How in the world does this channel only have 38k subs? I have left this comment many times. Thank you for making your videos. I almost forgot . You have the best sounding ski. A Japanese seed that sprouted an American Beast.
Niche interest, is the truth. Larger channels have more broad appeal and really large ones appeal even to people outside that specific interest as well.
Going to say it likely needs a bigger intake and jet assembly. That engine isn't even being taxed, you could use it to make a bigger boat type then it might get some work.
Their 1st mistake was choosing a pushrod engine. There is no need for the torque. They should have went with a Hyabusa V8 or even a rotary engine. They’re just wasting money trying to make the wrong engine do something it can’t.
The intercooler will make a big difference. Has a huge effect on supercharged oem machines. That engine breaths a lot more air at triple the displacement.
@@omargutierrez6622 , he needs Dean to cut that plate, , hull mod, a Supercooler and a Freedom 162. And PLEASE put the Coco tunnel before it sinks again.
A turbo quietens exhaust noise massively in all engine applications. Straight piped turbo anything is quieter than straight piped non turbo with same engine, due to the turbine reducing the noise output. This is why non turbo and supercharged engines with high flow or minimal exhaust are so LOUD!
I’m very proud of you blokes , you have come such a long way and deserve the recognition and respect from everyone who watches your videos. That V8 is insane, so fast 💨, kind regards Adzy the PWC bloke in Australia 🇦🇺
Not even 5 minutes in to your video here. I could see it on my pixel 7 Pro watching the video sideways. The acceleration is immense. I'm going to watch the rest of the video. I think we're up for some really cool stuff here at the end. Finally got the all aluminum lh6
I’m sure a lot of you have seen it but there’s that guy who’s building that JetSki that has that pump gas giant black anodized hemi with lime green headers. He had the engine built at Steve Morris Engines. I don’t know if it’s still over there or not, I been busy and haven’t watch that channel in a few months. This JetSki is insane, I can’t imagine wanting more
The engine went in and came straight back out again. They need more mods to the body for it to be easily removed to work on. Otherwise it's going to be a shit show trying to wrench on anything. So Steve finally got his parts all done and the engine was going in, but in the green monster hemi fashion. She was straight back on a stand and now awaiting modifications to the body of the ski for easier working on the motor. I only know this because I happened to watch a very recent SM engines video drop. It's like that things cursed. Hopefully only the engineering and once that's all sorted she just flies with torque of a million rhinos and barely even revving.
sheeuit I gaped rings with a grinder for years until I could afford a "real" ring grinder lol...no judgement here brother! Love your channel...cool stuff, love it!
Yeah you guys are totally totally headed in the right direction now. Loving every minute of it! So fast with very little aquatic real estate awesome! 👍
What a beast! 30 years ago I owned a Kawasaki 550SX which ran 55mph and that thing was such a cool jetskit to stunt with. But this? Whole different planet power wise. Wow..
Dude, Summit Racing sells ring grinders for like $35! Just like others have said, I’d take advantage of the torque of the LS, and change the impeller to a very high pitch. It can definitely turn it, and you wouldn’t need to twist it up near as high of RPM. I will say, by far, the baddest sounding ski I have ever heard!
You'd want to pitch the impeller to let the engine sit at the peak HP RPM right at top speed. If this has a stock cam, they are already past the peak HP RPM....but with a cam and head work these can peak in the high 6000s or even higher. The pushrod/torque part doesn't really matter if you are chasing top speed.
I think you will see a fair bit of gain by changing the air filter to something with highr flowrate, and move it so the drive isn't blocking the air running to it. Why not try running double flex hoses up on the shoulders of the driver to get the best possible air inlet :) No matter what you progress with, this project is one of the better ones out there!
After studying this video, I have a suggestion that will perhaps increase the speed at the same time you utilize the pressure in the water jet, reduce the diameter of the jet nozzle by 20% it will give higher pressure out of the nozzle more speed, the V8 has the power for that.
Try to talk with the florida PWC Dragracers. They may have the answer to improve the speed.. Maybe rideplate, Water intake.. Most probbably jetpump size... They usually cut the rear lip of the hull for increase the underhull air flow for example
The actual world record is 142mph.. you are not too far 😁 The record was reached with a Yamaha 1.8 turbo and nitrous with a lot of Hp I guess you already know about that 😊
Might be time to look at the hull on that ski, and see if the factory left any hooks in it. You have plenty of power. I would start looking into the hull and pump for your speed. If it's running too wet, it might be time to look into making the first droop snoot for a yamaha pump. Look at what the river racing jetboats, and drag racing jetboats are doing. Yes, you don't have a mixed flow pump, but many of the same principles can be applied.
