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The interviewer knows his shit. The engineer seems slightly intimidated but holds his position confidently. This is some good motor head stuff right here! 👍
Seems staged to me, like he already knew the answer to the questions and intended to ask. More like it was a advertisement in the form of a interview..
My dude! The questions were amazing! Aggressive, high detail, yet in a way that a semi-layman can understand. He had that man on his heels, but he had the proper defense all the way. A beautiful exchange, between two people that I'm sure respected each other way more at the end of the day. I love this video.
Later that night, he was teaching her how internal combustion engines work. You know, how the pistons move up and down with the force from the bottom to the top of the cylinder wall.
Like what happens when there is alot of torque. Also speaking in regards to that ECU conversation he showed her also the high rpm redline of his engine.
No engine sound? That is sacrilege by petrolhead standards. So am off to go find the sound. Edited (jul 02/21) sound clip th-cam.com/video/XhqIGI_7dWw/w-d-xo.html
We simply don't have the time and resources to focus on engine sounds which are never as good through speakers anyway sorry gents. If we did, we'd be one of the other 50,000 channels with no tech already doing that anyway as you'll see when you have a quick search for these running 😉 Not saying we don't watch some of those channels too, just pointing out that's not our focus - Taz.
High Performance Academy Don't you pretty much just have to record it while its running on a dyno or in a car? Seems like recording those events would require a negligible amount of resources, compared to the value of the video content.
In the world of speed freaks the main goal always is more power and less weights and this gives you a V8 that will gives you 400 to 500 HP and that’s without a turbo or supercharged and all this at around 230 lbs and that is absolutely incredible 👍👍👍👍
There are Buick/Rover/Olds aluminum block stroker engines around this weight class that make that sort of power, they're around 4.6-5.2L and 275-300lbs. With ancient 2V OHV tech.
As a regular 'Murican V8-guy this was very interesting and especially cool that you and james went so far in depth on the design and not just basic "only numbers" and "scratching the surface"-marketing bullshit this kind of videos usually are all about... Thanks for very good video and a lesson, that engine is a beast!
@@slckb0y65 probably yes, but without any real benefit aside from pure speed on a straight. Motorbikes are greatly influenced in their dynamics by the engine size and design.
@Scott not always, but a fair amount of prep goes into things. People like James have a ton of knowledge to share, just a matter of trying to get it out on camera in a way that translates over to the rest of us - Taz.
I’ll say this is very cool a little v8. Wow the engineering of that is very cool. My car is 3.3l 8150rpm in-line 6. Damn this little baby puts out serious power per cubic inch. Top notch work here. It’s mental. And people may think that 40 hours warranty. That’s amazing for a race engine. I worked in NASCAR for over 8 years and we generally rebuilt the engines every race. Same deal as this gem. Basically rings and bearings and check everything for wear and look for failure of any components. Sometimes we ran 2 races on one but very rarely. So basically 5-600 race miles they were refreshed, warranty for 1500 miles or 40 hours. That’s some serious durability for a high strung race engine. Hats 🎩 off to your skill. The NASCAR engines were basically freshened up every about after 12 hours. That’s about all the time is on one after dynoing practice and race. The races are usually over in 3 hours. If we had a wreck or something else that put us out early we would run that engine the next week. WOW 🤩!!!!!!!!!! I have watched this twice so I didn’t miss anything.
Weight to power ratio in this interview was outstanding, all the harmful harmonics were eliminated with concise preparation of the questions and answers. The interview was light weight and yet very powerful with tons of information lol, thanx guys. 😜
All I'm getting here is that interviewer knows EXACTLY what's going on with that engine and is kindly guiding us ignoramus types through the design and engineering by asking excellent questions. Absolutely amazing job here. Absolutely subscribed. 👍 All the way through, absolutely top notch.
These guys need to talk to Allen Milyard he was converting Japenese motorcycle engines into V8 and V12 all done with a hacksaw back in the late 1990's and early 2000.
Much as I like what Allen has achieved over the years, I don’t think these guys need advice from him. Seems to me they have the engineering well covered if they can offer a warranty.
You mean those one-offs that aren't raced and do little other than attract novelty interest. It's not as if he invented banging a few engines together and making it work. Look up those boys in Thailand they have lots of channels where they combine moped engines into one. It works, no questions asked. But that's about as far as it goes. Reliability? Longevity? Who knows. There is no engineering to backyard engine building.
@ekspatriat you missed out. Brand names or vehicle model names are the least interesting or important part of this type of knowledge. Not everyone is into the engineering details vs just reading marketing brochures though and that's ok 😎 - Taz
Exactly. I already have a K that does 500hp reliably in race trim, no reason to go with a fragile torqueless moto based V8. Ok the sound would be better but race engine.
@@MrSuchasillygoose it's a completely different class of engine and machine. It's even explained in the video, they already knew Hayabusa engines and so when the requests for more power kept coming in, they simply doubled up the Busa heads and tied them together at the bottom. Clearly turbo wasn't an option for them, likely on grounds of reliability and heat. Of course any engine that can withstand sustained high rpm operation cannot be termed fragile, those forces scale as to the square of engine speed - motorcycle engines are very tough in their own way. Granted, if you couple a motorcycle engine with a car chassis, you're likely to destroy the transmission, clutch and primary drive (maybe even the crank and cam drive) in short order due to the massive difference in inertial forces through the drivetrain. Luckily a Radical is incredibly light by design and has small lightweight wheels etc. The driving experience offered by keeping the Busa basis is completely different, and I'll wager Radical's customers appreciate that.
