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147 Posts
Discussion Starter #1
Hey everyone I'm just finishing up my k24a2 swap and really only went into this with a rough idea on what to spend but I'm going to show you exactly what it will cost to do this swap.

So from the start the swap is going to be different for a type s and 5 speed as the harnesses are different, so some of you may have to factor in the price of a type s harness and ecu for kpro, and I did constant research and browsed for good deals on parts.

Here is what I spent on all parts for the swap(Keep in mind prices are in CAD)

Necessary for swap

08 TSX k24a2 engine ($1450 tax in)
CRV Mount and gates hose ($80)
OEM Clutch, stupid not to replace at this point($200)
Resurface flywheel($100)
Kpro(already purchase but $1100)
Rbc Intake manifold ($250, Nessecary in 06-08 tsx motor if you want to keep IACV)
Ktuned RBC adapter ($80)
Oil, coolant and hoses, miscellaneous ($100)
Serpentine belt
Air intake( I already had an Injen CAI $300)
Many Different exhaust setups, being conservative and can get by with ($600)
Flywheel cover, which some k24's dont come with($50)
DynoTune(around $500 depending on tuner, etune availble from TKTuned for around $250 if i remember right)

Optional which I chose to go with
Exedy lightweight flywheel($250 more)
Competition stage 1.5 clutch ($300)

And what most would replace but I was skimping out as funds were running low
Motor Mounts($300)
K20a2 Oil pump from kmod($400)
All swapped sesnors(Knock, crank, and cam position sensors=$300)
Upgraded exhaust(3" catback with good rh, extra $400)

So basically you could do the swap for around $3500USD starting from nothing and spending as little on uneeded parts, would be cheaper if you went for the 04, 05 tsx because the motors are cheaper and could get by with the rbb, I believe my total bill with Everything from before and bought for the swap that is essential to the swap was right around $4000CAD. Was able to break even with all the parts from the swap by swapping my old motor into a car and sell that car which is an idea for some of you to, and I also have a spare k20a2 motor out of that car with low compression I may save for a turbo build or could sell down the road I haven't decided yet.

I hope some of you find this useful with updated prices and options, haven't had a chance to drive the car but holy its exciting!!! Good luck everyone!!
 

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Dead again.
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2,672 Posts
This is something that I really wanted to hear.

You kept the existing transmission correct? I have a Base RSX, and I wanted to go to a six speed, do all K transmissions bolt up to all engines?

Where did you get your engine? Ebay or is there a better place for that? How can you be certain about the mileage on the used engine you buy? How many were on yours?

Any plans to build it up? Sounds like having a new engine out of the car is the perfect time to give it a few internal upgrades.
 

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1 of few active members..
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147 Posts
Discussion Starter #3
From what I've heard all of the rsx transmissions would bolt up, can't see why not the 5speed bolts up to k20a2 fine so why wouldn't it work vice versa with k24a2?? And I got my motor from a salvage yard, went over saw the car turned key read odometer and looked at vins and they all matched up, got compression tested before I bought it to. I guess thats all i can tell as I didn't see the car running but I doubt they'd go through that trouble.

The k24a2 i bought had 96,000 kms on it when I picked it up or so all the evidence says. I literally called around for 3 hours and browsed local buy and sell sites constantly till I felt confident, as I suggest is a very good idea for anyone to do. As far as the k20a2 that has low compression, I have a k24a4 that I was originally goona frank before so it would seem like a stupid idea not to seeing as I have a k24a4 bottom and a type s head that are just calling to be paired but im not sure.

Will see how I like the k24a2 and go from there
 

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Bone stock, eh
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171 Posts
Nice swap! I've been thinking about having a K24A2 swapped into my 02 type S for about a year now, so I'm really interested in your impression of the swap after you've had a chance to drive the car for a while. I'll end up paying a bunch more than you though as I'm not going to do the work myself.

