jeeze i can't believe the haters of this vid. It's pretty awesome to see young engineers at work. Scetching up designes, fabricating the parts, getting into the tuning software to set the fuel and ignition parameters at differing loads. It would be interesting to see if its more economical with a turbo as opposed to N/A especially when under the differing load conditions of the sea, and also interesting would be how to solve the turbo drain problem when you have the motor trimmed right up. Best of luck with it, seems like so much fun!
Ahmed A I’m not a hater. I just think that supercharging is more practical for outboard performance. They offer instant response that 4-strokes desperately need. I still respect their efforts and design.
Ahmed A honestly would love to see turbo models of 300hp, 350hp, 400hp, 450hp, and even 500hp since they have excelled at turbo engines in there waverunners in the past and would make a bullet proof beast of a powerhouse
@@prevost8686 a twin turbo setup is just for that reason a good setup. If they tune it to spool up in sequence that is. One starts down low and the other high up
proaudiohd the engine sounds like shit. Play the music louder. I don’t even know why they would do it to a Honda.... 2 stroke merc please 3 cylinder 40hp. Those engines can be pushed to 100hp with out the turbo mount... that turbo on a Honda is just for looks and ego...
Alex Altrichter At this point the results don’t justify the effort. Something is holding it back. Maybe as simple as hanging on a low performance hull. It’s still a work in progress.
keep up the good work guys ! we need more young minds at work on these outboards intergrating new technology ! im a 30 plus year marine tech and have seen a lot of improvements in outboards and inboards but its people like you guys that eventually hit on that next level shit bro !! Keep it up !!
Definitely interesting. Looks like you need to trim the motor up when you had the boat up on plane. Might be able to squeeze a few more RPM and MPH out of it.
FYI, I had a friend majorly injured by doing what the guy in the back of the boat is doing-making motor adjustments. The boat hit a wave, he lost grip on the seat and natural reaction when you feel like you're getting thrown out of the boat...he grabbed the engine. He slid down the engine and you could see the propeller slice marks on his leg (and prob personal parts-but they were left in the water). Years later he had to have that leg amputated. Do yourself a favor and use a harness if you're making adjustments on the engine.
Pretty impressive for a couple kids. Tuning can make our break a turbo. The motor is already high in compression so your gonna need to pull probably 10 degrees of timing. Run e85 or 100 octane to keep it safe. Add fuel to get your afr right and that motor should get after it pretty good if turbos are the right size. Also you got the hull deep in the water. Trim up until your just riding on the last foot of the stern and it will make a huge difference.
You still have a great amount to do to reach that 500 horsepower. But you're starting off in the right direction. It takes time to perfect what you're doing. I'm pulling for you even though I hate Hondas
Well done guys this is an absolutely awesome project! Wow! Respect to the hard work and effort! Just my 2 cents. If you trim the motor properly you will get a better top speed. Once again. Well done!
While I absolutely LOVE how you guys are engineering that Honda 225 with turbos and custom parts, great job on parts manufacturing and engineering. But there is no way that engine is pushing 500 HP. That boat probably runs 40 MPH on a totally stock 4 stroke 225. If that engine pushed out even close to 500 HP the boat would be 60+ MPH. Case in point I had a 30' boat with twin 250 Evinrudes completely stock and it was a 64 MPH boat. If I were getting 500 HP from a single engine it would have been even faster due to less weight and lower unit drag.
Power is fairly irrelevant on a boat once you get to a point. Because you can only spin a prop so fast in water before the water can’t keep up and an air bubble forms around the prop and you go nowhere. The difference come from the different props. They need to try a new prop I think
The engineering and design is stunning! Well done guys! Wonder if Clarkson would have used the turbo version on his Toybota instead of the standard BF225! I would definitely tone down the music on some of the video. Awesome work guys
You know this makes me want to build two of these and put them on a performance catamaran. Also it would be cool if Honda produce a 500hp turbo performance model since they are the best at building a marine turbo engine, look at the aquatrax f12x and f15x for example they’re awesome and they’re turbocharged.
Jesus people, this was the first time I. The water ever for this engine! Don’t expect them to just fucking floorboard it from the ramp. Lots of tuning and data collecting at this phase of a project. It’s not like they can call all the other guys that have twin turbo Honda outboards and ask them advice!!!
