K20 Civic vs. K24 Swap Civic Si: Which Is More Fun?
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- Опубліковано 12 лют 2021
- The 8th gen Civic Si is the last of the raw old school Hondas. With a high-revving naturally-aspirated K20 engine capable of over 8,300 rpm it represents the end of an era for the brand whose equity was built on fun four-cylinder engines that punch above their weight.
But what happens if that K20Z3 engine blows up? K20s are expensive and getting increasingly harder to find. That's exactly what happened to Alex with his FG2 Civic Si, and why he ended up swapping in a larger K24 engine.
Which is better: the K20 or the K24? Which is more fun? In this video we line up my K20 FA5 Civic Si and Alex's K24-swap FG2 Civic Si. Let's find out.
#k20 #k24 #civicsi - Авто та транспорт
K24 swapped FG2 Civic Si POV drive w/ 3D audio: ua-cam.com/video/WSjkL7t454w/v-deo.html
K24/k20 is probably be the best of both worlds my dream build
Well made video, each engine is great. Ultimately less and less 8th gen will remain stock and if you must have higher rpm add a *Type S* oil pump to the K24👍🏼
Why not put the k20 head on the k24 block? Best of both worlds, torque and top end.
Doing that will let the k24 breath better but not really worth going through the trouble of head swapping just to get a few more hp .turbo or supercharging it would be way better.
@@boxer951 It depends on what you want though. If you're looking for an easily attainable big peak power number then you can't beat a turbo, but with that kind of boost you're gonna have lag until 4 or 5k. Supercharged is nice, basically gives the feel of a bigger motor, same power delivery, just more of it, but most struggle to keep the boost up in higher rpms, which is where these motors were meant to be(vtec yo lol). The same deal with smaller turbos, they will spool up quicker than a bigger one, but power will peak sooner bc the turbo can't keep up at the higher rpms. Instead of a more linear power curve, one that makes peak power at red line(which translates to it pulling harder and harder all the way to red line. You can achieve this with a properly sized turbo or staying N/A.
Basically, a supercharger or small turbo will give you way more torque at lower rpm's but will run out of breath at the top, a big turbo will pull all the way but you pay for it in lag at lower rpms where the car will be slower than a stock one at same rpm, for a street car this isn't bad, you can save gas by driving it like a normal civic, but then when you want to you can just keep your foot in it and more likely than not you'll be the fastest car around. A nice N/A car gives you the best response and delivers a nice, linear power band. I have a stock motor 08 Si (fa5) so I'm definitely biased but I don't think you'll find anybody who knows anything about motors that'll say the 9th gen engine is better than the 8th gen. Just from a technical perspective the k24z7 only had vtec on intake due to it only having one big oval exhaust valve per cylinder, and the manifold is literally built into the head so no after market headers. I mean it's got 25% more displacement but still makes the same power, albeit more torque at lower rpms and overall but idk, even if I was boosting and I could have whichever engine I wanted, k20z3 hands down. With a turbo and a few upgrades to valvetrain you can make nearly 400hp and Rev out to 9 or even 10k, pulling the whole way. I personally would want the z3 head on a 2.4 tsx block, rsx type s oil pump, good bolt one and good tune and you can push 250whp, with cams and such you can crack 300. 300hp with zero lag, instant throttle response, linear powerband and just as reliable as stock(bc all the major engine components are Honda oem parts, just mixed and matched, just might just stay on top of your maintenance and you have the 9th gen motor Honda should've built. It'd of made more power than all its competitors despite them using turbos. Idk i had a turbo d16y8 in my 99 ex coupe and it was cool as fuck but idk, my fan's k20z3 feels so much better and has way more potential. Hell even if you're going straight into boost a k20 head on k24 block would be sick due to getting all the benefits of more displacement without any of the drawbacks or compromises made by the k24z7 head . I just noticed this is a 9 month old response lol.
@@etizzle915 don’t worry I read to then end and I got some good info! Just picked up a stock 09 civic si yesterday.
@@Wickedreptiles how much the car cost when you buy it?
@@anakallahempat0dua223 4000 but I got it for a good deal, it worth probably 5500
Great comparison! I definitely had to subscribe. The k20 is so much fun. I feel you can’t go wrong with either set up depends on what you’re using the car for.
