Honda K20 / K24 - What makes it GREAT? ICONIC ENGINES #11
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- Опубликовано: 28 сен 2024
- Welcome to the dark side. We have airflow, an amazing intake port design, an incredible aftermarket. Coming soon, to a swap near you - the Honda K20 and K24
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So first, a bit of history. The K20 first appeared in 2001, very soon after Honda's F20C engine that heralded many of the amazing technologies we would see in the K20. The first cars to get the K20 engine in 2001 were the JDM EP3 Civic Type R and the Integra Type R. Europe got the K20 in the same year in their version of the Civic Type R. Australia and New Zealand got their K20 in 2002 in their Honda Integra Type R. USA got it's first K20 engines in 2002 as well, in the Acura RSX and the Civic Si. The first K24 engines also appeared in 2002 in the Honda CR-V and the JDM Accord Type S. Very soon after this the K20 and K24 engines spread like wildfire throughout the Honda model range, powering much of it's vehicles (anything from the Honda Odyssey to the Honda FR-V and many cars in between)
Today, 19 years after it's introduction the Honda K20 and K24 engines are still as popular as ever, surrounded by an incredible aftermarket, enthusiasts, tuners and racers all around the world seem to be creating ever more impressive builds. This is likely the greatest testament to the brilliance of this engine's design.
But not all K20 and K24 engines are the same. They differ between each other substantially and can be divided into performance and economy versions on the K20 and K24. The performance and economy versions are different from the very core. Inside a k20a3 engine for example you will find a forged steel crankshaft, while inside a k20a2 or a k20z1 or k20z3 engine you will find a forged steel crankshaft that is also fully counterweighted, something that's important if you want so spend a lot of time in high rev range. The connecting rods and pistons are different too. Performance k20 and k24 conrods are beefier with a higher tensile strength. Pistons are cast and have molybdenum coated skirts in all k engines, but they feature noticeably larger domes for higher compression in performance k20 and k24 Honda engines.
But perhaps the biggest different is in the v-tec system of these engines. Both performance and economy honda k20 and k24 engines feature i-vtec, which adds intelligence to v-tec. In reality it adds camshaft phasing, the ability to advance or retard camshaft timing based on various inputs given to the engine's ECU. Now performance i-vtec features has three two different camshaft profiles, a mild one for low rpms and an aggressive one with higher camshaft duration and lift for higher rpms. In addition to this it has VTC, which is the variable camshaft timing we already explained and described. In contrast to this economy ivtec functions in a different way. At low rpms in opens just one intake valve fully and the other only slightly to prevent fuel from pooling behind the valve, this saves fuel and improves emissions. At higher rpms both valves are opened, but lift and duration remains unchanged. Also, economy i-vtec doesn't have VTC and has nothing variable on the exhaust valves.
Another important feature of the Honda k20 and k24 is a narrower valve included angle, compared to older Honda performance engines such as the B16 or B18. This enabled engineers to design an optimal intake port shape and maximize airflow. Stock K20 heads are capable of flowing 290-300 cfm, which is more than impressive. The other reason why k20 and k24 heads flow so well is the size of their intake and exhaust valves. k20 engines come with 35 mm intake and 30 mm exhaust valves, while in some k24 you will find 35 mm diameter intake and 31 mm diameter exhaust valves on some k24 engines.
The potential of the k20 and k24 means that k-swaps are everywhere now, and people have ventured well beyond the usual k20 / k24 into ek, ef, eg, civic or da integra. Nowadays k20 are often making into rwd chassis cars too.
When it comes to naturally aspirated tuning, the k20 and k24 engines are one of the few engines capable of reaching 300hp with relative ease (it's not easy) and can generate as much as 500 NA hp if you're crazy enough. But of course everyone's into forced induction nowadays and turbo k20 and k24 as well as supercharged ones abound. Bolt on kits are everywhere and you can build pretty much anything, the only limits are the thickness of your wallet and the sky. "Safe" turbo power for a stock k20 or k24 block is around 300 hp, but many people have gone beyond that, whether it's on borrowed time or not, really depends mostly on your tuning. If you're willing to spend on forged pistons and maybe even reinforce the block with some block guards, upgraded fasteners and ductile sleeves the k20 / k24 is ready to take you beyond 1000 hp.
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turned off pornhub for this
Putting a k 24 erforma ce engi e in a starlet
bro, thanks for all the data. i was honestly considering subbing, but the rap earned the bell lmao! italian supremacy, still honors the japanese, no shame.
You will not gain as much as 30 hp from intake and exhaust change. To gain that n/a hp. You have to change cams.
