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
" The 4 stroke just sounds weak and struggling and the 2 stroke just sounds happy to be on the water" maybe the best definition about this questtion...😉
As somone who had a 2 stroke 5hp motor And now a 4 stroke 6hp This is verry true t strole sounds amazing But for me the bigest difrence is The 4 stroke runs and the 2 stroke well wont anymore and i dont know why
In my case I'm going to use it on a 1.98 tender dinghy. But yesterday I went to check and obviously the 2t was very light compared to the 4t and last Sunday I tried one of them and was very strong regarding torque but the 4t is more practical for me, no oil mix , throttle in my hand. So I did my decision I'm going for the 4t
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
You champion, i love that 👌 I have no problem with loving an outboard, I have a special motor or two that I baby as well. Great to hear your doing great maintenance too, they are great little motors. Cheers, Aussie Boat G
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.
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.
That’s awesome 👏. Yeah those little 4hp two strokes are great, same as the 5hp with a smaller carburetor. If it’s the 4hp I’m thinking of it’s actually made by tohatsu in Japan (should say on serial number plate somewhere - made in Japan) Good speed too 👍 Cheers mate
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.
@@brucejagielski7079 Yes. At 200 lbs. when sitting at the back of the boat the transom drops several inches lower in the water. I've had the boat and motor out a few times now and the 15" shaft length on the old Sears 3.0 Gamefisher works just fine on the Pelican Bass raider boat.
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 !
Cheers mate, I too have one of those 4 - 5hp Mercury - Tohatsu outboards. Mine is a 2006 model but believe it or not, nothing much has changed since the 1987 model. Most parts are interchangeable. Thanks again 👌
Yep, correct. Actually made by Tohatsu and also badged Nissan. A lot of the smaller Mercury outboards are built by tohatsu in Japan, awesome little motors. Actually just Tohatsu outboards with different stickers and painted black. Mercury is a fantastic company that makes very good products which is why they are happy for Tohatsu to produce some of their smaller products, they know that they are awesome 😎 Cheers 👌
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
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
Hi mate, Thanks for your comments. Yeah that’s true, I never thought of doing that test. Next time I’m doing a comparison I will add that for sure. Cheers Aussie Boat Guy 😎
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 :-)
Hey mate, Thanks 👍. As soon as a 20hp 4 stroke comes my way I will do a vid, probably compared to a Mercury 15hp super (18hp tohatsu) two stroke. Cheers
Hi Mate, Yeah I was surprised at the difference. I wanted a fair comparison, both has props on that are supplied from factory, both the same pitch, both the gear cases are identical and with the same gear ratio, the 4 stroke just not as powerful. the rev range on the 4 stroke is lower for max recommended rpm too. cheers 🍻 Aussie Boat Guy 😎
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
I have a 5hp 4-stroke Suzuki, thinking of selling it for a 5hp 2-stroke Tohatsu. It’ll be running on a small 3m tinny. Would I be wise to switch to the two-stroke or remain using the 4-stroke on this vessel? Ta mate
If you can try the two stoke I would, how much weight is onboard, that really kills the performance of the small hp outboards. Cheers Aussie Boat Guy 😎
@ I am about 100kg and the added fishing gear (with batteries and trolling motor, etcetera) would probably equal to 40-50kg. Would that extra weight limit speed a great deal when comparing 2-4 stroke outboards in the same horsepower bracket?
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 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
Hi Mate, Yeah, a lot of the motors through the 60s where like Swiss clocks and ram so nicely 👌 If you are after a light hood two stroke motor the 9.8hp Tohatsu is amazing for only 26kgs. when you go to the 9.9hp Tohatsu it’s a much bigger capacity so lots more torque too which is nice. the Mercury 9.9 and 15hp are great motors too. Cheers 🍻 Aussie Boat Guy 😎
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.