I think the reason outboards don't go turbo is because of possible use on salt water as highly destructive. Having said that it's not like fresh water and salt water editions for motors aren't already being made so you're spot on that the entire Industry is filled with gas guzzling buffoons going on forever now who have now migrated to the importance of being a 4 stroke gas guzzling buffoon.
Something I've read is that journal-bearing turbos are better suited for long hauls and static RPM and load. Another thing; you could do a single, twin-scroll turbo for i4 or v6 engines and it would be a bit simpler on piping and since you're sizing the turbo "small" compared to race-car guys since you're going for torque and have limited RPM on a boat motor anyway, you shouldn't have to worry about turbo lag or spool. Plus, it'll sound cooler. Another thing you could do is plumb an additional intake from the waterline for water injection, which if you do it right with the right "fineness" of injector, is basically free octane rating. Look up David Vizard for more info.
Brilliant! Finally! What is the conclusion so far or when is the next round of tests? I have been dreaming about this for so long and always wondered why hasnt it been done already, its got to be more economical than a twin engine setup. But on the other hand, can it match the tq of twin setup... Great stuff anyway, would love to see more.
Lookin good. Change to a 17 pitch prop. tThat motor should turn 5500 to 6000 rpm but it doesnt have enough torque to swing that high of pitch prop. The boat will do 80 when you get the right prop matched up to it. Be careful!
I'm confused by this, my 130hp 4 banger 20ft stingray 195cs does 45 mph bone stock. I figured with this setup you are running you could easily get to 70mph :s
i think its more a gearing thing. with stock ratio gears, a stock rev limiter, and a stock prop, the boat would only get to its previous top speed a faster. it probably pulls like a freight train up to 40-50mph though lol
Why all the hate and the ignorant comments about it being slow? It appears this is the first time they had the engine on the water. They’re obviously still testing it and I would imagine want to test how it performs at lower RPM’s first. Everyone saying their stock boat or this boat stock is faster or as fast. Yea. At WOT. They were getting speeds of 38-44 mph at almost 2000rpm less than WOT of the stock motor. Kids are working on something cool for a school project and all the keyboard warriors think it’s trash because they didn’t pin it the first time out and blow it up. It would seem these kids are a lot smarts than most criticizing them.
So you more than doubled the boost and only gained 5 mph lol? 7lbs of boost should easily make another 100hp. I get it it's a big boat but that just seems not very impressive. Maybe on a bass boat it would be more promising?
1 atmosphere 14.7 psi of boost would almost double the hp to about 450hp if done correctly, also they make a dyno just for outboards that connects on the lower unit. now thats the test i would like to see
Where is the update video. Why did you not do full throttle pulls. What where the tuning issues? Run out of fuel system? Tuning limitations? Did you do stand alone management ? Like seriously guys
I'm curious on how that would work wouldn't you want load on the motor for the turbos to spool up? I got a 50 horse Mercury 4 stroke with a 18 ft pontoon boat it won't even hit 20 miles an hour I'm wondering if I put a different prop might get me a little more speed without damaging the motor
Anyone ever think that these college kids doing a project on a shoestring budget might only have a23 ft. Robalo at their disposal? Cut them some slack...
Would be great to see a follow up vid. Obviously that motor runs much higher than 4500rpm. No positive trim on the motor angle either. I realize it may have been a first test situation but a 500hp sinle outboard should push that heavy Robalo pretty good. 20 inch pitch may not be enough. Good luck. Its interesting. You need to beef up the lower unit if youre ever gonna really push that thing. If it truly is 500hp. Good luck.
A compound turbo setup may prove to be more usable as it would help pickup the low end while still holding strong in the top end. Just a thought, I know it's easier said than done.
Good work but the numbers? Test 1: 5lb of boost, 20" prop pitch @ 3500 rpm = 38mph Test 2: increase boost by 140%, prop pitch by 3" and revs by 9% For only a 5mph speed increase? I'm not sure that adds up. Forget the turbo, it doesn't really matter but that prop change and an extra 1000 rpm should give more than 5mph shouldn't it? Or am I missing something?