Will like to know about the k series intake manifolds which one is the better one for application turbochargers
theres an article interviewing Francesco Morettini, ferrari's chief engineer. when asked which engine he liked from another manufacturer, he said the s2000's power plant, and that it was "truly remarkable".
Didn't know that, appreciate the info as I can use it in my future videos. Thank you
After all the s2000 f20c engine had the highest hp\l until Ferrari 458 came on the market
Well obviously as at the point of that interview, it was the highest HP NA 4-cylinder ever made.. But the K-series is very similar in design only it was built for a different platform. Had the K20 or K24 been in the S2K, it would have easily been able to achieve the same HP numbers. The K20A out of the ITR or K24A2 can make 230whp with just bolt ons, and that like 260-270 crank HP. Im making 265whp with a ported K20a2 head with ported RBC and 74mm TB and k24a2 stock block. Stock Pistons, Cams, Supertech valvetrain, 40*VTC.. Bolt ons are just full 3 inch custom exhaust with custom big-tube 4-2-1 header and 4 inch custom CAI. Im running RDX injectors.. I have a 8600 redline more for safety reasons and reliability as I could probably go to 9K if I really wanted to.
@@golf1diesel ..Please dont speak of the 458.until i get one..
@@golf1diesel Nissan's "SR16VE N1" engine was 125HP/litre (1.6 16v NeoVVL NA @200HP and 181Nm) in 1997-98 in the Pulsar VZ-R N1
After watching this vid. Ive decided to swap out the Arc reactor out of my Mark IV for a K20
Ok tony
😂😂😂😂😂
Ok, Tony Stank
Wise
Choice.
Acura master class
Tony made a k20 in a cave! With a box of scraps overnight from Japan!
As a owner of a 2005 tsx is amazing how good and strong after 15 years later it still runs like new
Im an 05 Tsx owner myself, I love my car
2012 Si here. 470k km and still going strong.
@@marc-oliviercabot3380 Before VTEC, consistently?
@@skvltdmedia Don't quite well understand the question but it was my daily drive/track car. Some mods and a tune. Sees VTEC often. :) Now it sleeps in the garage and occasionnally plays outside when the weather is good. I love that car.
2009 tsx owner here k24z3 still running strong
Now that you did the K20/K24 episode, you'll have to do the F20C episode at some point...
Basically the same, but with better intake, header and a bit more aggressive camshaft. The bottom end look a lot like a mix of a H22 and a K20, with a Kseries style head.
Man I wish I had this info when I was younger and fixed up my Honda. These types of videos are what makes RUclips priceless for me. So much free information.
Asked an engine build specialist what I'd the best engine. "Honda" he said. Reliable, durable, high rpm, and lots of power.
It’s very hard to beat the bang for the buck.
It's hard to say who's the best... If we're talking about consumer engines, then yes Honda and Toyota. If we're talking Motorsports, the most race successful engines are from Porsche and BMW...........Best All around engine manufacturer, maybe Porsche.........
@@MiguelGarcia-vj7oo i disagree. honda is good all around. matter of fact, as consumer street race if you look up GTR texas killer no other car on street could beat it. it pushes around 2000hp - viper, corvette porche couldnt beat it. then the honda known as frustateeg spank it. didnt cost no more than 20k.
@@BlueRice UGR Lambo
or 2JZ
First I watched the 4AGE and wanted to build some of that Cosworth inspired goodness. But then I watched your 2ZZGE video and decided I couldn't resist the newer tech improvements. Now I've watched this and I'm making room in the garage for the K20 I want to build. Will you stop making these great videos so I can get started!?! (also just had to go back and thumbs up all these since I watched them in order on auto play (even watched a bunch of ads just to help the revenue!) Thanks for the great vids!)
BTW - it may not be iconic, but I'd love to hear what you think about the miata BPw4 motor.
stay far far away from k series. horrid engines. sacramento engine shop,. we had over 30 roll thru in the 3ish weeks i worked there all under 400hp. reheated shit if youre looking for power. also i assembled a few of the "stock block 500hp" k24s. nope. everything weisco. usually a cnc block too if theyre over 500
@@rattyratstuff7125 OK, I appreciate that real world advice. thanks.
@@rattyratstuff7125 dont spread miss Information. I build these for a living and your very wrong lol
@@Alexbuilt if you built them for a living. As in built high power drag. You'd know they pop like dollar store balloons.
@@rattyratstuff7125 I've done countless k series over the 1000whp mark lol.
Like the video. Honda has done a good job with the kseries. The last of the great Na 4cylinders. R. I. P Na cars as turbo has now taken over
I agree ... i owned multiple hondas before ... from the crx vtec to the eg6 ,ek4,dc5, ep3 ,fn2 those where awsome cars ❤ but as u said yes its the turbo era now
As a lifelong rotary guy, I’ve become a huge fan of the K24. The RSX from That Racing Channel is an absolute weapon. What’s astonishing is that those engines can make quite a bit more power.