I think I'd stick with 4 for kicker. Also nice some 4 are so quiet makes it more pleasant. 2 stokes tend to foul plugs if you run low rpm a lot. Although I troll often with my Johnson 25. Gotta wring it out occasionally and keep a wire brush and spare plugs on board
Hi Mate, The weight of the 4 stroke would slow it down compared to the light two stroke. The other motor in the boat would definitely slow the boat down, probably not that fair for the two stroke as the 4 stroke is heavier, oh well the two stroke still outperformed the 4 stroke. cheers 🍻 Aussie Boat Guy 😎
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
Hey mate, A 3.5hp will push it but it’s not enough if you are going against a head wind or something. Normally a 5.35m boat will be a long shaft transom too so check that before you buy a short shaft because a short shaft won’t work. A 25hp sounds better on a boat that big, you may get frustrated going 4kph with a 3.5hp and full throttle everywhere. Hope this helps. Cheers 🍻
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
This engine requires 50:1. IMO they run fairly hot for a water cooled engine at that ratio, so I wouldn't run any less. And don't cheap out on the oil, semi-synthetic or synthetic TCW-3 is preferred.
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!
@@25hpboatracerman there should be little to no difference at WOT. lower speeds for sure, but power is power. actually the 2 stroke might be slightly better as it makes less power (supposedly haha)
@@25hpboatracerman si infatti Secondo te perché il 2 tempi va più forte? Io avevo il Mercury 3.5 e lo sentivo sempre basso di giri anche al massimo Hai provato l'elica in alluminio?
@@NinoSpinner Ciao 👋 Non ho provato l'elica in alluminio. La mia opinione è che il due tempi sia più veloce perché ha un numero di giri più alto e ha più coppia rispetto al fuoribordo a quattro tempi di quelle dimensioni. Ho notato che con CV maggiori il quattro tempi si sente bene.
Sì, pensavo che il 4 tempi dovesse avere più coppia, ma non è così. Entrambi i motori sono ad albero corto con la stessa regolazione dell'assetto e la stessa elica. ho anche il sospetto che i 3,3 CV a due tempi possano essere più di 3,3 CV.
❤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 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.
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.
Yeah, true. Its not that deep there though, only about 3m. Didn’t feel like I was going to drop them but if so, I would swim down and get it. I could do a video on what to do after a motor is submerged too 😂, would be embarrassing but a bit funny.
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.
Hey mate, good thoughts for sure and definitely would have a small impact, not as much as thought though, I did try moving my body further forward with the 4 stroke on the back with no improvement. The weight difference is only 6kgs, like moving my leg forward a bit in the boat. In saying that I’m sure there is a small impact from the 6kg difference in weight being placed in a different spot. I only put the spare motor on the middle section, not right up front. I do feel like the boat was more bow up with the 4 stroke because it was less powerful and slower, the two stroke seemed to push passed that point and nearly planed, leveling the boat because of more speed. Cheers for the thoughts, that’s what it’s all about 👌 Wish I could have run the both together, that would have been interesting too.
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.
Cheers mate 👍 Yeah I really wanted to run them both but couldn’t fit them properly, that boat has wheels in the way unfortunately 😢. Probably would have not gone much faster than the 3.3hp, maybe 15kph. Thanks again 👌👌 Thanks
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....
Hi mate, Both motors were trimmed on exactly the same trim setting with the same propeller and same gear ratio lower units. The reason you are seeing more waves is because the 4 stroke is slower and the boat is running deeper in the water. All the best 👌 Aussie Boat Guy 😎
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.
Hey mate, Looks that way for sure but the 3.5hp 4 stroke definitely has less power which is part of the reason for the boat sitting lower at full speed. The two stroke seems to just push past that stern down plowing stage. In reality the weight difference is only 6kgs so it’s not a massive amount that will affect things too much, like moving a my leg forward a foot or something. On board the 3.3hp two stroke defiantly feels like it’s got another 0.5hp over the 4 stroke. I do like the tiller on the four stroke though, way better. Cheers 🍻
@@25hpboatracerman It's interesting that two nominally similarly powered engines have such a difference, particularly in the 'pick up' when you open the throttle. Clearly the 2T has more low end torque, and probably also a lighter flywheel. I have the 3.3 2 stroke on my Caper Cat. Flat out it pushes us at about 7 knots, but it is very thirsty for such a little motor, especially at full speed. I also dislike the pollution it emits, the constant misfires at trolling speed, and the way the leg drags in the water when we're sailing because it only lifts about 45 degrees. So I'm contemplating a 4 stroke replacement. Any advice?