I suggested something similar a while ago. But I think they (at least back then) would like to keep it to a "stock"-ish pump. Perhaps they have changed their mind.
The V8 ski sounds so sick! It seems snappier or more responsive on the throttle. Oh! On an other note…. Was that a big fish splashing on the surface just to the right off of your starboard bow at 19:10?!😂 hahaha 🐟 it looked like a decent sized fish probably a coho salmon? At first I thought it might be an injured bird!
You’re going great! Only through consistent testing will improvements be achieved and a couple of things are obvious…… it runs well, reliable and now can be benchmarked for performance improvements. Although it may seem slow to you compared to your other high performance skis, but the acceleration is staggering. Can you also consider increasing the pitch of the impeller as well. If it can accelerate quickly, you have a lot of torque in reserve. If you can increase the thrust and only loose a little acceleration the result would be a higher speed. Just thinking the limits you are hitting is not the engine gearbox package.
you might need a longer ski like a sea doo fishpro. the ski now wants to keep launching itself out of the water even at top speed! it has so much power that little setup you got there and a aircooler is a must if you want to run at those higher rpm otherwise you will cook your engine
I love my FZS and it goes plenty fast with the Riva stage 3 kit... It just lacks that V-8 sound. When you get the bugs worked out of this one, sign me up, I'll take one.... Good stuff as usual...
Cool build and footage, it would be nice to see more full pulls to top speed with the gauges. Lots of cuts and very short clips of the dash during the runs are frustrating. That said, I hope you can squeeze some more speed out of it. I wonder if the impeller pitch needs to be higher.
By the way you were talking, I thought you had a catastrophic failure. I think this was a huge success. You have the skills running fairly consistently, and now you can play with setup and “little” things to see what makes a difference. Perhaps I’m missing something (probably) but the rocket like acceleration doesn’t seem ideal for top speed … seems like the pump is holding it back … Thar being said 90+ mph is VERY impressive.
It did have a catastrophic engine failure on the outgoing engine. But the new aluminum engine has been solid. It can go run low 90’s anytime the water is smooth enough. And I know we’re going to go faster once I figure a few little things out
@@JetSkiBrothers Oh yes. The previous engine failed. I kinda had that figured out already, haha.... or highly suspected. It was nice to see a video form you, and I have no doubt that it will go faster and be interesting to follow.
The issue comes from the ring gaps are to tight. when under boost the ring expands an has no were to go but to collapse a ring lane very common on N/A engine that get boosted. Maybe the pump needs more impeller or just a whole new bigger pump!
I don’t know but I sort of think they might not make a bigger pump at least in this form factor. Or an impeller with as much pitch as this could handle?
The ski pump yes may be taped an has no other upgrades BUT Glass work is ezy! A pump can easily be modified into the hull. They got this there on the right track. It sick guys keep killing it!
too cool. easy for me to say, cause I didn't build it, but try to enjoy it instead of chasing a number. And if a number is what it's all about, swap that pump for a prop and then triple digits will be easy. I would ride with pride if it was mine, just like it is, awesome
1:40 - Is that wise? Using a wet sump in a vehicle that is going to experience high g-loading, both from cornering and the impacts of coming off waves and jumping? Is that the air intake above the two exhaust outlets? If so, that's a pretty small surface area to pull enough air through for a turbo V8. There's also a possibility that because of the way the air will end up with a dead spot directly behind your back, that the inlet might be sucking some hot exhaust back in to the engine.
Wet sump should be ok, just about all the forces should be directed downwards... Yes, the air intake might be a bit of a concern, I agree. Not sure its a large problem in reality though, but its got potential to rob a bit of power, thats for sure.
@@nocturnalspecialties642 it's the top end you worry about at those RPMs on an LS when NA as well. Link bars, chain upgrade, rocker arms have weak bearings from factory. IF cam then do the springs as well.
Your maxed out on Hull speed... Make it longer. You don't have to change your deposition or transom. You can have a slice running right down the middle and the hull extensions basically being tapered, C-shaped, skies that the jetski can plain on. Read a little bit about naval engineering and hull speed and you'll understand my description.
Have ever considered chemically intercooling your ski? Also can you tell us what sofwear you are using? First time on your channal and I like wahat i see. Keep it up!
