Honda OEM Turbo K Series- K23 Tech Inspection Part 2

[@BHondo86]

Thanks for these videos. The RDX k23 has always been a bit of a unicorn. Red headed step child if you will. I service 3 or 4 different ones regularly and they are a blast to drive.

[@GabrielOrtizUAP]

This is gonna be interesting. I used to have an Rdx and always believed the k23 was best left in that chassis due to lack of manual transmission unless someone made an adaptor plate for it to fit a k20.

[@elmayimbe_the_amateur_mechanic]

FWD K23 with the K20 turbo Accord 10AT? Will it work with an adaptor plate?

[@Abu_Teazy]

One could essentially use the K23 engine with an all wheel drive CRV or element transmission with an adapter plate, and do a RWD conversion using any of the AWD kits out there and use a differential from a RWD car. you could also install the drags full to lighten up the weight on the ring gear. I’m sure this isn’t cost-effective what I have talked about here but it definitely would be unique

[@wocctechphone9684]

Nope the rdx has its own Trans and motor bell houseing all other crv and elements bolt up to k20 trans

[@ronaldfaucette7838]

From what I heard, the K23 is designed to use the Honda V-6 style transmission. Have you guys tried seeing if the 6 speed manual from the Accord V-6 or the Acura TL 6 speed manual fits on there?

[@VTECAcademy]

It uses a transmission that is similar internally, not externally. The bell housings are totally different. Also, the starter mounts on the transmission on J and engine on K.

[@ai031191]

Would it be possible to swap the housing and internals over?

[@ronaldfaucette7838]

@@ai031191, possibly, I think it would be easier to use the k23 head on a k24 bottom end. Then your options are plentiful.

[@gtgodbear6320]

I want to see a 1.6L K20A2 de-stroker build. Shave the block down. For a ae86 in 1.6L racing class. I bet it would dominate all.

[@TrackSol]

Brian, if you are planning on just trying the K23 heads onto a K20 and K24, could you see if the K23 crank and rods will fit into a K24? A little destroke might be good for a mild NA build by increasing the rev range.

[@bonjouravecuns]

The problem with high reving k24 is the 99mm stroke not the 87mm bore

[@knix2for5]

they do fit on k24 ! the k23 crank is also 2lb. lighter than the k24 crank and it has the same stroke so it will free up more hp by lightening your rotating assembly .

[@danielwilliams214]

So the k24a2 rods are smaller than the k23. People are making a great amount on hp/tq on a stock k24. With k23 rods could push it even higher

[@knix2for5]

for wayyyy cheaper too

[@danielwilliams214]

@@knix2for5 you can get forged rods for cheap now. No point unless you got the k23 for free.

[@knix2for5]

@@danielwilliams214 i doubt it would be cheaper than a acura dealership oem parts . You would only have to change the rods bolts with arp bolts for added strength . That also means you can run oem clearances for bearings .

[@danielwilliams214]

@@knix2for5 you can get evaluated rods for cheaper and they already come with arp bolts.

[@scottyhankemeier9380]

@knix2for5 Rod bolts don't add any strength to the Rods. The load is on the top bearing shell. The only advantage to using rod bolts or studs is weight savings.

[@paulrobinson3528]

Honda like to reuse there parts bin...............if it ain't broke, don't fix it!!!

[@specr97]

cant wait to see a budget high comp k24 build with rdx rods and type s pistons (heard its around 12:1 cp in a k24)

[@knix2for5]

depends, on what head he uses if he uses tsx head and nippon racing pistons comp is like 13.3:1 type s head drops it to 12:1-12.5:1

[@specr97]

@@knix2for5 i thinks that's the rrc piston that brings it to a 13.3 cp I was referring to the prb one little lower cp good for pump gas on a full k24

[@hiaceglxr]

🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲 loving the series, just a tip tho, it would be easier to test fit the transmission with the flywheel side of the block straight up in the air, and just put the transmission on it to get a closer look

[@BrianGillespie_brianathasport]

True and honestly I should have put a flywheel on to show the size differences, but I already knew the transmissions wouldn't fit.

[@hiaceglxr]

@@BrianGillespie_brianathasport I know,...... fyi I followed your budget eg series and got the idea from you guys to use the element harness with the 05 accord ECU(kutner)and did a k24a2 swap in my 93 Nissan hardbody with custom adapter plate reusing the stock gearbox, once again loving the content from the channel

[@lcameeno1]

lava

[@matthewpittmann7073]

Could you try the second gen style of j series transmission? It’s obvious the first gen won’t bolt up.