You have three options with the k series
K20
K20/24 Frankenstein
K24
All three options are recommended. 👍
But which is best?
@@mixmixed.comics3002 K20 is the most fun. I prefer it to K24 or K24/K20 Frank. The plain old high-revving K20 gives the most traditional Honda feeling of chasing the redline. :) K24/K20 Frank is a lot more torquey, but I didn't feel it was actually more fun to drive.
(Plus you "should" really lower the rev limiter to 7500rpm on K24/20 engines if you want the engine to last -- it has a MUCH longer stroke after all. Where a K20 is quite happy at the official max 8600rpm or even 9000rpm... Whereas Revving a K24 to 8600rpm is equivalent to revving a K20 to 10,000rpm!)
the k series is very affordable now, most people would seek the k20, but i prefer the k24 from an acura tsx. i have an 06 accord 5 speed manual with the "economy" k24a8 and an toyota ae92 with the 4age. the accord is my daily beater and i took it anywhere , i took trips to sf and back which is 420 miles from me. car never give me any problem, run smoothly like a charm, mpg was fanstatic once i got on the freeway( average 33-35 mpg at 75-80mph), in town around 22-24. i did a couple poor man mod for the motor, swapping the intake manifold, throttle body from an acura tsx k24a2( i think), exhaust header from dc sports and cai( not short ram). and it does give it a very noticeable throttle respond. the ae92 is my toy, i drive it on my days off, and i can go anywhere with it also but the accord is the best car interm of comfy,mpg and also fun ( with my poor man mods) to drive. maybe the ae92 give me a little bit more smiles while reving it up but the accord really give u that comfy and torquie feeling on a long drive.
09 TSX owner here. This video was honestly really educational and I enjoyed it. Ngl I always wondered why my TSX would rev up to 3K RPMs lol
I’m a Honda guy 15 years now. This is a great video bro. 🤙🏼🤙🏼🤙🏼
The problem with k20 in beginning was a few reasons: fuel system didn't have a return. Bottom end was weaker than B16. Also, they weren't compatible with older cars since they spun same direction as most manufacture (unlike previous hondas that spun opposite of most manufactured engines). They didn't have converted kits (such as engine mounts) to stick them in older civics. Few people understood how to tune them with VTC (alot of early tuners disabled the system)
Now the plus side K20A2 ( usa Rsx-s) head breathed incredible well.(port and polish only to be done in extreme tuning cases). Timing chains instead of timing belts (no longer had to be afraid of timing belt breaking and completely trashing engine). Once tuners figured out how to tune using VTC. You no longer had to adjust cam phase via loosing bolts on cam pulley, adjust it and tightened bolts. This variable cam phase via Vtc made a high tune engine run better through out the range of rpms.
Also, because the head breathed so well on K20A2, a simple cold air intake could give you over 5٪ more power in mid to high rpms.
My first car was a base rsx with a K20A3. Wasn't fast but was a quality engine that sounded great, was reliable and had solid fuel economy. I was able to get into plenty of trouble with just 160hp
Really really enjoyed the K20Z3 especially, and driving my 2006 Civic Si for nearly 7 years.
Moving on to an AP1 S2000 and the F-series, it definitely felt like a more raw experience, more akin to the B-series.
So glad they firmly cemented my love for high-revving naturally aspirated engines.
Next stop: 4.0L flat-6, 6-speed, GT3 suspension, and AWD removal in a 991.2 Targa GTS body. 😍
Love my K20 (2002 Acura, RSX Type-S). I didn't baby it but i didn't abuse it either. 320k miles. Original clutch. No engine work. Super reliable engine. Only suspension mods: coilovers, sway bars, 17 inch rims (2002-2003 rims were 16 inch). This out handles most cars.
K20 swaps are really special. There is only one problem with them.U need to have in reserve at least 2 clutches. Last 30 days 2 clutches burned(perhaps because of COVID-19 isolation) . Soo addictive to launch and rev the f... of them.Very nice video.Thank U.
Sounds like you might need driver mod.
You must not be breaking them in properly and riding the clutch at like 5-6k every time you launch like damn bud.. and buying some cheap clutches.
@@kseriesdan9722 guys a ricer.......... probably doesn't even know what heel and toe shifting is.............
Actually, GM did try DOHC with the Northstar. It was a complete failure. Yet they did DOHC on the Corvettes in the 90's. They did alright on that.
The Corvette is because lotus develop de dohc for the lt5 of that time
Wasn't really a failure. It had issues. It just wasn't given time to bloom before they killed it.
