Junkyard Honda K24Z Engine Restoration & Upgrade! - FULL BUILD

Поділитися
Вставка
  • Опубліковано 23 лип 2023
  • In todays video, we tear down this k24z3 from a 2010 Honda Accord, and rebuild it & upgrade it to be a clean, RWD, set up! It needed a surprise full valve job, which I learned to do in this video, s well as a new timing chain kit, head gasket, head studs & tons of new stuff like a. big turbo, RWD Intake manifold & More! This engine will live to see another day & a lot of boost! Now we just have to fab up some motor mounts and see where we end up!
    Main Channel: ‪@RobbieFerreira‬
    Big thank you to everyone who helped this engine come together, make sure you check everyone out down below!👇🏼
    RHB Turbo: I used the Super Six
    rhbturbochargers.ca
    CODE: ROBBIE15
    UA-cam - @RHBTurbochargers
    MPC Motorsport:
    www.mpcmotorsport.com
    CODE: ROBBIE
    Rust-Oleum: Check Below to find out where to find the Products I used, locally to yourself!
    rustoleum.ca (CA)
    rustoleum.com (US)
    K-Tuned:
    k-tuned.3dcartstores.com
    Garage 16: Local Honda Shop!
    www.garage16.ca
    K-Power: RWD Intake Manifold
    kpower.industries/collections...
    Eastwood:
    www.eastwood.com/eastwood-ez-...
    CODE: ROBBIE10
    Go check all those guys out!
    Merch: www.TheCommittedCrew.com
    FOLLOW ME HERE⬇️
    •Instagram - / robbieferre. .
    •TikTok - / robbieferreiraa
    •Facebook - / robbieferreiraa
    SEND STUFF HERE📬
    PO Box 94 Wasaga Beach, ON, L9Z 1A2
  • Авто та транспорт

КОМЕНТАРІ • 400

  • @SeanEurich
    @SeanEurich 10 місяців тому +114

    Tip for taping stuff off for paint… use aluminum foil instead of paper. It forms easily around odd surfaces and holds it shape.

    • @robertfarmer6316
      @robertfarmer6316 9 місяців тому +7

      Wow I’m stealing this… for at least weird angles and shit that’s gotta be 10 x easier?? Cool tip man!

    • @freig22
      @freig22 3 місяці тому

      20:32 ​@@robertfarmer6316

    • @kuntrryboy7078
      @kuntrryboy7078 2 місяці тому

      That is how we do it in commercial and industrial painting.

    • @kuntrryboy7078
      @kuntrryboy7078 2 місяці тому

      ​@robertfarmer6316 I swear it will make your like 10 times easier. You can use that trick on anything, houses, power plants, pipline. I really mean anything.

  • @michaelriver7733
    @michaelriver7733 10 місяців тому +146

    I am so happy that robbie started making videos again

    • @ivanrosario856
      @ivanrosario856 10 місяців тому +1

      Factz his videos are way too good to not be posting

    • @anic6802
      @anic6802 10 місяців тому

      he has the second account he posts often on

    • @juniorguti710
      @juniorguti710 10 місяців тому

      its bobby

    • @Hondaddy
      @Hondaddy 10 місяців тому +1

      ​@@maruiacancer6ur a bot

  • @jbzhitz
    @jbzhitz 7 місяців тому +10

    This is a crazy nice shop for a entry level mechanic. Must have some of that family wealth. Looks fun as hell.

  • @braydenphillips4272
    @braydenphillips4272 10 місяців тому +17

    Former engine builder: I used to (assuming the engine had compression) would dump atf down the spark plug hole into the cylinder 24 hours before tear down then use oven cleaner and carbon comes right off and so does grease/oil

    • @coreygenno9951
      @coreygenno9951 9 місяців тому

      That oven cleaner would damage aluminum cylinder block

    • @sschevmale24
      @sschevmale24 3 місяці тому

      You are so wrong dude. Machinist here too. You need a 6pack of beer to help get th3 carbon off . You need to stay hydrated

  • @nathanielLEGACY
    @nathanielLEGACY 4 місяці тому +25

    Love that he’s kind of a noob here. Called it a piston head hole instead of a combustion chamber. Not making fun. Just love to see someone new at things like this learning to do it instead of getting someone else to do it for them. Kudos good sir

    • @WindyBreezeB
      @WindyBreezeB 4 місяці тому

      super cool comment.