Hull speed is not an accurate measure of hp. Far to many variables involved to get consistently. We had more of a headwind on the second run than the first. More weight on the boat. Completely different timing map/ fuel map on the ecu. I'm building a Dyno to get a more accurate load on the prop shaft
Things are definitely adding up.. 1- I dont think they trimmed that prop up at ALL. 2- that honda motor is rated up to 6300 rpm's.. they were nowhere near WOT on this test..
Mike Sokolow and? That’s WOT on a lighter boat. They didn’t run this over 4500rpm. The engine has a max operating rpm over 6000rpm. They’re clearly in the early stages of water testing this.
I'm shocked that thing isn't much faster. One of my fishing boats is a little 17 foot aluminum boat with a 50 horse motor on it and it does 40 miles an hour
Why no WOT? Those viewing this who know how boats work would love to see more info on prop selection and such. Fun project. Seems like the high load an outboard runs at, displacement would trump boost systems (and I believe cars run in an opposite regime).
To everyone saying he needs to change gearing or trim up... these are not wide open throttle number probably not even close, the rpms go up when he adds a higher pitch prop, I don’t know why he didn’t do wide open pulls, I’m assuming it’s so he didn’t break the stock lower unit, but that’s not how pitch works when you add pitch your rpm goes down, he is throttling it him self it’s not a motor thing
We had all of 15 minutes of actual tune time. Tuning something like this takes weeks for dynamic testing. Knock sensor was completely turned off and I saw the boost climb to 13.5 and decided to hold it off there and calibrate the tables below that rpm
Great work! So how can I may make that too? Do you offer a kit or sth.? Do you offer a plan with a list of necessary parts, propeller, ECU adjustments and everything?
wait something doesn't add up. if it made 225 on atmospheric pressure then it should make 500 at around 14.7-15psi of boost. double the pressure, double the air, double the power. maybe a little more boost to deal with air density loss due to heat. but 12? you should be around... ((12+14.7)/14.7)*225 = 408.7 hp tops unless you guys did something else I'm not seeing? IDK check my math or maybe the title means that it's 500hp capable?
Hate to say my 20’ 4,000 lb Grady Overnighter with a Suzuki DT225 (normally aspirated), 20 pitch prop will top out at 48 mph (gps verified). You should be doing at least 60 with your setup. Start looking at different pitch props, rpm, and ignition. For what you put into it, it should be doing a lot better.
Maybe in a 20 foot flats boat with a Yamaha 350 sitting on the back. It all depends on hull design and the weight of the boat. I run 40 mph out to the canyons 🤟
Depends some are sponsored as it seems this was by Honda and others are are completely up to the senior design groups. Sky is the limit although for mechEs your wallet is really the limit
How do you equate 500hp? Where did you come up with that? I have a 26 Grady White with a 350 Yamaha and it gets on step quick and trimmed out it does 60mph. Something dont make sense here. Other than that, nice build boys!
jeeze i can't believe the haters of this vid. It's pretty awesome to see young engineers at work. Scetching up designes, fabricating the parts, getting into the tuning software to set the fuel and ignition parameters at differing loads. It would be interesting to see if its more economical with a turbo as opposed to N/A especially when under the differing load conditions of the sea, and also interesting would be how to solve the turbo drain problem when you have the motor trimmed right up. Best of luck with it, seems like so much fun!
I don't think they are Nessaserialy being haters . Sounds like they are just trying to share there ideas as well
Ahmed A I’m not a hater. I just think that supercharging is more practical for outboard performance. They offer instant response that 4-strokes desperately need. I still respect their efforts and design.
Ahmed A honestly would love to see turbo models of 300hp, 350hp, 400hp, 450hp, and even 500hp since they have excelled at turbo engines in there waverunners in the past and would make a bullet proof beast of a powerhouse
@@prevost8686 a twin turbo setup is just for that reason a good setup. If they tune it to spool up in sequence that is. One starts down low and the other high up
If you do any more videos, please do not add music. We want to hear the engine.
Well that engine sounds like crap.
Marty Mcdaniel it sounds exactly how it should
proaudiohd the engine sounds like shit. Play the music louder. I don’t even know why they would do it to a Honda.... 2 stroke merc please 3 cylinder 40hp. Those engines can be pushed to 100hp with out the turbo mount... that turbo on a Honda is just for looks and ego...
coltrain Dontworryboutit Everyone knows Mercs are trash, Ever notice most charter capt's use Suzuki, and Honda? Your stupid is showing
GnR was ok
Most of these down voters couldn't even build a sandwich! Nice job young fellas. It's guys like you that drive innovation.