@@identiticrisis It's more exotic, I give you that, and if the pockets are deep enough then a good option. There is a guy with a quarter NASCAR busa build that comes to track and blows the transmission every time. The Radical guys do not drive to the pump because it puts on hours on the engine, that's fragile in my book. Some spend 3 laps just getting the oil temp high enough so they can unlock the revs. The Radical may be light and has small wheels but it's still a two person car, the compound is soft, and has real aero. The loads on the engine at high speed are quite high. Motorcycle aero can't compare to something like a prototype, which Radical arguably is. I'm going through this with the Atom, steel tube frame, 300m axles, PPG trans, and Gear X trans all failing from aero loading. But the one thing that holds is the 500hp Honda block. It's nice to have something robust in the build.
I ride a Hayabusa 2008. Thank you Suzuki for building such an impressive machine. I have to hit the lottery to get a street car to pull like the Busa. It's down right now because I keep wearing the back tire out for some reason. Lol
I loved this interview. It made me think about the design process, when you know the theory and/or have time to iterate. Setting hard-points in a design (eg, package size, durability) then seeing what that means - eg, 72 vs 90 degree, balanced vs light and brutal. Seriously, loved this thanks.
I swear this is one of the best channels on TH-cam! Your knowledge blows me and the person you interview away! Very precise in depth analysis every time. Thank you for all your time and efforts mate cheers
@@hpa101 Not to call anyone out, but I enjoy watching people build all sorts of things, mainly things that contain some sort of combustion lol. But I watch a lot of these youtubers that build cars and whatnot, and their knowledge is laughable at times. Some of these guys couldn't tell an EGR for PCV valve lol. Cheers mate.
A friend and I talked at length about making an engine like this, however we were looking to use the Honda 1000cc V twin from the firestorm. So essentially a 4L V8 revving to about 12,000rpm using Honda internals. Wanted to fit it to a S2000 and call it a S4000. But then we got realistic, looked at costs of making the block etc and scrapped the idea. I just wish you guys had one in a car that was running so we could hear it. I would have loved to have heard it.... great interview, very informative, just missed the mark for me without seeing one who,e or hearing one run.
I would have loved to hear how they mitigated friction from the larger conrod journals. I WISH this was more technical, to say I'm disappointed is an understatement. The rpe/hartley/synergy motors are some of my favorite designs and he basically just stated what was in the rpe brochures. His description of the balance was painful, you were really prying to get him to elaborate lol. I'm sure you know this I'll state it for those that don't, the cross plane requires huge counter weights to negate the primary force imbalances. However the flat plane has secondary moment imbalances from the unbalanced piston accelerations. For a 90 degree v8 it would only be about 41% more than a stock Busa w/o balance shafts but because it's 72 degrees it's a bit more, like around 50% of course they could run balance shafts to negate this but its a race car so radical doesn't really care about the NHV and would rather lose the weight, inertia, complexity and cost. For those interested in dynamic reciprocating engine balance, I haven't found any good videos that describe the topic very well, engineering explained is the best of the worst. Only places that have done a good job is bosch's automotive handbook or better yet advanced engine technology by heinz heisler.
I too abhor Engineering explained, his overviews are so lightweight that you couldn't even call them "getting your toes wet" I remember a while back on TI (forum) people making fun of how dense his explanations of very complex and nuanced subjects.
I agree it was disappointing especially when the explanations were pushed for although I can understand it's not always easy when stood in front of a camera, it seems nerves led to fast responses with little more to add. Still interesting overall
that's what colleges and universities are for. TH-cam videos have entertainment as priority with some knowledge thrown in. A textbook style presentation would put everyone to sleep. In fact, I recall some uni students literally falling asleep during lectures.
I don't know if he did something on this specific topic, but for more technical content I recommend "The Workshop". Hes a rude british dude, but makes good and informative videos about motorcycles and the engineering behind it.
@@aiGeis Its a double edged sword. Its nice that he can explain things for everyone to understand but for those of us that want more, he barely touches the bases.
This channel is an absolute standout amongst the automotive tech channel genre. Andre's interviewing style and his in depth knowledge makes all his videos enjoyable, understandable and educational. Thanks Andre and the HPA crew. P.S. I always liked the idea of the RPE-V8 engines and this video has consolidated my view.
Cheers mate! All comes down to having people like James keen to have a camera on him to answer the questions as well haha Do you like podcasts? Heard ours? It's like this, but longer with similar guests. I think you'll enjoy them: www.hpa-tunedin.com/ - Taz.
These are very well thought out, educated & knowlegeable questions on very specific engine stuff that only the true hardcore engine enthusiast would understand. Well done, sir.
The 72 degree firing affects the various harmonics, and then going to a flat plane. This must be well tuned and very strong, quite a feat in design and engineering. Over 500 sold…
Nice interview. You grilled that guy on some hard questions people may be concerned about (billet vs. cast, maintenance, resonance, etc.) and he explained perfectly why their motor is an excellent option. Great job by the two of you, a very interesting option for kit cars and I look forward to learning more about this type of setup 👍
It’s a shame that it’s still to long as to not hang out the back of my still stock bodied ‘58. This thing would be cool if you made a tube chassis with a trans that could handle that high RPM! A Baja bug or dune buggy would be much easier
Got to ride in an SR3 on track and had wanted to buy one because you can find older ones for a reasonable price. Thought it was absolutely mental and could barely hold my head straight up. Can't even imagine this engine!
