The Secret to a High Revving K-Series Engine

When an engine is engineered to make 200 horsepower, getting it to make 50% more power without adding forced induction requires a bunch of clever thinking and upgrading. In this video, I go over all of the modifications needed to produce 300 horsepower from my naturally aspirated K24.
The complete parts list for this K24 build can be found below. The google sheets document is currently as updated as it can be, and will be getting revisions as I progress this build. Feel free to take a look at the tools and products I’ve outlined in this video as well. By purchasing items below, it helps my channel operate and brings more awesome content your ways. Thank you all for your generous support!! 💙
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HONDA K24 PARTS LIST UPDATED ▶︎ bit.ly/38SH8fd
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PARTS / SUPPLIES
▶︎ Milwaukee Die Grinder - amzn.to/3aFsyHy
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I truly hope this video has helped you guys out! If it has, help me out by liking the video and stay staying up to date with my ▼
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If you have any additional questions, feel free to send me an email at [e-mail]. Be sure to tag me on instagram @milmast with your projects. Thank you so much for watching!! ❤️
Video Chapters
(0:00) Introduction
(0:52) The K24 Recipe For Power
(1:47) Cylinder Head Modifications & Upgrades
(4:16) Bottom End Modifications & Upgrades
(6:20) Supporting Mods Needed
(7:59) Full Parts List & Additional Information

[@LeeMK2]

you are the only one who put up a parts list and honestly trying to share/teach/inspire others. Other youtubers won't do this, they just put up contents to showoff their build.

[@milanmastracci]

I'm glad people are looking at the list. I made it to help everyone watching, whether it be now, or in years to come.

[@oneeyedsnake6914]

a young guy on KZbin that is an actual car guy and can articulate himself well !

[@ShoneDaddy]

One eyed Snake are you saying ThatDudeInBlue isn’t an actual car guy? Lmaooo

[@oneeyedsnake6914]

@@ShoneDaddy no ,but watch motortube now that's a broke dick wanna be!

[@r3drumg33k3]

You have CLEARLY NOT seen his valve "cleaning " * cough, destroying perfectly fine valves* video ....it is more than cringe worthy. I'm sure a few foolish people ruined their sh*t from it.

[@timm5970]

@@ShoneDaddy hes more of a carmeet rat

[@ShoneDaddy]

Yea it was sarcasm guys. ThatDudeInBlue reminds me of the dudes who all they knew about cars was what they read in magazines, yet they swore up and down nobody knew more than them. What’s weird is that he hasn’t really learned all that much after all these years.

[@tommyboy1two]

I really like that is guy didn't forget where he came from alot of other KZbin's are constantly buying and getting rid of cars all his cars mean something to him it's nice to see some actual heart put into some builds

[@dreednlb]

I miss the 240 :(

[@chrisfernando7688]

Totally agree, I subbed instantly after watching this video.

[@CameronsCars]

Self taught doesn’t mean self-righteous. At least not here!

[@arthurwong9017]

When he was porting and grinding, I was unconsciously blowing at my screen to clear off the metal shavings

[@yxfrans6257]

Same here, I got my goggles on.

[@edgaremralino7512]

Yup I put on my mask and hearing protection.

[@sideshow45]

How did you do that while unconcious?

[@mugensamurai]

You have to respect a dude that took the time to teach themselves how to mod their car correctly.

[@milanmastracci]

Thank you for the kind comment! 👊

[@Dan-lx7ok]

I love that you included the spreadsheet. I can't imagine how many people will start a build like this and think just by buying a k24 block that's going to be most the cost to build an engine - but you'll quickly see that the engine itself is part of the cheap stuff. Can't wait to see where this goes, good luck man!

[@spaghetts]

Damn. Stumbled upon your videos right before buying an 8th gen accord coupe back in 2013. Now 7 years later I find your content again and you're on an indepth information filled engine build for the same car that pushed me to purchase mine. Glad to see it

[@larrycoleman8298]

I love the fact that you are putting up a detailed list of everything on the build

[@d3tach3d]

What a great video on this motor. Id say its one of the best IMO. Shot great, straight to the point, and great info.

[@RubberChicken808]

Just came across your channel while going through V-Tech Academy videos, thanks so much for going into the details on everything! Appreciate the time and effort that you have put into your videos and sharing the spreadsheet (as of today still up!). Was planning on doing a swap sometime down the line of my 2010 LX-S, adding up your costs will allow me to weigh the finances on swap or purchasing a 15 Civic Si. Thank you again!.

