What You Need to do to K24 Swap a 8th Gen Si (K20Z3 to K24)
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- เผยแพร่เมื่อ 13 ก.ย. 2022
- What You Need to do to K24 Swap a 8th Gen Si
By Brian Gillespie and Aaron Gaghagen
What is better than a screaming K20 ripping iVTEC all over the place? If you answered "Nothing," you'd be wrong. And if you answered with "Your mom," you'd be immature. The real answer is a screaming K24 ripping iVTEC all over the place with it's sweet bump in torque and top end power. In the real world the best replacement for a K series is a K series. The 8th gen Civic Si already K powered, but it is not a straight up swap. We show you what needs to be changed to get a K24 into the engine bay of your FA5 or FG2
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VTEC Academy videos are for educational and entertainment purposes. We can not guarantee the modifications performed in the video are legal in your locality. Do not do any modifications to your vehicle that will void your warranty or in any way violate your local laws. We assume no liability for property damage or injury as a result of any of the information contained in this video. Use the information provided at your own risk. - ยานยนต์และพาหนะ
Oh so you're just going to do a step by step video guide for the exact swap I need for my exact car? Might be time to step the content game up guys 😉
The Torque difference between the K20 and the K24a (3 Lobe) / K24a2 in the 8th gen is absolutely insane! also it comes with about a ~20% Horsepower scaling gain with mods! There were like 3? small things I had to do to make the K24 drop right into my FG2, and I literally ran it for a few years without a tune lmao!! It did bog a little bit at lower RPM, and was a monster once I dyno tuned it, but yeah this swap is amazing, and the engines are so cheap! I would never go back to K20z3!
I have a 07 fg2 si and have a jdm k24a swope and love it so much. A 4banger with torque!!! With the stock 6speed it makes it so fun to drive. And I run it to 8k rpm and don't have the k20a oil pump. Runs smoothly and don't miss a beat at 8k. Keep pulling like it wants to go higher rpm.
I have the same JDM k24a with the k20 oil pump kit, in a ep3 and I love it. Rev it to 8k rpm, and it pull’s hard af.
Do not chnage the oil pump, the Type S or type R pumps dont have balance shafts and it causes so much vibrations. i hated the swap and switched back to Si oil pump.
@@A.QPerformance ya I was told by everyone it had to have the type r or k20a oil pump or it wouldn't last a day driven it over 7k rpm. The guys that did the swope said they never do the pumps do to how bad the vibration is. Unless racing it or wanting to go over the 8k rpm mark then the guy said it be best to swope the pump. But I plain to keep it as a street car for now so I want it comfortable to ride in. I did pick up the hasport 70a race motor mount set to hold the motor from moving like it does with stock mounts. Seems the k24a has to much torque for them and has broken my exhaust near the cat do to moving to much. So I got a header made for the k24 swope in the 8th gen and a full stainless steel exhaust to put on it here soon with the motor mounts.
@@saticritatis2503 I bet it's fun to drive. Does the ep3 have a 6speed lsd Trans like my fg2 does from stock ?? I'm told I should look for a 9th gen si 6speed since there saposta be little stronger than the 8th gen I have.
@@A.QPerformance Amen to that. Coupled with stiffer motor mounts, it can absolutely ruin a good street car.
Have you ever messed with a MPx90 supercharger? Looking to put one on my k20z3. Love your videos!
Thanks guys
The amount of knowledge you have is incredible. I've been doing so much research on building my 09 si, and it's overwhelming. I want to build a motor, but I don't have the confidence to do it myself. I don't want a shop to do it because I love to learn and do work. Hopefully I can find a shop in Phoenix that I can pay to do the build, but also let me help and teach me.
I'm not sure who that would be. Most shops don't like you hanging around while they work. Perhaps one of the other TH-camrs in the area?
I worked in a shop, but that was over 20 years ago back in New york. This sort of stuff is a little advanced for my skill level. I've done a lot, but there's a lot I haven't done yet. I'll have to learn the way I've always done it. Just go for it and find good sources for instruction.
If only you guys were in Canada ❤️
Brian is the best
I thought we were about to see that winning car get some more displacement!