What size fuel tank is on this thing ? That’s my question to know how long will the ride time be. Assuming my old seadoo rotax 90hp would guzzle all 10 gallons in 1.5hrs. Very cool build though. It’s not the destination sometimes but the journey getting g there. I love it for all intent & purposes. It’s a one off. Enough said.
@@gonesilent2814 Hmm, I am curious where you have seen that amount of relatively high powered/high speed PWCs thats been swapped to surface drives and afterwards goes faster, easily-peasily? So you had data you can draw the conclusion you did from, I mean. Because I sure havent seen a single one that would fit the bill. Do you mind enlightening me, because as it stands, and considering my own experience with boats, PWC and the physics behind them, I am still very doubtful of your claim, as it would pertain to this vehicle. Cheers mate.
@@GoldenCroc I've never seen a PWC swapped to a surface drive. I have seen shift in design over the last few years to surface drive from pump drive on the larger vessels. I don't have any data but just from what I've watched pump drive systems must be matched to the HP of the engine. You can change out the impeller to move a bigger volume of water per turn but I think your gonna hit inlet size resections long before all the HP is usable for higher top speed runs. I'm just an spectator who watches you videos. I didn't do my homework and just offer my thoughts.
@@gonesilent2814 You seem serious and sincere enough with your post (in comparison to some people that have their mind made up and just want to be right), so I will make a serious answer: To start from the beginning, jet pumps are indeed terrible for efficincy of propulsive force, and especially for smaller vehicles. Even under-boat shaft mounted props are better. Outdrives and outboard mounted props are better again, and surface mounted props are best. So far your thinking is quite right. But now, scroll up and take a look at my first reply to you again, it only mentions the drivability and how that would affect the top speed one could reach. #the crux is what you yourself write "larger (much heavier than this) vessels" (often sporting two surface drives, with counter rotating props, negating twinsting torque) Surface drives and surfacing props in general can and will induce a lot of twisting torque into the hull. Enough to literally be able to flip a smaller vessel over on its side under some cicrumstances. A PWC is very much in that "small vessel category". Secondly, a PWC is very top heavy compared to a boat. That makes it even easier for it to flip over and/or inducing oscillations known as "chine walk", Bot of which make it very hard if not impossible and certainly extremely dangerous to go fast. I would say for this hull I estimate that speed to be already at no more than 50-60 mph in a PWC hull like this, with conventional surfacing prop mounting. A Jet drive induces very little torque, almost inconsequential. At least, when seen from the prespective that it also "sucks" the PWC down towards the water at the same time, giving it more stability. WIth their short hull length and top heaviness, most PWCs would likely struggle mightily to break (as said above) 50-60 mph running anything but a jet drive system, not because of lack of power, but because the lack of stability would make them very hard, if not impossible to ride any faster. So to quote myself from the first reply again: "Even in a straight line, it might very well be slower because of that."
so glad you guys stuck with it!
👍🍻
Agree
@@JetSkiBrothersyou should make it stand up on a hydrofoil then you could go 120 or faster.
How in the world does this channel only have 38k subs? I have left this comment many times.
Thank you for making your videos. I almost forgot . You have the best sounding ski.
A Japanese seed that sprouted an American Beast.
Niche interest, is the truth. Larger channels have more broad appeal and really large ones appeal even to people outside that specific interest as well.
Point taken.
Only has 38k subs as that is how many aholes adore those pieces of shlt. Ban them all!
i was thinking the same thing.
I really think you need to repitch the impeller. That motor is past peak torque, if you can drop it 500-800 RPM it’ll be much happier on the top end
I'm no expert, but does cavitation happen in an impeller too? I assume that at some point as you say, the impeller becomes the limiting factor.
Going to say it likely needs a bigger intake and jet assembly. That engine isn't even being taxed, you could use it to make a bigger boat type then it might get some work.
@@huss03 Yup cavitation will happen due to over speeding the impeller.
Their 1st mistake was choosing a pushrod engine. There is no need for the torque.
They should have went with a Hyabusa V8 or even a rotary engine.
They’re just wasting money trying to make the wrong engine do something it can’t.
@@DAT240Z72agreed. Just gonna burn up another motor trying to extract more power outside its power band.
The intercooler will make a big difference. Has a huge effect on supercharged oem machines. That engine breaths a lot more air at triple the displacement.