[@sauldiaz4012]

I like your style bro , you brought in The science and numbers that everyone doesn’t talk about to achieve this type of build or any build for that matter. And that’s what gonna keep you Winning. GREAT JOB BRO !

[@eb9826]

Just checked out your list, EPIC! Thanks.

[@Viper4ever05]

There's something about getting more power out of NA engines that I love. Feels more satisfying than slapping a turbo on it.

[@nlsdrf1290]

Turbo is better

[@rickybobby-tj2ko]

Finally a solid video to help with my goal. I’m 19 and I own a 2006 Honda Accord 2.4L , I’m not interested in doing any of this now. But this has always been my goal even before I owned my car. I can’t wait till I get some things situated and start working on it bit by bit. Thanks for the video !!

[@battlesship]

Love your videos and channel man, you do such a great job at explaining this stuff and its making me more knowledgable/confident for my plans with my k24z7! Thank you and can’t wait for more!!

[@evanmorgan9275]

I own a 08 honda accord and I've been planning this same build for a while. Thanks for making these videos because now when I get enough money I have a guide and a parts list. Thanks homie🙏

[@arcadius.a2750]

10/10 dope video! Excellent explanation of everything! Definitely gave me some ideas and thoughts for my Si

[@graysong2961]

Omg…you freaking rock! This is what I needed, video wise! I’m am wanting to do just this to my engine. I just got the k20A2 head ready for port and polish.

[@CameronsCars]

Really hoping to K Swap my next S2000, and this helped me a lot! Thank you! I subscribed!

[@jpierr79]

You speak very well and I like your descriptions.

[@texasrepresent1229]

Very well spoken and very descriptive. Nice video. Subscribed

[@brandonlewis1851]

I have a k24a2 in my tsx and this is sooooo helpful

[@oirasan6987]

I appreciate the way you explain the information man. Ive learned so much in just two videos. 🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯

[@wolfpac550]

Reminds me of my ITR build 👍🏾 good stuff

[@MrLbpsniper]

Milan! I've got an 08 2.4 coupe and your channel gives me so much inspiration! Thanks for all of the info and stay safe

[@milanmastracci]

Thank you Cal! Likewise, stay safe out there!

[@BITTYBOY121]

Cool video man. Very informative !

[@davidk4190]

This guy has real good info. i feel that he knows all about the k 20 k24. maybe straight from honda himself. thx dude

[@mzappas]

Awesome. Curios to see the progression

[@FallingUpStupidity]

Legend, first vid of yours and instant sub for mad quality 💯

[@AndyGouveia]

Dude your a legend!... Love the vids! You give such a great breakdown on everything

[@milanmastracci]

Thanks Andy! I appreciate it 👊

[@chemist7908]

Wanted to thank you here for the double clutch videos, no one explains it as simply as you.

[@jayczyzyk9707]

Excellent explanation

[@zijiechen3846]

I sold my 12 Accord Coupe last year, but I still love the great vids from this awesome channel. Appreciate your work!

[@milanmastracci]

Thank you so much Zijie!!

[@kaygeebee]

Superb video. Right to the point with very specific advice. Can’t wait to see the result.

[@milanmastracci]

That makes two of us 😁

[@ChavezDIY]

I'm excited to see this all come together! Awesome!

[@milanmastracci]

Me too Miguel 💪

[@daveb.6685]

Awesome video and very much appreciate the parts list!

[@milanmastracci]

Glad to help

[@derekn4579]

Awesome videos man, I really appreciate the time you put it into them. Looking to build the k24 on my civic

[@milanmastracci]

Glad I could help! That would be sweet

[@JC21x]

Buzzing for this build

[@Hunac-Ceel]

Very interesting, great video 👍 subscribed.

[@paultaylor9939]

Very informative thanks for sharing good luck with the the build cheers

[@milanmastracci]

Thanks 👍

[@xckj3776]

Your build sheet has saved my life

[@holypotato4287]

Bruhhhh. My dude is wild. He’s one of the better KZbinrs in terms of cars 🙏

[@drkvegeta]

Amazing thanks bro, love the detail I've been waiting on your video! Hope your keeping safe..