Interesting comparo. Thanks for making this.
These are both beautiful engines I love them both, k24 feels so much beefier down low, I think that benefits in a tighter track or canyon run, the k20 just screams an I love the harmonics when revving the crap out of it, something that so damn awesome, you have to rev it up and keep it at a higher rpm which is what makes it magical, you can’t go wrong with any whether na or boosted
Great vid there, Thanks!! Would like to see this from more of a pov/shifting view there too ..
POV video coming next.
I have had 2 FG2’s and I am on my 2nd FA5, a 2009. I was lucky enough to have a Flashpro and K&N intake included with this car. Vtec point set at 4350. More aggressive timing and leaner than factory for more power. You don’t know what you are missing. Absolute must!
Not to spoil the surprise, but there's a header, 3" exhaust, 3.5" intake and FlashPro waiting in the garage. 🤤🤤🤤
Same here. I just recently bought my fa5 with Hondata and k&n intake included with only 86k miles. After owning 2 fg2s I can honestly say the fa5 is an understated monster waiting to be woken up lol
I went full bolt tuned and my car became so obnoxious 😆 love the performance but hate the loudness
This is a great video to show the comparison of the k20 and k24. I know there are many different k20’s and k24’s so it can very depending on the exact motors but it is pretty close. I have a K24V3 with 201hp and it’s been a lot of fun.
k20 with intake and tune would really bring that k20 alive.
My k20z3 fg2 has 241k miles on the motor with K&N SRI. Still loves to redline at 8600rpm with Hondata flashpro. Like you said, once in Vtec, this car rips even after 100+mph
Lol
@@jaydenbarteaux8768 Not a fan of the K20?
@@Llggd just swapped mine out for built 20/24 is all. Stock k20 is nothing special at all
@@jaydenbarteaux8768 I’m sure it’s much faster sure, but just surprised on the top end of the K20. Sure beats out my stage 2 wrx which says something about how much overhyped Subies are
@@Llggd agreed. When I was FBO 226whp I think. It was neck and neck with a 2016 sti.
For sure (for me), the k20z3 is THE way to go...can’t beat 8,000+ RPM and that insane throttle response and pull! Sound is intoxicating as well, once an aftermarket intake is fitted. Bit biased here, as I’m an owner of a 2010 FA5 (Dyno Blue Pearl). ☺️☺️☺️
I’d rather start pulling at 4K rpm in a k24 instead of 6k rpm in the k20
You should take a ride or drive a K24. I’ve been in and driven both, if you think the K20 has insane throttle response, you should try out the K24. 185whp (I think that’s the hp this k24 had) on a K24 is pretty low, the K24 I’ve driven is about 220-230whp. From driving both K20 and K24, it’s way more fun in the K24 than the K20, K24 just throws me into the seat while the power of the K20 just eases in. So in my opinion the K24 is much better for daily driving and having fun, while the K20 you got to rev up high to have fun.
With stock k24a2 with rbc intake manifold and 50 vtc, you can make 225-235hp around 180 tq. Much faster than k20z3 and it revs to 8200-8500 rpm. But it wouldnt matter anyway k24 has much more piston speed than k20.
My k24 revs to 8800 everyday, throttle response and torque is much better(and I loved my k20z3) but a little money and the k24 is a better platform
@@EFVILLAIN626 well said brother 🤙🏻
Nice vid!!!
I love to top end pull of the k20 but it's hard to beat the beefy midrange the k24 offers
it remind of ap1 and ap2 s2000. both engine is completely different feels. its hard to pick one you like better. k24, most people like city driving with low end torque. but the k20 makes you drive harder and the vtec engagement is satisfying. there was a race between both engine with similar hp. its nearly neck to neck, but the k24 in a long race in corner could overtake since it has the lower end torque.
K20 FTW
Thing about a K24 is that you can put a higher flowing head on them and get the best of both worlds. .4L displacement is a huge difference in motors that size.
Awesome video! Your tire setup inspired me to get a reverse staggered setup with 245/40/17 and 225/45/17 setup on my FG2! :)
245 up front right? I think I might do the same, I have 225/40/17 on 17x8.5 +32 and I have at least an inch of space to poke out in the rear, and maybe 2 in the front. FG2 as well.