Great interview. (I watched it right through and I'm not a mechanical guy.) Simple, direct, relevant questions and simple, direct, relevant answers from two intelligent well-informed guys. Thank you gentlemen. Damn. That's one impressive engine. Australia
MajesticDemonLord A power cruiser in an x-diavel or Triumph Rocket kinda style with this engine would be sick. If it had decent traction control/anti-wheelie they’d sell a boat load in the states purely on quarter mile times.
Steve Harvey's secret "biker" love child 650IB be on that two wheeled super tanker for the "epic" ? street racing smack downs and the comedy track days while squawking like a six year old in a sweet shop.....sorry candy store must be them far to small Dainese/Alpine star race panties and the super"lite" custom carbon fibre racing codpiece ....fitted by a "dude" as 650ib don't do hands on with the toys.
As a Suzuki fan, I watched, and was blown away with the details, all the trial and error that must have went into making, and perfecting that engine. Always thought motorcycle heads were the only true hemis. P.S. Let those who all they want to hear is it's sound, go to a track and hear one. Thanks for taking the time to produce and post a great, informing video.
So they turned one of these end on and attached it to a Mercury Racing MKIV F1 outboard leg and put it on the back of an F1 Tunnel boat it was awesome to see and hear!
Richard Garriga I fuckin doubt it.... At least the DFV isn’t plagued with issues and unbalanced parts... Building vibration into an engine, how stupid.
Cosworth isn’t Ford, Just like Shelby isn’t Ford either. Ford innovation and Ford Racing is an oxymoron. Chevy...ah hem, Racing is in-house and continues to win after Ford leaves and opens the track back up after hogging it to themselves all day. lol
“Hello, Suzuki? I’ve got an engine for your next generation Kizashi....” But seriously... Throw this bad boy in a mass produced Kizashi. Audi RS4 killer. Subaru WRX killer. Mitsubishi EVO killer.
@Marc Jackson that's even worse, no engine should last for less than one race! But 40 hours for a race engine isn't bad, especially if you can just do rings and bearings and be back at it. I think the biggest problem with this design is the bank angle. Should have stuck with the 90* bank angle for balance, would have let them run lighter parts and therefore rev higher.
I'm a car guy, but I love how revvy bike engines are,. Putting bike engines into small and light cars are some of my favourite swaps. So it would be awesome to have a motorbike manufacturer produce an actual "car" engine, that obviously is very unlikely to happen, so this is neat.
In fact some early Toyota performance cars engine, For example “4AGE" "1JZ" "2JZ",It is designed and manufactured by Yamaha, they are very legendary engine and has powerful performance.And Toyota actually owns many shares of Yamaha,And Yamaha Also invested in Formula One race, Also designed cars produced by Toyota"OX99-11"
Mr. Millyard must be jealous of all the r&d RPE can do. I wish i could get him to build me a gpz750 v8= v8 1500cc air cooled 2valve per engine. Damn itd sound good
@@anomilumiimulimona2924 nah he already built a 5cyl 2stroke i want the air cooled 4stroke 750 v8. But yeah he is a rocket scientist who build stuff in his garage so dont think he takes commissions . Or at least that i can afford
I love being a gearhead that can appreciate a high revving flat plane crank V8 or an ancient muscle car design cross plane big block muscle car V8. So many cool engines are out there
Excellent interview . Very unusual to hear an interviewer that clearly knows what he's on about too. I run a 400 rwhp charged busa road/sprint bike so found this really interesting. Add 1 sub from England
Cheers Herman! Yes well aware, and it's clearly in the description but Andre just worded it a little poorly at the time in hindsight. We didn't really think anyone would stress about the wording there to be honest but the internet is full of surprises XD - Taz.
This is a super cool engine I have been curious about for a few years so thanks for doing an episode on it. A few questions. Why use alloy cylinder sleeves instead of steel like a LS? Why not use Alloy rods at that RPM and power level? It would run with less vibration and lower rotating mass. Also whats the cam and valve set up? They should make the Crankcase out of billet and steel sleeve it so it could run with power adders and then sell it as a crate engine.
Alloy rods need significantly more material so in a tight 72 degree bank its possible that it would run into something, also the rod would never last ass long a steel or titanium one, as far as sleeves go thats mainly due to weight and rigidity. as far as cam info just look up stock hayabusa cylinder heads
The sleeves have a friction reducing coating and the rings are 1mm steel that have a PVD coating also. With sleeve and piston made of similar material because expansion is the same amounts it can be less clearances of piston to bore. With liners made from steel it expansion rate is different so aluminium pistons need bigger clearances. The heads on gen2 Busa have titanium valves and under 9mm lift from camshafts. Valve train is very lightweight.
Slip of the tongue sorry gents! We're going to have to fire him 😅 To be fair Suzuki is mentioned multiple times in the video description 😉 - Taz. #pleaseforgiveus
These guys aren’t the first to build a hayabusa v8. Neil Gray from NZ, designed and built one of these 15 ish years ago, created a car to go around the engine, not sure if this is the result of his work or not. There was an article in the “Wheels” magazine early 2000s on him and the whole kit and caboodle❤
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I would love to have this in a Civic😁
How much does it weigh?
Every catheram
it's cool that engines are getting small :)
This is the V8 swap that every Miata needs 😎🥳
Exactly my thoughts
Same, small displacement and high RPMs suits the Miata's character!
Miata is too heavy...
@@MickH60 cappuccino maybe?
I gotta 93 Hilux I would ❤️ to put that in!🔥🔥🔥
The interviewer knows his shit. The engineer seems slightly intimidated but holds his position confidently. This is some good motor head stuff right here! 👍
Total agreement with your post.
