PDA

View Full Version : K24a4 Swap (accord) - Whats Needed



SinisterCivicSi
04-26-2008, 08:32 PM
There isnt much info out for this swap since its not a popular choice to swap. i recently put this motor in my car and am VERY happy with the results. not only did i choose this motor for its fuel economy, i also chose it for the price - you can pick one up usually for under 800 bucks!

K24a4 Specs:

- 2,354 cc 2.4 liters in-line 4 front engine
- 87 mm bore, 99 mm stroke
- 9.7 compression ratio, double overhead cam, variable valve timing
- Unleaded fuel 87
- Fuel economy: EPA highway - 34mpg -- EPA city - 24mpg
- Multi-point injection fuel system
- Power: 119 kW , 160 HP SAE @ 5,500 rpm; 161 ft lb, 218 Nm @ 4,500 rpm


here is some info that will help others that want to do this swap, but had a hard time finding the info as i did.

Parts To Order:

CR-V Side Motor Mount - 11910-PPA-000 (Part #1) (https://www.hondapartsdeals.com/honda_parts_enlarged_image.php?hp_component_image= 14S9A0.022.9.gif&title=Enlarged Image Part for: ENGINE MOUNTING BRACKET from CR-V 04 5DR LX 2WD 4AT KA)

EGR Port Plate - 18711-PM1-J00 (http://www.hondaautomotiveparts.com/auto/jsp/mws/srchrslts.jsp?search=sku&catcgry1=&inputstate=&srchwords=18711-pm1-j00&vinnosrch=Enter+VIN+Number+---)

EGR Gasket - 18715-PB2-000 (http://www.hondaautomotiveparts.com/auto/jsp/mws/srchrslts.jsp?search=sku&catcgry1=&inputstate=&srchwords=18715-PB2-000&vinnosrch=Enter+VIN+Number+---)

EGR bolts (2) - 95701-08025-08 (http://www.hondaautomotiveparts.com/auto/jsp/mws/srchrslts.jsp?search=sku&catcgry1=&inputstate=&srchwords=95701-08025-08&vinnosrch=Enter+VIN+Number+---)

Thermostat Coolant Line O-Ring - 91315-PNA-003 (http://www.hondaautomotiveparts.com/auto/jsp/mws/srchrslts.jsp?search=sku&catcgry1=&inputstate=&srchwords=91315-PNA-003&vinnosrch=Enter+VIN+Number+---)


Parts Needed from your A3:

Coolant Housing
Thermostat
Water Pump
Coolant Lines
Serpintine Belt
Altenator
Mounts (all except what the CRV replaces)
Wire Harness
2002 ep3 oem front sway (03-05 wont fit) OR 02-04 civic ex front sway (both fit)


Additional Parts:

DC5 (type s) header (ep3 rh wont fit for some reason)
Type S midpipe (unless you have your ep3 one cut to fit)
Kpro


i will update this thread with more info if i get it, since the old thread was typed right after the swap, i might have forgotten a few things in this one. hope this helps out!

Windchaser
04-26-2008, 09:15 PM
Non-popular? I think the K24A1 and K24A4 are the 2 most commonly swapped engines, only because you can get a short-block for as low and $300; re-sleeve the bitch (depending on how bad the walls are), swap out for TSX parts and call it a day =)

SinisterCivicSi
04-26-2008, 09:24 PM
thats why i picked one up... because it was so inexpensive! i have been asked why i went this route with the motor because of the "no vtec" but i dont really care, she's cammed. :mangel:

grindin gears
05-28-2008, 08:47 PM
thanx 4 the info. did you have a clip on the right side of the motor not go anywhere cuz there is a cylindrical object with a female end for a sensor but my wiring harness doesnt have the clip. and i have that part that bolts to the motor from the crv but the part that connects that to the bracket on the body wont fit its like the holes arent far enough apart?? and did u change the upper radiator hpse b/c b4 it went into the motor from underneath but now the black male end point up not down so i did some modding.

JP_909
05-29-2008, 07:49 AM
Your a3 mid pipe should fit. I ran my mid pipe from my a3 for six months and had no problems. Good info btw.