I fell in love with the K series when I found out it had a timing chain. The timing belt in my 94 Prelude Si snapped twice destroying the head and valves both times (69,000 miles and 120,000 miles). Then it happened in my 91 CRX Si on its original engine and the B16 I had swapped into it. Both were around 120,000 miles.
u should always do ur timing belt before it is due every 60k miles. so u should have done ur timing belt at 58k instead of 69k, and 115k instead of 120. do ur maintenance on time and u wouldn't snap any belt. i've always done my timing belt 5k miles before it 's due and i've never break any belt. just because it use chain instead of belt doesn't mean the chain doesn't wear.my accord 5speed hasn't hit 100k mile yet but when it hit around 120k mile i will get new chain and tensioner . those tensioner tend to fail as the miles go up with the k series.
@@antrinh5525 are you doing your oil changes, on time by the way you talking I can a say you are. the way the timing chain is build the tensioner takes up the slack and keeps the cams and crank in time.
@@crazeguy26 i do all the maintenance. the only thing i can't do is alignment and balancing the tires cause i don't have those equipments. there are people who never change the tensioner or timining chain and go over 200,300k miles, and there's timing chain and tensioner fail around 150k, but not too often, i would guess the way they drive and keeping up with other maintenance have to do with it. since the chain and the tensioner are not that expensive, i just want to do it around 120k for the sake of it, the labor is main cost but i will do it myself so no labor cost. i did lots of reading about the tensioner and apparently either ktuned or some other after market comp make a more heavy duty stronger one, i might go with it, for the chain oem would be just fine.
any engine that is interference out the factory with a timing belt is such a massive fail. Toyota masterace bb!
@@lockjawjak i didn't quite get wat u were saying, but own a 1990 corolla gts , it came with a timing belt, there has never been any problem with it, last month i did my timing belt , water pump job, car still run as good as before. same thing with my 2000 rav4, did the timing belt job a couple week before the corolla job, run fine and smooth as ever.
Just my two cent:S 2000 engine has a BMEP ( max power) of 12,82 bar, Ferrari Enzo has 12,44....
Great engine and great video,as usual.Thanks a lot. Love this Channel,bye.
Can we get an episode on the Mazda KL series V6? Split crankcase and basically 4 bolt Main with the whole bottom half of the crankcase serving as the girdle of the main bearings, forged crankshaft, great flowing heads, piston oil squirters. Very very underrated engine.
The whole "most power per liter" statement is accurate, as long as we aren't going to mention motorcycle engines. Just off the top of my head, the first gen Hayabusa debuted in 1999 and had roughly 133/liter. There are others as well, but everyone knows "the Busa". Still, the F20C was/is an impressive platform nonetheless.
D4A awesome vids! And just exactly when I wanted some info on the K20/24 here it is. Really appreciate you mentioned the rotation, important for swaps and as you say yourself, the fantastic similarity of the GM LS - plentiful and cheap and evrything else!
WOW!!! What an inspirational, let aside educational, video! What a sea of knowlege! The rap at the end is just priceless! D4A, You are sooo talented!! THANKS A LOT!
Can’t give up on those raps dude, it’s awesome after learning so much about the motor you reviewed 👍 keep it coming!
I have an 08 fg2 with a K20 Z3 with 185 k. Hondata shows my engine red lining over 1,400 times besides valve lash there has been nothing done to this engine and it still starts and runs like butter to this day! Not to mention it poops all over vw's 1.8 T and 2 L T engines and the 24 valve VR6... that's what makes these engines iconic although it was a given since Honda manufacture them
Love the Kellogg's K on the avatar! I always think of that K for some reason when I think of the K series, nice to know I'm not alone :)
@@d4a cheap as hell on Amazon
Definitely way 2 go k20 & k24. The B series & H series R excellent engines still. I just wish when they came out in the 90,s they had timming chains instead of belts. 😉
In America at least the K series is the LS of four-bangers.
The answer is in aftermarket products.
Some engines are obscure and have very little aftermarket support.
Some engines have decent support: you can get headers, cams, intakes, and rebuild kits.
Some engines have really good after market support: turbo manifold options, crankshaft options, oil pan options, turbo kits, supercharger kits, and swap kits.
Then there is the LS: if it is out there, you can get it for an LS. Crankshafts/camshafts that change firing orders, any type of power-adder option (including Roots supercharger), any type of exhaust manifold, HUNDREDS of off-the-shelf cam options and dozens of off-the-shelf cylinder head options.
Don’t get me wrong, they are good. I helped someone build a 300hp NA K24 and it rips.
Base auto Acura k20a3 rsx owner here my review is god of gas saver (looks good too) I 12v it (under 2200 rpm) and I don’t fill for up to a month. It’s slow I mean I lost to a auto Scion tC 😔🤕 good first car.