Yes indeed
Alex Altrichter
At this point the results don’t justify the effort.
Something is holding it back. Maybe as simple as hanging on a low performance hull.
It’s still a work in progress.
keep up the good work guys ! we need more young minds at work on these outboards intergrating new technology ! im a 30 plus year marine tech and have seen a lot of improvements in outboards and inboards but its people like you guys that eventually hit on that next level shit bro !! Keep it up !!
Definitely interesting. Looks like you need to trim the motor up when you had the boat up on plane. Might be able to squeeze a few more RPM and MPH out of it.
FYI, I had a friend majorly injured by doing what the guy in the back of the boat is doing-making motor adjustments. The boat hit a wave, he lost grip on the seat and natural reaction when you feel like you're getting thrown out of the boat...he grabbed the engine. He slid down the engine and you could see the propeller slice marks on his leg (and prob personal parts-but they were left in the water). Years later he had to have that leg amputated. Do yourself a favor and use a harness if you're making adjustments on the engine.
Pretty impressive for a couple kids. Tuning can make our break a turbo. The motor is already high in compression so your gonna need to pull probably 10 degrees of timing. Run e85 or 100 octane to keep it safe. Add fuel to get your afr right and that motor should get after it pretty good if turbos are the right size. Also you got the hull deep in the water. Trim up until your just riding on the last foot of the stern and it will make a huge difference.
dont talk down to them calling them "kids". Id bet alot of money they are both alot smarter and successful than you.
Music is cool for montages not when we’re trying to listen to the motor really cool project tho 👍🏻
bmxjosh0995 у
You still have a great amount to do to reach that 500 horsepower. But you're starting off in the right direction. It takes time to perfect what you're doing. I'm pulling for you even though I hate Hondas
It's the first time on the water. Let them get some data first. I see a bright future for those young men! Nice work!!!
Well done guys this is an absolutely awesome project! Wow! Respect to the hard work and effort! Just my 2 cents. If you trim the motor properly you will get a better top speed. Once again. Well done!
Congratulations on doing this. love watching how the welds got better as you got practice keep it up
Not the right boat to be testing out turbocharged outboards on..try an old bass boat or speed boat that has a hull that was designed for speed.
I don't know how you could be so restrained. After the initial successful cruise, I would have been romping on it lol
Something is wrong with the build. That 225 should perform just as well on that boat with no modifications. I bet the proper prop would work wonders.
The boat is too heavy to go faster than 35 mph with a single 225 outboard.
It’s only turning 4500rpm I bet they don’t want to push it too hard
Hands down sickest project you guys could’ve down. Awesome !
That my friends is dam impressive.
Any engine enthusiast knows that if you upload a video of something awesome you dont play music that is overwhelming the engine sound.
There is so much more to get out of the engine, nice work guys! Subbed yo see the progress!
That's badass. Cant believe this was a damn senior project LOL
CONGRATS guys Honda is funding your project Awesome and good on you. They see something in you keep on going with your ideas.
While I absolutely LOVE how you guys are engineering that Honda 225 with turbos and custom parts, great job on parts manufacturing and engineering. But there is no way that engine is pushing 500 HP. That boat probably runs 40 MPH on a totally stock 4 stroke 225. If that engine pushed out even close to 500 HP the boat would be 60+ MPH. Case in point I had a 30' boat with twin 250 Evinrudes completely stock and it was a 64 MPH boat. If I were getting 500 HP from a single engine it would have been even faster due to less weight and lower unit drag.
309 hp at best
My 18 foot with 250hp fishing boat Johnson did 75 mph
500hp should push you at 70mph, their is no way that’s 500hp it still seems like a 225
70mph in a Robalo 23...lol
JS lol
Maybe more like 350 turbos usually add around 100 hp
KDH Vids a turbo will add how ever much you want to a point not just 100hp
Power is fairly irrelevant on a boat once you get to a point. Because you can only spin a prop so fast in water before the water can’t keep up and an air bubble forms around the prop and you go nowhere. The difference come from the different props. They need to try a new prop I think
The engineering and design is stunning! Well done guys! Wonder if Clarkson would have used the turbo version on his Toybota instead of the standard BF225! I would definitely tone down the music on some of the video.