@@nerd1000ify Hi mate, Yeah, the two stroke do use a bit of fuel hey. I get about 4 to 5km from the onboard tank on that dinghy in the video. The rough idle is because they are such a simple motor with fixed timing, they also sometimes have a bit of a flat spot from idle to speed because of that fixed timing too. The 4 stroke I tested has the exact same leg, clamp bracket and lower unit as the 2 stroke so it will only trim up the same hight with the same retainer push pin. I didn’t have the 4 stroke long enough to see how it was on fuel unfortunately. The 4 stroke would definitely have less pollution. The two I tested are actually built by Tohatsu (Mercury just put their stickers on) both good little motors. I feel your pain with the leg dragging, that’s not ideal, I wonder if there is a mod that can be done to gain a bit more trim when not using, a wedge or something? Cheers Aussie Boat Guy
@@25hpboatracerman good info, thanks mate! I'll have to look into a wedge or something, the motor certainly can tilt higher than the push pin holds it.
True but the 4 stroke is bigger, Heavier noticeably not as fast and more complex and you will have to change the oil twice a year. But you can troll for as long as you want in the 4 stroke and you wont foul your plugs like in a 2 stroke.
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
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?
Cheers mate. Yeah, I really want to do a 15hp four stroke compared to a 15hp two stroke for sure. Or even the 20hp four stroke vs a 18hp two stroke. Would be good to see an independent view. A few I have seen are trying to sell the 4 stroke of course. The trim settings where set to optimum for top speed on both motors. The 4 stroke just is definitely less powerful. Thanks 👌
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 .
Haha, yeah, an 85cc 2 stroke MX bike engine converted to marine and that boat would tryna wheelie over. Nothing like the smell of pre-mix in the morning. 4 stroke? Yaaaaawn
Hi mate, It may go better with a lower pitch prop, don’t know if top speed would change though. I really wanted to compare the two motors with the same pitch prop (which both had the same from factory) they both have the same leg and gear box with the same gear ratio so it was a fair comparison on the same boat with the same trim setting. good comments champ, I do think hole shot on the 4 stroke would be better with a lower pitch prop but it was even more apparent on board how much more power the two stroke had. all the best Aussie Boat Guy 😎
Hi mate, Yeah, with the larger 4 strokes maybe but not these two. Check out the video of me towing a 30ft yacht with the 3.3hp two stroke. The video is big boat tiny outboard. Cheers 🍻 Aussie Boat Guy 😎
My brother helped me I am a simple fisherman in Morocco I need help me with such a small engine 3.3hp and I don't have enough money I have 50 dollars 😢😢
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😅?
Hi mate, Yep, easier on the ears but not by much. As for fuel yes the four stroke uses less but the two stroke really doesn’t use much either. The thing I really like about the 4 stroke is the tiller throttle, I would buy it because of that. Cheers 🍻 Aussie Boat Guy 😎
Hey mate, Good thoughts 👌 Of course same props both - 7 pitch identical plastic and both motors have the same gear ratio too, basically the same lower unit. Both motors are actually Tohatsu and are built in Japan. The fuel range totally depends on what hull you have them on. I have tested the range of the two stroke on a ten foot light aluminium boat with minimal luggage and just me onboard - about 10km range off the 1.5 liter tank. I have not range tested the 4 stroke. Cheers
Hi mate, I haven’t had issues with the carbs on the 3.5hp, is your filter ok and is your fuel clean? Might be worthwhile cleaning out your tank, flushing your fuel lines and changing fuel filter. Oh and yes, they are not powerful 😂 Cheers 🍻 Aussie Boat Guy 😎
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
" The 4 stroke just sounds weak and struggling and the 2 stroke just sounds happy to be on the water"
maybe the best definition about this questtion...😉
As somone who had a 2 stroke 5hp motor
And now a 4 stroke 6hp
This is verry true t strole sounds amazing
But for me the bigest difrence is
The 4 stroke runs and the 2 stroke well wont anymore and i dont know why
In my case I'm going to use it on a 1.98 tender dinghy. But yesterday I went to check and obviously the 2t was very light compared to the 4t and last Sunday I tried one of them and was very strong regarding torque but the 4t is more practical for me, no oil mix , throttle in my hand. So I did my decision I'm going for the 4t
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
You champion, i love that 👌
I have no problem with loving an outboard, I have a special motor or two that I baby as well.