    • @m4xripper
      @m4xripper 2 місяці тому

      wouldnt that be called poser

  • @TruckerBill9
    @TruckerBill9 10 місяців тому +24

    Tech tip: they make weighted sockets that also help removing crank bolts like that

    • @jonathonabel1548
      @jonathonabel1548 10 місяців тому +2

      I had no idea they existed until I snapped my standard & impact sockets. LIFE CHANGER. I bought a whole set 😂

    • @adrianvega4817
      @adrianvega4817 9 місяців тому

      and cheaper. like 20 lol

    • @willleopper2852
      @willleopper2852 7 місяців тому

      Yea that and just heating it up would have helped them too lmao

  • @richard-em6zi
    @richard-em6zi 10 місяців тому +20

    The valve hammer tool is good for removing. Because those keepers get wedged in the retainer over time. The tool in the red box with the bar and lever arm is good for reinstalling for the reason you got it. Both tools are necessary in this case

    • @BRADDG42O
      @BRADDG42O 10 місяців тому +2

      Yes this is the correct way to do this.

    • @williammc3183
      @williammc3183 10 місяців тому

      Definitely needed the leverage tool for reinstalling the valves.

    • @highpol1ce
      @highpol1ce 10 місяців тому

      This is the way

  • @EatSleepShift
    @EatSleepShift 10 місяців тому +15

    Hey Bobby, that last bit of your video really means a lot. It's just what I needed to hear. I've been following your channel for a while, and I see it's something we all struggle as people, as humans. Appreciated! Also, if you change the oil pump in the sump, you can get high RPM, hope it's not too late.

  • @isaaczimmerman7354
    @isaaczimmerman7354 10 місяців тому +24

    Looking good! Something you should probably look into if you're not happy with the valve cover paint job, is powder coating. It looks great and holds up really well.

  • @RollingRoadEFI
    @RollingRoadEFI 10 місяців тому +17

    Burnt valves like that are commonly caused by running the valve lash too tight. Always do your valve adjustments guys.

    • @kuntrryboy7078
      @kuntrryboy7078 2 місяці тому

      Good to know, i was guessing it was from nitrous

  • @dot8243
    @dot8243 10 місяців тому +60

    It might be a little late, but you should consider getting a Type S oil pump for more RPMs. PRL Motorsports make a kit for the K24Z3 which should make it quite easy to install. Besides that, great build!

    • @DCbuildz
      @DCbuildz 7 місяців тому +3

      The whole swap is wrong. I’m not even sure you can slap a k20a2 pump in this. This whole engine design is diff from the rest of the k-series line up

    • @ericburns8697
      @ericburns8697 7 місяців тому +1

      I was gonna say, thinking that it is safe to run a turbo in a stock K24Z3 without changing at least the CR down below 10:1 is gonne ba disaster for him. You basically either run this engine with good internals stock and an ECU, or you get a K24A2 for cheap (~impossible these days) or boost the crap out of a K24A1 from a CR-V, which is probably the best route these days.@@DCbuildz

    • @jeffreyreed3365
      @jeffreyreed3365 5 місяців тому +1

      The type s oil pump is compatible but only with a adapter kit. & depending what the k24z3 is out of its either 10.5 or 11.1 compression, but these engines have longer rods. They're actually great for a low boost build stock, event better with a type s head!

    • @andreiroid4357
      @andreiroid4357 5 місяців тому

      Hb un
      ​@@DCbuildz

  • @moosejaw0027
    @moosejaw0027 10 місяців тому +4

    Dude I’m so hyped to see a thorough RWD k swap build!! I’m k20 swapping my 280zx and can’t find nearly enough rwd kswap videos! Excited to follow along with your build while I work on mine!

  • @DeyGus-gm1sp
    @DeyGus-gm1sp Місяць тому

    been watching you since i knew nothing about motors at 15/16 years old, now im a motorcycle tech and turning 19. crazy how far you’ve come bro, i still miss when i was waiting for new videos of the yellow civic and when you first moved. this is dope as fuck.