Yeah I’m hoping it helps a lot 👍
@@JetSkiBrothers What are the intake temps and boost?
Yeah the water to air ones are small and since in the water... no other cooling required.
Even the stock class skis with stock engine and stock supercharger are running way faster at the hydro drags.
@@omargutierrez6622 , he needs Dean to cut that plate, , hull mod, a Supercooler and a Freedom 162. And PLEASE put the Coco tunnel before it sinks again.
Involving your kids, was awesome brother!
Thanks, Hulk Hogan!
You video / camera skills are really improving. Like your V8 JetSki.
Thanks! It's been a learning curve but I'm getting there.
Sounds so good. Got that awesome V8 rumble without being obnoxiously loud. Sounds refined
A turbo quietens exhaust noise massively in all engine applications. Straight piped turbo anything is quieter than straight piped non turbo with same engine, due to the turbine reducing the noise output. This is why non turbo and supercharged engines with high flow or minimal exhaust are so LOUD!
That things is insane. It's like a hellcat of the water. Big solid and tonnes of power.
I’m very proud of you blokes , you have come such a long way and deserve the recognition and respect from everyone who watches your videos. That V8 is insane, so fast 💨, kind regards Adzy the PWC bloke in Australia 🇦🇺
Thanks I appreciate that 👍🍻
That ski is getting reliable now.
What an awesome place to test your progress on this really clever build! So fun to see it getting better! Thanks for the great update!
Welcome back boys.
🍻 it feels great to be back
That thing is awesome! It seems pretty manageable at the speeds you have been running it.
WOW the wake it leaves and the sound is insane!
HELL YA glad to see it back running on the water !
chin up dude, your gonna hit a ton I just know it, good luck, all praise to the gods of speed
Thanks 🍻
Not even 5 minutes in to your video here. I could see it on my pixel 7 Pro watching the video sideways. The acceleration is immense. I'm going to watch the rest of the video. I think we're up for some really cool stuff here at the end. Finally got the all aluminum lh6
Sir, I think you've created a ski I actually like better than a screaming two stroke! That thing is certified bad ass.
Man that thing sounds so clean @ id love to hear it in person!
More than anything else I just can’t get enough of the LS turbo coming from a jet ski, it’s incredible!
You guys gotta bring this thing to the Hydrodrags in South Florida this year
I would like to. But I don’t think it’s going to happen this year
As cool as the ski is, it wouldn't be competitive. Great for displaying the work.
With some hull work and prop tuning it could definitely crack 100mph.
I love 2 strokes but, a big angry 4 stroke at full boil does sound like heaven.
There is no higher calling than stuffing giant power into things, any things. Keep it up.
Your a mad man and im here for it .
🤘🍻
Certified madman. You made that look too easy
I’m glad that you have a respectfully quiet exhaust.
I’m sure a lot of you have seen it but there’s that guy who’s building that JetSki that has that pump gas giant black anodized hemi with lime green headers. He had the engine built at Steve Morris Engines. I don’t know if it’s still over there or not, I been busy and haven’t watch that channel in a few months. This JetSki is insane, I can’t imagine wanting more
The engine went in and came straight back out again. They need more mods to the body for it to be easily removed to work on. Otherwise it's going to be a shit show trying to wrench on anything.
So Steve finally got his parts all done and the engine was going in, but in the green monster hemi fashion. She was straight back on a stand and now awaiting modifications to the body of the ski for easier working on the motor.
I only know this because I happened to watch a very recent SM engines video drop. It's like that things cursed. Hopefully only the engineering and once that's all sorted she just flies with torque of a million rhinos and barely even revving.
sheeuit I gaped rings with a grinder for years until I could afford a "real" ring grinder lol...no judgement here brother! Love your channel...cool stuff, love it!
Great Job, incredible content, so happy you guys push through with this project and kept it going. THE BEST 👍
Heck yes... Excited to watch this... going to the big screen!
Nice 👍
Well done gents, you will get there in the end I am sure! And how far you come so far is nothing to sneeze at either! 😀
The kid knows his stuff
I love watching the v8 ski can't wait till you crack the 100mph
I was taking a look at your channel, to make sure I hadn't missed anything... and was shocked at how beautiful the thumbnail for this video is.
Haha, thanks for noticing! Its always a struggle for me with the thumbnails but I agree that one looks pretty good.
Absolute insanity... and I thought my Stage II RXP-X was gnarly!