The rappin' at the outtro oddly was my favorite part. Didn't see that coming.
This was a most excellent video with a lot of good info packed into it. Thank you, and bravo 👏🏻!
Awesomeness! Thank you!
I now love my RSX-S and TSX even more!
@24.24 that b-series firing pattern illustration is so confusing I'd probably not have used it, people either know it's wrong, in which case they don't need the illustration, or they are new and learning, in which case it will really damage their comprehension!
Otherwise I must say I've now watched a few of your videos, I own two engines you discuss, (s14, 3sgte (3rd gen)) I also own a b234 in my daily which I love but obviously doesn't deserve a mention in your eyes 🤔 and have loved everything you have said enough to subscribe and recommend you, however the firing pattern in that illustration is really weird, I rewound it plenty of times and am still confused lol!
But yea really my point is;
Great work buddy love your work, lots of very interesting and accurate details, a clear love and passion for the cars spoken about, and you having actual experience about what your talking about is clear, spot on, absolutely spot on buddy, keep up the great work 👍👌👍
Oh btw I'm an old school N/A B series tuner at heart, had a B20A7 near 300 bhp back in my day, I play with different things now but at heart I'll always be a B boy, I am planning a K build for the BMW but that'll be boosted, so hard to build N/A these days and be competitive with the price/performance of boost.....
I like that variable intake, I ran a Offy split port four cylinder manifold 4 barrel holly on a highly moded lima engine, ( 2,3) stock bottom end the motor was a turd at 85, milled the head to 11-1 crane stage2 cam kit, hooker headers and adjustable cam sprocket ( you have to do that when you mill the head, the lima 2,3 is a non interference engine until you start messing with domed pistons and milling the cylinder head, when I ran a 390 Holleyj jetted by looking at the plugs, the four primary ports would freeze when acclerating, dual points, accel blaster coil and split fire plugs, it made around 140 hp
I had a k20/24 build. Super sweet. Made 250whp on a mild street tune. I would go Kraftwerks supercharger kit though
26:28 I'm sorry, I just had to correct this. The RBC (AKA RRB) gives 8-12whp [throughout the rev range compared to the PRB], while a few mm larger runners (the RRC) gives 9-13whp gain [throughout the rev range compared to the PRB]. Just 1hp gain, as Hondata as proven time and time again, that porting a manifold larger by 1mm for an internally stock K20/K24 adds just 1hp. The same exact thing was seen with the PRB, going to the PRC, which is the JDM version of the PRB and adds 1hp.
So, don't go out and pay three times for an RRC, when you can get the mass produced USDM version RRB and only miss out on 1hp. If you are going to build the engine for high compression, or go for boost, then buy a great big manifold like the Skunk2 which is not good for internally stock [compression]/non-boosted applications.
Also, don't confuse the RRB with RBB, which is a TSX intake manifold, and that's only good for low end power.
Again, the PRB is from the USDM DC5 Type-S, while the PRC is from the JDM DC5 Type-R
AND, the RRB is from the USDM 06 Civic Si, while the RRC is from the JDM Civic Type-R
Same thing here, USDM is just a slight step down from the JDM version. 1hp step down, but about 3X less in cost.
one of the best k swaps ive seen is someone put a k20 type R into a lotus elise 111s 😲 what a fantastic idea it was awsome left me and everyone else for dust 😂
Thanks ....it's been Educational.
The little I knew about engines
Has just expanded. 😎
Love my JDM K20A in my Civic Type R. Its incredibly tough and has been insanely reliable. Im on a journey to own all of the JDM Type R's, selling my Civic soon as my Accord Euro R (K20A as well) is arriving from Japan in a few days. I can't wait!
If only I had one teacher like this at school, just one, my life could be quite different
28:55 is one pissed off bumble bee lol
K24a2 Frankenstein engine is like the 2jz of 4 cylinders.
Lol I wanna go drive my '06 SI right now !! Great vid!! Also a fan of the GM LS !
Great video, this one and B16. These little guys can shallow some massive amounts of air. The k20/k24, using the same turbo as I have a Precision 62/65, makes more power than my Grand National at comparable boost. At 20 psi or 24 psi on the engine dyno, the k20/24 made over 700hp. My 3.8L, stroked to 250ci, with aftermarket heads, higher compression ratio, bigger cam(not too big though) and other go fast goodies my Grand National is making about 625-50flywheel-hp at 26 psi. So these little guys put out some amazing power, especially given when the technology hit the market. My JDM Honda Civic, Yo! It is JDM tight! Are you afraid of my VTEC?