SinisterCivicSi
05-29-2008, 01:23 PM
thanx 4 the info. did you have a clip on the right side of the motor not go anywhere cuz there is a cylindrical object with a female end for a sensor but my wiring harness doesnt have the clip. and i have that part that bolts to the motor from the crv but the part that connects that to the bracket on the body wont fit its like the holes arent far enough apart?? and did u change the upper radiator hpse b/c b4 it went into the motor from underneath but now the black male end point up not down so i did some modding.

are you referring to the egr port? looks like a coffee grinder? i call it my expresso machine. yeah you have to remove that stuff and the links for the parts you need are in post #1. they are very inexpensive.

as for the side motor mount bracket, make sure you have the right one. honda sent me the wrong one the first time and it didnt fit either. check the link i posted in #1 and you will see the picture of the mount you need. if you have the top motor mount - its the wrong one. you can use your ep top mount... you just need the crv SIDE mount. :mwink:

i didnt change any radiator hoses, i used all the ep coolant housings, parts and lines. you cannot use the a4 tstat, water pump or the coolant lines...they wont bolt up... trust me we tried. :mangel:



Your a3 mid pipe should fit. I ran my mid pipe from my a3 for six months and had no problems. Good info btw.


now this is the tricky part.... because the motor sits taller, some applications wont fit - they will hit your swaybar. HOWEVER... we kinda found out by accident that the 2002 front oem sway is the ONLY oem sway for the ep that will clear a type s race header for this swap. others were buying a civic ex oem sway and if you get the 02 ep sway, that should fit with no issues.

now as for the midpipe, the ep and dc5 should be very similiar if not identical in the bends (not the diameter, the dc5 is bigger). i used a type s midpipe w/ the type s race header so i didnt have to worry about an ep midpipe. the only ep part i used in the exhaust was the oem axleback - until i had my hks cut to fit the race header.

JP_909
05-29-2008, 03:05 PM
Yeah my civic is an 02.

04cvcsi
05-30-2008, 07:44 AM
can you run a k24a4 on a stock ecu w/ upgraded fuel injectors (310cc)?

SinisterCivicSi
05-30-2008, 08:28 AM
can you run a k24a4 on a stock ecu w/ upgraded fuel injectors (310cc)?

the a4 comes with the same ones as the ep (270s??) so you can run the a4 on a a3 ecu but the compression ratio is very slightly different... since the ep is 9.8:1 and the a4 is 9.7:1 there might be some a/f ratio issues, but i am not 100% on that.

doug/mel/joe or any other swap guru... you guys wanna chime in on this one?

talonXracer
05-30-2008, 08:36 AM
I am not sure on this, they have the same camshafts as the A1, but alot different pistons and head design. I do know the K24A1 can use the RSX injectors and a EP3 ECU as long as it has minimal bolt-ons, as the K24's respond exceptionally well to bolt-ons.

SinisterCivicSi
05-30-2008, 08:41 AM
yes they do! i cant wait to get a dyno.

and as for the a3 and a4 head design, i heard they were very similiar... its the a1 and a2's that are very different. we were going to use my a3 head until we confirmed the a4 was ok. once we found out it was good, i opted for the head with less miles, which was the a4. 40K > 110K :msmile:

but doug is the expert over me by leaps and bounds, i would go with his suggestions over my own. lol

04cvcsi
05-30-2008, 08:58 AM
i just want my car to run reliable w/ some moderate bolt-ons (cai/rh/e/stg 1 cams)

my "theoretical" solution to running lean is to use a vafc II to NOT change the vtec crossover point but to add some more fuel to the mix (atop of upgraded injectors). i heard the vafc II is made to adjust well w/ the i-vtec systems. i'm not ready to drop 1k on kpro...

i have an a3 right now but i'm just curious to see if it's feasible with the a1/a4

ALL MotoR Ep3
05-30-2008, 09:01 AM
I luv k24's they run good and strong......they make your ep3 move just like how you want it to move...definitely worth the money...:thumb:

davisj3537
05-30-2008, 09:02 AM
i just want my car to run reliable w/ some moderate bolt-ons (cai/rh/e/stg 1 cams)

my "theoretical" solution to running lean is to use a vafc II to NOT change the vtec crossover point but to add some more fuel to the mix (atop of upgraded injectors). i heard the vafc II is made to adjust well w/ the i-vtec systems. i'm not ready to drop 1k on kpro...

i have an a3 right now but i'm just curious to see if it's feasible with the a1/a4

Yeah the k24a4 should respond well with the 310 injectors and stock a3 ecu, BUT from what I have seen almost any bolt ons is gonna run lean. I have not worked with a VAFC but we can give it a shot. We need something to add fuel if you are dropping in the bolt ons and especially cams.

talonXracer
05-30-2008, 09:08 AM
I have heard of some issues with the vafc and compatibility with the K-series ECU's.

