to loose the motor when changing it on the deep water.

My 3.5 Nissan 2 stroke is a 30# monster!! Lol I love it but going 15-20 on my 16/32 flatty

it's my understanding that 2strokes have more torque and power... so you posted the top speed of the 3.5 but failed to post the speed for the 3.3?... how much over the 11kmph was the 3.3... it looked at least 1/3+ faster than the 3.5

What is the point of a small 4stroke?honestly,for what they are used for they are a re herring as far as im concerned.The only thing in their favour is no oil/petrol premix which unless your fussy doesnt really count.Then you have added weight,more expensive to buy,lack of torque etc and a nice extra complicated service burdon and dont forget to make sure its kept in upright position in your vehicle....

It seems like you forgot to trim the four stroke,from the waves I can tell,check it out

Two strokes fire twice as often a 4 stroke . That’s why they have more power & torque , the down side is they use a lot more fuel & they consume oil for the life of the engine. However power to weight they are just so hard to beat. Poor old 2 stroke marine engines are very handicapped compared with their higher power brethren two strokes. The exhaust expansion chambers of motorcycles are the heart of the famous two stroke power band , a high power designed engine of the same cc displacement would likely achieve 7- 12 hp .

C'è però da dire che di serie il Mercury ha l'elica in plastica E che potrebbe diventare un 5 hp con 2 sole modifiche

“Mercury Outboard Blues….”

Should of used both at the end for fun 👍

We have Fuel Filter that may fit your Outboard Motor. We can provide for free. Do you need?

keep your hand on the tiller. your on the water,not in you living room, that motor could get cockeyed in a nano second.

i prefer 2 stroke 3.3HP over the 4 stroke 3.5HP too

Should let the 4 stroke warm up. Mine works way better warmed up

Because every stroke is a power stroke \m/\m/

The 4 stroke needs a lower pitch prop. It sounds The torque is too low

Hey man the two stoke are ment to push a boat while a four stroke is to pull a boat.

Never selling my 2 strokes

Toy size motors but beats manual labor yea! No external tank's

Just look at the size comparison at the end. The 3.5 is too big and heavy for its own good.

stoke mate

2 stroke vs 4 joke!! i will take a 2 stroke every time.

I'm buy a two-stroke as a backup if my main conks out in a wild storm. I'm guessing the four-stroke only runs if you address it by the right pronouns😅?

But what about fuel consumption. I'm buying a 4 stroke. Easier on the ears.

i have the 3.5 four stroke - it's a dog. also that carburetor is awful, it gets clogged super easy

Offroad bikes and small boat engines are supposed to be 2 stroke. I think its even written in the Bible😁

Same props on both? Otherwise a meaningless comparison. What’s the fuel usage & range on each? Again meaningless comparison.

🚤

My experience of the little 3.3hp 2 stroke is similar, those things punch well above their weight. I now have the 5hp tohatsu 2 stroke and it really gets my dinghy up on the plane easily. I have tried a 4hp Honda 4 stroke and it was slow compared to the little 3.3.