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Breakin’ Down the Parts for a K- and B-Series Swap - Buyer's Guide

Swapping For Dummies

Jun 27, 2012 SHARE
Sstp 1207 01+parts for k and b series swap+cover Photo 1/29   |   Breakin’ Down the Parts for a K- and B-Series Swap - Buyer's Guide

It’s an old topic but with Sean’s engine swap story elsewhere in this issue, we thought it would be a good refresher to show the main ingredients for a K- or B-series swap. While several years ago a K-series swap might have been new territory, today both swaps have been proven a thousand times over and over again. So forget worrying if it’s going to fit or be reliable. It will as long as you get the right gear and do some basic homework. If you’re new to the topic, it’s always best to consult your local Honda guru or the listed specialists below to ensure you have all the right parts to make your swap a success.

B-Series
First off, the B-series isn’t as powerful and new as the K but it’s more affordable and will net you 200whp naturally-aspirated or 300+whp with a bolt-on turbo upgrade. The four-cylinder DOHC VTEC engine came in a 1.6- to 1.8-liter and was rated from 160-200hp. While offered in almost all Civics and Integras in Japan, they were a little harder to come by here in the States, only equipped in Integras and a couple different model Civics. But because the motor was available here, it’s easier to get CARB-approved. You can pick up a basic B-series nowadays for around a grand but the more attractive motors will run you a bit more like the imported JDM models.

K-Series
After Honda retired the B-series, the K-series took over with cars such as the RSX, TSX, Civic Si and Accord. Still one of the best transverse naturally-aspirated four-cylinders around, it makes about 160-220hp. It’s become a very easy and proven swap, and with the addition of some basic bolt-ons, you can have a 250whp K20. Priced at a higher premium compared to the B-series, engine costs ranged up to five grand for a pristine motor—but well worth it if you have the coin.

Sstp 1207 02+parts for k and b series swap+k series Photo 2/29   |   Breakin’ Down the Parts for a K- and B-Series Swap - Buyer's Guide

5 Key Ingredients

Motor
The best and cheapest way to find a K- or B-series is by checking out the sale ads on your favorite Honda forum. Also check places like Craigslist and local junkyards, too. For JDM motors, you can hit up importers like Zerolift Autolab (zerolift.com) and JDM Engine Depot (jdmenginedepot.com). But here are some other must-have engine parts you’ll need.

Intake Manifold
How Much: from $499.99
Source: bloxracing.com, edelbrock.com, goldeneaglemfg.com, skunk2.com
Pictured: Skunk2 Pro Series

Sstp 1207 03+parts for k and b series swap+skunk2 intake manifold Photo 3/29   |   Breakin’ Down the Parts for a K- and B-Series Swap - Buyer's Guide

Throttle Body
How Much: from $275
Where: bloxracing.com; bwrusa.com; skunk2.com
Pictured: Blox Racing Billet

Sstp 1207 04+parts for k and b series swap+throttle body Photo 4/29   |   Breakin’ Down the Parts for a K- and B-Series Swap - Buyer's Guide

Header/Exhaust Manifold
How Much: From $400
Where: aempower.com, bisimoto.com, bloxracing.com, buddyclub.us, dcsports.com, skunk2.com

Sstp 1207 05+parts for k and b series swap+dc sport k20a2 header Photo 5/29   |   Breakin’ Down the Parts for a K- and B-Series Swap - Buyer's Guide
Sstp 1207 06+parts for k and b series swap+blox 4 2 1 header Photo 6/29   |   Blox Racing 4-2-1 Header

Drivetrain
The next piece of the puzzle is to make sure you have all the proper drivetrain components (if it already isn’t included when you pick up the motor). But remember, you’ll need the half-shaft, shift linkage and proper axles for the swap.

Axles
How Much: from $330
Where: driveshaftshop.com, hasport.com

Sstp 1207 14+parts for k and b series swap+driveshaft shop axle Photo 14/29   |   Driveshaft Shop Level 5.9 K-series axle/hub kit

Clutch Line
How Much: from $65.99
Where: chasebaysonline.com, hybrid-racing.com
Pictured: Chase Bays

Sstp 1207 15+parts for k and b series swap+clutch line Photo 15/29   |   Breakin’ Down the Parts for a K- and B-Series Swap - Buyer's Guide

Bolt-In Shifter
How Much: from $379
Where: hasport.com, hybrid-racing.com
Pictured: hybrid racing