My stock motor k20z3 made 450whp on pump 93 at 14psi with a precision 6262s and on E85 @18 psi I made 560whp. That was over ten years ago now. Can only imagine the amount of development that has been done since then making them even more efficient and superior motors especially when you throw boost at them.
@@GooGz Nice. That is so damn impressive for such small displacement and only 18psi. I just wasn't aware in 2008 when I bought my Grand National that these small displacement engines existed and could be boosted to insane levels and make insane power. Believe it or not I didn't know what a Supra was until I started watching YT videos of Grand Nationals or turbo Regals and eventually I ran across an upload of a Boost Logic Supra racing a Grand National. In the beginning of the video it had stated the GN was an 8.4x car and the Supra was about the same. Man when they launched the Supra took off like a bat out of hell. Not sure if there was an issue with the GN, I think there was as it lifted and rolled throw the traps or it just got spanked so bad off the line that the driver didn't feel it was necessary to put the pass on the engine. IDK. That got me into looking at Supras and their engine. I was amazed that such a 3.0L engine was making so much power and not breaking. Then I watched a video where a 2.0L running 88 psi of boost was running into the 6's. I believe it was a Evo, not sure. Then I ran across a video of a dude running an NA Civic, with what I assume was a B16, 18 or 20 and he was spanking quite a few cars. Even a Supra. He may have had a k20/k24. Then I was watching pass time and there was a nice Honda Civic making a pass. I do not know what engine or the displacement of the engine, but it had a 72mm turbo bolted up to and was running 30 psi of boost according the the driver and it ran the quarter in 10 seconds flat and I don't remember the trap speed. I was impressed. Then I watched D4A's iconic engine series and got my education on the B16 and K20 engines. Then seeing a video of k20/k24 on the engine dyno making more hp than my larger displacement engine running a similar turbo and more boost. Even though the block in my GN is 36 years old now. The heads and the engine were originally design to rev high and swallow a lot of air. Even with forced induction.
that supercharged K20 gave me chills
A great place to see a N/A K24 pushed to the max is allmotor phongs channel.
A great place to see a stock k24 pushed to the max on boost is humble performance!
Today's engine trend is to downsize turbocharge the engine. The old philosophy of VTEC where you have fuel saving mode at low rev and max rev high power mode is pretty much gone now. It is quite an experience to be in a rev happy engine even if the 0-60 times can't compared to a turbo engine.
Most modern engines do something like this, even if they are turbo'd. Rare to see anything petrol burning that doesn't have some kind of VVT system these days (they'll at least have cam phasing, and many use variable profiles too), and even my incredibly boring 1.6L turbo diesel Hyundai has 4 valves per cylinder and variable intake system geometry that works rather like the 'economy iVTEC' discussed here (It uses flaps in the manifold to block off one intake valve on each cylinder at low revs). Plus there are plenty of naturally aspirated motors around, they've just become less common in performance cars presumably because making power with boost rather than revs results in better everyday drivability.
@@nerd1000ify You're very much describing the over complexity of modern engines. IMO, they are a step backwards. Turbocharged engines not as rev happy nor responsive because of their heavier components, they also have a lower redline. The EPA rating shows they are fuel efficient but in real life, they are not always that much more fuel efficient. Moreover, the maintenance cost is higher because of carbon buildup and more components to fail (from the more complex engine design) and often they require premium fuel.
I would pick a reliable old NA engine for durability any day.
@@jamsbong Well none of us want to go back to points and condenser ignition or having to change your carburetor jets when you go somewhere with higher elevation... Not for a daily driver anyway. Modern engines are harder to work on due to all the computer tomfoolery but they are really amazingly reliable and easy for everyday use compared to engines from the old days.
For most people (I.e. non-enthusiast drivers) the top of the rev range isn't all that useful, it takes too long to get there in traffic and makes too much NVH. Forced induction circumvents that limitation and gives you more usable power. But I understand why an enthusiast like yourself might prefer the scream of a small displacement 4 pot at 6000rpm and climbing ;)
@@nerd1000ify I don’t think going back to carburetor is a good idea. That’s just a bygone tech. I do prefer NA engine though for longevity
Great channel, terrific info. Really enjoying them. You probably plan to but consider doing Nissan VQ and VR series, VW EA888, truck engines like Jeep 4.0 I6, Cummins diesel and BMW N54 / N55.
i really like how he does his own sign. that is real respect for the hearing-impaired right there.
Awesome series, love listening your videos while working :-) One little addition to your info, at 2:00, there are motorcycle engines in series production that produce around 200Hp/Liter like the sport 600cc and 1000cc japanese bikes.. Would be nice to make a video on the tech that goes in those modern bike engines. I know they are not car engines so your info is correct. Thank you and whish you happy hours in the garage! George.