Awesome 👌
Which belt side you guys used because i dont see the A/C and i like to used the type r oil which parts do i used not have any problems? Thank you
What’s the wheels brand and spec on the red si ??
I have a 06 R18 sedan I am wanting to put a K24 off my 06 Crv SE AWD I’ve heard it’s possible. Do you thing it will work? Has anyone else tried this ? Are there any guides of what not to do ETC? Thanks
Many of us are having issues with the rear lower mount not lining up at all and spaced out. Any solutions?
I have a 2008 civic si about to hit 300k miles. I want to do this upgrade. How much do you guys charge?
Just installed the k24a2 with a type s pump, z3 pan how much oil will I need? Can’t find much on the forums besides trusting the k24 dipstick. I feel like I have to add way too much for it to start reading on the dipstick.
Does the K24 mount up to the Civic Automatic transmission?
Does it matter the year of type R or no
Whats the fitment like? Is there room around the engine to do basic maintenance? I saw one pic of a K24 in an 8th gen and it looked like youd need to drop the motor to get to spark plugs.
no defo don't need to, you remove the metal drain piece under the cowl and you can get to the spark plugs no problem, I've done it many times! Only difference is the engine sits a little higher than the K20, so certain things don't work exactly as they did, like the Skunk2 Alpha Header, but supposedly the old Megapower does?
So you don't reccomend using a type s oil pump with a k24 that has a 06-11 oil pan because the pan is taller than the steel pan that comes with the jdm k24?
you can just need to make sure you top it off with oil since it takes about an extra quart
Does eliminating the balance shaft increase vibration and noise a lot? Seems like there's two options for a K24 into a FG2; modify the the stock K20Z3 pump housing or use the RRC Type R pump and parts at close to $500 for everything. I've never seen another build modify the the K20Z3 pump. Seems like everyone just uses the K20A2 (Type S) pump. Which scares me a little with the higher oil pickup.
It doesn't seem to.
Not covered in the video, but presumably you would swap over most sensors from the K20 to K24? What about things like the water pump housing and VTC gear? And assuming you need a specific header for it too?
You don’t need to do any of that.
@@VTECAcademy Thanks (10 months later reply). So to clarify- if swapping the K20Z3 pump over, just need to cut the ports (no oil blockoff etc needed).
I have been following you guys on a bunch of videos. For some reason, I tried to duplicate the wheel set-up that you guys have on the Civic and the Konigs 17x8' with 45mm onset wouldn't fit. It touches on the inside and it hits the Tein Flex coilovers. I know you guys are running the Progress CS suspension and perhaps is better designed. Even my stock 17" OEM wheels barely clear, I have maybe 8mm of clearance between the wheel/tire and the Teins. I can go and put spacers but I don't want to, do you recommend any other 17" wheels that fits with the Teins?. I am looking forward to see the K24 on that civic, specially whenever you bring it to musselman circuit
Get a set of spacers that's just thick enough to get the rim moved out from hitting in the back. That's what I seen most people run and didn't know y till I seen this kinda comments. I'm glad I went with a 17x7.5 with 35mm offset. All tho I haven't put them on yet and mite need a thin spacer myself.
@@mikellewis2346 Mike. Thanks for the response. The manager at discount tire told me to go with something narrower and with an offset 40 or 35. What 17x7.5" with 35mm did you ended up getting? I am literally trying to get a set of wheels right now. Your help is much appreciated.
@@rs3tuber425 the set i got were off ebay and can't think off the name off hand. Do you have your car lower ?? I know most guys go with a 17x8 for more grip/traction. But like I said most will run a small spacer also if the offset isn't fitting.
@@mikellewis2346 I ended up buying Enkeis 17x7. They are very light and they fit just right. Days prior to this(last week), I had discount tire ordering Konigs backbones17x7.5 but they were 20.8lbs but I was able to change the order and scoop the RPF1s which are just under 16lbs. Thanks for your responses.
@@rs3tuber425 no problem. Glad to here u got something good. That's a common good wheel for the 8th gen. I will prolly end up with a set myself for track driving.
What specs should we look for when doing the clutch. Is the flywheel a different thickness? Can you use any clutch for a k20/24??