Great to hear your doing great maintenance too, they are great little motors.
Cheers,
Aussie Boat G
I just got one and I wanted to ask you does it have the water that shoots out to keep it cool
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
Cheers mate 👍
Wrobg
I have the 3.3 and i love that little motor. Gets me around fine on the big Texas lakes. Good video!
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.
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.
That’s awesome 👏.
Yeah those little 4hp two strokes are great, same as the 5hp with a smaller carburetor. If it’s the 4hp I’m thinking of it’s actually made by tohatsu in Japan (should say on serial number plate somewhere - made in Japan)
Good speed too 👍
Cheers mate
Great test to make, congratulations very insightful. Thanks, I'm thinking of powering my double kayak with a 3.3 2 stroke.
Hi Mate,
thanks 😊
Glad you liked it!
cheers 🍻
Aussie Boat Guy 😎
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.
That’s awesome, I think I owned one of those many years ago and was impressed.
Cheers 🍻
Aussie Boat Guy 😎
Is the shaft long enough for the bass raider?
@@brucejagielski7079 Yes. At 200 lbs. when sitting at the back of the boat the transom drops several inches lower in the water. I've had the boat and motor out a few times now and the 15" shaft length on the old Sears 3.0 Gamefisher works just fine on the Pelican Bass raider boat.
Really do love your channel
Hi mate,
Thanks so much, really appreciate your encouragement.
Cheers 🍻
Aussie Boat Guy 😎
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 !
Cheers mate,
I too have one of those 4 - 5hp Mercury - Tohatsu outboards.
Mine is a 2006 model but believe it or not, nothing much has changed since the 1987 model. Most parts are interchangeable.
Thanks again 👌
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.
Yep, correct.
Actually made by Tohatsu and also badged Nissan.
A lot of the smaller Mercury outboards are built by tohatsu in Japan, awesome little motors. Actually just Tohatsu outboards with different stickers and painted black.
Mercury is a fantastic company that makes very good products which is why they are happy for Tohatsu to produce some of their smaller products, they know that they are awesome 😎
Cheers 👌
Is that a twin or single ?
2 stroke for life 👌
Absolutely 👍
Bruh
It's a real bummer you can buy new ones any more in Australia any more.
Love my little 3.3 2s merc. Brilliant engine.
Yep, they are the best I reckon.
Cheers 🍻
Aussie Boat Guy 😎
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
Too easy mate 👍
Cheers
2.5 hp propane
Very well done video sir! Really appreciate the comparison from all angles. Good luck and Happy Adventures to you!
Thank you kindly!
In the USA there is an upgrade kit with alloy prop which supposed to give 5hp.
Yeah cool 😎
Is that for the four stroke obviously.
They probably put the 6 carburetor on it or something
Cheers 🍻
Aussie boat Guy 😎
Hello, there is an important question: is the four-stroke less polluting than the two-stroke? Being environmentally friendly is much better
Preserving the environment is very important, and check whether this information is correct or not
Hi Mate,
Yes the four stroke is less pollution, by how much I’m not sure. neither is good for the environment.
Cheers 🍻
Aussie Boat Guy 😎
Hybriedcelrric with 2 to 4 stirrer hybrhde kes ootiinf
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
Hi mate,
Thanks for your comments.
Yeah that’s true, I never thought of doing that test.
Next time I’m doing a comparison I will add that for sure.
Cheers
Aussie Boat Guy 😎
Key factor may have been gearing. Different size/pitch props make all the difference
Exact same gear ratio and prop pitch, same trim settings .
They run the exact same leg and lower unit
Cheers 🍻
Aussie Boat Guy.
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 :-)
Hey mate,
Thanks 👍.
As soon as a 20hp 4 stroke comes my way I will do a vid, probably compared to a Mercury 15hp super (18hp tohatsu) two stroke.
Cheers
@@25hpboatracerman Thanks mate, whatever you put up, I will watch :-) Great work
@@nordicdust 👍
It really sounds like the 4T is over propped which is not letting it rev-out fully.
Hi Mate,
Yeah I was surprised at the difference.