[@JAMTOAM]

Was planning on buy an 07 to 09 rdx turbo with like 260 000 kms are they reliable

[@ivanmorales1407]

Bunch of lies !! In the 1960 ' believe or not Bruce Lee used a similar divice .

[@kylesellz1909]

Will a k20 head fit on the k23? Did I miss that video? Lol

[@mandoman9163]

Can't wait to see what else you guy's find out. I would love to use this motor with an AWD-K transmission I'm hoping hasport will make a kit to make it happen

[@VTECAcademy]

I think the solution is just to swap the head.

[@andrewhart9941]

Is there a video of the RDX head on a K24 block that you mentioned towards the end of this video ? Or the Nippon Racing piston w/ RDX rods in K24 block?

[@VTECAcademy]

We are working on that now.

[@BiggySeth]

This is the build I'm going to attempt on my Honda Element! About to strip a k23 and use the head, turbo, better rods, squirters, and maybe even the oil pump if it fits!

[@VTECAcademy]

@@BiggySeth Probably not the oil pump.

[@judeboucan1446]

This video was so educational! That's why I love supporting u guys as hasport, so much research goes into parts development thanx for making great products!

[@VTECAcademy]

We appreciate that.

[@pph5768]

K24A2 is the man

[@bseries8826]

I concur

[@knix2for5]

still...

[@fortunesk89]

K23 Prices tanked until the mention of the rods and squirters 😂 can you test the k20a/z and l15 trans to the k20c motor?

[@BrianGillespie_brianathasport]

Yes

[@knix2for5]

@@BrianGillespie_brianathasport do you think the tensioner you showed would work on k24 ?

[@Edboy23hoops]

Thank you for the video i learned a lot!! 🙏🏽

[@BiggySeth]

Any updates on this?

[@VTECAcademy]

we are assembling an engine now with the RDX head and turbo.

[@TheCordrick]

🇯🇲🇯🇲🇯🇲🇯🇲

[@wocctechphone9684]

The k24a4 and k20a3 and k20a2 use same main bearings only difference was type lead and non lead based so should be fine Wonder if timing cover fits the r40 k24z blocks think as long as it uses the r40 TCT it may be missing link to add crank position sensor to a single port exhaust k24z

[@miguelangelalmonte2263]

Can you do comparison between k20c1 vs k20c2 see if anything is interchangeable

[@VTECAcademy]

I don't have a C2 engine. Not sure when I might. There probably isn't much that is interchangeable though. The C1 is really beefy compared to the C2.

[@miguelangelalmonte2263]

@@VTECAcademy I have a couple that I bought in auction for $75. Can't afford a car but if I can do a Frankenstein engine that would be cool.

[@miguelangelalmonte2263]

C2* not a couple

[@miguelangelalmonte2263]

And c1* not car damn auto correct

[@VTECAcademy]

@@miguelangelalmonte2263 You bought a K20C1 for $75? That's worth some $$$. Unfortunately, the parts are only good on the C1 or C4.

[@diegocervantes7946]

oil pump looks similar to the k24a2

[@TBills3000]

I literally just got an RDX a few days ago. Great daily driver. Y’all in the comments are really hating on the k23 sheesh man😕

[@VTECAcademy]

The engine is great, but not for engine swaps. The reason is no manual transmission options.

[@lcq4blackstar]

Same here, just picked up a MINT pearl white 08 a week ago for the family hauler and it is wonderful! I watched these tech inspection videos when they dropped, I would think keeping the k23 in the RDX best bang for buck would be the k24 9th gen civic head with its cast in exhaust manifold to a bigger turbo but here Brian is taking the RDX head/turbo setup and putting it onto the K24 block (for a budget turbo setup). Engine management may be the issue with the K24 head though? Maybe Brian knows if flashpro could still handle that combination? TBH for what I want the car to do it is absolutely enough power/torque. I've been running "torque app" on android to scan the OBDII and I saw a peak of 15.5PSI which I read it should peak at 13.5PSI stock. This thing is bone stock and serviced only by Acura so I'm 99.9% sure it isn't running a hondata reflash... Thoughts anyone?

[@TBills3000]

@@lcq4blackstar nice! I have a 2012 pearl white

[@VTECAcademy]

@@lcq4blackstar for my purposes I can use a Hondata KPro or KTuner to control the turbo like you would if you were controlling nitrous. The variable turbo system is basically an on/off system that restricts the turbo inlet size at low rpm to increase exhaust gas velocity and then opens at higher rpm when that would restrict flow.

[@texnomex1245]

My wife loves her 2008 RDX. Where can I source an engine as nice as the one you have there for a fair price?