I love the way they interact about critical details of the design and construction that many "tuners" overlook or ignore...
"hayabusa dont make a V8"
He didnt even know suzuki makes the engine lol
Seems staged to me, like he already knew the answer to the questions and intended to ask. More like it was a advertisement in the form of a interview..
VERY underrated brand, thanks Radical for your lightweight cars!
My dude! The questions were amazing! Aggressive, high detail, yet in a way that a semi-layman can understand. He had that man on his heels, but he had the proper defense all the way. A beautiful exchange, between two people that I'm sure respected each other way more at the end of the day. I love this video.
Also, as someone who is in the industry, open up to camera. A good rule of thumb, if you can see both shoulders you're doing okay.
Last time this guy went on a date, he spent an hour talking about ECUs. And then he gave the girl a Doug Score.
a Doug Score, AHHAHAHHHHHHAHAHAHAHHAHAHAH
I believe he was mainly talking about timing and piston clearance. ;)
Later that night, he was teaching her how internal combustion engines work. You know, how the pistons move up and down with the force from the bottom to the top of the cylinder wall.
Like what happens when there is alot of torque. Also speaking in regards to that ECU conversation he showed her also the high rpm redline of his engine.
And his gf misfired on him
No engine sound? That is sacrilege by petrolhead standards. So am off to go find the sound. Edited (jul 02/21) sound clip th-cam.com/video/XhqIGI_7dWw/w-d-xo.html
This channel is more tech talk, I complained too when it was about the mclaren mp4 f1 car
We simply don't have the time and resources to focus on engine sounds which are never as good through speakers anyway sorry gents. If we did, we'd be one of the other 50,000 channels with no tech already doing that anyway as you'll see when you have a quick search for these running 😉
Not saying we don't watch some of those channels too, just pointing out that's not our focus - Taz.
It's not built by Radical but I expect it's pretty much the same sound - th-cam.com/video/vkDer8mQxUU/w-d-xo.html
High Performance Academy Don't you pretty much just have to record it while its running on a dyno or in a car? Seems like recording those events would require a negligible amount of resources, compared to the value of the video content.
@@sciencemilitia1853 yeah when we can get good audio we do. Often we can't :)
In the world of speed freaks the main goal always is more power and less weights and this gives you a V8 that will gives you 400 to 500 HP and that’s without a turbo or supercharged and all this at around 230 lbs and that is absolutely incredible 👍👍👍👍
@Hulagan 808 The 3.3L has 520HP and 280Ft-Lbs Tourqe.
To put that in perspective, F1 v10s used to make 900hp with just over 100 pounds. Those V8s are about the limit you can get in a road car.
A high performance V8 that only produces 400 to 500 hp at 10000 rpm? Why would you want that?
There are Buick/Rover/Olds aluminum block stroker engines around this weight class that make that sort of power, they're around 4.6-5.2L and 275-300lbs. With ancient 2V OHV tech.
Indeed, must be a very peppy and responsive engine.
As a regular 'Murican V8-guy this was very interesting and especially cool that you and james went so far in depth on the design and not just basic "only numbers" and "scratching the surface"-marketing bullshit this kind of videos usually are all about... Thanks for very good video and a lesson, that engine is a beast!
You don't realise how compact this motor is until you see it next to someone.
The RPE team certainly nailed that design goal - Taz
@@hpa101 question is, could it still be fitted to a (modified) bike ?
@@slckb0y65 probably yes, but without any real benefit aside from pure speed on a straight. Motorbikes are greatly influenced in their dynamics by the engine size and design.
L Taka it’s insane
I was just saying that ... very compacted
Andre is excellent with prepared questions and keeping the discussion going. Great channel here
Actually, he doens't interact with the answers... He just goes on to the next question..
James F totally agree, defiantly the right guy for the job
Thanks James! Appreciate the support - Taz.
He knows the answer before he asks the question.
@Scott not always, but a fair amount of prep goes into things. People like James have a ton of knowledge to share, just a matter of trying to get it out on camera in a way that translates over to the rest of us - Taz.
I’ll say this is very cool a little v8. Wow the engineering of that is very cool. My car is 3.3l 8150rpm in-line 6. Damn this little baby puts out serious power per cubic inch. Top notch work here. It’s mental. And people may think that 40 hours warranty. That’s amazing for a race engine. I worked in NASCAR for over 8 years and we generally rebuilt the engines every race. Same deal as this gem. Basically rings and bearings and check everything for wear and look for failure of any components. Sometimes we ran 2 races on one but very rarely. So basically 5-600 race miles they were refreshed, warranty for 1500 miles or 40 hours. That’s some serious durability for a high strung race engine. Hats 🎩 off to your skill. The NASCAR engines were basically freshened up every about after 12 hours. That’s about all the time is on one after dynoing practice and race. The races are usually over in 3 hours. If we had a wreck or something else that put us out early we would run that engine the next week. WOW 🤩!!!!!!!!!! I have watched this twice so I didn’t miss anything.
All things. That’s how you WIN races. If ya aint learning, ya DEAD…….. In the water!!!
Two knowledgeable people make a interesting interview
Zero fluff. All answers.
My thoughts exactly. As an engine builder I enjoyed the knowledge on both sides.
Weight to power ratio in this interview was outstanding, all the harmful harmonics were eliminated with concise preparation of the questions and answers. The interview was light weight and yet very powerful with tons of information lol, thanx guys. 😜
All I'm getting here is that interviewer knows EXACTLY what's going on with that engine and is kindly guiding us ignoramus types through the design and engineering by asking excellent questions. Absolutely amazing job here. Absolutely subscribed. 👍 All the way through, absolutely top notch.