Thinking maybe 265 10-10.5 up front and 245 9-9.5 in the rear
@@dangusprime Sheesh man that sounds super aggressive, sounds like you'll have to do a good amount of fender modifications
@@Jay-xg3pt yeah I'd probably shave my rear quarters and roll my fronts, but I am on Coilovers so I can raise the car a bit if I need to
@@dangusprime Are you tracking the car? Not gonna lie that fitment seems wild for a daily driver lol
255/40R17 all around with my FA5 but that kind of staggered works perfectly
I have some questions for your buddy... I plan on putting a k24 in my fg2 .. two questions .. he said he had to put a crv mount in, was there and fabricating needed for that or did it go right in? Also I have a hondata flash pro for my car ( k20z3) do I need to get a diff one for the k24 or will the one I have work to reflash it
I bought a fa5 recently k24/k20 I love vtech kicking in at 4k rpms and redline at 8,400. I use to have a rsx type-s with an intake I miss it lol
the seat isnt higher, the roof line is actually lower by a few inches on the coupe. if you look at an fa5 head on it is taller than a fg2
I can't wait to add a K24A2 to my FA5. I prefer to. I'll keep the K20Z3 as a backup.
Ive had multiple of both. Stock or just bolt ons k20 all the way. Wish i could do the k20 head /24 block build
K24 100% 😁 unless you want to push revs, or do a boost build on stock transmission. K24 limits you there...
Be sure you have good tires and a well tuned suspension (stiffer rear springs and dampening stock rsb) for k24
@Nutbox Deliverer r(rear), s(sway), b(bar)
Honestly I knew how I would feel about the swap when I found out it wasn’t a frank swap
a good tip is to put the tyype r's oil pump to get better performance!!
Do you know of the La Han Automotive any info on them i wanna get my k20 swapped out for a k24 but i need a shop to do it?
Subzero Motorsports in Ontario California is a good place!.ps......ua-cam.com/video/g-hNmkSdliU/v-deo.html
You need to try stock k24a2 with rbc manifold, 50vtc and tuned. They make 225-240hp around 180+tq and revs to 8200-8500. Much much faster than stock k20z3. Runs high 11s to mid 12s depending on chassis stock weight and reduction, suspension and fuel. Of course driver mod matters.
225 240whp is not running 11's. More likes 14s
@@justinmartin4841 nope. Do some research. Plenty of them on youtube. This is not single cam or b series.
@@Ehren1337 lmfso i own a 2015 si with 230whp i know wtf im talking about. You must be new. A stock k24 civic runs about 14.6 to 14.8. Ok lets add 25hp u think thats gonna get you to 11s? You need to shave 1200 lbs off the car. Lmfao thats fucking hilarious. Maybe YOU should do YOUR research before you say anything because you have no idea what the fuck you're even talking about. You'd need to be pushing around 600 whp to hit 11 second QM times.
I actually laughed at your comment, must be like 13 do you strap on your magic rocket boost so its not counted as whp but air HP. Lmfao
@@justinmartin4841 im not talking about 8th or 9th gen chassis. Im literally talking about 90s civic chassis weight lol 600hp will hit 9s. Go watch youtube before you look stupid.
@@Ehren1337 @ 225 whp no car under 1500 lbs is hitting 11s period. That chassis is more like 2400lbs i literally own a 15 si a del sol and a eg hatch.. even gutted with 225 not gonna hit 11s keep on dreamin dude
A hayabusa bike 197hp weighs 580 pounds. Runs a quarter in 12 seconds flat or just under. Ur telling me a car with more than twice the weight of the bike with similar power numbers is gonna run a 11. Yeah.. uh huh back to class son.
I'll wait for your vid of a legit 225whp car out pulling a Hayabusa.
Convinced me in doing a k24 swap
Did you mind change about the torque loss on the k20 AFTER your reflash?
K24 still has so much more torque. It's about a 30 lb-ft difference across the whole powerband.
