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Old 01-28-2005, 05:52 PM   #1
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Exclamation How to Thread!!!

Ok this is going to serve as our "how to" section just for integra's. This thread however will reamain locked, and if you have an "how to" you would like to add then contact me and I will let you put it in here. However the "how to" must be correct and you must explain how to do the job the best you can so that everybody can uunderstand easily.
Ok let's get started
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Old 01-28-2005, 06:25 PM   #2
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Ok here is a "how to" on changing the thermostat on a 3rd gen integra. The 2nd gen integra's will be almost the same though.


Supplies needed: Drain pan for coolant, 2 gallons of Honda Antifreeze (50/50 mix), a new thermostat with gasket, some hondabond or any other ATV sealant, and a new washer for the block drain plug.
For the antifreeze I used honda fluid, it was about the same price as every other coolant and it comes mixed 50/50 already. Buying it this way makes it much easier FYI.
Note: you may also want to pick up one of those really big drip pans form the parts store because this job will have coolant draining all over the place.

1. Make sure that the motor is cool to the touch. This is very important, you will risk burning yourself if you don't

2. Slide your heater control all the way to the hot side.

3. Remove your radiator cap.

4. We are going to need to drain all the coolant out of the system. You will first need to remove the drain plug from the radiator. The drain plug is just to the side of the lower radiator hose.



5. We now need to remove the drain bolt from the engine block.
Note: this bolt is kinda tight so you may or may not want to use a 1/2" breaker bar to loosen it.




6. Let all the coolant drain from the block and the radiator.
Note: by doing it this way you will not need to flush the system, this method will drain all the coolant form the system. You also need to remove and drain the over flow tank to the left of the radiator.

7. Replace the drain plug in the radiator. Now you need to replace the washer that is on the drain bolt for the engine block with a new one. Then put a thin layer of gasket sealer on the threads. Now replace the bolt and torque it to 58lb-ft.

8. Ok now we are going to remove the radiator hose that feeds the thermostat housing. Just simply grab the clamp with a pair of pliars and pull it back while slowly truning it. The thermostat housing is right behind the distributor almost under the intake manifold. You will more than likely have to remove your intake pipe in order to access the thermostat housing.

9. Ok here is the thermostat housing.


10. You will need to remove the bolt that holds the ground wires to the housing. You will need a 10mm socket for this.

11. Next you will want to unplug the coolant temp sensor.



Ok now you should have the hose off, ground wires off and the coolant temp sensor unplugged.

11. You will now need to remove the to bolts holding the thermostat housing together. They is one bolt on each side. The bolt one the front side (towards the front of the car) can be removed with a socket. The bolt on the rear side though is a little more difficult to get out so you will need a wrench, a ratchet wrench would work well here.

12. Ok here is a pic of what it will look like when you get the thermostat housing cover off. You can see the thermostat sitting in the housing.


Note: Make sure that when you put in the new thermostat that you line up the pin on the back side of the thermostat with the groove in the housing.

13. Now we can put the new thermostat in. When you open your new thermostat you will find a thermostat and a gasket ( if you bought the OEM unit). You will need to install the gasket onto the thermostat just like you see the old one is. Notice that the pin I was talking about is circled in red. The red arrow is pointing to where the cutout on the gasket must line up.




14. Now place the thermostat back into the housing, making sure that the pin on the back side is aligned with the groove in the top of the thermostat housing. This is very important, if you do not get the pin lined up then you will have a leak.
15. now that you have the thermostat back in the housing it is time to put the thermostat cover back on. You just simply make sure that it is clen and free of any dirt or liquids and place it back in place over the thermostat. Then put the two bolts back in that hold it on. You will need to torque these bolts to 8lb-ft
16. Replace the ground wires and plug the coolant temp sensor back in.
17. Now you can reaplace the coolant hose and clamp.
18. Ok now that we have evrything back together we can start to re fill the coolant system. Just simply fill the radiator up to the base of the filler neck. Then loosen the bleeder bolt ( refer to pic below) and leave it open. Then start filling the radiator up again until the fluid level reaches the base of the filler neck. You should be able to keep adding coolant until coolant starts comming out of the bleeder bolt. When coolant starts flowing out of the bleeder bolt then you have filled the engine block and the rest of the system almost completely.


19. Ok now you need to put your radiator cap back on, but only turn it to the first stop. Do not put it all the way on. You will want to start the car and let the car run until the radiator fans come on with the cap only on to the first stop, this might take a few mins but it is needed. After the radiator fans come on then you need to turn the motor off nad remove the cap and check the fluid level. If needed refill it to the base of the filler neck and then fill the over flow tank to the proper level and you are done.

Note: This is very very important, DO NOT let any tap water get into your coolant system. That means that if you do not buy pre mixed coolant than you need to buy some distilled water to mix the coolant with. If you use tap water then you will be introducing chlorine into your coolant system and it will cause damage. Chlorine will corrode aluminum and cause damage to your coolant system. This also mean do not use those flush kits that you hook up to you garden hose, those cause damage to cars with aluminum coolant system parts.

If you have any questins regaurding this "how to" then simply PM me or Email me and I will respond as quickly as I can.
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