It may work ok for small changes, but I wouldnt rely on it to keep a engine healthy.

davisj3537
05-30-2008, 09:19 AM
^ I second that...you really should get kpro.

JDM-ELY
09-07-2008, 08:04 PM
Boosting the k24a4 will be a good idea?should i change 2 the k20a3 head?......do i really need the hasport gasket? Thanks

SPECIAL K20A
09-08-2008, 05:17 PM
well i just blew my motor just wanted to know if the k24 of the elemnet work in my ep i have a reflash i found one with 53000 miles on it for 300 bucks will my manifold bolt up

SinisterCivicSi
09-08-2008, 05:33 PM
OMG 300 is a steal for any running K24! dude THMotorsports has a kpro ready to go, just have to ship it... so there is no wait... if you need tuning options asap.

i dont know anything about the reflash so i cant speak on it. i am very limited on kpro, just enough to load basic kals, and datalog.

manifold will fit if you tap the head for the coolant source. if not, get the rbc IM and that has the hookup built in. you will also need the a4 manifold gasket (to cover the built in line).

read the stickys in this section, they are super helpful.

SPECIAL K20A
09-08-2008, 05:44 PM
would i feel a big difference between both motors now anothing my a3 i was pulling it too 8000 rps will the k24 take that abuse or whats the highest i can pull it

SinisterCivicSi
09-08-2008, 05:46 PM
my a4 is at 7200 rpms. you can take a2's higher. not sure about the a1's

SPECIAL K20A
09-08-2008, 05:49 PM
well i need to pick it up already its at my friends house but just not convice i dont really feels like spending on kpro well i got to pay 435 because i have reflash but i dont really have cash right now for that ill be more happy if i knew i can use my a3 ecu

mondos
03-20-2010, 03:41 PM
Whats a solid build on this motor. Kpro is a must. What about internals?

K20wagon
03-20-2010, 07:19 PM
Which would be better to swap the k24a1 or the k24a4, I know where I can get these motors and cheap to. Just trying to do some research before I get it and swap it in.

dirtyMETHOD
03-20-2010, 07:38 PM
i want a swap

jh604
05-05-2010, 11:05 AM
Which would be better to swap the k24a1 or the k24a4, I know where I can get these motors and cheap to. Just trying to do some research before I get it and swap it in.

x2 i can get some swaps for pretty cheap. pros and cons for all the k24's?

AUTiger
05-05-2010, 04:18 PM
Personally I think it goes k24a2>k24a1>k24a4. Reason being, the k24a2 already has a vtec head, then the k24a1 is ready for an a2 head with no need to swap anything else, then finally the k24a4 because in order to add a vtec head you need to swap the pistons and ideally the rods as well. It really just depends on your plans.

jh604
05-05-2010, 11:19 PM
Personally I think it goes k24a2>k24a1>k24a4. Reason being, the k24a2 already has a vtec head, then the k24a1 is ready for an a2 head with no need to swap anything else, then finally the k24a4 because in order to add a vtec head you need to swap the pistons and ideally the rods as well. It really just depends on your plans.

1800cad k24a2 with 30k kms on the clock. good deal?

AUTiger
05-06-2010, 10:59 AM
what's that in us dollars? If it's sub 2 grand then most definitely.

Average prices for a k24a2 is 1800-2200 depending on miles, k24a1 900-1100, k24a4-800-900. None of these prices include shipping though.

SinisterCivicSi
05-06-2010, 01:27 PM
Personally I think it goes k24a2>k24a1>k24a4. Reason being, the k24a2 already has a vtec head, then the k24a1 is ready for an a2 head with no need to swap anything else, then finally the k24a4 because in order to add a vtec head you need to swap the pistons and ideally the rods as well. It really just depends on your plans.

yes, depends on your plans and your budget. doing a swap is more than just throwing down cash for a motor... you have to figure out where you want to be with it, what parets are needed, possible necessary repair/replacements and having some extra money for the "woopies" that WILL come up. . . trust me i know about that. lol



what's that in us dollars? If it's sub 2 grand then most definitely.