Any K20/24A or Z series flywheel with a matching clutch will work.
Hi! How much oil does it have with the original K24A oil pump and Z3 oil pan? Thanks😊❤
If you ran it a quart high, it would not cause a problem with windage. It may not be ideal if you take it to the track though.
How much oil in quarts did you guys use with this setup?
I run my oil a little above the top dot to help with baffling the oil, as if there was a 3rd dot up spaced the same, I run it in between those imaginary dots, a lot of track RSX guys do it, never had any issues with it. iirc a quart or half a quart high is no problems, there is like 1.5 - 2 quarts extra of space before you start getting problems?
the k24. can work with the k20 ECU or i need hondata flash pro ??
yup no problems. I actually ran my K24 on the stock K20z3 tune for like a year lmao before I tuned it with Flash Pro. It bogged at low rpm if you put your foot down, but was okay up top.
👍👏
You too!
Nice!! Do you guys wanna do my swap for me ? That would be awesome
So you don’t just put a k20z3 head on a TSX 06-08 bottom end ?
I have had a Frankenstein setup as well as a full K24a 3 lobe, both work no problems.
What if I dont change the pick up and just run the type s pump on my 8th gen….I’ve been running it for about 2500 miles
It’ll probably only be a problem at the track.
@@VTECAcademy I’m about to run a gt3076 pushing 400hp…am I still fine ?? Just a street build. I have 2008 k24a2 is the pick up still sufficient enough for a turbo setup?
So I have a K24A2 in my CRX, what is a good oil pump pan combo? Type S pump I heard could starve the engine of u have the wrong pan??
I bet that's a blast to drive. The k24a in my heavyweight 8th gen rips so I can only imagine how nasty it be in a lightweight crx 💯❤🤘
@@mikellewis2346 I'm sure it will be, I'm not quite done yet. I need exhaust and cooling system. I just ordered a Mishimoto radiator so I'm closer. It was an automatic car. Here is an old video of my other cars but the CRX is there. th-cam.com/video/jS4qwUfMPRw/w-d-xo.html
@@bobbydelamar606 man the more I see the crx with a k swope the more I want one. I had a 85 crx that was fully caged out and jdm d series motor and trans that was so awesome. I couldn't ever get the title from the guy I bought it from and ended up selling it for parts. That was 20 years ago. Lol but I have the stock k20z3 from my 07 civic si that has a spun bearing that I'm planning to rebuild here in the future. I just mite have to find a crx and swope the k20z3 into it.
@@bobbydelamar606 nice cars also by the way. Did u have trouble with the motor being to tall to close the hood?? I'm thinking the k20z3 shorter motor will fit easier. Least I hope. Lol
@@mikellewis2346 You totally should do that swap! I want to see pics when you do. Unless you have the money now, just do like I did and take your time. I'm excited to get it running so now I'm in a hurry cause im close. Vtec Academy and Young Static videos helped me ALOT.
2008 Civic Si. K20Z3 to JDM K24A2 swap. I'll just need to put the K20 oil pain on the K24, correct?
You should put the pump on too.
@@VTECAcademy Thanks. One more question. Will the stock K20Z3 exhaust manifold work with the K24A2? Any clearance issues?
@@Jerryh31yes it fits
Ecu is fine running it or will you need ktuner or something
You'd probably need hondata or ktuner because it's a completely different motor.
@@grant6985 I have k tuner just wondering what ecu was needed
ecu is fine running it will just be a little lean not dangerously lean but a re-flash will make a big difference
Easy peasy for an Si ...
What about the header?
you can use the oem header , or space the rear mount on the oil pan with washers about 1/2 inch
with most aftermarket ones^\
But will the type s pump be fine...?
yes you can rev higher than 7k but the vibration is unbearable for street driving
@@sovan781 I mean the difference in the height for the pick up point
@@jeffreyreed3365 Curious about this as well. I have a K24A2 with Type S pump (done by a lousy shop, in hindsight) that spun a bearing, and now I'm wondering if the oil pick-up was part of the culprit.