Yeah you guys are totally totally headed in the right direction now. Loving every minute of it! So fast with very little aquatic real estate awesome! 👍
I had an engines teacher back in trade school who told us..."the speed ain't in the engine...it's in the chassis" oh, how right he was 😲
Holy smokes, you guys are nuts. I laughed and cried at the same time about how insane this beast is🤙🏻
Awwwww shit! Yall still at this thing! That's awesome now I don't have to do it! 😝 0:07
You will get it dont give up
What a beast! 30 years ago I owned a Kawasaki 550SX which ran 55mph and that thing was such a cool jetskit to stunt with. But this? Whole different planet power wise. Wow..
It's crazy how different you and your brother are.good videos
Dude, Summit Racing sells ring grinders for like $35! Just like others have said, I’d take advantage of the torque of the LS, and change the impeller to a very high pitch. It can definitely turn it, and you wouldn’t need to twist it up near as high of RPM. I will say, by far, the baddest sounding ski I have ever heard!
You'd want to pitch the impeller to let the engine sit at the peak HP RPM right at top speed. If this has a stock cam, they are already past the peak HP RPM....but with a cam and head work these can peak in the high 6000s or even higher. The pushrod/torque part doesn't really matter if you are chasing top speed.
you guys are geniuses. stick with it, please.
Looks and sounds amazing. Great job.
Thanks! I'm happy with how it turned out.
This is SO friggin cool and sounds amazing!!!!!! 🏁🏁🏁🏁🏁🏁
That thing is WILD!
love this ch great job !!!
I think you will see a fair bit of gain by changing the air filter to something with highr flowrate, and move it so the drive isn't blocking the air running to it.
Why not try running double flex hoses up on the shoulders of the driver to get the best possible air inlet :)
No matter what you progress with, this project is one of the better ones out there!
Watching off and on and this thing is awesome Guys …
Wow, the ski sounds amazing.
FINALLY! YOU GUYS DID IT!!! WOOOT!
👍👌
Sounds awesome!
After studying this video, I have a suggestion that will perhaps increase the speed at the same time you utilize the pressure in the water jet, reduce the diameter of the jet nozzle by 20% it will give higher pressure out of the nozzle more speed, the V8 has the power for that.
Pump stuffing could be a problem if you over power the water intake.
Yeah he would definitely need some pressure relief valves
Insane!! Love it
Water patrol isn’t catching this guy!🤟👍😁
i love this thing!!!!
Try to talk with the florida PWC Dragracers. They may have the answer to improve the speed..
Maybe rideplate, Water intake.. Most probbably jetpump size...
They usually cut the rear lip of the hull for increase the underhull air flow for example
That’s a good idea to get some knowledge from those who know about fast skis
The actual world record is 142mph.. you are not too far 😁
The record was reached with a Yamaha 1.8 turbo and nitrous with a lot of Hp
I guess you already know about that 😊
so sick man
You should put adjustable trim tabs on it
It’s an interesting idea. I have thought that a lengthened sponson could act as a trim tab. But we’ll see
This makes me want a V8 jet ski. I've never really wanted to own a jet ski and deal with their issues. I'd love to buy a turn key LS Yamaha Jet ski.
Also… awesome job with the video/ telling the story.
Thanks I appreciate that 👍
How fast you pulled away from the other boat at speed was ridiculous.
Might be time to look at the hull on that ski, and see if the factory left any hooks in it. You have plenty of power. I would start looking into the hull and pump for your speed. If it's running too wet, it might be time to look into making the first droop snoot for a yamaha pump. Look at what the river racing jetboats, and drag racing jetboats are doing. Yes, you don't have a mixed flow pump, but many of the same principles can be applied.
I suggested something similar a while ago. But I think they (at least back then) would like to keep it to a "stock"-ish pump. Perhaps they have changed their mind.
The V8 ski sounds so sick! It seems snappier or more responsive on the throttle.
Oh! On an other note…. Was that a big fish splashing on the surface just to the right off of your starboard bow at 19:10?!😂 hahaha 🐟 it looked like a decent sized fish probably a coho salmon? At first I thought it might be an injured bird!
I think the aluminum block was a good choice!
You’re going great! Only through consistent testing will improvements be achieved and a couple of things are obvious…… it runs well, reliable and now can be benchmarked for performance improvements. Although it may seem slow to you compared to your other high performance skis, but the acceleration is staggering. Can you also consider increasing the pitch of the impeller as well. If it can accelerate quickly, you have a lot of torque in reserve. If you can increase the thrust and only loose a little acceleration the result would be a higher speed. Just thinking the limits you are hitting is not the engine gearbox package.