Rbc Intake manifold ($250, Nessecary in 06-08 tsx motor if you want to keep IACV)
Actually, you could use the 06-08 RBB intake manifold with the Karcepts RRC adapter and retain IACV: http://www.k20a.org/forum/showpost.php?p=2698986&postcount=214

Out of curiosity, how was the clearance with the K24 and RBC? Did you have to notch your hood and/or remove the hood prop support?
 

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1 of few active members..
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147 Posts
Discussion Starter #5 (Edited)
Nice swap! I've been thinking about having a K24A2 swapped into my 02 type S for about a year now, so I'm really interested in your impression of the swap after you've had a chance to drive the car for a while. I'll end up paying a bunch more than you though as I'm not going to do the work myself.


Actually, you could use the 06-08 RBB intake manifold with the Karcepts RRC adapter and retain IACV: http://www.k20a.org/forum/showpost.php?p=2698986&postcount=214

Out of curiosity, how was the clearance with the K24 and RBC? Did you have to notch your hood and/or remove the hood prop support?
I was kinda forced to do it myself in order to make it financially doable. Ill be sure to keep you updated plan is for it to be put on the dyno the end of this week or first of next week to see what it does. Seeing that makes me so frustrated, I searched around for hours but it looked like it was either rbc or rbb with no iacv, guess I shouldve looked harder:rest .I'll be sure to let you know on the rbc as soon as I get the manifold on, currently the last part im awaiting on the build car is looking awful sad sitting there collecting dust :run:
 

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ive got about 500 miles now on my k24a2 swapped 03 base. its not a high revving monster but it sneaks up on you quickly how fast you are going.

few things i learned:

this chassis is such a pain in the ass to work on compared to integras, and all civics from 88-00. i feel like eevery damn thing you have to take off has at least one bolt that has something in the way.

the base 5spd will bolt to the block. they dont really make clutches for the base flywheel, so you need a type s flywheel for the bolt and dowel pin pattern to match. the flywheel will bolt to the crank no probs. i went with the comp stage 2 so far so good pedal is not stiff at all.

too many people imo are quick to swap out the rbb intake mani. the motor is a lower to mid range motor id soo much rather have an extra 20 ftlbs at 4000 rpm than 10-20 hp at 7000 rpm. if you keep the rbb you need an 03-05 accord tb before they went drive by wire. a type s will fit with the adapter plate. the base tb wont fit unless you redrill the new bolt pattern in the manifold. you will likely loose cruise control since the cable wont mount to the tb properly. supposedly you can use another throttle cable i just havent had time to try it.

before you guys swap in the new motor, its a great time to replace timing chain, tensioner, lash the valves etc. just make sure you have a full tube of rtv silicone for reassembly lol. ps when you pull the crank pulley you loose the seal on the front mainseal so order some extras.

the stock kpro calibration runs afr in the low to mid 12s once you go open loop.
ive slowly been working on the tune, locking one cam angle at a time. even with some runs up into vtec and a lot of idling, i see 25-27mpg non highway

overall i think it also cost me somewhere in the mid 3000 range for the swap stuff itself, but i also replaced the shocks, brakes, balljoints and wheel bearings etc while it was all apart. combined with 3000 for the car itself its around 7500 total for a car that would probably sell for 4500 lol. you dont do this to get rich i guess
 

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Good info man. Brandon13buckley, I have basically the same setup as you. What are your opinions on the k24a2 compare to the k20(z1 or a2) (which ever you had before). I feel like it was worth. Also please post after you have gotten your tune dude. I am in the same situation as you. All I need is a tune(been driving on k24a2 basemap for almost half a year)(no problems). But is the tune worth the $? You gotta let us know if you feel the difference before/after the tune.


My mods:
- 08 tsx k24a2
- Injen SRI intake
- Ktuned header
- k20z1 trans
- RBC Manifold
- Type S Trottle body
 

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VTEC Connoisseur
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235 Posts
Good info man. Brandon13buckley, I have basically the same setup as you. What are your opinions on the k24a2 compare to the k20(z1 or a2) (which ever you had before). I feel like it was worth. Also please post after you have gotten your tune dude. I am in the same situation as you. All I need is a tune(been driving on k24a2 basemap for almost half a year)(no problems). But is the tune worth the $? You gotta let us know if you feel the difference before/after the tune.


