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Hybrid Racing K20Z3/K24 Coolant Port Adapter Review this guide for instructions on how to install the Hybrid Racing upper coolant port for the K20Z3/K24 engine.

1 Hybrid Racing K20Z3/K24 Coolant Port Adapter Review this guide for instructions on how to install the Hybrid Racing upper coolant port for the K20Z3/K24 engine. This guide features the kit being installed on a Honda Civic Si. If you are installing this part on a different chassis, the insta Written By: Hybrid Racing 2017 guides.hybrid-racing.com Page 1 of 14

2 INTRODUCTION Hybrid Racing K20Z3 upper coolant neck adapter was designed for th Gen Civics or K- Swap owners who need to modify or improve the function and form of their car s cooling system. It boasts full 6061-T6 aluminum construction, lending it a strong and lightweight design along with a clean appearance that will put your OEM coolant housing to shame. The kit s modular design allows the user to configure it to their exact setup. TOOLS: metric socket set. (1) 1/2" ratchet, 3/8" ratchet, and ratchet extensions (1) 2017 guides.hybrid-racing.com Page 2 of 14

Unscrew the drain plug and drain the coolant from the engine and radiator Be sure to use a

3 Step 1 Hybrid Racing K20Z3 Coolant Neck Adapter Start by removing the radiator cap Never open the radiator cap if the coolant is still hot. Unscrew the drain plug and drain the coolant from the engine and radiator Be sure to use a coolant safe container. If you are not re-using the coolant, dispose of according to your local environmental laws guides.hybrid-racing.com Page 3 of 14

4 Step 2 Remove the air intake system. This car is equipped with the Hybrid Racing air intake. The OEM air box will require a few more steps. Step 3 Remove the engine wiring from the bracket. Pull the tabs outward to slide the plastic cover away from the engine guides.hybrid-racing.com Page 4 of 14

5 Step 4 Remove the wiring harness bracket from the coolant housing. Step 5 Remove the OEM air intake support bracket guides.hybrid-racing.com Page 5 of 14

Step 6 Remove the coolant hose that connects to

6 Step 6 Remove the coolant hose that connects to the IACV. If you choose to use the IACV with the HR coolant port, you should remove both sides of this hose now. Remove the upper radiator hose. Step 7 On the rear of the coolant housing, remove the heater hose guides.hybrid-racing.com Page 6 of 14

Step 8 Remove the nut that holes the heater hose

This is necessary for removal, otherwise the

7 Step 8 Remove the nut that holes the heater hose pipe in place. Step 9 Locate and bend the heater hose pipe tab up and away from the OEM coolant housing. This is necessary for removal, otherwise the housing will not have enough room to slide off the studs guides.hybrid-racing.com Page 7 of 14

8 Step 10 Remove the two upper nuts and two lower bolts. The coolant housing should be free however 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 it from the engine bay. You may need to hold the heater pipe out of the way guides.hybrid-racing.com Page 8 of 14

Step 12 Use one of the nuts and spin it on backwards.

Unscrew the inside nut and the stud should back out of the cylinder

Step 13 Install the gasket with the tab on the top.

9 Step 12 Use one of the nuts and spin it on backwards. Take another nut and thread it on, tighten them together. Unscrew the inside nut and the stud should back out of the cylinder head. Do this for both upper studs. Step 13 Install the gasket with the tab on the top. Take two of the included bolts and stick them through the housing. Check to make sure all of the fittings are tight guides.hybrid-racing.com Page 9 of 14

10 Step 14 Install the new coolant port housing and tighten them in a crossing sequence. Step 15 Bend the heat hose pipe mounting tab back into place and install the factory mounting bracket guides.hybrid-racing.com Page 10 of 14

11 Step 16 Re-install the heater hose onto the new outlet fitting. Re-install the heater hose pipe mounting bracket. Step 17 If using the IACV, install the supplied extended coolant hose. Use the OEM clamps guides.hybrid-racing.com Page 11 of 14

12 Step 18 Re-install the upper coolant hose guides.hybrid-racing.com Page 12 of 14

Once the engine warms up, the thermostat will open requiring you to add more coolant to the system.

13 Step 19 Once all of the parts are tight, fill the system with coolant and bring the engine up to operating temperature. Check for and fix all leaks. Be sure that the car has enough coolant and monitor your temperature gauge. Once the engine warms up, the thermostat will open requiring you to add more coolant to the system. If you are having trouble getting the air out of the system, you can use the top mounted bleeder screw guides.hybrid-racing.com Page 13 of 14

14 Step 20 You're finished! This document was last generated on :35:29 PM guides.hybrid-racing.com Page 14 of 14

06-11 Civic Si / EM1 Clutch Master Cylinder

06-11 Civic Si / EM1 Clutch Master Cylinder Upgrade This guide will show you how to install the EM1 CMC upgrade kit in a 2006-2011 Honda Civic Si. Written By: Hybrid Racing 2017 guides.hybrid-racing.com/