You need a super aggressive twisted impeller.
you might need a longer ski like a sea doo fishpro. the ski now wants to keep launching itself out of the water even at top speed! it has so much power that little setup you got there and a aircooler is a must if you want to run at those higher rpm otherwise you will cook your engine
It does want to get out of the water on the acceleration!
A Kawasaki Ultra hull may work. Its a big heavy deep v hull that would keep that hull planted instead of launching.
Tighten up your impeller to pump clearance, and drop jet nozzle diameter by 2 to 4 mm. Port the grate more. Just some thoughts. Increase propulsion.
I love my FZS and it goes plenty fast with the Riva stage 3 kit... It just lacks that V-8 sound. When you get the bugs worked out of this one, sign me up, I'll take one.... Good stuff as usual...
Cool build and footage, it would be nice to see more full pulls to top speed with the gauges. Lots of cuts and very short clips of the dash during the runs are frustrating. That said, I hope you can squeeze some more speed out of it. I wonder if the impeller pitch needs to be higher.
Did you put a straight edge on the back of the hull to see if it has a hook ?
I’m also disappointed when I go 90+ mph on a JetSki. lol 😂
By the way you were talking, I thought you had a catastrophic failure. I think this was a huge success.
You have the skills running fairly consistently, and now you can play with setup and “little” things to see what makes a difference.
Perhaps I’m missing something (probably) but the rocket like acceleration doesn’t seem ideal for top speed … seems like the pump is holding it back … Thar being said 90+ mph is VERY impressive.
It did have a catastrophic engine failure on the outgoing engine. But the new aluminum engine has been solid. It can go run low 90’s anytime the water is smooth enough. And I know we’re going to go faster once I figure a few little things out
@@JetSkiBrothers Oh yes. The previous engine failed. I kinda had that figured out already, haha.... or highly suspected.
It was nice to see a video form you, and I have no doubt that it will go faster and be interesting to follow.
What about a water/methanol injection setup? Its easy to program with the holley and works pretty good.
I'm wondering if you have reached the efficiency limit of your pump.
Where is this lake at? It's frigging gorgeous!
I think it's cool enough as is. Just keep it reliable.
Awesome!
Well done boys.
Can I have it?
Australia!
The issue comes from the ring gaps are to tight. when under boost the ring expands an has no were to go but to collapse a ring lane very common on
N/A engine that get boosted.
Maybe the pump needs more impeller or just a whole new bigger pump!
Could be but I guess we’re going to figure that out….. the hard way 😂
I don’t know but I sort of think they might not make a bigger pump at least in this form factor. Or an impeller with as much pitch as this could handle?
The ski pump yes may be taped an has no other upgrades BUT Glass work is ezy! A pump can easily be modified into the hull. They got this there on the right track.
It sick guys keep killing it!
Man... this vid is YEARS old !!!
too cool. easy for me to say, cause I didn't build it, but try to enjoy it instead of chasing a number. And if a number is what it's all about, swap that pump for a prop and then triple digits will be easy. I would ride with pride if it was mine, just like it is, awesome
Thanks, I appreciate that
Time for a higher pitch impeller !
That is awesome! Do you ride it in a drinking water reservoir?
Man it sounds sweeet💪
1:40 - Is that wise? Using a wet sump in a vehicle that is going to experience high g-loading, both from cornering and the impacts of coming off waves and jumping?
Is that the air intake above the two exhaust outlets? If so, that's a pretty small surface area to pull enough air through for a turbo V8. There's also a possibility that because of the way the air will end up with a dead spot directly behind your back, that the inlet might be sucking some hot exhaust back in to the engine.
Wet sump should be ok, just about all the forces should be directed downwards...
Yes, the air intake might be a bit of a concern, I agree. Not sure its a large problem in reality though, but its got potential to rob a bit of power, thats for sure.
It would be super cool to see Calas or BkBuilt help get this beast dialed in!
One wild ride. I can't think one screw up and you get rolled out on the water like dough under a roller. But fun!!!!
What state/lake are you guys on? Looks like a wild landscape compared to Michigan.
Washington I think. Inland "delta" kind of stuff.
Can't imagine that engine holding up at those rpms without blowing a rod through the block. Just hope you don't get hurt. Cool build
It’s fine. Basically every recreational boat 19-30ft has a GM engine that Volvo penta or mercruiser slaps their name on to
It's always a risk but we are trying to keep everything safe.