I wanted a fair comparison, both has props on that are supplied from factory, both the same pitch, both the gear cases are identical and with the same gear ratio, the 4 stroke just not as powerful. the rev range on the 4 stroke is lower for max recommended rpm too.
cheers 🍻
Aussie Boat Guy 😎
Hey mate, I was just wondering if you could put a dolphin on each outboard?
Hi Champion,
Unfortunately I don’t have those motors anymore.
All the best,
Aussie Boat Guy 😎
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
Good test, just in time for me because I'm going to buy one
Hi Champion,
Glad it was helpful 👍
All the best,
Aussie Boat Guy 😎
I have a 5hp 4-stroke Suzuki, thinking of selling it for a 5hp 2-stroke Tohatsu. It’ll be running on a small 3m tinny. Would I be wise to switch to the two-stroke or remain using the 4-stroke on this vessel? Ta mate
If you can try the two stoke I would, how much weight is onboard, that really kills the performance of the small hp outboards.
Cheers
Aussie Boat Guy 😎
@ I am about 100kg and the added fishing gear (with batteries and trolling motor, etcetera) would probably equal to 40-50kg. Would that extra weight limit speed a great deal when comparing 2-4 stroke outboards in the same horsepower bracket?
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
5 hp propane best
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.
Cheers mate 👍
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
Hi Mate,
Yeah, a lot of the motors through the 60s where like Swiss clocks and ram so nicely 👌
If you are after a light hood two stroke motor the 9.8hp Tohatsu is amazing for only 26kgs. when you go to the 9.9hp Tohatsu it’s a much bigger capacity so lots more torque too which is nice.
the Mercury 9.9 and 15hp are great motors too.
Cheers 🍻
Aussie Boat Guy 😎
7 5 hp jet outbards crasy
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.
Yeah, I see your point.
I reckon either would be a good kicker.
Cheers
Aussie Boat Guy 😎
I think I'd stick with 4 for kicker. Also nice some 4 are so quiet makes it more pleasant. 2 stokes tend to foul plugs if you run low rpm a lot. Although I troll often with my Johnson 25. Gotta wring it out occasionally and keep a wire brush and spare plugs on board
What about a 3.5 vs 5hp? I have a Mercury 3.5hp and it is the same speed as my 5hp Johnson
Excellent test - thanks!
It’s great watching a video when the bloke is Aussie and acctually knows what he’s on bout ✅
Cheers mate 👍
Appreciate your comments 👌
Good comparison. thank you.
Cheers 👌
Thank you for making this video.
Hi champion,
too easy 👌
thanks for your support
cheers 🍻
Aussie Boat Guy 😎
Would the weight of the other engine slow it down?
Hi Mate,
The weight of the 4 stroke would slow it down compared to the light two stroke.
The other motor in the boat would definitely slow the boat down, probably not that fair for the two stroke as the 4 stroke is heavier, oh well the two stroke still outperformed the 4 stroke.
cheers 🍻
Aussie Boat Guy 😎
@@25hpboatracermanHonda bf100 older. Runs nice I believe but it pushes my 12 ft aluminum boat around 10mph.
@@25hpboatracermanfeel like it should go faster.
You should also do a comparison of fuel consumption.
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
Hey mate,
A 3.5hp will push it but it’s not enough if you are going against a head wind or something.
Normally a 5.35m boat will be a long shaft transom too so check that before you buy a short shaft because a short shaft won’t work.
A 25hp sounds better on a boat that big, you may get frustrated going 4kph with a 3.5hp and full throttle everywhere.
Hope this helps.
Cheers 🍻
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
The four stroke for sure mate for trolling.
Cheers 🍻
Great great video! Thanks!
Guys, what fuel premix should I use on the 2 strokes 3.5 hp Tohatsu/Nissan/Mercury?
Thanks
Use 1:50 to 1:75 with outboard 2 stroke oil
@@florianborkenhagen9434 Thanks man 👍
This engine requires 50:1. IMO they run fairly hot for a water cooled engine at that ratio, so I wouldn't run any less. And don't cheap out on the oil, semi-synthetic or synthetic TCW-3 is preferred.
Is there a small 2.5 to 3.5 hp 2stroke available brand new with a twist grip?
