Hybridracing - Answers

cooling: Cooling question with oem style K Swap

Mon, 30 Mar 2026 16:52:39 -0700

Hello, i'm swapping a k20a3 into a 99 ek hatch, i've got almost everything figured out minus cooling. I am running an oem ecu and wiring harness, i know the b/d coolant temp sensors are different from k coolant temp sensors. my question is what exactly should i run sensor wise? The hybrid racing K Swap sensor seems to be the answer but i'm unsure where to install since i don't want to delete my icav. Thank you very much. - Garrett

Engine: K series 74mm throttle body instructions

Sun, 22 Mar 2026 14:34:11 -0700

Hello, i have been looking for a k series 74mm throttle body with cruise control for my rsx for years. I have finally found one but cannot find instructions for installation to save my life. I have it 95% installed, but I'm having trouble hooking up the cables. Any chance you have an instruction manual for this?

Electronics: K20 ef conversionn harness

Sat, 28 Feb 2026 16:43:47 -0700

Any diagram on how to install conversion harness in 1991 crx si

Electronics: 2002 Accord K24 in a 1998 EK Chasis

Wed, 25 Feb 2026 08:41:12 -0700

Hi Hybrid Racing Team,

I’m planning a K-series swap into a 1998 Civic EK using a 2002 Honda Accord K24A automatic engine.

I have a few questions before I order parts:

Auto K24 Compatibility
- For an automatic-equipped 2002 Accord K24A (A4), do you recommend any specific changes or parts for manual swap compatibility (besides the transmission and mounts)?
- Are there known issues with using the auto motor harness or sensors on a manual swap?
Preconfigured Wiring Harness
- Do you offer a preconfigured plug-and-play wiring harness designed to work with an Accord K24A from an automatic car into a manual-swapped EK chassis?
- If not, can you recommend a harness option (Rywire, HR, or other) that integrates cleanly with your engine management solution?
ECU / Engine Management Recommendations
- Which ECU/harness combination do you recommend for the Accord K24 that’s easiest for a manual swap and future tuning (street/daily)?
- Is wiring for a Hondata KPro ECU supported/configurable through your wiring options?
Optional Sensors / Adapters
- Are there any sensors, actuators, or adapter harnesses needed (crank, cam, VSS, TPS, etc.) to make the auto K24 engine run correctly on a manual swap with your harness?
Support & Documentation
- Do you have wiring diagrams or pin-outs for your harness solutions specific to this swap scenario?

Thanks in advance,
Josh

Electronics: guide for universal kswap harness

Tue, 11 Nov 2025 10:06:38 -0700

where can I find a guide for you universal kswap harness? I just received mine and don't see a guide

Drivetrain: Detent Springs for a 16-21 work on a 24

Fri, 20 Jun 2025 19:27:52 -0700

So it’s not very clairvoyant on the fitment, will the ‘16-‘21 detent springs work in the ‘24 manual transmission

Electronics: Is the K pro V4 both PND and PRB?

Sat, 26 Apr 2025 06:57:58 -0700

I recently bought an ecu and I was wondering if it was the full 02-04 rsx type s prb version, or the pnd. Would love to have that clarified, thank you!

Drivetrain: 1994 civic hatch k- swap

Mon, 14 Apr 2025 17:39:12 -0700

how do i run my shifting cables too my short shifter under the car

i have looked up and down on the website i might be over looking it

please help im ready to have my swap on the road

⟐ Commented April 14, 2025, 17:39 MST

Drivetrain: 1997 Honda Prelude hybird shift cable installation guide

Wed, 11 Dec 2024 13:31:36 -0700

Hi i am trying to install my hybird racing shift cables and having issues with the transmission going into gear and I am not sure if I have installed them correctly, by any chance would you have a installation guide for my vehicle? thank you

Engine: K Series Fuel Rail Inlet/Outlet

Wed, 20 Nov 2024 19:21:25 -0700

Can I use either side of the HR K-series fuel rail as the feed? Or is there a specific inlet and outlet port?

Accessories: Need to know what ac pressure switch you used on the a civic k20 eg

Fri, 26 Jul 2024 17:47:50 -0700

What pressure switch do you use on this K20 swap on a eg cause mine is not working

Rebuild whole car: Replacing the clutchline video

Tue, 23 Apr 2024 16:21:14 -0700

Hello. So I ordered a new clutch line for my aftermarket hybrid racing clutch that's in my 2008 Honda Civic si. I was wondering if there was a video I could watch on how to install the line properly.

Drivetrain: Are there any parts for 2006 Honda accord/ I know it is compatible wit

Sat, 04 Nov 2023 20:54:37 -0700

Are there any parts for 2006 Honda accord/ I know they should be compatible with 08 tsx but not sure what would fit. Actually looking for master slave cylinder

Engine: 85 chevy sprint k20a swap

Thu, 26 Oct 2023 16:14:50 -0700

I was wondering if anyone would know if a k20a would fit in the engine bay? I know modification will be required if it would fit.

Engine: Question about k20a engine swap for 94-01 integra

Tue, 05 Sep 2023 02:29:51 -0700

How much would it cost to put a k20a into a 94-01 integra?

Would that swap be possible ?

Would you guys be able to do it , and if so how much for parts and the engine plus labor?

Electronics: EM2 - ep2 kswap harness how to convert from wideband to narrow band

Mon, 13 Feb 2023 05:31:30 -0700

I have a Ep2 kswap with a k20a2 and the hybrid racing conversion harness, the 02 sensor are currently the uk oem narrow-band, the conversion harness is wired for wide-band use, is there a guide to convert the harness to work the 02 sensor in narrow-band

Electronics: Can I have the instructions to the 1988-1991 civic crx wire harnesses

Thu, 09 Feb 2023 15:28:48 -0700

I need the instructions to the 1988-1991 civic wire harness steps

Drivetrain: 06 civic si coupe transmission compatible with 05 rsx type s manshaft

Sat, 21 Jan 2023 21:17:38 -0700

Hi hopefully i can get an answer as soon as i can. Im rebuilding my 06 civic si coupe transmission and all i need is a mainshaft. I couldnt find it anywhere, i found a mainshaft from a 2005 rsx type s. Im wondering if i can use the mainshaft from there and use it for my civic? Any fitment issues??? Thanks

K24a conversion: What conversion harness will I need for k24a in my 94 eg coupe

Thu, 11 Aug 2022 14:23:53 -0700

I’m looking into doing something like the YouTube video of the k24a into my 94 civic and am wondering which conversion harness, engine, harness and if I need to get kpro on a different ecu or if I can put it on mine

K-swap: What would I need to k-swap a 2002 Honda Accord lx

Sat, 18 Jun 2022 07:53:37 -0700

K-swap 2002 Honda Accord lx