[@milanmastracci]

Thank you so much. More to come!

[@drkvegeta]

@@milanmastracci I knw, I'm looking forward to it, because I want to do the same to my 9th gen like I showed you the last time I made 232hp 183tq on my setup, but I know thats pretty much it on my k24z7 unless I go supercharge or boost.

[@waseemsells5378]

Great video bro!! Big ups!!

[@milanmastracci]

Appreciate it!!

[@kylesyx8432]

This is the most informative 9 min. Video I’ve seen in a long min. I just subscribed I build small engines for drag bikes up to 420cc Love the video keep ‘‘em coming ! ✌️

[@jordanfrisbie5712]

This makes me so excited to start building my 07! Thank you! Earned my subscription 💪🤘

[@milanmastracci]

Awesome! Thank you!

[@juanmarquez130]

What intake is the one with the heat wrap

[@oemcapetown680]

This is such a good video!

[@1992it]

this video earned my subcription and my like, fantastic work I really appreciate it.

[@milanmastracci]

Much appreciated!

[@TURBOTRISTO]

jam packed with info great video

[@milanmastracci]

Glad you enjoyed!

[@kaderaqq1350]

Also why I love my Honda. I drive it hard and the car enjoys every bit of it.

[@Offishu]

Nice vid, great info! Subscribed.

[@milanmastracci]

Thanks for the sub!

[@flyboy8282]

Thank you again for doing this! I've been waiting years for someone to actually do this to the 2.4 8th gen 2008 Honda Accord coupe 👏🏿👏🏿👏🏿

[@milanmastracci]

GET HYPED!! 🙌 Its gonna get real

[@pruvengsx1]

Question what how to tune the accords? What wire harness or programmable ecu to use because hondata, ktuned and many more shops across America keep telling me to buy a different chassis!!! Seriously

[@JoseFlores-pi9gl]

With ktuned I believe you can do a custom tune

[@flyboy8282]

@@pruvengsx1 hondata doesn't even care about the 8th gen 2.4 Honda accords. Ktuned is the only place where you can tune your 2.4 k24z3 Accord but this tune is still limited meaning they don't have a tune for eternals or turbos or superchargers for the k24z3 Accord motor. fuck those other people telling you to get a different chassis. Just wait our time will come when we the 8th gen Accord community will be able to fly like the rest of them.

[@copperkeyracing6167]

@@flyboy8282 Heavy chassis and undersupported. Heck a TSX is lighter and smaller, do u see many doing extreme builds on those? No. There is even a Hondata system for a TSX, but not Accord. 300whp on anything is still 300whp, even if its slow. 4cyl 300whp is impressive. Just think, one day u can afford to buy a cheap EG and put the 300whp swap in it. OR, go expensive and buy a Lotus Elise and put the 300whp swap in it. Once u have the motor, and running, u can always buy something else to put the motor in... That's where it matters. You did it once, do it again, or just swap it over.

[@vtecminileon]

Super useful. Great video

[@milanmastracci]

Glad it was helpful!

[@PhillyDee215]

I have a V6 and it only makes 400whp check out my dyno. But its amazing how a 2.4L can make that much power. Great video!!!

[@SkyBlue-uh4pi]

Respect K series built !! Keep it up bro

[@milanmastracci]

More to come! 💪❤️

[@Zspeed]

Wow, that's an awesome engine upgrade!!!!

[@milanmastracci]

I'm excited for it! Should be fun ☺️

[@nunorpedro]

Excited for how this engine build will turn out! The Accord really needs that K24! Good luck! Greetings from Portugal! :D

[@milanmastracci]

Thanks brother! Me too. Cheers ☺️

[@iamhole]

great video mate, will be watching all your new videos, got my own project in the works, robinhood kitcar 1993 originally built for the xjs V12/rover V8. considering a K swap NA initially but i am thinking hard about twin charging, got a lot of space to shove bits.

[@carloschaqui8234]

Can’t wait! Great Vid.

[@37310kaleb]

Well this just motivated me to do my 04 euro thanks bro for awesome content. Subbed

[@milanmastracci]

Thanks for the sub! You got this bro 🙌

[@ayenunu]

Milan....your genius.