Average prices for a k24a2 is 1800-2200 depending on miles, k24a1 900-1100, k24a4-800-900. None of these prices include shipping though.

i have started seeing k24a2's going for as low as $1500 as well... but i am sure it depends on mileage and where you get it. i got my a4 3 years ago with 45K on the clock and i paid $600 for it. i got it for a steal.

K20wagon
05-06-2010, 02:24 PM
I wish those prices was with shipping lol.

jh604
05-06-2010, 04:51 PM
what's that in us dollars? If it's sub 2 grand then most definitely.

Average prices for a k24a2 is 1800-2200 depending on miles, k24a1 900-1100, k24a4-800-900. None of these prices include shipping though.

Canadian prices. Also a k24a1 for 1100 with about 30k kms too. these all all local prices for me

goldEp
05-15-2010, 12:39 PM
sinisterCivic..thank for the nice write up.. im geting ready to do this swap.. i got the motor for a straight trade for my k20a3..so im swaping the a4 for now so i can have a car in the mean while im building a1 bottom with rsxS z1 head.. my question is what do i use on my kpro there is an option k24accord with intake exhaust and headers..is this the option i want to run???

and should i run the 270 or the 310 injectors..?

SinisterCivicSi
05-17-2010, 12:30 PM
sinisterCivic..thank for the nice write up.. im geting ready to do this swap.. i got the motor for a straight trade for my k20a3..so im swaping the a4 for now so i can have a car in the mean while im building a1 bottom with rsxS z1 head.. my question is what do i use on my kpro there is an option k24accord with intake exhaust and headers..is this the option i want to run???

and should i run the 270 or the 310 injectors..?

thanks! the origional had alot more detail but this has most of it in there. there is a map for the k24a4. i cannot recall right now if they have one for exhaust and header but i HIGHLY suggest you upgrade to the 310 cc injectors. if your running rich you can always trim the fuel back in kpro. i used my 270cc oem injectors and i burned them up from maxing them out. granted i have stage 2 cams with boltons but you would rather have injectors that you know can handle the load, than burn yours up like me and risk fucking something up. if you plan on modding more then 310's are the way to go.

i cannot stress enough to DATALOG as soon as you get the motor running. find out what your air/fuel is and tweek it if necessary...check for knocks too.. running lean is a bad thing.... trust me on that one.

tjs03si
05-23-2010, 07:50 PM
anybody have any pics of there swaps in the car nd pics of the motor ?

SinisterCivicSi
05-24-2010, 09:40 AM
wow i need to update my members ride thread! i had more pics, this one is old...

http://i13.photobucket.com/albums/a288/SinisterCivicSi/evensin/ep9085.jpg

tjs03si
05-30-2010, 08:35 PM
how did you mount the metal coolant line from the thermostat from the a3 on to the a4 it has different mounting points nd bend?

Esras02si
05-31-2010, 05:02 PM
Wondering if the ep3 torque damper will work with the swap?

SinisterCivicSi
06-01-2010, 07:50 AM
how did you mount the metal coolant line from the thermostat from the a3 on to the a4 it has different mounting points nd bend?

i used the a4 line. :mwink:




Wondering if the ep3 torque damper will work with the swap?

NO. i had one and it specifically stated on the ingalls site to NOT use it on swapped ep's. not sure if they have one designed for k24 swapped ep's... but i am assuming its because the motor sits higher and changes the forces? :shrug:

jsonxyz
08-15-2010, 12:29 PM
Looking for info im a noob to Kmotors i have 05 ep3 kpro,jrsc dc header ,440inj ,kpro.that motor is screwd,im looking to buy a k24a4 for $800 wondering what i need to put the a4 into my ep3 ,,,and would the jrsc work????? any help would be great.

jsonxyz
08-15-2010, 12:40 PM
Looking for info im a noob to Kmotors i have 05 ep3 kpro,jrsc dc header ,440inj ,kpro.that motor is screwd,im looking to buy a k24a4 for $800 wondering what i need to put the a4 into my ep3 ,,,and would the jrsc work????? any help would be great.