  • @phattony9057
    @phattony9057 10 місяців тому +12

    Robby, we need an update on the hot wheels wall you were gonna do...i remember sending you like 3 of them, believe it was a civic and a s10 pickup don't remember the other...keep up the great vids

    • @mammoth-puppy3246
      @mammoth-puppy3246 10 місяців тому +1

      He did say on one of the more recent videos it’s still on the to do list. I sent a few as well. Preludes

    • @JP_A3
      @JP_A3 10 місяців тому

      yeah its been years since he said he was gonna do it

  • @corporalclegg914
    @corporalclegg914 10 місяців тому +1

    I’m a 1st time viewer & I like what I see. this dude has a future, but I bet he gets a ton of unwanted unsolicited feedback from all the Experts that live to hit UA-cam Comment Sections. this is where they can unload their supreme premium expertise on us inexperienced at life. Godspeed, Dude.

  • @jefcah7081
    @jefcah7081 12 годин тому

    This was such an informative video. I've watched it several times and enjoyed it every time......thank you. I would love it if you could make a video on rebuilding a Toyota 3sgte. It's a very popular engine and by giving us the part numbers, manfacturer & the cost of everything used is so heplful. It also gives us an approximate cost of our project. Keep up with these great videos!! 👍

  • @TruZule_
    @TruZule_ 10 місяців тому

    Love the new format! Gotta say probably one of my favorite vids of yours since I started watching.

  • @travismorgan3252
    @travismorgan3252 6 місяців тому

    I was literally in the process of typing "You should have lapped the valve seats" when you discovered the leaks. Good job showing the trial AND the error.

  • @KNIFE1231
    @KNIFE1231 10 місяців тому +4

    Can't wait to see this engine finished!

  • @jesseperez4963
    @jesseperez4963 5 місяців тому +2

    Would have been a good idea to resurface the head and block to ensure a perfect seal on the head gasket. Either could have been slightly warped due to overheating or just regular use. There is almost always some warp after disassembly.

  • @troythegardener
    @troythegardener 5 місяців тому +1

    I don't think I've ever seen a single exhaust port engine before, huh.
    Amazing build though mate, that was really entertaining!

  • @2LegitTooQuit
    @2LegitTooQuit 9 місяців тому +3

    Awesome build. And your gentle valve removal tool works when you air the cylinder up.

  • @ButteredToast_93
    @ButteredToast_93 9 місяців тому +3

    The lever kit is used when reinstalling the valve spring keepers

  • @residentduke891
    @residentduke891 10 місяців тому +1

    Loved the long video, very interesting 👍 Keep up the great work dude.

  • @garyschott9752
    @garyschott9752 10 місяців тому +2

    Really good video. I'm only half way through so i may be speaking too early but i stopped when you was putting springs in . But lapping your valves is always the first thing you do. They make s compound for it. It marries your surfaces ...... damn it i spoke too soon lol carry on..

  • @kainine09
    @kainine09 10 місяців тому +2

    45 minute video! FUCK YES!

  • @Teocbarnard
    @Teocbarnard 10 місяців тому

    This looks f***ing sick glad to have u back🫶🏾

  • @Enthusiast416
    @Enthusiast416 10 місяців тому

    I'm so happy I found your channel man. I clearly live really close to you because garage 16 is where I bought a lot of my parts and Nick is actually the guy who tuned my last Civic that I just sold lol! Really cool to see someone close to me making quality videos. I've slightly attempted a UA-cam channel but didn't push it too far. But recently bought a new car so perhaps it's time to start lol. Great videos bud

  • @ballzkickgaming2287
    @ballzkickgaming2287 9 місяців тому +2

    Dawn power wash works really well as a wheel detailing spray used it to clean the wheels last week works great

  • @paufishing3782
    @paufishing3782 10 місяців тому

    I’m going through this process right now. Thanks for the vid!

  • @kennysoule222
    @kennysoule222 3 місяці тому

    "Nothing ever goes as planned, and that is okay. Whether everybody on UA-cam shows it or not. This is life and everybody kind of gets served the same s***, it's just what you do with it that counts" -Bobby 2023
    One of the best quotes on UA-cam

  • @horsied
    @horsied 10 місяців тому

    super dope video. thanks for showing the z3 love

  • @eighty8fps
    @eighty8fps 7 місяців тому

    We love you man. Thank you for everything

  • @Gray_Ti
    @Gray_Ti 10 місяців тому +1

    Love this! I'm planning to swap my genesis with K20 engine. This will be an awesome guide. 👍🏻

  • @scottbartlett4853
    @scottbartlett4853 6 місяців тому

    Cool video, thanks! One humble suggestion: I used to I used to say "Basically" all the time and once it was pointed out to me I was able to change this habit that I didn't know I had. You tend to say "so I went ahead and..." a little too often.