Sstp 1207 16+parts for k and b series swap+bolt in shifter Photo 16/29   |   Breakin’ Down the Parts for a K- and B-Series Swap - Buyer's Guide

Shifter Mounting Kit
How Much: $125
Where: karcepts.com

Sstp 1207 17+parts for k and b series swap+shifter mounting kit Photo 17/29   |   Breakin’ Down the Parts for a K- and B-Series Swap - Buyer's Guide

Mounts
Can’t use the factory mounts because the motor wasn’t intended for every Honda chassis. Duh! But now you can find tailored mounts for almost every Honda and Acura model including the Integra AV/DA/DC, Civic EA/EF/EG/EK, Accord and more. There are also variations on durometers (stiffness) and colors so check with each mount supplier.

Sstp 1207 18+parts for k and b series swap+hasport k swap mounts Photo 18/29   |   Hasport K-Swap mounts

Mount Kits
How Much: from $499
Where: hasport.com, hybrid-racing.com, innovativemounts.com

Electronics
One of the key components to a successful swap is the wiring harness to make the motor in your applicable chassis work. After all, you’ll want all your gauges and ancillaries to be running like factory. The ECU is also important to ensure your motor runs like a champ whether you’re sticking to just bolt-ons or forced induction.

Sstp 1207 20+parts for k and b series swap+conversion harness Photo 19/29   |   Breakin’ Down the Parts for a K- and B-Series Swap - Buyer's Guide

ECU Modification/Reflash
How Much: from $595
Where: hondata.com

Sstp 1207 19+parts for k and b series swap+ecu reflash Photo 20/29   |   Breakin’ Down the Parts for a K- and B-Series Swap - Buyer's Guide
Sstp 1207 24+parts for k and b series swap+hondata ecu Photo 21/29   |   Hondata K-Pro ECU modification

Conversion/ Adapter Harness
How Much: from $299
Where: chasebaysonline.com, hasport.com, hybrid-racing.com, k-tuned.com, rywire.com

Sstp 1207 22+parts for k and b series swap+adapter harness Photo 22/29   |   Breakin’ Down the Parts for a K- and B-Series Swap - Buyer's Guide
Sstp 1207 21+parts for k and b series swap+wire harness Photo 23/29   |   Breakin’ Down the Parts for a K- and B-Series Swap - Buyer's Guide
Sstp 1207 23+parts for k and b series swap+aem ems Photo 24/29   |   AEM engine management system

Fueling & Cooling
The final things you’ve got to worry about are keepin’ the motor fueled and cooled. You won’t need to do too much to the fueling except a new fuel rail. As for the cooling, you’ll need a radiator. There are plenty of different options from full- to half-size models as well as tucked radiators to keep the bay minimal.

Fuel Rail Kit
How Much: from $125
Where: goldeneaglemfg.com, hybrid-racing.com, karcepts.com, powerrevracing.com

Sstp 1207 25+parts for k and b series swap+karcepts fuel rail Photo 25/29   |   Karcepts K-Series fuel rail kit

Radiator
How Much: from $399.99
Where: chasebaysonline.com, karcepts.com, koyorad.com, mishimoto.com, rywire.com
Pictured: Chasebays, Rywire

Sstp 1207 26+parts for k and b series swap+chase radiator Photo 26/29   |   Chase Bays tucked radiator
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Sources

Skunk2 Racing
Norco, CA 92860
951-808-9888
http://www.skunk2.com
Blox Racing
Fremont, CA 94538
510-440-1605
http://www.bloxracing.com
DC Sports
City of Industry, CA 91746
800-237-7560
http://www.dcsports.com
Power Rev Racing
Miramar, FL 33025
954-543-5053
http://www.powerrevracing.com
Buddy Club USA
Ontario, CA 91761
909-923-9188
http://www.buddyclub.us
HASport Performance
Phoenix, AZ 85040
602-470-0065
http://www.hasport.com
Hondata
Torrance, CA 90503
310-782-8278
http://www.hondata.com
Vibrant Performance
905-564-2808
http://www.vibrantperformance.com
AEM Power
Hawthorne, CA 90250
310-484-2322
http://www.aempower.com
Karcepts
n/a, AK
240-490-7173
www.karcepts.com
Rywire
Garden Grove, CA 92843
240-479-9473
http://www.rywire.com
Driveshaft Shop
Salisbury, NC 28147
704-633-2380
http://www.driveshaftshop.com
Sam Du
By
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