Most people combine the two
K20 head k24 block or vice versa not sure which is better, I just know a lot of ppl with that setup
I wonder if anyone has swapped in the FK2/8 dual axis strut to limit torque steer when running a high output k24? I know a LSD will help but coupled with the wicked suspension design would make a true monster.
Si transmissions have a helical LSD from the factory.
180 wheel hp with 3.5 intake and FP? That's garbo
Well I just got 89 crx si .. which one is better for My car .. I would love to put a blower or turbo ???
I have a 2006 2.0 si fg2. 214,000miles. Daily driver and running strong. Any advice in future maintenance? I know my vct needs replaced but other then that, no tune just stock and its still strong. 8)
That vct gear is easy to do by yourself all you got to do is take valve cover off a find dead center pull chain off gear and replace.😃
I’ve got a black 2006 si with 212k and running strong too. May need a k24 swap for fun
Anytime someone says just $1000 for a k24 you better believe that it’s gonna be more like 5-7k to get it done properly. Start adding up every mount and gasket.
I had an 8th gen Si sedan in which I swapped the stock k20z3 for a k24A2/jdm version. And I used the stock ecu,no tune and the K24 beats the K20 in torque and powerwise they both make the same horsepower,only difference is the k20 can rev 1k higher but that 1k won't make the k20 much faster. So imo that k24 swapped Si would really spank on that sedan k20. It may feel to you that your k20 is as fast as the k24 but in a race you'll see why most everyone goes k24 and don't look back. I do like the k20z3 head though to install on a k24 since the k20 head has better air flow but that's about it and imo not really worth doing a head swap unless your planning on staying all motor and wanna squeeze out every last drop of power from the k24.
Best thing I did feel great and low rev sounds amazing
K20 over k24 I’ve seen it and can’t change my mind
K20 all day
k20A2 from my rsx type s is the best hands down
U check if the seat is raised up ?
FYI 188whp is 221HP to the crank not bad for a CRV k24 faster than a k20 stock.....but i have a k24a2 tsx engine on my ep3 and its amazing! much more power when you throw bolt ons and tuned it than a k20 would have.
Fbo tuned k20s make 220ish whp though
@@BunnyBUNGALO the CRV k24 is weaker and I compared it to a STOCK k20 not FBO lol
And a k24a tSx FBO is much more of a monster in power than a k20 FBO to FBO with less revs of course.
@@markrodz2633 a fbo k24 will run almost identical times in the 1/4 mile as a fbo k20. They make identical whp numbers but k20 makes it higher in the revrange.
6.4 seconds to 60 versus 6.7 seconds to 60 my r18 with a 5-speed manual with clocked at 7.7 seconds to 60 by motor trend
i have godspeed's on my cobalt ss they are verry nice for the track
Here......ua-cam.com/video/g-hNmkSdliU/v-deo.html
Putting the k20 type R head on the k24 engine . Then you would see how fast the k24 really is even though k20 have more rpm i can say it is difficult to beat the k24 ^_^ . Great video though bro
Wow....ua-cam.com/video/g-hNmkSdliU/v-deo.html
They ain't hard to beat. I spank on them daily with my k20a R fbo
@@lenrodriguez5581 ya maybe but i whoop those k20r with my k24/k20 eaasily bro ..
I have had both. The k24 is punchy.. the k20 sounds scarier and higher rev but the torq is not there like,, at all..
Pump the seat handle down?
Which is faster tho?
The K20 is the last true screamer of a Honda Civic the fuel cut off 8500 RPM that K20 just sings up to the red line and it's so much more fun to drive a car that has a higher Red line even if it has a lot less torque because getting there is the fun k24s are good for torque increase but 8th gen z are easily built up and it's nothing for these things to handle 250 horsepower with minimal upgrades or mostly all stock internals
I like k24 better tho more torque down low gets up and moves a bit better than k20 , but put a k20 head on a k24 block and have the best of both , worlds , k20 for light to light , and k20 for mile racing
650 whp you mean, stock internals with turbo.
Nice comparison video. But did he really describe the civic si "as a big heavy car?" Compared to what? It's not the smallest car but it sure isn't grandmas Buick either....
My FA5 weighed 2950lbs fresh from the factory. That's pretty heavy for a car with nearly 70/30 weight distribution and given how modest the engine output is.