Those rods are actually very strong and live to some really high rpms. Detonation is what will make them unhappy.
@@nocturnalspecialties642 it's the top end you worry about at those RPMs on an LS when NA as well. Link bars, chain upgrade, rocker arms have weak bearings from factory. IF cam then do the springs as well.
@@N4CR I know.
I build them all the time. But only a few really high rpm builds.
how much power can you add before changing prop profile?
Feels like 120 sitting here ,
Nice hear that. I’m used to people complaining that it looks slow. So to hear it looks faster than it is, it’s nice for a change 👍
fun video
Your maxed out on Hull speed... Make it longer. You don't have to change your deposition or transom. You can have a slice running right down the middle and the hull extensions basically being tapered, C-shaped, skies that the jetski can plain on.
Read a little bit about naval engineering and hull speed and you'll understand my description.
Have ever considered chemically intercooling your ski? Also can you tell us what sofwear you are using? First time on your channal and I like wahat i see. Keep it up!
That’s a good boy right there. Your son is going to be motor freak like his dad! 👍🏻 Lol…maybe your daughter too!
What size fuel tank is on this thing ? That’s my question to know how long will the ride time be. Assuming my old seadoo rotax 90hp would guzzle all 10 gallons in 1.5hrs. Very cool build though. It’s not the destination sometimes but the journey getting g there. I love it for all intent & purposes. It’s a one off. Enough said.
This was without any intercooler at all?!?!
I had to rewind to believe it. Yah that's already impressive as it is!
Do you run PRVs on your pump?
Time for an Arneson surface drive.
Would be very hard to drive. Even in a straight line, it might very well be slower because of that.
@@GoldenCroc Surface drives beat out jetpumps unless the water is glass.
@@gonesilent2814 Hmm, I am curious where you have seen that amount of relatively high powered/high speed PWCs thats been swapped to surface drives and afterwards goes faster, easily-peasily?
So you had data you can draw the conclusion you did from, I mean.
Because I sure havent seen a single one that would fit the bill. Do you mind enlightening me, because as it stands, and considering my own experience with boats, PWC and the physics behind them, I am still very doubtful of your claim, as it would pertain to this vehicle.
Cheers mate.
@@GoldenCroc I've never seen a PWC swapped to a surface drive. I have seen shift in design over the last few years to surface drive from pump drive on the larger vessels. I don't have any data but just from what I've watched pump drive systems must be matched to the HP of the engine. You can change out the impeller to move a bigger volume of water per turn but I think your gonna hit inlet size resections long before all the HP is usable for higher top speed runs. I'm just an spectator who watches you videos. I didn't do my homework and just offer my thoughts.
@@gonesilent2814 You seem serious and sincere enough with your post (in comparison to some people that have their mind made up and just want to be right), so I will make a serious answer:
To start from the beginning, jet pumps are indeed terrible for efficincy of propulsive force, and especially for smaller vehicles. Even under-boat shaft mounted props are better. Outdrives and outboard mounted props are better again, and surface mounted props are best. So far your thinking is quite right.
But now, scroll up and take a look at my first reply to you again, it only mentions the drivability and how that would affect the top speed one could reach. #the crux is what you yourself write "larger (much heavier than this) vessels" (often sporting two surface drives, with counter rotating props, negating twinsting torque)
Surface drives and surfacing props in general can and will induce a lot of twisting torque into the hull. Enough to literally be able to flip a smaller vessel over on its side under some cicrumstances. A PWC is very much in that "small vessel category".
Secondly, a PWC is very top heavy compared to a boat. That makes it even easier for it to flip over and/or inducing oscillations known as "chine walk", Bot of which make it very hard if not impossible and certainly extremely dangerous to go fast. I would say for this hull I estimate that speed to be already at no more than 50-60 mph in a PWC hull like this, with conventional surfacing prop mounting.
A Jet drive induces very little torque, almost inconsequential. At least, when seen from the prespective that it also "sucks" the PWC down towards the water at the same time, giving it more stability.
WIth their short hull length and top heaviness, most PWCs would likely struggle mightily to break (as said above) 50-60 mph running anything but a jet drive system, not because of lack of power, but because the lack of stability would make them very hard, if not impossible to ride any faster.
So to quote myself from the first reply again: "Even in a straight line, it might very well be slower because of that."