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K-Series Coolant Port Adapter (K20Z3 / K24)

Features:

Lifetime Hybrid Racing tech support at support.hybrid-racing.com

Easy Bleed system designed to let air out of the cool-ant system

-16AN threaded housing which allows for direct use of AN radiator hoses

IACV & Heater line delete option

3D CNC machined billet aluminum & hard anodize finish

This product may not be legal for highway use. Hybrid Racing is not responsible for any direct or indirect, actual or incidental expense attributed to the use of any performance parts sold by Hybrid Racing LLC. Purchasers

agree to all of the terms of this agreement upon the purchase of parts.

Important!! Please read the entire install guide twice before starting your instal-lation. No, really it’s a good idea to read it twice before you begin so everything

goes smooth ;)

Included:

(x1) Coolant housing

(x1) Laser cut gasket

(x4) Housing mounting bolts

(x1) -16AN threaded hose neck

(x1) -6ORB Plug

(x1) -8ORB Plug

(x1) -8ORB Heater hose adapter (if optioned)

(x1) -6ORB Nipple (if optioned)

(x1) Heater hose pipe bracket (if optioned)

(x2) Heater hose pipe bracket bolts (if optioned)

(x1) Rubber hose for IACV function (if optioned)

Hybrid Racing coolant port adapter base kit Hybrid Racing coolant port adapter base with optional heater hose and IACV kit.

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Install Guide

STEP 1: Remove the radiator cap and open the lower drain port on your radiator to drain the cooling sys-tem. We suggest doing this when the coolant is cool.

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Install Guide

STEP 2: Remove air intake system. (The car pictured uses the Hybrid Racing cold air intake kit. The re-moval of the OEM airbox is slightly different.

STEP 3:

Remove the engine wiring from

the bracket. Pull the tabs outward

to slide the plastic cover away

from the engine.

STEP 4:

With a 10mm socket, remove the

bolt that holds the wire harness

stay in place.

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Install Guide

STEP 4a: Remove the wire harness stay

bracket.

STEP 5: With a 12mm socket, remove the

OEM air intake support bracket

bolts.

STEP 5a: Remove the OEM air intake sup-

port bracket.

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Install Guide

STEP 6: Remove the coolant hose that

connects to the IACV.

(If you choose to use the IACV

with the HR coolant port, you will

should remove both sides of the

hose now.)

STEP 6a: Remove the upper radiator hose.

STEP 7: On the rear of the OEM coolant

housing, remove the heater

hose.

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Install Guide

STEP 8: With a 12mm socket, remove the

nut that holds the heater hose

pipe in place.

STEP 9:

Locate and bend the heater hose

pipe up and away from the OEM

coolant housing.

This is necessary for removal,

otherwise the coolant housing

will not have enough room to

slide off the studs.

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Install Guide

STEP 10: With a 12mm socket, remove the

two upper nuts, and two lower

bolts.

The coolant housing should now

be free. You may have to wiggle

it loose as it can get stuck to the

gasket.

STEP 11:

Slide the coolant housing away

from the engine and remove.

(You may have to pull the heater

hose pipe out of the way.)

STEP 12: Once the coolant housing is off,

take one of the nuts and spin it

on backwards.

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Install Guide

STEP 12a: Once the first nut is on, take an-

other nut and thread it on. Tight-

en them together.

Unscrew the first nut and the

stud should back out of the cylin-

der head. Do this for both upper

studs.

STEP 13: Install the gasket with the tab on

top. Take two of the included

bolts and stick them through the

housing.

(The coolant housing should

come assembled if you optioned

to include the heater hose and

STEP 13a: Install the coolant housing using

the supplied hardware.

Once all are threaded in, tighten

them in a crossing sequence.

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Install Guide

STEP 14: Bend the heater hose coolant

pipe mounting tab back into

place. The hole should align with

the supplied bracket.

STEP 15:

Re-install the stock wire harness

bracket.

STEP 16: Re-install the front bracket using

the OEM bolt.

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Install Guide

STEP 17: If optioned, install the rear heater

hose using the OEM clamp.

If you are not using a heater

hose, make sure the plug is

threaded in and is tight.

STEP 18:

If using the IACV, install the sup-

plied extended coolant hose. Use

the OEM clamps.

If you are not using the IACV, in-

stall and tighten the plug.

STEP 19: Re-install the upper coolant

hose.

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Install Guide

STEP 20: Fill system and make sure the

engine does not overheat.

STEP 20a:

If you are having trouble remov-

ing air from your coolant system,

you can open the bleeder screw

located on the top of the coolant

housing.

Congratulations!

The install is complete!

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Do I need the optional heater hose and bracket kit? Depending on your application, the retention of the heater hose may not be necessary. Most

K-Series swap cars will not use the heater attachments, while most 06-11 Civic Si applications will. While the system can be used either way for either setup, choose which best suits your goals.

I can’t get the OEM coolant port housing off, it won’t slide off. You may need to bend and wiggle the heater hose hard pipe a bit. There is very little room in the engine bay so you may need to get creative. Removing the wiring harness and heater pipe com-pletely will make it easier but is a lot of work. Try removing it without having to remove those parts.

I can’t get all of the air out of the coolant system Make sure the radiator cap is the highest point of the coolant system. If the upper radiator hose is, install the rad cap and use the bleeder valve on the coolant port adapter. Get the system up to temperature and open the valve. It should bubble and let the trapped air out. Tighten the valve and continue to add coolant.

What coolant should I use? We recommend using the OEM Honda 50/50 coolant mixture.

Is the coolant housing ready to install when I get it? Depending what options you choose, the coolant port housing should come fully assembled. However, it is in good interest to make sure that all of the parts are fully tightened before installing. It is MUCH easier to tighten them on a table versus on the engine.

Can I use the OEM gasket? No. The OEM gasket is stamped metal and therefor will not seal correctly with out housing.

Trouble Shooting & FAQ’s Tips and tricks to help you get it done!

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If you have any questions or comments, please email support at support@hybrid-racing.com

Legal Disclaimer

Users assume all cost and risk associated with these or any other items purchased from Hybrid Racing LLC. Parts sold or manufactured by Hybrid Racing LLC may not meet legal requirements for use on public roads. People thinking about purchasing product(s) from Hybrid Racing LLC should check with their local and state authorities for legality. It is the user’s re-sponsibility to know and comply with all local and federal laws and regulations. Use or installation of Hybrid Racing LLC products may affect user insurance and/or vehicle warranty coverage. It is the user’s sole responsibility for consequences that may occur due to having the product installed in his/her vehicle. Hybrid Racing LLC assumes no legal responsibilities and/or liabilities, whether to us-er’s vehicle, engine, person(s), and/or property(s), that result from the use of, or servic-ing of a vehicle of which a Hybrid Racing LLC product has been installed/attempted to be installed, or to any other vehicle(s) and/or person(s), regardless of whether or not this product has any involvement directly or indirectly and/or liability, and/or whether or not proper installation has been carried forth. All engines, engine parts and electrical components are for OFF ROAD USE ONLY/RACING VEHICLES ONLY. They are not for or to be used on public roads in the USA. Acquisition of a Hybrid Racing LLC product will act as an acknowledgement of the le-gal disclaimer stated herein. Hybrid Racing LLC reserves the right to change this disclaimer at any time without any prior consent or notification.

Should you need to contact us our details are as follows: Hybrid Racing LLC, 12231 Industriplex Suite B, Baton Rouge, LA 70809

www.hybrid-racing.com