My mods:
- 08 tsx k24a2
- Injen SRI intake
- Ktuned header
- k20z1 trans
- RBC Manifold
- Type S Trottle body
I'm in the exact same boat. Been on a base map for about 8 months. Is it worth the tune? Or should I just wait even longer because eventually I'm going to swap my k20z1 head on with cams
 

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Enishi26. Same here man. I have my k20z1 head just waiting to be put on. I might just get a extra k24a2 bottom and build a frank k20/24 on the side. And swap out my full k24a2 and put in the Frank k20/24 once I have everything ready.
 

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147 Posts
Discussion Starter #13
Hey guys sorry been busy with mid-terms, Im still running on the 04-05 base map, waiting for this summer when I get my 3" cat back:rolleyes: I can honestly say I don't feel the extra horsepower, but I can feel the torque all day long, the motor just pulls as soon as you step on the gas pedal. I will keep you all updated on when I get the tune and how much it helps! Good to see this is helping everyone out:fistbump:
 

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As soon as i get some pictures, i'll be posting parts for sale for a frank. Traded the RSX for a S2k. I have the following available, all new still in boxes.

08 TSX block and crank just back from machine shop
Carrillo pro a rods
cp 12.5:1 pistons
prb 4 piston pro 163 head
water pump
oil pump
timing chain
timing chain tensioner
chain guides
head gasket
id 1000 cc injectors
arp studs for head

parting it all out pm me if interested in parts.
 

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1,237 Posts
With that mileage and price could of just bought k24a4 swapped parts from your old motor. All good bolts do need to be torqued to spec
 

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Always on TDY...
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Thanks for this as I plan my cars future. Given I could add a pile of HP with a supercharger or ?, would that be easier, and or less reliable?
Just as reliable with a S/C. Been running a stock 06 k24a2 + JRSC for a few years now with no complaints. Definitely prefer the k24 over the k20 for the midrange power.

Also, for​ those considering a tune, it is definitely worth it even NA. What I would highly recommend is that you get all your mods on first and then pay for a tune. If you add a mod, tune, then add another mod and tune again, this is where paying for multiple tunes become a waste.
 

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Jimbo's Cowering Employee
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4,131 Posts
What transmission are you guys using? I am going to buy a tsx to daily for a few months and eventually swap to the RSX. Not sure if I should buy one with 6 speed or an 09 auto and swap tranny from my rsx.
 

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^ RSX transmission for sure. That'll make the install much simpler. I wouldn't be able to promise the same if you try it with a TSX transmission. Whether the K24 comes from an auto or manual does not matter (though from an auto you will also need to get a pilot bearing when you do the swap into the RSX if the RSX has a manual)



By the way, I've had an 08 K24A2 in my RSX since 2011 and it's honestly been the best mod I've done. I did purchase one with 47k miles back then from LKQ and it came from an automatic. So I had to spend a few more days waiting for a pilot bearing to come into my nearest dealership to continue the install as a consequence of it. Installed in the driveway with an engine hoist and hand tools
 

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Jimbo's Cowering Employee
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Awesome thanks. I'm excited because not only do I get a better starting power platform in my RSX, but I will be taking the K20 from the RSX and putting it in my classic 1980 Mini. It will be a long road before all that is done, but it will be amazing.
 

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What transmission are you guys using? I am going to buy a tsx to daily for a few months and eventually swap to the RSX. Not sure if I should buy one with 6 speed or an 09 auto and swap tranny from my rsx.
An 09 swap will not be as easy as 04-08 because 09+ TSX motor has the oil filter placed in a different section so you will have to block and reroute. Plus no secondary vtec engagment and lower RPM range, means for same power at lower RPMs but not as fun to ring the engine out.
 
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