  • @anthonysalinas6195
    @anthonysalinas6195 10 місяців тому

    Im glad you did this rebuild. I have a civic with this engine and I'm planning to do this rebuild.

  • @phothrottle
    @phothrottle 10 місяців тому

    Very satisfying to watch. 👍👍👍

  • @husssaina2957
    @husssaina2957 10 місяців тому

    First video of the channel I’ve seen and I subscribed immediately from the first minute

  • @menumlor9365
    @menumlor9365 5 місяців тому

    1:35
    That’s my favorite part. I spent 2 weeks trying to get the crank pulley out my k24. I was even using the Honda specific crank pulley tool for it to. My neighbor came over one and I kid you not all he did was took one little step and in less than 2 mins he got it with almost no effort. I felt so dumb. That was a lesson learned.

  • @joshuagreen9666
    @joshuagreen9666 10 місяців тому +3

    Just a heads up the 2 bottom bolts on the timing cover are shouldered which aligns the timing cover if it's off there's a chance the crank pulley will eat the front seal

  • @s-r-e-m-m-u-s
    @s-r-e-m-m-u-s 10 місяців тому +1

    Another banger guaranteed 🔥

  • @horizonnp5153
    @horizonnp5153 10 місяців тому

    It's cool that you're showing every little step bc most other UA-camrs who build or boost engines just boost them then the engine blows up or they fully build them but leave out all the technical details and just show the start and ending when installing just the turbo.

  • @loganloechel2483
    @loganloechel2483 10 місяців тому

    Great video man! I watched the entire thing

  • @tylerjohnston9189
    @tylerjohnston9189 10 місяців тому

    Hell yeah dude, right on my lunch break

  • @Fat2Fit5k
    @Fat2Fit5k 10 місяців тому

    Always up for another video!

  • @basterbogt
    @basterbogt 10 місяців тому

    Amazing video! looks great

  • @droppinghertz9922
    @droppinghertz9922 10 місяців тому

    U no what da Say a loose value is a Happy value Tru Story 💯

  • @Lil_Javi21
    @Lil_Javi21 10 місяців тому

    I love that hardware man! Waay better!

  • @1irishman1976
    @1irishman1976 9 місяців тому

    That is just beautiful just beautiful

  • @ajbreaks
    @ajbreaks 6 місяців тому

    Well done, nice video

  • @Coptin
    @Coptin 6 місяців тому

    The second I seen the crank pulley, I knew the struggle

  • @sjaybeats560
    @sjaybeats560 9 місяців тому

    I like watching your builds🔥🔥

  • @Partimegamer133
    @Partimegamer133 10 місяців тому

    Rick from garage 16 for the win! Amazing guy and great store.

  • @pierstonsalinas940
    @pierstonsalinas940 10 місяців тому

    You haven’t came on my feed in a very long time. Wish days

  • @rjechols2059
    @rjechols2059 7 місяців тому

    Bro. Love it so much

  • @yotarip
    @yotarip 10 місяців тому +2

    Great work but we shouldn’t ignore the fact that you called the the combustion chamber a “ piston circle” 😂😂😂

  • @skippersanimals
    @skippersanimals 10 місяців тому

    Solid video

  • @koenkoopmans3959
    @koenkoopmans3959 10 місяців тому

    the white cover is siiiiick dude

  • @BellozeCountry
    @BellozeCountry 10 місяців тому +2

    Great information bro. I have the same engine from an Acura tsx 2013, k24z3 and I was so worried that I should have gotten a k24a2 because of rbb head, this video gave me incredible confidence in completing my 88crx S-1 built AWD BUILD. Way to go guy.

    • @chrisb15679
      @chrisb15679 9 місяців тому

      My 2011 tsx k24z3 makes over 225whp and 170 wtq with basicbolt ons and tune. They can make power if you mod them right.👍 if you intake manifold swap, rbc,rrc,ect.. port match it to the k24z3 head, it has the biggest intake ports of all kseries.