[@omeroneismdta9770]

Just found you today right now Everything you explain n pronounce is Outstanding

[@milanmastracci]

Thanks brother! Happy to hear that 👊

[@pop455rc]

Thank you for making these amazing informational videos on k-series motors, they will come in handy when I try to put a k-series into my EK

[@milanmastracci]

Great to hear! Thank you!

[@TheGerbsteve]

Nice vid. The accord is fresh. Im in the process of doing a jdm k24a swap into my fg2 rn. This is my first k24 build, so I’m not going all out like you, but I’ll save that for my dream 250hp-300hp k series frank build when I have higher funds. Can’t agree more with the reinforcement rods, stiffer springs/retainers, and proper pump for 8k + rpm. I’ll be revving mine up to 8k max, maybe 7800rpm because I’m running stock pump, stock internals, except 50 degree vtc. Shooting for 225-230hp, 180tq... Intake, header, vtc, hondata, tune 🤘🏼🤘🏼🤘🏼

[@boosted_john]

And I thought my videos were thorough. Excellent work 👍

[@thomascanning595]

Good stuff milan!

[@milanmastracci]

Thanks brother! 🥳

[@radeejarrar6521]

i remember owning an 8th gen k24 accord and how beautiful it sounded getting up to 7,000. literally could feel that ken miles scene from ford v ferrari when i brought it up to its governed speed lol. i wish it was faster at the time but i was driving bone stock too haha

[@jackryan4313]

This dude put in the work...damn

[@666gnarlsbad]

Great video!

[@milanmastracci]

Glad you enjoyed it

[@StillSoundAmazing]

🔥🔥🔥 can’t wait man !!

[@HostmorkeCZ]

Seeing the mileage on your car and the attention to detail with the engine build, subbed. My ep3 is at 265*** and I plan to do a similar build to your accord. I’ll be watching.

[@milanmastracci]

Thanks for the sub!! I'm excited to get it going! 🙌

[@AStClair24]

Very detailed setup Milan.. great job! Owning a Honda is an a curse. You can't get rid of her because she was there with you thru thick and thin. It's the damn reliability and build quality.

[@milanmastracci]

Exactly Anil! It's not going to be easy ever getting rid of her, should that day ever come. She's been good to me for nearly a decade now. Gotta give her the love she deserves!

[@AGHunter1992]

Respect ya. Thanks!

[@willfromthefutur]

Don’t know if you’re up for it, but I’d love to see a similar upgrade to Honda Element only with a focus on torque over power for larger tow capacity!

[@manuelfermin1846]

Beautiful

[@johnr154]

Love the very clear knowledge! Pro status KZbinr! Yee!

[@milanmastracci]

Thank you John! 🙌 I appreciate it brother

[@darryl9244]

thank you milan 🤙

[@hmong337]

Love the thorough and "to the point" explanations. Wanna do a k24a2 turbo on my MR2 some day.

[@johnisfy]

Holy shit Milan, you killed this video. Thumbs up my brotha

[@Jhodder813]

K series is such a great platform

[@milanmastracci]

So true!

[@Jhodder813]

Love the k series got myself a k20z2 csx about 8 months back been loving it

[@Drizzy_LP]

This is encouraging me to get building on my 3rd Gen CR-V. This is by far the best reference point I have considering I’ve seen nothing on CR-V’s yet lol

[@milanmastracci]

Full send man! Its so much fun seeing progress being made on your own cars 🙌

[@Drizzy_LP]

milanmastracci It truly is! Plus it’ll be cool to know I’ll be one of very little people to build a 3rd gen. Only sucks that they never made any manual ones in the US. I’ll have to figure something out I guess lol

[@marlostewart1107]

Everything seems to be so thought out. This engine will be awesome... taking notes.

[@milanmastracci]

Thank you Marlo! I'm hoping it all works together 🙌

[@mickeyyy7571]

This is the youtuber ive been waiting for

[@hectormojica7157]

I liked the video and I would like to know which piston should I use in my accord 2008 K24 and which connecting rods that are similar to the factory ones

[@najuad]

subscribed! I want to see 300hp NA !!!

[@fiftypercent8422]

Awesome video, top ten videos on u tube ☆☆☆☆☆

[@DougSJBrooks]

another quality video Milan , i would not be surprised if you don't get north of 350 hp from this when its been built to be honest

[@germanikus8793]

Your knowledge of Honda upgrades is legendary. Pity you don't have a workshop for the public.