Awesome work guys
You know this makes me want to build two of these and put them on a performance catamaran.
Also it would be cool if Honda produce a 500hp turbo performance model since they are the best at building a marine turbo engine, look at the aquatrax f12x and f15x for example they’re awesome and they’re turbocharged.
Jesus people, this was the first time I. The water ever for this engine! Don’t expect them to just fucking floorboard it from the ramp. Lots of tuning and data collecting at this phase of a project. It’s not like they can call all the other guys that have twin turbo Honda outboards and ask them advice!!!
I think the reason outboards don't go turbo is because of possible use on salt water as highly destructive. Having said that it's not like fresh water and salt water editions for motors aren't already being made so you're spot on that the entire Industry is filled with gas guzzling buffoons going on forever now who have now migrated to the importance of being a 4 stroke gas guzzling buffoon.
good experiment
in my opinion the best way for an outboard is an Eaton compressor (supercharger), simpler without many complications
Very Impressive group of guys here
Something I've read is that journal-bearing turbos are better suited for long hauls and static RPM and load. Another thing; you could do a single, twin-scroll turbo for i4 or v6 engines and it would be a bit simpler on piping and since you're sizing the turbo "small" compared to race-car guys since you're going for torque and have limited RPM on a boat motor anyway, you shouldn't have to worry about turbo lag or spool. Plus, it'll sound cooler.
Another thing you could do is plumb an additional intake from the waterline for water injection, which if you do it right with the right "fineness" of injector, is basically free octane rating. Look up David Vizard for more info.
Sure as hell picked the right engine. Very impressive. So whatever happened with us great project?
Brilliant! Finally!
What is the conclusion so far or when is the next round of tests?
I have been dreaming about this for so long and always wondered why hasnt it been done already, its got to be more economical than a twin engine setup. But on the other hand, can it match the tq of twin setup...
Great stuff anyway, would love to see more.
Came here for the tuned Honda, can't wait to see more.
Lookin good. Change to a 17 pitch prop. tThat motor should turn 5500 to 6000 rpm but it doesnt have enough torque to swing that high of pitch prop. The boat will do 80 when you get the right prop matched up to it. Be careful!
Florida man builds bad ass 500 hp outboard
I would buy one. The sound is awesome
I'm confused by this, my 130hp 4 banger 20ft stingray 195cs does 45 mph bone stock.
I figured with this setup you are running you could easily get to 70mph :s
That boat hull isn't designed for speed. If these guys had balls they would slap their engine onto a bass boat.
i think its more a gearing thing. with stock ratio gears, a stock rev limiter, and a stock prop, the boat would only get to its previous top speed a faster. it probably pulls like a freight train up to 40-50mph though lol
They only took the revs up to 4500, that motor will rev too 6000. So yes it’ll do 70 mph but that probably not safe on that boat....
they didn't make 500hp. ((12+14.7)/14.7)*225 = 408.7 hp tops
Oh the things money allows people to do!!! But no hate this thing is crazy badass lol
That Honda engine sounds nice what be a beast on the lakes
Grear job guys !! Lots of fun work..
Wow, such a cool project. Got any test numbers on that Robalo - Turbo 225 vs N/A 225? I know Robalos are heavy.
I think you made it slower. Keep it going, can’t wait to see you get those 500 ponies!
I think so too. I have a 200hp Suzuki and I'm running 42mph.
Killer playlist fuck’em all dude !! Tool,sabbath 🤟 sick build
Its been a year now ? Its sielent around this engine... what happened
badass build
Need that on my skeeter bass boat. Sounds sweet.
It's been months since the video any update on the motor or was it a failure?
Why all the hate and the ignorant comments about it being slow? It appears this is the first time they had the engine on the water. They’re obviously still testing it and I would imagine want to test how it performs at lower RPM’s first. Everyone saying their stock boat or this boat stock is faster or as fast. Yea. At WOT. They were getting speeds of 38-44 mph at almost 2000rpm less than WOT of the stock motor. Kids are working on something cool for a school project and all the keyboard warriors think it’s trash because they didn’t pin it the first time out and blow it up. It would seem these kids are a lot smarts than most criticizing them.