These guys need to talk to Allen Milyard he was converting Japenese motorcycle engines into V8 and V12 all done with a hacksaw back in the late 1990's and early 2000.
Exactly!
Much as I like what Allen has achieved over the years, I don’t think these guys need advice from him. Seems to me they have the engineering well covered if they can offer a warranty.
You mean those one-offs that aren't raced and do little other than attract novelty interest. It's not as if he invented banging a few engines together and making it work. Look up those boys in Thailand they have lots of channels where they combine moped engines into one. It works, no questions asked. But that's about as far as it goes. Reliability? Longevity? Who knows. There is no engineering to backyard engine building.
@@butwait ". There is no engineering to backyard engine building." Where do you think all of our toys come from? That's right backyard engineering.
what milyard does is clever ,but he is making road engines ,not race engines two totally different things
The interviewer did an amazing job asking his questions.
Amazing. Interviewer put matey under bare pressure with questions. Get lots of good info out of this. 👍🏻
The interviewer did a fantastic job of asking questions and explaining things. I am quite impressed.
He mentioned Hyabusa as a manufacturer that's when I stopped listening.
@ekspatriat you missed out. Brand names or vehicle model names are the least interesting or important part of this type of knowledge.
Not everyone is into the engineering details vs just reading marketing brochures though and that's ok 😎 - Taz
i love this engine....i've always wanted to do a 4 to 4.4 liter V8 based on the Honda K20 heads :D
supersevenn Me too! K40 😁
There is a guy whos been working on it for 5yrs already. Should be out soon
Exactly. I already have a K that does 500hp reliably in race trim, no reason to go with a fragile torqueless moto based V8. Ok the sound would be better but race engine.
@@MrSuchasillygoose it's a completely different class of engine and machine. It's even explained in the video, they already knew Hayabusa engines and so when the requests for more power kept coming in, they simply doubled up the Busa heads and tied them together at the bottom. Clearly turbo wasn't an option for them, likely on grounds of reliability and heat. Of course any engine that can withstand sustained high rpm operation cannot be termed fragile, those forces scale as to the square of engine speed - motorcycle engines are very tough in their own way. Granted, if you couple a motorcycle engine with a car chassis, you're likely to destroy the transmission, clutch and primary drive (maybe even the crank and cam drive) in short order due to the massive difference in inertial forces through the drivetrain. Luckily a Radical is incredibly light by design and has small lightweight wheels etc. The driving experience offered by keeping the Busa basis is completely different, and I'll wager Radical's customers appreciate that.
@@identiticrisis It's more exotic, I give you that, and if the pockets are deep enough then a good option. There is a guy with a quarter NASCAR busa build that comes to track and blows the transmission every time. The Radical guys do not drive to the pump because it puts on hours on the engine, that's fragile in my book. Some spend 3 laps just getting the oil temp high enough so they can unlock the revs. The Radical may be light and has small wheels but it's still a two person car, the compound is soft, and has real aero. The loads on the engine at high speed are quite high. Motorcycle aero can't compare to something like a prototype, which Radical arguably is. I'm going through this with the Atom, steel tube frame, 300m axles, PPG trans, and Gear X trans all failing from aero loading. But the one thing that holds is the 500hp Honda block. It's nice to have something robust in the build.
I ride a Hayabusa 2008. Thank you Suzuki for building such an impressive machine. I have to hit the lottery to get a street car to pull like the Busa. It's down right now because I keep wearing the back tire out for some reason. Lol
I loved this interview. It made me think about the design process, when you know the theory and/or have time to iterate. Setting hard-points in a design (eg, package size, durability) then seeing what that means - eg, 72 vs 90 degree, balanced vs light and brutal. Seriously, loved this thanks.
I swear this is one of the best channels on TH-cam! Your knowledge blows me and the person you interview away! Very precise in depth analysis every time. Thank you for all your time and efforts mate cheers
Well done James you did Radical proud with those knowledgeable answers. Nice to see this british engineering
Can't tell you how much I love a host that knows wtf he's talking about, you earned my sub for sure.
Cheers Will! - Taz.
@@hpa101 Not to call anyone out, but I enjoy watching people build all sorts of things, mainly things that contain some sort of combustion lol. But I watch a lot of these youtubers that build cars and whatnot, and their knowledge is laughable at times. Some of these guys couldn't tell an EGR for PCV valve lol. Cheers mate.
A friend and I talked at length about making an engine like this, however we were looking to use the Honda 1000cc V twin from the firestorm. So essentially a 4L V8 revving to about 12,000rpm using Honda internals. Wanted to fit it to a S2000 and call it a S4000. But then we got realistic, looked at costs of making the block etc and scrapped the idea. I just wish you guys had one in a car that was running so we could hear it. I would have loved to have heard it.... great interview, very informative, just missed the mark for me without seeing one who,e or hearing one run.
Hear V8 busa here
th-cam.com/video/FkCzjzodUXw/w-d-xo.html
What a great interview, no filler just heaps of clear questions and answers from two very knowledgeable people.
Cheers Craig, glad you enjoyed it =) - Taz.
