Radiator fluids ... - Team Camaro Tech
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post #1 of 4 (permalink) Old Sep 15th, 10, 08:06 AM Thread Starter
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Lex
 
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Location: California
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Question Radiator fluids ...

In the past i remember changing out a radiator to a new one on a 76 Cutlass i used to own. After i changed it i remember someone asking me,
" Did you change the thermostat ?" I did not even know that i had to also change it. I don't even know where this was located.

Now i ask, where is this thermostat and how do you change it ? Is it a screw in bolt on the engine top ? Or is it something else ? Also how much coolant antifreeze goes in and how much water ? I have a 4 core radiator at the moment.
When the time comes to change it, i want to make sure i do it right, thanks everyone.


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68 Camaro / 400 ci / 3.73 10 /
Edelbrock Performer Series 600 cfm no. 14054
Edelbrock Performer EPS Intake Manifold 27014

98 GMC Suburban / 454 V8 / K2500 4x4

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post #2 of 4 (permalink) Old Sep 15th, 10, 10:18 AM
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Vince
 
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Re: Radiator fluids ...

The thermostat is located under the thermostat cover or water neck mounted on the front of the intake manifold where the upper radiator hose attaches. It is usually secured by two bolts. You would change the thermostat by removing the cover, taking the old one out along with the old gasket, and installing the new one along with a new gasket. Make sure you put the new thermostat in right side up and that it is the right temperature one (measured in degrees Fahrenheit) as specified in your owner's manual. Then just simply reinstall the cover. You should be able to do this without having to remove the upper radiator hose from the thermostat cover or water neck.
The best antifreeze/water mix is 50/50 or exactly half and half of each. Your owner's manual should state exactly how many quarts your cooling system holds; this would be based of course on the original factory size radiator.
One other thing. When replacing the radiator you also should replace the radiator cap with a new one.
Hope this helps.
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post #3 of 4 (permalink) Old Sep 16th, 10, 12:00 PM
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Russ
 
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Re: Radiator fluids ...

I believe when I filled my system from full dry it was ~4.5 gallons total.

I started by putting in a gallon of antifreeze, then a gallon of water, and continued in this manner till it was full. Since I had put in a new motor I connected up my 90 deg drill to the water pump before installing the fan and shroud so I could purge as much air as possible before starting the fresh motor. Space was freakin tight but it worked.

Russ (RJ)
The Garlic Capital, Gilroy,CA

(sold June 15,2014) 1968 RS convertible that is not quite stock

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post #4 of 4 (permalink) Old Sep 16th, 10, 03:16 PM
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Steps
 
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Re: Radiator fluids ...

If have a new motor, just jack the front of the car up then fill it up.
Always check a new thermostat hanging in a jug of water and a thermometer, turn the jug on make sure its opening right up, all the way and at the right temp.
Dont *** u me they are ok, espec with all the chinese crap around
And get the correct GM one..not just a 180 deg off the shelf
Fortuatly the GM for SB is the same from about 1959 thru to late 70s...comes in hi flow and std. High flow is for circuit track

My Spelling is not incorrect...it is creative

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