[@paulrobinson3528]

So Mr Vtec, i have a 1998 mk1 Cr-v with a 2.0ltr 150hp engine, whats the ultimate engine and box you would fit?I want it to be a sleeper style car.

[@adieselcotton]

K24a 2007 or 2008, rsx type s 2002-2006 or civic si 2006-2011 6speed trans.

[@paulrobinson3528]

@@adieselcotton RSX?? whats that? i'm taking ultimate power output. I'm from the UK and Honda do not take us seriously, pity "sigh"

[@BrianGillespie_brianathasport]

@@paulrobinson3528 J swap it.

[@adieselcotton]

@@paulrobinson3528 integra

[@secso93]

The EUDM K24A3 engine uses the same conrodbolt head design.

[@crannyscustoms]

Sorry Brian I hate it also but Honda also isn’t what it used to be

[@elmayimbe_the_amateur_mechanic]

With this block, do you think the K20 turbo Accord 10AT would work with an adaptor plate?

[@VTECAcademy]

With enough money, yes. But that transmission is pretty big. Not sure what yo would put it in.

[@nickwells20]

K23 has forged crank and rods with aluminum pistons. I think it's worth the manual swap

[@VTECAcademy]

You’d need an adapter plate, making a wide engine package even wider.

[@paulrobinson3528]

1st in UK lol

[@midniter2001]

Are the k23 pistons cast or forged?

[@240trooper]

Have you tested a k20/k24 head on the k23 block for the RDX owners?

[@101raymond101]

its been done k20 with traditional vtec as well as k24 head has been swapped. search the rdx forums on acurazine

[@pikachuflys321]

Okey why is there a f20/f22c piston on a k24 rod ? I want to know lol

[@BrianGillespie_brianathasport]

We were racing in a class that allowed us to modify the engines as long as we used Honda Parts. Nasa Honda Challenge HC1 class in 2007. We won the championship that year and then they changed the rules.

[@carlossince92]

We need some updates on the builds!!!!

[@jeffryhino8275]

Did you ever find a transmission that would fit?

[@VTECAcademy]

No, just the RDX transmission.

[@beaches2mountains230]

Are You adding any ring gap??

[@MrChronic206]

Gap the rings and send it!

[@ronnieyoung8549]

Need to see capability

[@petoneves]

so the k23 is amazing stock engine 🤯

[@VTECAcademy]

I’m not sure I go that far. But it is a Honda, and they are all pretty good.

[@eddygarcia5953]

Is there any oem piston that is swappable with the k23 one

[@VTECAcademy]

It is the same bore size as the K20s. So any K20 piston will work.

[@eddygarcia5953]

@@VTECAcademy so k20a2 would work?

[@abaracskai]

K23 would be cool in a RWD set up, no?

[@VTECAcademy]

There's a idea. You could run the engine with a K-Pro

[@abaracskai]

@@VTECAcademy this in a Miata with either a CD009 or a BMW DCT.

[@86BmoreRaven]

How many miles on the engine? I might buy it :)

[@86BmoreRaven]

Going to slap a 3076 turbo on there.

[@BrianGillespie_brianathasport]

Zero miles, dyno time only and not for sale.

[@racer30ryan]

Did you guys figure out what flywheel will fit?

[@VTECAcademy]

No we did not.

[@racer30ryan]

@@VTECAcademy I know there is no manual transmission that will bolt up, but I need to know if a basic Honda flywheel will?? Planning a jet boat build. Any ideas? Btw, great tear down video!

[@VTECAcademy]

@@racer30ryan The K-series flywheel should bolt up, but may be too small for the starter to reach. Then you would probably use the J-series one. Both have the bolt patern.

[@richardwilliams9181]

Most of the size of the oil pump is also attributed to the integrated balance shafts. Which is there to further reduce engine harmonics

[@VTECAcademy]

Yes, but it is also a lot taller. The RDX oil pan is similar in depth to the 06-11 Civic Si and Type R.

[@richardwilliams9181]

@@VTECAcademy I see I see. Was there ever a conclusion to see if it was a similar design oil pump as the k-series pump that was up on that top shelf?

[@VTECAcademy]

@@richardwilliams9181 It's not the same as the earlier ones. K20A/Z or K24A. It may be similar to the K24Z but it is taller than those.

[@richardwilliams9181]

@@VTECAcademy What's the difference in the height, and are they interchangeable? I don't remember if it was covered in this video

[@VTECAcademy]

@@richardwilliams9181 Are you looking to change oil pumps on an RDX?

[@TheShangralaaaa17]

The k23 has always sucked. Best left in the rdx in a junkyard

[@knix2for5]

some good parts on them though

[@Korean_Jesus]

Same with k series trans, best left in the junkyard 🤣