    • @DCbuildz
      @DCbuildz 7 місяців тому

      Not just the head… but the block itself is diff as well. Not sure if there’s even any aftermarket support for these. Simply starting with the another k-series engine is 10x’s better just FYI

  • @johnrtrucker
    @johnrtrucker 5 місяців тому

    The reason you dunk the head studs in oil is to get an actual torque reading because dry studs with dry threads creates additional friction so you can end up under torqueing the studs by a few foot pounds so oil gives you an actual reading

  • @mlt_ev7977
    @mlt_ev7977 10 місяців тому

    Need a vid like this for a ls6

  • @djyond3rrr
    @djyond3rrr 10 місяців тому

    Right on time

  • @danielsnell7605
    @danielsnell7605 10 місяців тому

    Look how far you've came

  • @troymclean9597
    @troymclean9597 9 місяців тому

    In school we used a large special c clamp for the springs.

  • @johnsmith-ik4xp
    @johnsmith-ik4xp 6 місяців тому

    A helpful hint so you don't have to hammer your fuel rail down onto your injectors is put a very thin amount of Dielectric grease on your O-rings and it should slide down over the injectors very easily. When you start hammering fuel rails down with your fist is when you start cutting O-rings. I hope that helps!!!!

  • @ViktorJ0van0vski
    @ViktorJ0van0vski 10 місяців тому +1

    For local shops myb in the future go and meet the people and myb get a tour of their shop and stuff that would be fun to watch learns sth new and plus content.

  • @customcreations586
    @customcreations586 10 місяців тому

    100% following this engine cleanup on my s10, the oil pump upgrade is my next purchase. Ima need a hookup for a shortie top mount turbo when your guy gets it sorted out! Also interested to see what injector size you go with, I’m hoping for about 500 whp. The driver side motor mount has been slowing me down for quite some time now due to how far back it is in relation to the passenger side mount.

  • @fredlanning9373
    @fredlanning9373 Місяць тому

    Good luck with them head bolts

  • @davidp605
    @davidp605 2 місяці тому

    Sick!!!

  • @thedavegamer5279
    @thedavegamer5279 9 місяців тому

    First time I’ve ever seen someone lap valves with a drill

  • @Start_TheArt
    @Start_TheArt 10 місяців тому

    The infamous honda crank bolt

  • @Bikeguy199
    @Bikeguy199 10 місяців тому

    Looks like someone beat me to my build plan. Waiting to see what you do with yours vs how I want to do mine🧐

  • @isaiahleach1604
    @isaiahleach1604 7 місяців тому

    Had to get that same tool to get my crank bolt off in my 94 accord. Got a $20 one from rockauto and it worked wonders.

  • @captaincunuck4215
    @captaincunuck4215 5 місяців тому

    Bought a 2010 acura tsx as my first car. Then realised. It had a k series engine and absolutly love itm woulf love to modify it some more

  • @chucklanman3315
    @chucklanman3315 5 місяців тому

    normally when putting on your timing cover, you should put your counterbalance on the crankshaft after you set the timing cover on, so it lines up perfectly in the front seal before you tighten down the timing cover. Also replacing the front seal on the timing cover is always a good thing to do as well when you have it off.

  • @Xatxitor
    @Xatxitor 9 місяців тому

    K serie rebuild? Looks fun... oooouh Sweet 300ZX

  • @metalmessiahmetal
    @metalmessiahmetal 6 місяців тому

    love if tht exhaust mainfold had a downward tilt would make packaging that turbo much neater

  • @user-wz1xu6ep5s
    @user-wz1xu6ep5s 10 місяців тому

    Suggestion: look into the sheets that painters use, like the cloth ones so you can have those on hand and not have to worry about spraying the floor. Plus, they should be reusable... just an idea

  • @kevincontreras6472
    @kevincontreras6472 9 місяців тому

    What I do when cleaning up a head is take all the valves out and clean each one and clean the intake and exhaust sides internally, I also Lap all the valves while they are already out just what I like to do to absolutely make sure everything is nice ready to go and sealed

  • @TonysTrailHawk
    @TonysTrailHawk 8 місяців тому +2

    When I worked at a Honda dealership, we got 2 CR-Vs K24Z7 which had no compression cylinder 3 on both. We came to the conclusion that both vehicles used the cheapest fuel grade causing pre-detonation on just that cylinder, eventually burning a hole in it. One of those engines made it into my garage after paying the $125 core charge and a few weeks later I got my hands on a K20Z3 Head for the $100 core charge. You should consider a K20Z3 Head K24Z7 Block build. 260hp all motor. Just an idea.