Love my car, and if you check out my other videos on the build it's very quick on track, but its not a fast car.
Handle on left side lowers the seat.
K24 ftw
"Big heavy car like the Civic Si" ?
😂😂😂😂 LMAO
I think.there seems to be a need to compare the K20 to the K24 and have a discussion that doesn't offend the K20 fans. At the end of the day, the K24 engine is the better engine. Why some people don't want to accept that is beyond me. Not my problem. I'm glad Honda offered both engines, but the first opportunity I get to swap out my K20 for a K24, I will gladly do it!
Depends what you would call better and that’s the problem it’s just your opinion at the end of the day. Some people enjoy the higher revving engines. In drag races you see K20s blowing k24s out of the water both tuned. It’s preference. There’s a reason why the k20 is common in a lot of k swaps
@@DOOMLORDHOKAGE Glad you brought this up. What number of people who own cars with K engines use them for? Fair to say a large majority use the engines in cars to commute and drive on the streets vs drag racing? That's great the K20 has the potential to make more power (which is debatable. I'm fine with both engines. I'm glad both exist), when using the engine 98% of the time not reving the crap out of it, majority of the people want tq.
If I had a car that was used mainly for tracking and the K20 is the better engine to use, I'll gladly use it. For all other purposes, the K24 is superior.
@@andydhillon1977 I think you just need to let people enjoy things they like. You're trying really hard to "dismantle" someone else's preference. You might be very insecure in your purchase good sir
@@DOOMLORDHOKAGE I'm not trying hard to dismantle anything. My responses were short and concise. It was pretty easy.
I'm not insecure about owning a Mugen Civic. 1 of 1000 car that will have the K20 replaced for a K24. I'll keep the K20 still.
I sleep well at night.
@@andydhillon1977 So why are you complaining in a youtube comment about not understanding why people like the K20s, trying to convince anyone reading (or yourself) that k24 is the better engine and announcing to the world that you're switching to a k24? LMAO Doesn't seem like you sleep well at night at all
Stock k20 vs k24 with hybrid cai and goodies
i can see it in his face that he wants the k24
the k24 can be better with the head off of the that k20 because most of the k24s have IVTEC-E basically the opposite of high-performance while the that k20 has IVTEC the real one wich actually is for performance and actually makes more hp when engaged 😅
K24 with be faster in a light to light race tho, only time k20 will come out on top is in a top speed run
What's the rev limit on the k 24
7200 on the stock oil pump
Question why the wider tire at the front?
The car is FWD.
@@DriveBreakFixRepeat I put on wider tires up front, and it makes the car very darty. Do not recommend when going fast speeds.
@@DriveBreakFixRepeat I have wider wheels up front. But 225 profile all around. I would rub all the time if the tire was any wider.
Its 2 years later, im sure you know you can raise and lower the seats 😅
I knew back then. The seat was at its lowest position.
K24A2 is a superior engine to a k20z3, you have to ring the neck of a k20z3 to get the power out of it while the k24 just gives the power effortlessly. A k24a2 can rev to 7.5pm easily. You won't miss that .5 rmp that the k20z3 have over it.
500rpm more? Who shifts at their k20 at 8000rpm lol? I rev my 31 year old single cam accord to 7500rpm lol. Mind you its not stock by any means.
Lol and k20z3 can rev to 8500 rpm easily too stock with a tune . But I'll say the k24a2 is better if you plan to stick NA but the k20 is better if you plan to boost it. At the end of the day tho , you can always combine the 2 and get best of both
I wish my 8th gen wasn't rusted to shit :(
Wow no gage action lol
I like both engines yet that K24 dude it is ridiculous. There are those who were still undecided about both engines, and now you have just sealed the deal for that K24 it is so much more torquier and cheaper than the K20. Even though you can do more mods to the K20, I believe you can do just as much with the K24 to the internals and put a super charger on that thing with that torque and you have an absolute V8 killer can someone say come on Lexus IS 500? Yeah I get it there's still the ultimate swap out there and that would be the K20 TOP End & K24 Bottom End and you would then have an absolute BEAST oh don't forget the Super Charger! V12 Contender! Come on somebody!