Hi mate,
Not here in Australia, they are not selling any two strokes here new anymore 😢
Cheers
@@25hpboatracerman Ok thanks mate, I'm in UK.
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.
Very true, and good point 👌
True only if they have the same gear ratio which these do.
The legs and lower units look pretty much identical.
Cheers 🍻
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!
How about speed for 2 motor run together? Have you ever try yet.?
Hi mate,
I really wanted to try that but I could not mount them properly on that hull 😢.
Cheers 🍻
Did you do a fuel burn comparison at WOT? That would also be interesting
Unfortunately I did not have time to do a fuel burn, I am sure the 4 stroke would be better economy.
cheers
Aussie Boat Guy 😎
@@25hpboatracerman there should be little to no difference at WOT. lower speeds for sure, but power is power. actually the 2 stroke might be slightly better as it makes less power (supposedly haha)
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
CIAO
si ho sentito che c'è un kit per cambiare il 3.5hp a 5hp
Grazie
Aussie Boat Guy 😎
@@25hpboatracerman si infatti
Secondo te perché il 2 tempi va più forte?
Io avevo il Mercury 3.5 e lo sentivo sempre basso di giri anche al massimo
Hai provato l'elica in alluminio?
@@NinoSpinner Ciao 👋
Non ho provato l'elica in alluminio.
La mia opinione è che il due tempi sia più veloce perché ha un numero di giri più alto e ha più coppia rispetto al fuoribordo a quattro tempi di quelle dimensioni.
Ho notato che con CV maggiori il quattro tempi si sente bene.
@@25hpboatracerman ok ma il 4 tempi non dovrebbe avere più coppia?
Forse cambia la corsa? Sul 2 tempi è più lunga forse?!?
Sì, pensavo che il 4 tempi dovesse avere più coppia, ma non è così. Entrambi i motori sono ad albero corto con la stessa regolazione dell'assetto e la stessa elica.
ho anche il sospetto che i 3,3 CV a due tempi possano essere più di 3,3 CV.
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.
Thanks mate 👍
Yeah, the little 3.3hp will be totally fine.
Cheers and enjoy 👌
Thanks so much 👍🍺🦘🐨🇦🇺
❤❤❤well done mate, thank you
Hi mate,
Thanks for your comments.
Cheers 🍻
Aussie Boat Guy 😎
❤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.
Great comments 👌
All my same opinions.
Thanks for your input Champ.
cheers 🍻
Aussie Boat Guy 😎
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'v got the 3.3 on a 12ft aluminum boat and I can go up on plain with the help of a hydrofoil
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.
Yes we xant have to much emisin ektruc motire with 2 strokes hybrude 2 stokes
I would be afraid to loose the motor when changing it on the deep water.
Yeah, true.
Its not that deep there though, only about 3m. Didn’t feel like I was going to drop them but if so, I would swim down and get it. I could do a video on what to do after a motor is submerged too 😂, would be embarrassing but a bit funny.
Great Video
Cheers mate 🍻
All the best 👌
Aussie Boat Guy 😎
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.
Hey mate, good thoughts for sure and definitely would have a small impact, not as much as thought though, I did try moving my body further forward with the 4 stroke on the back with no improvement.
The weight difference is only 6kgs, like moving my leg forward a bit in the boat. In saying that I’m sure there is a small impact from the 6kg difference in weight being placed in a different spot. I only put the spare motor on the middle section, not right up front. I do feel like the boat was more bow up with the 4 stroke because it was less powerful and slower, the two stroke seemed to push passed that point and nearly planed, leveling the boat because of more speed.
Cheers for the thoughts, that’s what it’s all about 👌
Wish I could have run the both together, that would have been interesting too.
@@25hpboatracerman Yeah. That would be pretty cool.
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.
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?
Cheers mate 👍
Yeah I really wanted to run them both but couldn’t fit them properly, that boat has wheels in the way unfortunately 😢. Probably would have not gone much faster than the 3.3hp, maybe 15kph.
Thanks again
👌👌
Thanks
Thought we were going to see a run with twins on at the end of vid 😀
Would have loved too but couldn’t fit them both on the mount 😢.
Cheers 🍻
So I was not the only one who expected this!!!
There should be no problems with these lightweight engines I think.