Nah not needed unless you are planning on revving above 8000(on a k24). You will hate vibrations
@@mattanderson1719 Yeah the k24 steel oil pan is not deep enough. So most probly your oil pickup was choking. You have to use Type S or Type R oil pans.A hint : the are Aluminium
What header with the k24 ?
I have heard the Skunk2 Alpha Header doesnt work but the old Skunk2 Megapower Header does?? not sure, I am still on stock header with high flow cat.
Do you guys sell conversion kits? I’ve got an fg2 and would like to put in a k24.
They're giving you the information for free. You don't need a "conversion kit"
I have a fg2 with k24a swope and it only takes a crv motor mount on 1 side and to make the exhaust fir perfectly a k24 8th gen header made for the swope. And the header Isa must. Just take everything electronic off the stock fg2 motor and swope n it over to the k24. Think the water pump also. It's basically a drop in motor. The motor mount u can find for 2 buck's on ebay unless u buy the pretty aluminum one some companies sell for the swope. U can also put the 50°vtc gear on the intake cam if u have someone that can tune the cars electronic stuff to make it work properly I beleave. I just kept the stock 25°vtc that came in the 24a for now. This winter tho I'm doing a bunch of stuff to my car.
Is swapping over oil pumps absolutely necessary? I swear there's a lot of people who either use the stock k24 oil pump with the z3 pan or rsx type s oil pump, especially if its just for street driving. The only problem I can think of would be under high G corners and the pickup gets starved of oil since there's no baffling in the pan.
I've been running my kfrankp up to 8g for 5 years, and it was one of those jdm swaps. i just ran the stock jdmk24a oil pump. No problems at all.
whats the cost
That really depends on what you par for the K24 and whether or not use use the stock oil pump and oil pan.
Why in the heck would you go from a k20 to a k24 that is like buying a civic or buying an Acura everyone wants the Acura but they buy the Civic and put the Acura parts pretending to be an Acura let me guess you are going to put an Acura TL k24 engine in a Civic ;) I say ECU and weight reduction remove 3 to 4 hundred pounds and then you have a really light fast car that drives amazing.
Power.
mmm... what about Flashpro, weight reduction and a K24 and then you have a really light *very fast* car that drives amazing???
Joking aside. Torque. There is no replacement for displacement. K24 and K20 are both designed and made by Honda.
Swap a Honda engine into a Honda pretending to be an Acura(is a Honda)?
Don't overthink it my dude...
Ok so this vid starts off already confusing. I have never ever ever heard of having to machine your oil pump. you are putting in a k24, why do you need anything from the k20? Most people just slap on a type s oil pump and call it a day. idk what kinda voodoo you are trying to achieve, but its confusing. This could have been a really informative video with a little structure to it...
I agree the video is not clear. But machining RSX type S oil pump is very common mod for a high reving k24
@@HBRDynamics Type S oil pump on K24 has definitely been the Internet's advice for years -- but now I'm wondering, does it place the oil pickup too high?? As I understand, the machining refers to what Brian describes at 3:05 to clear the block reinforcement. Nothing to do with the oil pickup.
He answers both of your questions in the video. You need the K20 oil pan in order to bolt up the rear mount. The fact that you think people are "slapping in Type S oil pumps" and you have "never heard of having to machine your oil pump" makes it pretty clear that you have never done the wrenching yourself.
@@mattanderson1719 now I'm wondering the same thing regarding the oil pickup. I've done a lot of research and watched a lot of videos and no one has ever mentioned using anything other than the type s oil pump with the z3 oil pan. I've got a type s oil pump already installed on my k24 and was planning to do this swap soon. Now they have me worried.
It's crazy watching your guys vids and the knowledge you guys know about these Hondas....and I live in the city where they make all the Hondas...and you can work as a temp to get a job in the factory so easy...everyone in this town drives Hondas and the junk yards are full of them....they would pay you guys some much money for the knowledge you know about their motors......Marysville Ohio
That would be so awesome. Honda's aren't common here in Sydney Australia, a good K20 engine like a K20A or K20Z4 sells for 4 or 5k here without the gearbox. It's insane. Just out of curiosity, how much would a k20z3 be there?
Z3 1200