Honda K-Series ( K20, K24 )
Swap Guide
Part 1

Honda-k20-k24-engine-swap-guide-civic-integra-011

That B-series throttle cable is now obsolete so K-Tuned sells a convenient bolt-in throttle cable and bracket.

Honda-k20-k24-engine-swap-guide-civic-integra-012

The lower rad hose doesn’t always line up with the radiator so the K-Tuned Swivel Thermostat Housing is the perfect solution. It also has provisions to mount sensors in it.

Honda-k20-k24-engine-swap-guide-civic-integra-014

Half rad setups seem to be popular with the K-swap crowd but the best and ideal solution for anyone looking to abuse their K-engine is a full-size radiator. This Hybrid Racing rad has all the necessary ports for sensors and a slim profile fan which is needed since space it at a premium up front in the DC2 chassis.

Honda-k20-k24-engine-swap-guide-civic-integra-015

Another must have item is a fuel rail kit. The RSX has a return-less setup that is difficult to make work in the Integra but thankfully a complete kit makes easy work of what would otherwise be a complex job. I couldn’t find a complete kit on Hybrid’s site, only their fuel lines. However, K-tuned offers a great all-in-one package.

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Another small but critical item is the clutch line kit which will enable you to retain your stock clutch master cylinder and bolt straight up to the slave on the transmission.

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Hybrid Racing offers a great power steering kit that will allow you to retain use of your power steering (very worthwhile in my opinion) and as you can see it uses quite a few OEM parts.

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Finally, there’s the conversion wiring harness. Without this you’ll be going nowhere fast. Both Hybrid RacingK-Tuned and Hasport all offer excellent options.

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You’ll also need to send your RSX ECU out to Hondata to have it flashed and setup for tuning. This allows full control over critical parameters in the engine and will maximize your engine’s power potential after having it tuned.

KID-03

The alternative is a K-Tuned Immobilizer Bypass which is much more affordable than Hondata but you don’t have any tuning options so there is a tradeoff.

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That wraps up Part 1 of the K-Swap Guide but be sure to check out Part 2 of the K-Swap Guide as we prep and pull the Integra’s B18 motor and start installing the K20A.


Also make sure to check out our K-Swap video series that details installing a K20 into an EK Honda Civic.

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oxxy
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oxxy

Im swapping my civic ES with a K24. Mix it with a dc5 6speed gearbox and head. Juicing it with a hondata k pro v3. Now what happen is, my vtec wont engage since there is a trouble code for the vss. No CELs lighted up. How do i fix this ?

putera
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putera

no problem with the gearbox convertion..just go to your tuner and tuned back your hondata..will work 100%

otcelino
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otcelino

@oxxy is it fixed now? I also want to do this

Joe
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Joe

@oxxy I think what you need is a VSS converter.  K-Tuned sells one : http://k-tuned.3dcartstores.com/All-In-One-VSS-Converter_p_10.html

Nolan
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Nolan

Hey my name is nolan i am do a k 24a swap how much for the Hasport K-Series swap axles?? and Hasport mounts for eg civic ??

Ron
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Ron

I have a 99 Civic Si (Canadian version), a 5 speed mated to a D16 engine. I talk to a local Honda tuner in my area about engine swaps. I asked about about dropping a K24A2, but he said to go with a B18C because it’s a straight drop and everything will work 100%. I really want the K24A2 for the torque. My question is, if I do put a K24, will there be something (or a feature about my car) that won’t be working? I don’t understand what he meant by 100% if i go B18.

putera
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putera

yes, you may go for K24A..no problem on that..the step is same as swap the K20A..the meaning of “will work 100%” is there are easier to install the B18 because it was plug and play..no need to buy anything aftermarket item..just buy the B18 halfcut and you can take/use all the part including wiring and so on..

Steven
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Steven

anyone know what I could swap into a 2002 civic ex sedan automatic transmission?

Fabricio
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Fabricio

I’m swapping my civic eg3 with a k20, what I need to do, please help me, I;m from Brazil, thaankss

putera
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putera

actually for EG3 same as DC2.. so you may follow the step was given..

Anthony Rivera
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I have a 1983 Honda Civic and I want to make it B series there will be some support that can be added to the Civic

putera
Guest
putera

yes, go for B18C type R..i worth to use it..very2 recommended..power and tork comes together..but before you do this, please strenghteness your body and upgrade your braking system..;p

Anthony Rivera
Guest

I have a 1983 Honda Civic and I want to put a serial engine there will be some support which could put the bus without much invention

omgsaywahhh
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omgsaywahhh

If I have a fully functional RSX Base manual, would I need any additional parts outside the RSX for a K20A3 swap on my EG.

harrison
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harrison

hi my name is harrison
what should i do?????
i have a honda civic ep3 Premier Special Edition with a k20a/k24a2 swap in that ive done.
should i swape it in to a eg civc or keep it the same

sean
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sean

i have 91 crx hf im going to k24 swap

Zachary Wright
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Zachary Wright

I have a 93 civic hatch, just ordered a k24a that was pulled from a 2007 tsx. If anyone has any information or advice on the entire process and or links on needed parts please shoot your knowledge. Much appreciation

Zachary Wright
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Zachary Wright

I have a 93 civic hatch that i just ordered a k24a for. Any knowledge or links on parts on the entire process and the necessities would be beyond appreciated

Todd Case
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Todd Case

I have a 2003 ep3 i jus put a k20a in and im getting limp mode at 4k i used my stock ecu and wiring harness like i was told to by the shop i bought the motor from…im getting codes

P1106
P1259
P0325

I was told by a buddy today that i either have to have my ep3 ecu flashed by honda to run the k20a or buy a hondata ecu to run it…

Any advice would be greatly appreciated!

Thank you!

Filip Kawka
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Filip Kawka

Hi Peter.
I know it was some time ago but I find your website just today.
I own a standard 2002 3door 1.4 civic. Euro spec, if that makes any different.
My dream is to drop a K20 with separate throttle bodies 🙂
Do you think this could be a plug and play swap, if I have k20 engine with a box and complete wiring loom?
Cheers from Portugal
Filip Kawka

Hamlet
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Hamlet

I’m Swapping A K20A Into My 05 DC5 Type S It’s A Full Package Im Gonna Go Hasport Mounts Not Sure What Fuel Raul I’ll Get Around That Real Soon Lol And A Comp Stage 2 LightWeight Flywheel Clutch Anything Else You Think I Need Or Should Consider Before Starting ! Thx