If my stock Honda 225 is the least reliable outboard ever, I don’t want to know how you handle this one 😂
This engie is made to run at 6000 rpm at wide open trottle. Either your propeller are wrong or your engine programming is wrong.
Nice! Congratulations from brazil
really its kinda slow for all that, my dads boat with a v6 merc with a 4 barrel did 60mph with the right prop
So you more than doubled the boost and only gained 5 mph lol? 7lbs of boost should easily make another 100hp. I get it it's a big boat but that just seems not very impressive. Maybe on a bass boat it would be more promising?
They didn't even pin the throttle. I doubt this thing maxes out at 4,500 rpm. Almost like they're afraid it won't hold up to the boost pressure.
@@exoticcreature3059 That honda outboard is rated up to 6300rpm
1 atmosphere 14.7 psi of boost would almost double the hp to about 450hp if done correctly, also they make a dyno just for outboards that connects on the lower unit. now thats the test i would like to see
If Honda gets into the Marine performance market. Its over!
Bigger spinners would do better. But, amazing idea. You gotta patent that right away. There's one turbo diesel on the market. Good luck!
Thats sick, another vid please 💪🏻😎🙏🏻
give the welder a head but, that is the most fucked up welds ever
Where is the update video. Why did you not do full throttle pulls. What where the tuning issues? Run out of fuel system? Tuning limitations? Did you do stand alone management ? Like seriously guys
Kudos on a fine job guys but please no more music. Also if you want to see some real numbers on a real high performance boat I have one.
i have a 22 shearwater that runs at 63mph with only me on the boat with a 2019 250 suzuki SS there is no way that motor has 500hp.
Top speed has a lit to do with gearing and prop pitch. More horsepower usually just gives you a better accselleration.
@mike force I see that i have made a spelling mistake in my first comment that might have caused the misunderstanding. Ment to write " a lot".
didn't expect to find TOOL here 👍👍
23 pitch prop is not letting engine turn up in its operating rpm. Try a 21 pitch
I'm curious on how that would work wouldn't you want load on the motor for the turbos to spool up? I got a 50 horse Mercury 4 stroke with a 18 ft pontoon boat it won't even hit 20 miles an hour I'm wondering if I put a different prop might get me a little more speed without damaging the motor
Anyone ever think that these college kids doing a project on a shoestring budget might only have a23 ft. Robalo at their disposal? Cut them some slack...
Would be great to see a follow up vid. Obviously that motor runs much higher than 4500rpm. No positive trim on the motor angle either. I realize it may have been a first test situation but a 500hp sinle outboard should push that heavy Robalo pretty good. 20 inch pitch may not be enough. Good luck. Its interesting. You need to beef up the lower unit if youre ever gonna really push that thing. If it truly is 500hp. Good luck.
Nizpro does a supercharger for the 200 , 250 n 300 SHO YAMAHA
Come on ppl turn off the shit music some of just want to hear that engine purrrr. I agree for these young guys kick ass build !
Lugging it... a 25 proline with a 17P and a 225 honda stock does 44......... you got MEGA work to do........ no where near 500 HP
44 with a 17in pitch! At what rpm? Lol
@@shaunrigby6599 6300
Really cool idea, but...
He’s rpm goes up when he adds more pitch... these are not wot numbers
Zack Stark rpm does not rise with increase in pitch. It drops.
If that thing is pushing 500hp you should have a 26 pitch on there. Dam i got a 175 zuke with a 21.5 pitch
A compound turbo setup may prove to be more usable as it would help pickup the low end while still holding strong in the top end. Just a thought, I know it's easier said than done.
the lower unit would blow apart
Cool vid awesome sountrack
Good work but the numbers?
Test 1: 5lb of boost, 20" prop pitch @ 3500 rpm = 38mph
Test 2: increase boost by 140%, prop pitch by 3" and revs by 9%
For only a 5mph speed increase?
I'm not sure that adds up. Forget the turbo, it doesn't really matter but that prop change and an extra 1000 rpm should give more than 5mph shouldn't it?
Or am I missing something?
