K24 RBC Intake Manifold Swap - How To Do It (& Everything You Need To Know) 

Thanks for checking it out. Feel free to reach out if you have any questions. There's plenty more Civic mods in the queue, so stay tuned!

howd it go im buying one soon

@@onlyunojhuno Everything is going great! My most recent video about the Rear Control arms has a quick running clip at the beginning that you can check out to hear how much air that thing pulls in even at idle. Feel free to reach out if you run into any issues and have fun out there!

Rudy, thanks for checking out the video and happy it helped out. Good catch, I forgot to mention, to block that off you can use vacuum port caps or reinforced polyurethane caps if you need it to withstand pressure from a boosted application.

No problem with hood clearance on my setup.

Thanks for the feedback and checking out the channel! I'm on KPro and didn't have to make any changes to the tune. I don't see any reason you'd need to swap ECU or get a tune just to run it since all the sensors swap over. It does open the door a little more when you do decide to get tuned, however. More content coming soon!

@@C4Race thank you!

I'm not as familiar with the z7 engine so sadly I can't really give you a good answer there. My application is for a K24A2. In my case, I can use a factory K24 gasket and retain the coolant passage. I think the difference comes in with a K20 head and an RBC since there isn't that passage. Again, not sure about the difference between an A2 and a Z7.

Thanks for the visit, there's plenty more coming soon!

@@C4Race you're welcome brother, that's why we're here to support you🤝🤝💯

It bolts right up. Since this is a swap for me I used that coolant port for my coolant temp sensor.

Do you kno if the a2 manifold fits an z3

It'll probably throw up a code. I could probably try it on mine for you and find out.

Not sure about the Z3, but I know that there are different coolant passages based on the head.

Should be fine. I used the same fuel rail on both the K24 and RBC manifolds.

I used the one from K-Tuned. I use a lot of their stuff. Very high quality k-tuned.3dcartstores.com/Thermal-Gasket-brIntake-Manifold_p_227.html

For now I'm using the stock K24 injectors. Once I get the engine build finished and turbo on, I'm going with some Bosch 2200s. If you want something with a little more juice for some NA power you can use Acura RDX injectors which have a higher flow rate, are super cheap, and you can pick them up at Honda. Part #: 16450-RWC-A01 for a set of 4. You'll need some jumpers or rewire them in. Lots of places sell them as a bundle.

Shouldn't have any issues. My motor is an RBB JDM K24A which is the same as a K24A2

It should since the K2x heads are very similar, but definitely do a little more research into your specific application before committing.

No modifications needed in the harness. I use the K-swap harness from Jack Spania Racing. Here's a link: jackspaniaracing.shop/products/k20-k24-k-series-tucked-engine-harness-for-honda-acura-1

@@C4Race awesome. Also another question. I just bought a k24a2 for my ek. It’s the usdm motor. Do i have to change the water pump housing or relocate any accessories or anything like that. I don’t plan on keeping ac or power steering.

Thats awesome! You won't need to change anything with the USDM engine. The water pump housing thing is only for JDM and only becomes an issue when you go to replace the pump itself.

I did. I just transferred the adapter plate over from the old manifold.

@@C4Race thanks for the reply!

Did u use the rbc adaptor

I'm currently using the stock K24 injectors with no spacers. They plugged right in.

@@C4Race sir thank u so much so do I just need the rbc manifold and the rbc adaptors or throttle body boss can u send me ur parts list on your a4

I bought it directly from KTuned: k-tuned.3dcartstores.com/

Previous owner did that. I had to look it up also. Evidently when you slam the car the upper control arms contact the shock tower so the super low static guys cut holes for clearance. I have some plates that I still need to weld on to fix that.

That's so rough lol. Nothing good comes from the stance scene 😂

I did actually, pretty straightforward. Let me know if you want any details. Thanks for checking out the channel!

I'm using a K24A2.

@@C4Race I have K24A3 so i was wondering to buy RBC but i was not sure if on the k24A3 will be bolton without modification. so a2 and a3 are basicly the same engine so i can mount the RBC without modifications.

Should be plug and play. Once I get the turbo on I'll be getting a tune on the KPro. For now it's just running a base NA map.

Yes I’m not going turbo or anything big it’s for my accord 2003 ex 2.4 ivtec just want a little more push on it

@@C4Race 0:32

@@franciscoesparza410 Honestly, I'd look at other mods before swapping the intake manifold if you're just looking for a little extra pep. The RBC may flow better and is great for boosted applications but because of the length of the runners compared to the factory K24 manifold you *might* gain some more horsepower (likely single digit if that) but will defintely lose some torque. What you will mostly feel driving around town and some light spirited driving, torque will be the bigger contributor. So in reality it might feel slower outside of track-day-like events. I'd recommend looking at intake, header, exhaust first then start stepping into the bigger mods.

And can you also run a rbc on stock ecu?

That is a MAP sensor, the one right next top the brake booster vaccuum line.

Sorry I meant of the sensor to bolted in at 11:03 beside the fuel rail

Gotcha, the vertical single wire sensor is a coolant temp sensor. That typically is an air bypass valve that is thermally actuated and runs from the intake tube to the manifold during cold starts then closes as the engine warms up. I removed that and placed a coolant temp sensor in its place. There's a few companies out there that make them.

Actually, you do need an adapter if you are using the K20 throttle body, I just transplanted the one I already had on the K24 manifold. Sorry for missing that.

@@C4Race hey there nice k20 inlet swap what's the name k24 inlet ? Call thanks 😎👍🏾

@@geo93_trelawney I used the Hybrid Racing RBC adapter. There's quite a few companies out there that make them but you can pick up the Hybrid Racing one one their site (or their ebay storefront) at the following link. Be sure to get new OEM throttle body gaskets to avoid vacuum leaks! you'll need 2, one for the adapter-to-manifold side and another for the throttle body-to-adapter. www.hybrid-racing.com/products/hybrid-racing-k20a-a2-a3-z1-throttle-body-to-rbc-rrb-rbb-intake-manifold-adapter-hyb-tba-01-64-c

Old post but thought I would share some knowledge. You can also use an accord throttle body without adapter. I'm still using the tsx manifold with my swap with an accord throttle body from the junkyard.

Thanks for the other option! Didn't know an Accord TB would work.

Thanks for the support!

There's a return line direct from the regulator. My FPR is remote mounted on the shock tower instead of directly on the fuel rail.