- High Quality Car Audio & Car Performance - Do it for your own good.
  Automotive Paint
  Car Care
  Car Maintenance
  CV Shafts
  Engine Lubes
  Engine Management
  Exhaust Cut-outs
  Exhaust Hardware
  Exhaust Kits
  Exhaust Piping
  Motor Mounts
  Performance Books
  Racing Seats

  Tech Section
  Online Tools
  Available Brands
  Manufacturer Catalogs
  Newsletter Archive
  Our services
  Customer Comments
  Contact Us
Powered by
Car Modification > Projects > Honda Civic SE Coupe 2000 > Performance Radiator Installation

Performance Radiator Installation:

Tools Used:
  • 10mm Ratchet
  • Wide pliers
  • Silicone lube
  • Radiator fluid
Products Used:
  • Fluidyne FHP11-92CIV - Performance Radiator
Make sure engine temperature is low enough for you to touch the radiator's core. Remove the radiator cap. If the engine is still warm, this can be dangerous.
Disconnect the radiator fan harness.

Using the wide pliers, disconnect the lower radiator pipe. Place a container underneath the area you're disconnecting the hose. The rubber pipes collapse under the strength of the clamp, so this isn't as easy as it may seem.

Note: Picture angle is taken from underneath the car.

Once most of the fluid has drained into a container, disconnect the upper radiator pipe using the wide pliers. There should still be a little fluid inside this pipe.
Using the 10mm ratchet (or other), remove the bolt holding down the radiator bracket.
Pull upwards, making sure you hold the pipes upwards to avoid spilling fluid everywhere. Empty the remaining fluid from the radiator and disconnect the hoses.
Remove the two lower rubber supports from the radiator.
Using a 10mm ratchet (or other), remove the fan from the original radiator and install it to the aftermarket performance radiator. The bolts align only in one direction, so don't worry about putting it upside-down.
Use silicone lube on the outer part of the new radiator where the hoses connect. The hoses contracted with time, so be patient. This will prove difficult and frustrating. You can stretch the hose a little with a pair of pliers.
This is where we were greatly disappointed in Fluidyne. They have a reputation for good radiators, but in order to clear the radiator support, you have to carefully bend the upper part of the frame. This might only be the case on Canadian models of the 1999-2000 Civic. It's important that the radiator never come in contact with other metal. Aluminum is a very soft metal!

Also, note that the hose connectors are 1.25" on the Fluidyne while 1" on stock. Stock hoses fit with lubricant and brute force, but reinforced aftermarket hoses (like Samco) don't fit AT ALL. The oversizing is to accomodate swaps.
Funny enough, Fluidyne's quality control didn't pick up on this. The overflow brass nipple wasn't sufficiently tightened. We learnt this the hard way...
Once again, fitment with the Fluidyne radiator was a problem. The upper radiator support bracket's rubber hole was WAY too big for the Fluidyne. We opted for a piece of silicone hose as it wouldn't be affected by the vibrations nor the heat.

Fill your new raidator with new radiator fluid. Don't forget to dilute it with water (see instructions on the fluid container).

Your stock temperature gauge won't read lower at operating temperature, since the engine's thermostat is set at a certain temperature. This mod has the advantage of lowering the temperature much quicker than stock, therefore reducing the amount of times the fan goes off. Your water pump won't have to pump as often thru the radiator.

© 2018,
All rights reserved.

Privacy Policy.
  Legal Notice.