    • @sschevmale24
      @sschevmale24 3 місяці тому

      That's what I was thinking using regular instead of premium. Detonated. I would of rebuilt that head

  • @DCbuildz
    @DCbuildz 7 місяців тому

    As per a “gentle” way to remove valve keepers 4 piston sells a tool that is basically a small plunger with a bolt and you can tighten it down to give the springs tension. Then you go in with a magnet pen and pick the keepers up. For next time 🤘🏼

  • @christopherelrod8788
    @christopherelrod8788 10 місяців тому

    What i did was compress the spring with a jack and the bottom of my box ziptied the spring compressed (making sure i could get the tie out) and just put it all together and cut the ties making sure the keepers were fully seated

  • @GoldenSim27
    @GoldenSim27 9 місяців тому

    i use paint thinner , its cheap and found everywere , disolve carbon pretty well

  • @HoloScope
    @HoloScope 10 місяців тому

    Love the 999 Tattoo!

  • @kuntrryboy7078
    @kuntrryboy7078 2 місяці тому

    I use krud kudder is great for a lot of things

  • @ACURACLTYPESLOW
    @ACURACLTYPESLOW 5 місяців тому

    They make a specialty weighted socket for removing those crank bolts. Dealer tech for Honda/Acura, use one almost daily, zips those off in seconds.

  • @meinrapture
    @meinrapture 5 місяців тому

    That filter looking piece was a screen for the vtec solenoid

  • @TheDon8771
    @TheDon8771 10 місяців тому

    I have the tool from my Honda days. I wish I knew you needed it. It’s sitting in my garage and collecting dust.

  • @johnathanespinal3619
    @johnathanespinal3619 9 місяців тому

    Crystallized valve, it mostly happened on Sunday drivers.. had this happen on a b18

  • @quitespy8756
    @quitespy8756 9 місяців тому

    Btw break clean leaves an oily residue I recommend isopropyl alcohol as it doesn’t leave any residue behind

  • @TheMonsterKid94
    @TheMonsterKid94 10 місяців тому

    hang on, where is this engine going? in the drift geni? thats awesome man. honestly the advice at the end really hit home today. thanks man. i got this

  • @samrogerskeeponkeepingon1486
    @samrogerskeeponkeepingon1486 9 місяців тому

    The crud cutter ate right through your valve LOL 😂

  • @iron-gamerstv
    @iron-gamerstv 10 місяців тому +1

    Finally our Z engines getting some Ytube love. I'm also using the purple garnish for the engine. Ive been going back n forth on how I want to make power (for a year) I bought a K24A2 head I was going to use. But now I'm feeling like a turbo might be the easiest way to go. I'm definitely going to your guys for the turbo. I like the triple bearing look. Are you swapping in a Manual?

  • @noahanderson1368
    @noahanderson1368 9 місяців тому

    I was gonna comment about needing to lap the valves then saw you do it after

  • @slamblackek9
    @slamblackek9 10 місяців тому +1

    Need a k24a2 cylinder head

  • @RanRan1109
    @RanRan1109 7 місяців тому

    Tip for harmonic balancer removal
    Product: Lisle 77080
    19 mm harmonic balancer socket. $23.99 USD(if you get it in sale)
    19mm big mofosocket . Use any (automotive) Regular impact, 3 uggas will zip any balancer off or your money back.

  • @GeminiWoods
    @GeminiWoods 10 місяців тому

    I was like, wait, he's not going to lap the valves??? Glad he figured that out. Could have had some serious problems if not.

  • @mikkelr1
    @mikkelr1 10 місяців тому +2

    Robbie! Burned valves often comes from oil burning, thrue oil rings on the pistons
    Consider new piston rings and oil rings for a cheap insurance that it doesnt happen again

    • @mikkelr1
      @mikkelr1 10 місяців тому

      @robbie

  • @6000pounds
    @6000pounds 9 місяців тому

    "Inline pro, never even heard of these guys". First s2000 wheelie at a drag strip.

  • @UniqueDUBer
    @UniqueDUBer 6 місяців тому

    ARP does make head bolts for both K20/K24 blocks. They are L19 ARP head stud bolts.