The statement 'the highest horsepower/liter of any mass produced n/a engine ever made'? Literally discounts pretty much every supersport or superbike motorcycle engine.
Honda CBR1000rr for instance
@@kbeightyseven1783 Kawasaki H2, which is mass produced, is well over 200hp/liter
@@doyouhavegainsonyourphone4507 its supercharged.
I have this K24 engine in my Honda Euro. Knowing it can handle so much power now I know why it's indestructible in standard form.
One bid of wrong information I noticed here, k24z1 is out of 2007+ CRV and being an economy design I decided to build on this short block because it actully has a fully counter weighted crankshaft. Not all economy k24's get economy parts 😋
I have a 2003 JDM Honda Integra type r and I'm planning to keep it a very long time put on bolt ons and enjoy it!
Ever think about going to the dark side to BMW M54 or S54 straight 6’s or S65 V8 or the monster 5.0L v10 S85? They got some really cool motor giving the rod bearing are swapped out before failing ....
I owned two K20 equipped cars, an 2001 Acura RSX Type-S and a 2006 Civic Si. The RSX was stolen for its engine, and I put 183,000 miles on the Civic Si before trading it in 2018. Excellent engines that would get great gas mileage if driven gently or go like stink when I wanted to.
Although i have the shitty K24Z7 in my 9th Gen Civic Si, i really do appreciate the torque, it makes really great midrange torque and makes a great daily driver.
Every engine brand makes smoke. The smoking beast on the planet earth.
Fuel efficiency very reliable and can make a ton of power
Honda after 2000 made ugly cars but amazing engines, they should bring back the late 80s and 90s style
I agree
Imagine calling the s2000 ugly lol
That just means you are old.
Just fit the new engines into the old chassis. Win win
Early to the game!
So sad when I totaled my 2010 cr-v. it wasn’t like a civic si or fast at all but was the most reliable car I’ve ever had. I’m in Detroit and even the motor city I see about 10 on the road everyday.
I’ll bet the 2007-2011 crv will go down in history as the most reliable suv ever (not counting 4 runners lol)
same with my r18 powered fg1. im in a k20 powered fg2 now and its alot faster but i still miss my fg1. also my fg2 needs alot of work, just like how my fg1 needed work when i got it.
everybody i know who gave up their honda never did it willfully, its always either wrecked or stolen or they died with it.
Put a k20a in my 2000 em1 civic. It is soo much fun. 220hp with a 6 speed in a light weight chassis 💪🏼
I love these videos about engines please do more of these thanks
Highest horsepower / displacement naturally aspirated engine... for a car. Motorcycle engines are in a league of their own for HP/cc out of a naturally aspirated engine. Ducati Panigale V4R makes 221 Hp for 1 liter of displacement. Even in 2000's Honda's own CBR600RR was making 107 HP from 600 cc engine which is 178 HP/liter.
Planning on one day building a 2002 Toyota Celica for time attack. When eventually the 2ZZE goes, I'll be putting a K24 in there. I love the 2ZZE, but I have to be honest with myself about what the K24 is capable of. It's just a simpler motor to make the same power levels out of, and the two engines are characteriscally similar. NA, lightweight, rev happy, high rpm, variable valve and lift systems.
I’m not a car nerd but the content of the video was very interesting. Maybe you should improve a little bit the room acoustics and use another background which isn’t so boring. An Office with book shelves, plants, posters, pictures 3D- car models, etc. would be great.
Mickey Thomson made a hemi head for his drag motors that had the intake and exhaust valves the same size, what happens if you try this trick 50 years later, MY thought is a bigger exhaust valve might run cooler, valves transport heat via the valve stem and valve seat but not much as the vale stem as I see it, The aluminum ALFA twin cam engines I used to work on had hollow valve stems filled with sodium for cooling, and you werent supposed to resurface the valves, you could remove the carbon, and lap em to the valve seats in the head, shop manual said , when you toss out of spec valves in the bin you had to cut the valve stem open to release the sodium
30:36 I'm a pretty confident to say if I had left my 2007 Civic Si on my pump gas tune making 450whp , I would still own that car to this day. When making 560whp with E85 on a Stock k20z3 I ran into some issues ahah.
you got some sauce on your shirt ;)
really really good vid as usual! Stay safe!
I love this series of videos you've been doing, they're great. One thing I'd suggest maybe is branching out - so far it's been 10 Japanese engines and one German engine. Perhaps do one on the GM LS engines, or maybe go Italian with the Alfa Busso motor? Not complaining, because there are a lot of great engines from the land of the rising sun, but some more variety would be nice. Regardless... keep up the good work.
I fully agree with you, there will definitely be more diversity soon.
