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Air in cooling system
#1
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Joseph Earl
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Does anyone have any advice for purging the air from the cooling system after a complete flush? My thermostat (new) doesn't seem like it ever opened- I may have air trapped in the head. 22nd Series 327.

Thanks!

Posted on: 2012/4/9 20:46
Joey

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"If chrome got me home, I'd for sure still be stuck somewhere."

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Re: Air in cooling system
#2
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David Grubbs
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I always drill a small hole in the thermostat on my 51 288 to take care of the air bubbles. It won't hurt the cooling ability. A 1/8" drill will work wonders.

Posted on: 2012/4/9 21:13
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Re: Air in cooling system
#3
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Joseph Earl
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Thanks, David. I think I'll try that.

Posted on: 2012/4/9 22:17
Joey

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"If chrome got me home, I'd for sure still be stuck somewhere."

[url=http://pac
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Re: Air in cooling system
#4
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David Grubbs
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just be sure to remove the thermostat before you drill a hole in it. Water pumps don't like metal shavings....

Posted on: 2012/4/10 16:05
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Re: Air in cooling system
#5
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Tim Cole
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I also always drill a bleed hole in any thermostat that doesn't have a jiggle valve.

In addition on Packards when the new thermostat allows it I drill two 3/16-1/4 inch holes in it. This slows the warm up a bit, but provides a safety valve in case the unit sticks closed. Those old motor blocks can crack around the valve seats if they get too hot.

Posted on: 2012/4/10 17:32
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Re: Air in cooling system
#6
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Joseph Earl
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I drilled one 1/8" hole in the thermostat, and it seemed to alleviate the trapped air problem. I'll know more when I take it for it's first drive.

Posted on: 2012/4/10 18:12
Joey

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"If chrome got me home, I'd for sure still be stuck somewhere."

[url=http://pac
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Re: Air in cooling system
#7
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steve-52/200
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where does this hole go exactly??

Posted on: 2012/4/15 19:37
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Re: Air in cooling system
#8
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BlackBeerd
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In the flat sheetmetal part of the thermostat. Anywhere is fine as long as you don't damage the bimetallic spring valve.

Posted on: 2012/4/15 20:16
1954 Clipper Super Touring Sedan -5462
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Re: Air in cooling system
#9
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Joseph Earl
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Exactly.

Posted on: 2012/4/15 20:48
Joey

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"If chrome got me home, I'd for sure still be stuck somewhere."

[url=http://pac
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