I wouldn't try with 2x6hp (2×28kg)
Great clip mate.
Does the new one start when shifted in forward gear (possible to crank)?
Cheers mate,
Unfortunately I forgot to check, I know the two stroke does.
Thanks 👍
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
Hi mate,
Both motors were trimmed on exactly the same trim setting with the same propeller and same gear ratio lower units. The reason you are seeing more waves is because the 4 stroke is slower and the boat is running deeper in the water.
All the best 👌
Aussie Boat Guy 😎
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.
Hey mate,
Looks that way for sure but the 3.5hp 4 stroke definitely has less power which is part of the reason for the boat sitting lower at full speed. The two stroke seems to just push past that stern down plowing stage.
In reality the weight difference is only 6kgs so it’s not a massive amount that will affect things too much, like moving a my leg forward a foot or something.
On board the 3.3hp two stroke defiantly feels like it’s got another 0.5hp over the 4 stroke.
I do like the tiller on the four stroke though, way better.
Cheers 🍻
@@25hpboatracerman It's interesting that two nominally similarly powered engines have such a difference, particularly in the 'pick up' when you open the throttle. Clearly the 2T has more low end torque, and probably also a lighter flywheel.
I have the 3.3 2 stroke on my Caper Cat. Flat out it pushes us at about 7 knots, but it is very thirsty for such a little motor, especially at full speed. I also dislike the pollution it emits, the constant misfires at trolling speed, and the way the leg drags in the water when we're sailing because it only lifts about 45 degrees. So I'm contemplating a 4 stroke replacement. Any advice?
@@nerd1000ify
Hi mate,
Yeah, the two stroke do use a bit of fuel hey. I get about 4 to 5km from the onboard tank on that dinghy in the video.
The rough idle is because they are such a simple motor with fixed timing, they also sometimes have a bit of a flat spot from idle to speed because of that fixed timing too.
The 4 stroke I tested has the exact same leg, clamp bracket and lower unit as the 2 stroke so it will only trim up the same hight with the same retainer push pin.
I didn’t have the 4 stroke long enough to see how it was on fuel unfortunately. The 4 stroke would definitely have less pollution.
The two I tested are actually built by Tohatsu (Mercury just put their stickers on) both good little motors.
I feel your pain with the leg dragging, that’s not ideal, I wonder if there is a mod that can be done to gain a bit more trim when not using, a wedge or something?
Cheers
Aussie Boat Guy
@@25hpboatracerman good info, thanks mate! I'll have to look into a wedge or something, the motor certainly can tilt higher than the push pin holds it.
@@nerd1000ify drill another hole in it
We have Fuel Filter that may fit your Outboard Motor. We can provide for free. Do you need?
Hi Mate,
That’s a very kind offer and I appreciate it 👌
I really do not need any fuel filters at this stage though.
Thanks again,
Aussie Boat Guy 😎
I’ve had both but the 4 stroke is so nice and quiet
And more expensive to purchase and maintain. And much heavier especially for an old man like me.
True but the 4 stroke is bigger, Heavier noticeably not as fast and more complex and you will have to change the oil twice a year. But you can troll for as long as you want in the 4 stroke and you wont foul your plugs like in a 2 stroke.
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
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?
Cheers mate.
Yeah, I really want to do a 15hp four stroke compared to a 15hp two stroke for sure. Or even the 20hp four stroke vs a 18hp two stroke. Would be good to see an independent view. A few I have seen are trying to sell the 4 stroke of course.
The trim settings where set to optimum for top speed on both motors.
The 4 stroke just is definitely less powerful.
Thanks 👌
What is this segment about 15hp are you talking about?
My 3.5 Nissan 2 stroke is a 30# monster!! Lol I love it but going 15-20 on my 16/32 flatty
Yeah, they are good little motors.
cheers
Aussie Boat Guy 😎
very nice
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 .
Haha, yeah, an 85cc 2 stroke MX bike engine converted to marine and that boat would tryna wheelie over. Nothing like the smell of pre-mix in the morning. 4 stroke? Yaaaaawn
@@boogiewoogit5597 100% 👍🏻
The 4 stroke needs a lower pitch prop. It sounds The torque is too low
Hi mate,
It may go better with a lower pitch prop, don’t know if top speed would change though.