K20z3 in the 8th gen Si was not Supercharged. That k20zr was just a supercharger slapped on
I know it probably doesn’t count as iconic but I would love to see a video on Mitsubishi 6g72/4/5 v6 engine family
Yeah not really iconic but those what 4th Gen? 2006 or so eclipses.. Those don't get enough love, I would 100% own one of those cars. Excellent choice.. But let's actually keep that a secret because now that I think about it I still need to buy a cheap one so let's not open pandoras box and raise all of the prices.
Actually the 6g72 is in the Mitsubishi 3000gt and it’s been around for a while the 3g Eclipse gt has the 6g72 as well but not as nice as the one in the 3000gt also not twin turbo’d... but yes the 4g eclipse did get the 6g75 which is the bigger 3.8L version and it also had mivec which it like the Mitsubishi version of vtec
if you doubt the K-series you have no idea what you are talking about. Best 4 cylinder ever
K Swap the world bro, I call the variants Cool (Black) and Hot (Red). personally i have a spare k24a2 for my car. They are amazing for a 4 cylinder.
Interesting explanation discussion of all K series engines, I wish I could replace my K24A1 with a K24A2 into my CRV.
What a fantastic video... Thanks for the upload.
i want my 7 cylinder 3JZ-GTE a promise is a promise. ;)
It's coming, never loose hope! :)
@@d4a thank you for the amazing content
That K series should have been in the Rover 75 , it would have become a worldbeater !
It was a fantastic car , let down by a lesser engine .
My 08 si has 200k mi, had the same clutch for 100k , super reliable
Also best engine for economy is r18a(I know the video is it's about k20/24),but in r18a you have some forged internals and oil jets under pistons.
Amazing video my friend
Your content is great!! You make us want more!!
Amazing Video and sweet wrap-up rap🙏🙏🙏
hey mate, thanks for the info on the K series engines, I watch a lot of Boosted Boiz, and PFI speed videos, 90% of any build they do has a K series engine in it, even the J series V6 engine too :)
LS and K engine was a perfect time for tuner and car enthusiast. it was available to get your hands on, its not too expensive, a lot of after market support including community forum support. its a perfected engine by manufacture. its a rather a simple design engine that people can learn to swap it and such. it check all all the list for why its popular engine for a project.
k20c, its al whole new breed of k series engine. almost every bits of its not not really inter-changeable . valve is water cool and what not. the powerband is a lot different.
Fantastic video, learned a ton -- considering a k-swap on a Starion/Conquest
Could you make a video of MZR (Mazda) and duratec engines? Started en 2004 but Ford still use them and improve them the turbocharge ones used in the mustang etc. This engine is being in the market for so long it's just that Ford doesn't even call it like that anymore. And Mazda started using their skyactiv
I love your videos sir and your accent is entertaining hahah. I learned a lot. I own a k24 engine im building for 950whp with a 67mm turbo in my 1995 integra hatchback or DC4.
Iconic engines ZETEC in-line 4 would be awesome. Fantastic series period.
One of the best mods you can do to an economy K24 is to bolt on K20 heads there is some tuning involved but man does it wake up an economy K24.
Your videos r just amazing!!! I get to learn so much from em ...i havent been watching your vids for awhile cuz i was busy but it's so great to be back ! Love ur videos bro just so informative plus u got raps in every iconic engines episode not that cringy i enjoy those raps of urs lmao 😂👍
There are two different k20c... One is the k20c1 found in the 10 gen type R, the other is the k20c2 found in the base model 10th gen civic (port injection, non turbo)
I love this series - fantastic job. Any chance of a BMW N55 video? I'll give it a thumbs up!!!
Can you talk about the k24w1 earth dreams direct injection engines?
Great engines but they do have weak points:
- valve retainers + valve spring washers ( maybe go for titanium aftermarket?)
- oil pump rotor ( stick a forged steel after market rotor in the pump)
- get rid of the balance shaft style oilpump if you are after high revs.
The K24 in my 2003 Accord 5 spd. car currently has 485 k mi. The engine is orignal with the exception of replacing the rusted out oil pan. The timing chain stretch can be measured through it's inspection cover. Suprisingly the chain measures nearly new lenght. The engine oil consumption is tolerable @ 1qt. per 3750mi. oil change intervals. The orignal owner work commute was 200 mi. daily. Today it's just my extra car for running errands and groceries. I keep My good vehicles from public parking areas and stupid people.
Now do a video on the K20C1 Fk8 Type R motor because it’s the red headed step child of the K series motor.
Honestly if this engine was truly modular and there was a inline 6 version of the k series that would be awesome, a 300 plus horse power NA straight six with a 8000rpm redline would be a really cool swap for allot of cars