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Old 01-12-2009, 11:23 AM   #1 (permalink)
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Which way is the thermostat supposed to face?

351W 4v, 1969, Which direction should the thermostat point?
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Old 01-12-2009, 11:47 AM   #2 (permalink)
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Re: Which way is the thermostat supposed to face?

The SPRING on a thermostat ALWAYS faces the ENGINE

The heat is in the engine and wants out! Heat rises.

When your coolant escapes the engine block through the thermostat it cools from the air flowing over the vanes in the radiator.

This coolant then flows downward through the radiator and into the bottom of the engine through the water pump and starts the process all over again.


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Old 01-12-2009, 08:15 PM   #3 (permalink)
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Re: Which way is the thermostat supposed to face?

Quote:
Originally Posted by FEandGoingBroke View Post
The SPRING on a thermostat ALWAYS faces the ENGINE

The heat is in the engine and wants out! Heat rises.

When your coolant escapes the engine block through the thermostat it cools from the air flowing over the vanes in the radiator.

This coolant then flows downward through the radiator and into the bottom of the engine through the water pump and starts the process all over again.


FE
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Old 01-12-2009, 10:51 PM   #4 (permalink)
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Re: Which way is the thermostat supposed to face?

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Originally Posted by ajourdin View Post
351W 4v, 1969, Which direction should the thermostat point?
Points towards radiator.
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Old 01-12-2009, 10:54 PM   #5 (permalink)
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Re: Which way is the thermostat supposed to face?

Allenman is right, if you looked at is as an arrow with the spring as the shaft then it would indeed point towards the radiator!
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Old 01-13-2009, 01:12 AM   #6 (permalink)
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Re: Which way is the thermostat supposed to face?

The spring goes to the engine side.
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Old 01-13-2009, 03:10 AM   #7 (permalink)
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Re: Which way is the thermostat supposed to face?

Agreed. The pointy dealy-doo should be pointing at the radiator.
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Old 01-13-2009, 04:10 AM   #8 (permalink)
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Re: Which way is the thermostat supposed to face?

If you don't put the spring where the heat is, it will not open to let the hot water flow to the radiator. If you don't want to cool the water, you might as well cap off the holes to the motor and throw your radiator in the scrap pile.
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Old 01-13-2009, 09:18 AM   #9 (permalink)
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Re: Which way is the thermostat supposed to face?

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Originally Posted by mmerlinn View Post
If you don't put the spring where the heat is, it will not open to let the hot water flow to the radiator. If you don't want to cool the water, you might as well cap off the holes to the motor and throw your radiator in the scrap pile.
Didn't I kind of splain' that in my first post?
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Old 01-13-2009, 11:35 AM   #10 (permalink)
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Re: Which way is the thermostat supposed to face?

If you still can't figure it out, examine it very closely because some of them have an arrow or 'rad' ingraved on it.
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