EPSU3
08-15-2010, 01:31 PM
Looking for info im a noob to Kmotors i have 05 ep3 kpro,jrsc dc header ,440inj ,kpro.that motor is screwd,im looking to buy a k24a4 for $800 wondering what i need to put the a4 into my ep3 ,,,and would the jrsc work????? any help would be great.

Since you already have Kpro and injectors all you would need would be a CRV passenger mount, and maybe a new header to clear your front sway.

jsonxyz
08-19-2010, 06:16 PM
thanks ,would the jrsc bolt up to the A4 head probaly wont do it just wondering

AUTiger
08-19-2010, 09:04 PM
yes, but you would need to drill and tap the head like you would for a prb or prc intake manifold or run the adapter plate

jsonxyz
09-01-2010, 06:00 PM
ok i have the a4 and wondering do ineed to use the a3 intk man or use the one off the a4

ep3jd
09-02-2010, 04:04 PM
what is this swap said to produce with full bolt ons and a tune? i just found one for cheap and although i was going to go with k24a1/k20a2 i think that i could also make good power with this. allegedly his friend has a straight k24a4 in his ep3 and makes 218whp and 178 wtq with a dc header, 3" exhaust and kpro...

jsonxyz
10-11-2010, 10:39 AM
ok i got the a4 in my hatch with no problems.There was no issues with sway bar or header so not sure if the hfp package maters with sway bar problems.The motor is running fine but my temp gage isnt reading ,,,,kpro is reading etc from 185-204 at its highest then fan kicks on.Wondering why the gage isnt reading in the car?????

SinisterCivicSi
10-12-2010, 09:13 AM
there is a patch for kpro to fix the temp issue. go to www.hondata.com to download it and update your software. are you running the latest version?

jsonxyz
10-13-2010, 10:41 AM
i updated a few weeks ago but i will check the site thow

RHCP0801
10-13-2010, 11:06 AM
its not a patch, you just have to into the misc tab and under multiplexer select normal operation than upload it....happened to me also and this fixed it

jsonxyz
10-13-2010, 05:52 PM
thanks so much that fixed it ,,i was about to start buying parts lol

SinisterCivicSi
10-14-2010, 04:50 AM
its not a patch, you just have to into the misc tab and under multiplexer select normal operation than upload it....happened to me also and this fixed it

technical... lol can you tell i am not a PC person? lol

20boostedep02
10-17-2010, 09:22 PM
Would this be a good motor for boost and has anyone done it?

rolldogK20
03-13-2011, 04:09 PM
yes, but you would need to drill and tap the head like you would for a prb or prc intake manifold or run the adapter plate

Where can i find a how to to drill and tap ???

Jonny
03-15-2011, 09:30 AM
Why the K24a4 and not the K24a2? Produces 200HP and 171 TQ stock.

Blue03Si
03-15-2011, 10:18 AM
Why the K24a4 and not the K24a2? Produces 200HP and 171 TQ stock.

k24A4 is about 900 bucks and you use your 5 speed transmission, k24A2 is about 2000 and you really need to run a 6 speed tranmission. You get about the same amount of torque out of both engines. You can always throw some of your old A3 bolt ons to the k24a4 and bump the power up quite a bit. k20a3 JRSC or k20a3 cams can be used with your k20a3 kpro..... so its a much cheaper option to boost your performance.

japarossa
03-15-2011, 11:32 AM
k24A4 is about 900 bucks and you use your 5 speed transmission, k24A2 is about 2000 and you really need to run a 6 speed tranmission. You get about the same amount of torque out of both engines. You can always throw some of your old A3 bolt ons to the k24a4 and bump the power up quite a bit. k20a3 JRSC or k20a3 cams can be used with your k20a3 kpro..... so its a much cheaper option to boost your performance.

$2000 is alot of money for a K24a2 they can be found for half of that and you don't need to use the 6 speed tansmission, the ep 5 speed will get you down the road just as good. The PNF kpro ecu can be used with any of these engine swaps.

Blue03Si
03-15-2011, 11:34 AM
$2000 is alot of money for a K24a2 they can be found for half of that and you don't need to use the 6 speed tansmission, the ep 5 speed will get you down the road just as good. The PNF kpro ecu can be used with any of these engine swaps.

