Thread: Installing Bob Shewmans thermostats
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Old 08-25-2016, 07:00 AM   #14
Frank Miller
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Default Re: Installing Bob Shewmans thermostats
Quote:
Originally Posted by glennsanders View Post
Just asking,why are they made with a hole
The hole is to let air escape as you fill the cooling system. Water goes into the block through the lower hoses and as it fills air need to be expelled at the top.
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