I would have loved to hear how they mitigated friction from the larger conrod journals. I WISH this was more technical, to say I'm disappointed is an understatement. The rpe/hartley/synergy motors are some of my favorite designs and he basically just stated what was in the rpe brochures. His description of the balance was painful, you were really prying to get him to elaborate lol. I'm sure you know this I'll state it for those that don't, the cross plane requires huge counter weights to negate the primary force imbalances. However the flat plane has secondary moment imbalances from the unbalanced piston accelerations. For a 90 degree v8 it would only be about 41% more than a stock Busa w/o balance shafts but because it's 72 degrees it's a bit more, like around 50% of course they could run balance shafts to negate this but its a race car so radical doesn't really care about the NHV and would rather lose the weight, inertia, complexity and cost.
For those interested in dynamic reciprocating engine balance, I haven't found any good videos that describe the topic very well, engineering explained is the best of the worst. Only places that have done a good job is bosch's automotive handbook or better yet advanced engine technology by heinz heisler.
I too abhor Engineering explained, his overviews are so lightweight that you couldn't even call them "getting your toes wet"
I remember a while back on TI (forum) people making fun of how dense his explanations of very complex and nuanced subjects.
I agree it was disappointing especially when the explanations were pushed for although I can understand it's not always easy when stood in front of a camera, it seems nerves led to fast responses with little more to add.
Still interesting overall
that's what colleges and universities are for. TH-cam videos have entertainment as priority with some knowledge thrown in. A textbook style presentation would put everyone to sleep. In fact, I recall some uni students literally falling asleep during lectures.
I don't know if he did something on this specific topic, but for more technical content I recommend "The Workshop".
Hes a rude british dude, but makes good and informative videos about motorcycles and the engineering behind it.
@@aiGeis Its a double edged sword. Its nice that he can explain things for everyone to understand but for those of us that want more, he barely touches the bases.
The depth of this conversation is astonishing. Great video.
Be nice to hear one running. Bet it sounds like it's a race going on all by itself..
This channel is an absolute standout amongst the automotive tech channel genre.
Andre's interviewing style and his in depth knowledge makes all his videos enjoyable, understandable and educational.
Thanks Andre and the HPA crew.
P.S. I always liked the idea of the RPE-V8 engines and this video has consolidated my view.
Cheers Mac, appreciate the kind words and support! We're not perfect but we try our best to hold a good standard for you guys 😎- Taz.
awesome engine, and great interview. I love that your asking technical questions rather than the usual you tube, "this is so awesome" and that is it.
Cheers mate! All comes down to having people like James keen to have a camera on him to answer the questions as well haha
Do you like podcasts? Heard ours? It's like this, but longer with similar guests. I think you'll enjoy them: www.hpa-tunedin.com/ - Taz.
I like this interview- the reporter really pressed the engineer for clearity for the limitations of the design he represents.
That was an awesome watch, very concise and interesting interview, cheers!👍👍👍
These are very well thought out, educated & knowlegeable questions on very specific engine stuff that only the true hardcore engine enthusiast would understand. Well done, sir.
The 72 degree firing affects the various harmonics, and then going to a flat plane. This must be well tuned and very strong, quite a feat in design and engineering. Over 500 sold…
Nice interview. You grilled that guy on some hard questions people may be concerned about (billet vs. cast, maintenance, resonance, etc.) and he explained perfectly why their motor is an excellent option. Great job by the two of you, a very interesting option for kit cars and I look forward to learning more about this type of setup 👍
And bolts straight back into the busa...
Linden Twyman with turbo...
Ahahaha now wouldnt that be nice!?
That would be my dream lego set lol
Nor Dic and make it two
now you talking my language amigo!
this motor has been around for years, but this is the first time anyone has gone into such depth about it, noice.
Bang on! The development started around 2002 and I believe in a production Radical by 2005. Glad you enjoyed this one =) - Taz.
Be a killer power plant for a old Volkswagen beetle.
Any engine would be great on a beetle. They weight two Celine Dions and a half and came with 30 donkeys power out the factory.
It’s a shame that it’s still to long as to not hang out the back of my still stock bodied ‘58. This thing would be cool if you made a tube chassis with a trans that could handle that high RPM! A Baja bug or dune buggy would be much easier
@@mikegreen2229 KarmenGia
Yeah they would be sweet. You just need $120,000
@@jntcustomcars Wonder if they'll take a check....
Got to ride in an SR3 on track and had wanted to buy one because you can find older ones for a reasonable price. Thought it was absolutely mental and could barely hold my head straight up. Can't even imagine this engine!
Imagine the KTM 1290r's Vtwin 1300cc motor in a v8 configuration. A 5.2L V8. And just a little bit bigger in overall size. Crazy.
5.16 liter math a little off
@@01firstlast Lmao RIP. You're right. Edited. Still would be crazy.
I'm so glad somebody picked this up and is building these engines again!
If they made a 90 degree version with a crossplane and balancer it would go great in my miata.
Hahaha after tens of thousands of dollars oh yeah no prob
Seems they introduced a lot of issues simply to create a compact package
Google Hartley v8 Miata
They do there made by GM ,Ford,Chrysler,Toyota.All have been fitted to Miata's over the years.The 4lt Toyota V8 fits well.
Both car guys and bike guys both enjoying something awesome, a small engine that revs high. Hell yeah!
Car guy here, and a small displacement, high revving engine is my favorite type of engine!
Very good interview. The interviewer was very knowledgeable and asked some really good questions 👊🏼 excellent work
Great interview. (I watched it right through and I'm not a mechanical guy.) Simple, direct, relevant questions and simple, direct, relevant answers from two intelligent well-informed guys. Thank you gentlemen. Damn. That's one impressive engine. Australia
Thanks mate! Appreciate the comment and glad you enjoyed this one too - Taz.