The 5 speed will get you down the road, but will not make the best use out of the powerband.

japarossa
03-15-2011, 11:45 AM
The 5 speed will get you down the road, but will not make the best use out of the powerband.
Sure it will, most of the guys I know racing with a k24 setup are using the 5 speed by choice.

spartan
03-27-2011, 11:52 AM
I know this thread is for k24a4, but does this still apply with swapping in the k24a1?
I have DC5 ITR front sway, could i use ep OBX RH or dc shorty header (i have both) with ep exhaust?
Is k24a1 w/ k20a2 head the same as k24a1 w/ k20z1 head?
My buddy told me the k24a1 has one of the best heads Honda has ever made... really?
Found a k24a1 with 38k miles for $700 a couple hrs away.
LMK whats up!
Also i'm just gonna buy some aftermarket mounts anyways, do i still need that CRV one?

spartan
03-29-2011, 10:24 PM
wtf really!?
someone help!

jdmsijdm
08-26-2011, 10:47 PM
Just picked up a k24a4 last week, dropping it in my 05 si after the hurricane passes through. Not sure though, can i just use the k24a4 intake mani and tb? id like to not do the drill/tap procedure thats necessary if i want to retain my a3 intake manifold if i can help it. Also, will my existing a3 starter work? The k24a4 swap i picked up did not have a starter...

jdmsijdm
10-17-2011, 07:48 PM
got the swap in, but its running very rich. No CELs other than a flashing one during test drive. So rich that the cat is glowing orange. K24a4 with ep3 ecu, rsx-s 310cc injectors, k24a4 intake mani and tb, no bolt ons other than intake pipe/filter. Idle was a little rough, switched back to stock 270cc injectors and that smoothed out the idle some, but still running rich and bogging real bad under medium/heavy throttle. Any ideas as to why id be dumping fuel?

junevtec
10-17-2011, 08:36 PM
doesnt that glowing mean a clogged bad catalityc converter?

RHCP0801
10-17-2011, 09:00 PM
your cat can be clogged, did you put new spark plugs in? The most common reason would be a bad spark plug or bad coil pack. If the spark doesn't work, there is no combustion in that cylinder and the raw unburned fuel goes out the exhaust pipe.

Also are you running a basemap or someone elses tune? that could be the reason also

jdmsijdm
10-17-2011, 09:08 PM
plugs are brand new, coil pack was my exisiting ep3 coils that were good before swap as was my cat, and ecu is stock ep3 no hondata or any other tuning. I got another set of coils i can swap out tomorrow if we dont come up with anything else but we didnt think it was that because all 4 wouldnt go bad at the same time would they? Also, after switching back to thte stock 270cc injectors, the cat no longer glowed, but we were STILL dumping fuel, just not quite as much. Still bogs/stumbles the same way with either set of injectors.

RHCP0801
10-17-2011, 09:26 PM
I am going to say it has to be something with the computer because you are dumping fuel and the ecu is what tells the car how much fuel to give

jdmsijdm
10-18-2011, 01:17 AM
could a problem with the evap system possibly be telling the ecu to throw more fuel at the situation? After doing some reading and looking over a few service manuals im pretty sure i need to fix a couple things related to how i rigged up the evap solenoid sensor on the TB.

jdmsijdm
10-20-2011, 08:31 PM
turns out the map sensor was bad. pulled the a4 unit out, threw my old a3 one in, and it runs PERFECT.

StockTexasEP3
12-02-2011, 11:28 AM
turns out the map sensor was bad. pulled the a4 unit out, threw my old a3 one in, and it runs PERFECT.

How hard was the swap to perform?

Jukka
05-09-2012, 07:05 PM
searched for answers, but couldn't find one. If i sawp in a K24A4 into a 02 SI (weird smaller sway bar), could I use my OEM exhaust manifold? Or do I need to buy a header regardless?? I need a new motor and I'm on a budget so I don't want to have to buy a new header.

Jukka
05-12-2012, 09:20 AM
bump...i need to do something soon and im debating on if i wanna go with another A3 or a K24A4 and want to figure out what I will need for sure for the A4 swap. No one knows??

DARKKNIGHTHATCH
08-16-2012, 11:15 PM
WHat is the lower radiator hose for this swap??