I really wanted to compare the two motors with the same pitch prop (which both had the same from factory) they both have the same leg and gear box with the same gear ratio so it was a fair comparison on the same boat with the same trim setting.
good comments champ, I do think hole shot on the 4 stroke would be better with a lower pitch prop but it was even more apparent on board how much more power the two stroke had.
all the best
Aussie Boat Guy 😎
Put some weight on bet the 4 stroke has more torque then
Hi mate,
Yeah, with the larger 4 strokes maybe but not these two. Check out the video of me towing a 30ft yacht with the 3.3hp two stroke.
The video is big boat tiny outboard.
Cheers 🍻
Aussie Boat Guy 😎
Should let the 4 stroke warm up. Mine works way better warmed up
keep your hand on the tiller. your on the water,not in you living room, that motor could get cockeyed in a nano second.
Hi Mate,
Good point, and good to remind everyone, even though it’s such a small motor things can still go wrong super fast.
Cheers 🍻
Aussie Boat Guy 😎
Should of used both at the end for fun 👍
Hi mate,
Yeah I wanted too but unfortunately nowhere to clamp them both on.
Cheers 🍻
Aussie Boat Guy 😎
My brother helped me I am a simple fisherman in Morocco I need help me with such a small engine 3.3hp and I don't have enough money I have 50 dollars 😢😢
Hi Champion, sorry to hear that, hopefully you can work something out. 🍻
See if you can get an old one and fix it.
Cheers 🍻
Aussie Boat Guy 😎
@25hpboatracerman I'm my brother, we don't have the means, help me. 😢
Hey man the two stoke are ment to push a boat while a four stroke is to pull a boat.
“Mercury Outboard Blues….”
i prefer 2 stroke 3.3HP over the 4 stroke 3.5HP too
Hi mate,
yeah so true 👍
cheers 🍻
Aussie Boat Guy 😎
Just look at the size comparison at the end. The 3.5 is too big and heavy for its own good.
Never selling my 2 strokes
Me too 👍
Idem
My Nissan 5 horse 2-stroke pushes my 16-ft Old Town predator squareback canoe faster than I need to go LOL
Yep, they are awesome little motors.
Cheers 🍻
Aussie Boat Guy 😎
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😅?
Funny 👌😄
Cheers 🍻
Aussie Boat Guy
Because every stroke is a power stroke \m/\m/
👍
But what about fuel consumption. I'm buying a 4 stroke. Easier on the ears.
Hi mate,
Yep, easier on the ears but not by much. As for fuel yes the four stroke uses less but the two stroke really doesn’t use much either.
The thing I really like about the 4 stroke is the tiller throttle, I would buy it because of that.
Cheers 🍻
Aussie Boat Guy 😎
Toy size motors but beats manual labor yea! No external tank's
stoke mate
👌👌
Same props on both? Otherwise a meaningless comparison. What’s the fuel usage & range on each?
Again meaningless comparison.
Hey mate,
Good thoughts 👌
Of course same props both - 7 pitch identical plastic and both motors have the same gear ratio too, basically the same lower unit. Both motors are actually Tohatsu and are built in Japan.
The fuel range totally depends on what hull you have them on.
I have tested the range of the two stroke on a ten foot light aluminium boat with minimal luggage and just me onboard - about 10km range off the 1.5 liter tank. I have not range tested the 4 stroke.
Cheers
i have the 3.5 four stroke - it's a dog. also that carburetor is awful, it gets clogged super easy
Hi mate,
I haven’t had issues with the carbs on the 3.5hp, is your filter ok and is your fuel clean?
Might be worthwhile cleaning out your tank, flushing your fuel lines and changing fuel filter.
Oh and yes, they are not powerful 😂
Cheers 🍻
Aussie Boat Guy 😎
Offroad bikes and small boat engines are supposed to be 2 stroke.
I think its even written in the Bible😁
Amazing 😁
🚤
Love boats and outboards.
Cheers 🍻
Aussie Boat Guy 😎
2 stroke vs 4 joke!! i will take a 2 stroke every time.
I had a Suzuki 2.5 4 stroke , did not like it. Changed to Yamaha 4 ho two stroke , super