Dear Radical,
Can you talk Suzuki into building this engine for the next Gen of Hayabusa?
Sincerely
A Hayabusa rider.
MajesticDemonLord A power cruiser in an x-diavel or Triumph Rocket kinda style with this engine would be sick.
If it had decent traction control/anti-wheelie they’d sell a boat load in the states purely on quarter mile times.
Make it a crate engine I'd put it in a buggie
@@jadz684z Even better!
Steve Harvey's secret "biker" love child 650IB be on that two wheeled super tanker for the "epic" ? street racing smack downs and the comedy track days while squawking like a six year old in a sweet shop.....sorry candy store must be them far to small Dainese/Alpine star race panties and the super"lite" custom carbon fibre racing codpiece ....fitted by a "dude" as 650ib don't do hands on with the toys.
@@jadz684z it is a crate engine. from radical, not suzuki
As a Suzuki fan, I watched, and was blown away with the details, all the trial and error that must have went into making, and perfecting that engine. Always thought motorcycle heads were the only true hemis.
P.S. Let those who all they want to hear is it's sound, go to a track and hear one. Thanks for taking the time to produce and post a great, informing video.
The heads on the Hayabusa are called penthouse not hemis.
@@tazgrant4521 Pent roof
Amazing detailing into a great company!! Top video 👌🏻👍🏻
Thank you for your time and effort making this vid, and cheers to RPE for their time.
This thing will be wild on a turbo drag racing application....
Fwd v8 anyone 😎😎
I have seen a turbo hayabusa bike go down the drag strip. Its just mental
I'm thinking mr2 or boxster, but sure. You do you!
That's a good ideal but who could actually afford to rebuild it every ten passes and if turbo its life would be way shorter. Not a strong engine
Impressive. Didn't expect this much technical detail.
So they turned one of these end on and attached it to a Mercury Racing MKIV F1 outboard leg and put it on the back of an F1 Tunnel boat it was awesome to see and hear!
When talking about the crank it was almost like they was sparring. Very interesting vid. Thanks guys 🖒👊✌
A modern-day Ford Cosworth DFV.
Richard Garriga I fuckin doubt it.... At least the DFV isn’t plagued with issues and unbalanced parts... Building vibration into an engine, how stupid.
@Bill Zussman A DFV is an engine, not a car, lol.
Cosworth isn’t Ford, Just like Shelby isn’t Ford either.
Ford innovation and Ford Racing is an oxymoron.
Chevy...ah hem, Racing is in-house and continues to win after Ford leaves and opens the track back up after hogging it to themselves all day. lol
Great stuff! Brilliant concept. The interviewer fellow was well prepped and explained clearly the challenges unvolved.
I think it's kinda weird when he just asks and answers the question in the same sentence
Excellent interviewer. speaks very clearly. Engineers, well they are engineers
“Hello, Suzuki? I’ve got an engine for your next generation Kizashi....”
But seriously... Throw this bad boy in a mass produced Kizashi. Audi RS4 killer. Subaru WRX killer. Mitsubishi EVO killer.
@Marc Jackson ouch!
That's terrible, rebuilding it every two races.
@Marc Jackson that's even worse, no engine should last for less than one race!
But 40 hours for a race engine isn't bad, especially if you can just do rings and bearings and be back at it.
I think the biggest problem with this design is the bank angle. Should have stuck with the 90* bank angle for balance, would have let them run lighter parts and therefore rev higher.
Well this engine designed for street use would be maybe 2/3 the hp. At most.
I'm a car guy, but I love how revvy bike engines are,. Putting bike engines into small and light cars are some of my favourite swaps. So it would be awesome to have a motorbike manufacturer produce an actual "car" engine, that obviously is very unlikely to happen, so this is neat.
In fact some early Toyota performance cars engine, For example “4AGE" "1JZ" "2JZ",It is designed and manufactured by Yamaha, they are very legendary engine and has powerful performance.And Toyota actually owns many shares of Yamaha,And Yamaha Also invested in Formula One race, Also designed cars produced by Toyota"OX99-11"
Mr. Millyard must be jealous of all the r&d RPE can do. I wish i could get him to build me a gpz750 v8= v8 1500cc air cooled 2valve per engine. Damn itd sound good
Deftones Dsm, Itd be better with 750gt watercooled 2strokers.
@@anomilumiimulimona2924 nah he already built a 5cyl 2stroke i want the air cooled 4stroke 750 v8. But yeah he is a rocket scientist who build stuff in his garage so dont think he takes commissions . Or at least that i can afford
@Aziryse but a different sound. Its not always about hp numbers. Its about the experience
shout out to the interviewer grilling this man on his engine.
Welcome back to all you subscribers who are quick off the mark. Let us know what you think of the RPE-V8 below 😎
High Performance Academy my mine took me to the first v8 hayabusa drag bike
They use them in national autograss worth a watch
@nathyp I was looking through some of the pics and media on RPEs FB page and saw that, awesome! Love the 'mono' pulling Mini shot, on the dirt - Taz.
@@hpa101 next time your in the UK it is definitely worth going to a meeting
This thing belongs in a small 60-mid 80s datsun.
I love being a gearhead that can appreciate a high revving flat plane crank V8 or an ancient muscle car design cross plane big block muscle car V8. So many cool engines are out there
Great informative interview but it would have been nice to see more of the engine as you talked about it.
Watching 2 guys talk was not that exciting.
What a terrific race engine....compact powerful and reliable. Perfect for any fitment. Well done on the
R n D. G'day mates.