I end by saying to all who would read this . . . Pray and acknowledge Jesus as your Lord and Savior of your life because he is!!! Begin to READ your Bibles for the Truth!!! God Bless those who already do!!!
Look up Gene Kim n Chuck missler on UA-cam!!!!
Wow....ua-cam.com/video/g-hNmkSdliU/v-deo.html
He is the way, the truth and the life. Amen brother!
I think this solidified my decision to K24 swap my 7th gen. I’m looking for torque seeing I’m more going for an overland build.
7th gen is the em2 right?
@@ColdVsIce yes
@@ATAnders93 love the body stylr
The suspension geometry in the 7th generation is trash
@@kevinwhiting8391 I guess I’m used to trash then. The only other cars I’ve had is a base model 02 Sentra, Protege5, and a 16 Ford Focus SE. They were all practically identical in the suspension area.
snag a K20c4 out of a wrecked accord and swap it into anything 2400lbs or less, turn up the boost, have fun, ruin the turbo, BIG TURBO TIME, 450whp ez.
I have a '03 accord with the box stock k24, just turned 220k and still burns almost no oil. Why would I want a new car?🤔
If it's not a tsx upgrade pointless both cams have vtec
he needs a k24A those makes 240 with fbo
Your car feels faster cuz the k24 is running lean unless its tuned.
K24 is definitely too much noise for a daily imo
Say what? The Civic Si is a big heavy car?
These aren't the 90s tin can Hondas, they weigh over 2,900lbs.
shivic
U just need a tune on that k20
Stay tuned...
Whimpers in 1.8L
j o i n u s
K24>K20 for the 8th gen platform, especially with the 50deg FTC and type s oil pump!
@Nutbox Deliverer i have the 50deg and type s pump, and no issues yet car pulls strong.
@Nutbox Deliverer yup K24a2!
K24 isn't real VTEC.
Intake cam only 😢
2.0 more balance n more parts
Race for a comparison
K24 all day long, no comparison!! Plus 2 doors looks way better then ugly 4 door sedans!
the two door looks like an egg
@@br3ad420 best body style by far, 4 doors is for old ppl
The FA5 sedan looks way better than the fg2 lol
@@ColdVsIce those are the ugliest civics ever made 🤣😂
@@Bbc418 says the dude with the egg car
Get the k24 z7
I miss the good ol’ coupe days... (early 2000s car scene) so tired of this sedan car craze. Sport cars should be coupes only hence the Civic si em1, integra, dc5...etc. with the exception of the sti and evo. It’s a shame Japan never had the civic coupes though.
You're right for the most part, but at the same time they realize there's a bunch of ppl that must have sedans so they're trying to bring the fun factor to them as well. (I would love a coupe si) nonchoice must have sedan. Drive a 5spd lx.. 😒good on gas, can be fun, but still working on that si part. Theres an FA5 with my name on it out there somewhere.
@@jondoe2099 you can always find an Fg2 though.
@@Pharaoh_The_Great true that.. gotta get the 3rd car tho so wife cant say nothin lol.
Those cars didn’t exist in the early 2000s
Nah, nothing wrong with sedans. The issue is coupes with automatics. All coupes should be manual. Period
Its a no brainer the coupe always better hands down
the doctor phil motor is best
Waste of a video it’s not a fair comparison should have swapped the head or gotten actual k24a2 especially since he paid a2 money for that a4
K24 is way more powerful
Same power just more torque
@@lollol-xp4mc slightly more hp
Yes K24a2 is a supior engine to k20z3 I have experienced both engine in my fa5 si.
Dude got worked over for some money sounds like a bad greedy mechanic issue versus anytging else....your bolts backed out? They obviously didnt know the torque specs and just cranked it up in the garage without even worrying about it....ohhh i got this it should be good type shit
If they know you got money man shops be shady as hell like ohh we will let this one go out knowing your gonna have fucking problems so you'll have to take it back so THEY can make more money
The K24 vtec does not hit hard because it’s not the TSX K24a2 it’s a K24a from the elements and Odyssey!! 🤣🤣🤣🤣🤣
Odyssey k24 ? That’s not the same k24 that the TSX has the TSX is the K24a2 with better cams and rods and a few other little things but definitely different internals !