Hull speed is not an accurate measure of hp. Far to many variables involved to get consistently. We had more of a headwind on the second run than the first. More weight on the boat. Completely different timing map/ fuel map on the ecu. I'm building a Dyno to get a more accurate load on the prop shaft
Things are definitely adding up.. 1- I dont think they trimmed that prop up at ALL. 2- that honda motor is rated up to 6300 rpm's.. they were nowhere near WOT on this test..
Got a 150 Yamaha on a 13 yr old 22 ft Triumph, it does 40 mph. Hmm.....
Mike Sokolow and? That’s WOT on a lighter boat. They didn’t run this over 4500rpm. The engine has a max operating rpm over 6000rpm. They’re clearly in the early stages of water testing this.
I'm shocked that thing isn't much faster. One of my fishing boats is a little 17 foot aluminum boat with a 50 horse motor on it and it does 40 miles an hour
Cool idea, but I'm sure gearing and prop adjustments are needed. Really not much different to stock setup.
3:28 All that hard work and this is the boat your using it on? LOL!
So what we just saw was making 335hp more than likely by math. Perfect conditions 450hp at the prop IF you can get the rpms up to make the power lol
Awesome choice of music and presentation.
Interesting video
Why no WOT? Those viewing this who know how boats work would love to see more info on prop selection and such. Fun project. Seems like the high load an outboard runs at, displacement would trump boost systems (and I believe cars run in an opposite regime).
To everyone saying he needs to change gearing or trim up... these are not wide open throttle number probably not even close, the rpms go up when he adds a higher pitch prop, I don’t know why he didn’t do wide open pulls, I’m assuming it’s so he didn’t break the stock lower unit, but that’s not how pitch works when you add pitch your rpm goes down, he is throttling it him self it’s not a motor thing
We had all of 15 minutes of actual tune time. Tuning something like this takes weeks for dynamic testing. Knock sensor was completely turned off and I saw the boost climb to 13.5 and decided to hold it off there and calibrate the tables below that rpm
What happened to the water jacketed exhaust? Did it ever run WOT?
Bryan - what ended up happening with this project?
Great work! So how can I may make that too? Do you offer a kit or sth.? Do you offer a plan with a list of necessary parts, propeller, ECU adjustments and everything?
I want this on my bass boat.
You gonna have to add a 2nd motor to get 500 hp kids
I ain't a hater...but where's the dyno screen shot showing a 500 hp pull?
Great to see young Engineers at work at work. Music ruins video we want to hear engine. And see prop info from stock BF225 on that boat vs turbo
wait something doesn't add up. if it made 225 on atmospheric pressure then it should make 500 at around 14.7-15psi of boost. double the pressure, double the air, double the power. maybe a little more boost to deal with air density loss due to heat.
but 12? you should be around...
((12+14.7)/14.7)*225 = 408.7 hp tops
unless you guys did something else I'm not seeing? IDK check my math
or maybe the title means that it's 500hp capable?
Doesn't seem very fast. Still pretty cool video
Seems like a regular 225 at only 43 mph
Hate to say my 20’ 4,000 lb Grady Overnighter with a Suzuki DT225 (normally aspirated), 20 pitch prop will top out at 48 mph (gps verified).
You should be doing at least 60 with your setup.
Start looking at different pitch props, rpm, and ignition. For what you put into it, it should be doing a lot better.
Hi guys. How did you were able to tune it
better trim that thing up! Honda is watching!
You need to use the power trim, you are forcing the bow down in this video. Trim the bow upp and you will get more speed and higher rpm.
Crank her up to 20 pounds 40+ mph is impressive on a single engine center console
rpietros no it’s not impressive... at all
Maybe in a 20 foot flats boat with a Yamaha 350 sitting on the back. It all depends on hull design and the weight of the boat. I run 40 mph out to the canyons 🤟
It’s not impressive. My 23 sportsman 231 with a single 225hp hits 52mph
@@jws1232 👏👏👏 good lake boat
Damn yall actually get cool capstones lol
Depends some are sponsored as it seems this was by Honda and others are are completely up to the senior design groups. Sky is the limit although for mechEs your wallet is really the limit
Is that just a Honda H series??
How do you equate 500hp? Where did you come up with that? I have a 26 Grady White with a 350 Yamaha and it gets on step quick and trimmed out it does 60mph. Something dont make sense here. Other than that, nice build boys!
Anyone see the boat in the distance stuffing itself twice?
What program did you used to tune it??