Thank you host you did a great job explaining the tech talk and filling in the gaps putting into Layman's terms. I'm subscribed 👍
Thanks Edward! Glad you enjoyed it and I hope you enjoy the future content too - Taz.
Yeah the interviewee was so terse, thanks for filling in the gaps!
FWIW some additional B roll video showing the details being discussed would have put this video way over the top.
Excellent interview .
Very unusual to hear an interviewer that clearly knows what he's on about too.
I run a 400 rwhp charged busa road/sprint bike so found this really interesting.
Add 1 sub from England
Cheers Peter, glad you enjoyed it! - Taz.
My current dream is to put this in a Porsche 944. A beautiful driver's car and unbelievably slept on. Now just imagine that with this engine 🔥🔥🔥🔥
nice to see an Engine being called an engine not a "motur"
It's the same thing...look up the definition.
@@eduardosampoia5480 no it's really not
Excellent interview. Thank you for the great information about this engine.
Wow imagine twin turbo 1000 hp v8 hayabusa in 400 kg car.
Imagine a hayabusa
HATES PEACH HA!!! OH COME ON..... HAHAHAHA
And also a reliable one
There is so much tension between these guys. I was waiting for them to box.
I'd love to buy one of these just to put in my living room...all wired and ready for occasional runs, of course ;-)
Run exhaust baffles through a toaster
To stand next to your Bristol Centaurus presumably.?
Can I just say, that's pretty legendary that you are making 440hp on a 2.7L engine, naturally aspirated.
Rotary
@@Luke-qs2cg rotary is crap
Hayabusa don't "make anything", Suzuki does...
That motor sound so sweet at those rpm's. Awesome!
I put a jet engine in my Mustang last spring, and the chicks really dig me.
what a beaut, love to see that thing in a BMW e30 or e36
I'm happy with our f20c and k24a2 powered e30s
In my bike would be better
no tourgeu
Excellent interview as usual. I done a walk around of a Sr8 LM radical a few weeks ago. Wicked cars.
Naturally I’d love to see one swapped into a Hyabusa.....
Yea....'cos the hyabusa is so underpowered..not!
@@brian5030 it’s not underpowered at all but more power wouldn’t hurt lol.
I want to put one of these engines in my 88 Fiero real bad
hey guys try putting graphite on the sparkplug electrodes big torque gain, no joke just try it you will be very happy you did this is free info.
I would like to put the 3.2L V8 in a Pontiac Fiero
Add a kitt car body for extra points
@@Luke-qs2cg Fiero, no Firebird.
@@jareknowak8712 kit with 1 t lol, autocorrect issues
@@Luke-qs2cg i love such moments :)
That would be a waste of an engine. The Fiero isn't worthy.
Both these guys are so smart wow what a interview they did
Thanks mate! Glad you enjoyed it - Taz.
Very good, now give me the twin turbo option please.
Was hoping to see more of the parts hands-on. I am surprised given the effort they would not make it a flat-8, lower center of gravity.
He doesn’t seem to know Hyabusa isn’t a manufacturer, it’s Suzuki
Cheers Herman! Yes well aware, and it's clearly in the description but Andre just worded it a little poorly at the time in hindsight. We didn't really think anyone would stress about the wording there to be honest but the internet is full of surprises XD - Taz.
High Performance Academy lol, I get it, I was just poking fun at him
Glad we got to hear it run....
Rod to Stroke Ratio really affects the cars performance during Suck Squeeze Bang Blow
That's what she said. 😉😉😂😂😂
Not as much as people want to think.
I am a lifetime auto tech, 50 y/o. These guys are sharp.
This is a super cool engine I have been curious about for a few years so thanks for doing an episode on it. A few questions. Why use alloy cylinder sleeves instead of steel like a LS? Why not use Alloy rods at that RPM and power level? It would run with less vibration and lower rotating mass. Also whats the cam and valve set up? They should make the Crankcase out of billet and steel sleeve it so it could run with power adders and then sell it as a crate engine.
Alloy rods need significantly more material so in a tight 72 degree bank its possible that it would run into something, also the rod would never last ass long a steel or titanium one, as far as sleeves go thats mainly due to weight and rigidity. as far as cam info just look up stock hayabusa cylinder heads
The sleeves have a friction reducing coating and the rings are 1mm steel that have a PVD coating also. With sleeve and piston made of similar material because expansion is the same amounts it can be less clearances of piston to bore. With liners made from steel it expansion rate is different so aluminium pistons need bigger clearances. The heads on gen2 Busa have titanium valves and under 9mm lift from camshafts. Valve train is very lightweight.
woooooooooo 2.6L V8 hayabusa 10.500RPM woooooo interesting mix that engine has to have a spectacular sound turning at those revs despite being a 2.6L
This dude looks like Lucifer from Supernatural!
Talented interviewer. Very cool stuff!
How much horsepower does the 3.0 and 3.2 make?
The new crankshaft must be incredible to behold
1:20 ish "Hayabusa don't make a V8" That would be Suzuki......
I got stuck on that too, guy isn't really that briefed
this
Slip of the tongue sorry gents! We're going to have to fire him 😅
To be fair Suzuki is mentioned multiple times in the video description 😉 - Taz. #pleaseforgiveus
Yes Suzuki makes it but only for the hayabusa. So it is always been called a busa motor.
These guys aren’t the first to build a hayabusa v8. Neil Gray from NZ, designed and built one of these 15 ish years ago, created a car to go around the engine, not sure if this is the result of his work or not. There was an article in the “Wheels” magazine early 2000s on him and the whole kit and caboodle❤