[@buckfutter99]

I built my head with toda parts. Kpro tuned fuel pump and injectors 229whp. 91 medium high tune. Winds up to 9k regularly for the last 40k miles.

[@milanmastracci]

That's what I like to hear 💪

[@DWR438]

This dude is very good 👍

[@milanmastracci]

I appreciate that!

[@Dunwelll]

I don't have a Honda, but I've always been interested in the Lego like building capability of these engines. Plus a bad ass NA build is always cool

[@karumaman]

When you grind away the casting lines and matched the ports to the gasket did you flow bench it to make sure flow rates were similar to one another after grinding it?

[@b-conn6624]

This thing probably pulls very nicely.

[@PaChiLa_Leader]

Awesome

[@XxNYCKIDxX]

I will most def be buying the same stuff you are getting for your build. I am doing the same as well with my K24 engine. Have an 05 accord sedan K24A4. Ive been wanting more power just all motor and i will be doing the same build. My car is an automatic but i am doing a conversion to manuel. The build will take time but it’ll be worth the wait once everything is all set and done. Great info on the parts i would need to achieve this goal. Mine wont be naturally aspirated, i would want to shoot for a close to 400whp, will be upgrading ecu as well with hondata and going E85 and still being able to use pump gas as well.

[@milanmastracci]

I am very jealous you have access to E85. If I did, I could push the engine more and produce more power. But a boosted K24 sounds fun to me!!

[@XxNYCKIDxX]

Yes most def, in the process of it all if i decide to boost it then it wont be a crazy number. I would boost it to the point where it would be reliable and fuel efficient. My next project build that i am looking forward on doing is boosting a EG hatch which would be track and street driven👍🏻

[@kennethpowers8995]

Nice build, these K series are truly amazing engines. My all motor build runs an A2 block @ 89×99 ~13:1, 4P 156 head and I use E85R now with great results. I'm at a DA of under 300ft so NA combos run great and this is no exception. 336whp and over 200wtq on very conservative tuning. As if this isnt impressive enough my old boosted setup made 600+ with the same head and a stock k20a2 bottom end/Gen 2 6262 from PTE. Love the K series platform!

[@ieatass6463]

Nobodys made 600+hp on a stock bottom end. Wha load of horse shit. Brent from pfi speed is rolling on the ground quite literally, laughing his ass off.

[@joeymcquilkin3670]

336whp all motor with conservative tuning… 🧐 That’s literally pushing the overall limits of what these motors can produce, also I’ve NEVER heard of one producing even close to that without being ‘stroked’. Even with a small bore I don’t think your making that. I dunno broooo 🤥

[@kennethpowers8995]

@@joeymcquilkin3670 lmao ok bud. We make 440+ at the tire Na with our stroker builds. And if you notice, the motor I was speaking on above is well overbore and is close to 2.55 liters of displacement when it made that power and the head flows insane air. The 156 head program from 4P is top notch, it gets no better. That engine also had insane cam profiles and very high compression. You obviously don’t know anything about the all motor K game so why comment? Ive made over 300whp with stock bottom end K24A2’s just a good head package. FOH

[@premiumc2282]

@@kennethpowers8995 lol can you please do this to my accord 2011 lxs lmao i just want a little more power where are you located

[@kennethpowers8995]

@@premiumc2282 the accord K24z3 in your car isn’t the exact same as the JDM K24A or USDM K24a2 which are a bit more performance oriented. The best thing I can recommend for your car is a good race header like the Skunk2 for the 08-14 TSX/Accord and then KTuner. That alone will pick up a solid 25-30whp over stock if you’re ok with running premium pump gas in the vehicle. If you finish the bolt ons with a good intake and the aforementioned parts you’re going to be nearing the 200whp mark. If you are talking about making much more power than that you really have to swap On a K20 head and start getting into cam work and more in depth things like that. Or ofcourse forced induction is always an option; these motors love nitrous.

[@flakey7832]

i used to hate this guy, but his new content made me change my mind, good job

[@skateconner]

thank you

[@milanmastracci]

You're welcome 👊

[@nigelmcphearsonletsgobrand9247]

You are so Canadian! 👍🏻

[@Stoptechaccord]

Crazy hows this was done in 2005 and it's still popular! Keep up the good work!

[@Mike-dy8sj]

This was not from 2005