Hi guys! Here is my L15B7 swapped 99 hatch. Has been so much fun to drive already, and hope to see track time in the coming months!

 

@L15B7EK Hey man, I wanted to DM you some questions about the swap but can post them here instead. I hope you're willing to share some more information about the swap, as the internet as it stands has limited info. I'm interested in doing the swap into my own car and have never seen one in person yet.

1. Does your heater system work?
2. Did you use the JDI jumper/adapter harness to integrate into the Civic chassis? If yes, how's the quality?
3. What are the details of your fuel system?
4. How's the clearance to the subframe?
5. What axles are you running?
6. What radiator setup are you using and have you run it at the track yet? Any heating issues to be aware of?

Thanks!

 

@ShinsenTuner hello! Would love to answer any questions you have.

1. my heater does still work, just used bulk 5/8 heater hose and ran lines to my heater core. Did not reuse the heater control valve though.

2. I did not use the JDI harness, as it was produced well after the car was done. I had a custom harness built, but is essentially the same as the JDI setup.

3. My fuel system is fairly straightforward and similar to a K. I’m using a Radium fuel hanger with a walboro gss342 pump, vibrant 8AN supply/return lines, and an aeromotive fuel pressure regulator mounted on the firewall. Just set to whatever the spec was on the 10th gens (believe it was around 60psi) Pretty basic!

4. The passenger axle inboard joint is the only thing that comes close to the subframe. Other than that, a good amount of room.

5. Axles vary based on what transmission you run, as the si variants have a limited slip diff with a different spline count than the non-si transmissions. I’m using a non si, which accepts 27 spline axles. Meaning k swap axles are essentially a perfect fit! Currently run an 8th gen r18 manual passenger axle, and rsx base drivers axle. I previously ran an rsx passenger axle with flipped inner joints like a k, but was about 1/2” too short and would sling grease everywhere when used on track. For the perfect fit, you can run axles made by Hasport.

6. The cooling system is something I’ve had a few iterations of, finding the best setup for my application. Most of my driving in this chassis has been on track. I only now street drive it when going to/from tracks (no trailer life). What I would HIGHLY suggest is having Rob from Tractuff build your setup. I worked with him from the beginning of my swap, and he is top notch. Currently run a modified integra k swap koyo radiator, 14” spal fan with NO shroud (for better exit flow on track - found high temperatures with a custom shroud!). The whole system is plumbed in AN line. Rob modified my thermostat housing to add a couple ports, and also makes a custom thermostat cover that I run. We also utilized a header tank to run like the factory system does. With the factory thermostat In place, you’ll see 190 street driving all day long. I run a hybrid racing 155* stat, and now see 205-210 as highs during 20 minute track sessions. The system is SUPER efficient and I would highly recommend it.

I’ve ran 15 track events with this swap so far, going for 16 this weekend at Thunderhill Raceway. Even competed with it in a time attack series, and it held up great.

If you have any more questions, feel free to ask here or reach out to me on my Instagram. I will likely reply faster there.

instagram: L15B7EK

Thanks!

 

Some on track pics!


Some updated pictures

 

Thanks for the response! I love that it’s being actively driven hard as well. I’ll likely reach out via IG.

 

Is there any modding needed to the og interior/lights harnesses ?
What info does the ktuner display/can it dispay, i'm thinking daily driver build in an eg.

 

The lighting and interior harness are untouched, as this is now a plug and play swap with the correct chassis adapter harness!

Ktuner V2 unit can display most pids that would show up with any scan tool - rpm, mph, boost pressure, fuel trims, temps, etc. Very useful, I use it as my display on the dash.

 

I haven’t updated the thread in a long time - lots of things have changed!

To start, 20+ track days with the L15 has been extremely fun. I reside in the PNW, and The Ridge Motorsports Park in WA is my home track. I have been competing in a time attack series the past two seasons with the EK, and even drove it 1400 miles round trip to a 2 day race weekend at Thunderhill in CA. Made the trip/event with 0 issues and averaged over 40mpg on the drives from Washington to California and back.

As for modifications, I have added the following L15 specific things in the last year or two:

-ARP headstuds (first head gasket let go on stock headbolts, second was on studs but was because of a coolant leak that I failed to notice during a race and severely overheated the engine)
-RV6 3/4 gear set
-MFactory Helical LSD
-Syncrotech carbon synchros and master rebuild kit
-Syncrotech hardened 3/4 sleeve
-Wunderladen oil pan baffle (HIGHLY recommend to anyone tracking their 10/11th gen) + AEM oil pressure sensor

I have done quite a bit to the car itself as well, including electronic power steering, roll bar/harness, new suspension setup with almost all spherical arms, etc. It has been such a blast to drive, and I can’t wait to see more L15 swaps on the road.


Sparco seat with 6 point harness

Eimer engineering roll bar

RV6 3/4 gear set, MFactory helical LSD, syncrotech carbon master rebuild kit


Wunderladen oil pan baffle

First head gasket job
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Second head gasket job

 

Very nice! Hoping the new head gasket + stud combo stays stout.