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| Radiator Petcock Thread Direction? https://slantsix.org/forum/viewtopic.php?t=67690 |
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| Author: | ric325v63 [ Thu Mar 28, 2024 7:45 am ] |
| Post subject: | Radiator Petcock Thread Direction? |
I am sorry for this simple question but I'd like a definitive answer before I try to open my radiator's petcock. I have not drained this radiator before. It's a 1966 Coronet Slant Six with the stock 22" radiator. I just can't see which direction the threads are leaning with my bifocal lenses and OLD eyes! The petcock is more than finger tight and I want to go the right direction to open it before I apply a little more pressure on it. The radiator and petcock are in good looking shape. Thank for the help. Jon |
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| Author: | hyper_pak [ Thu Mar 28, 2024 8:34 am ] |
| Post subject: | Re: Radiator Petcock Thread Direction? |
If you lean over the rad, push the right side arm on the petcock down. |
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| Author: | ric325v63 [ Thu Mar 28, 2024 10:16 am ] |
| Post subject: | Re: Radiator Petcock Thread Direction? |
So, that would be counter-clockwise if I was under the car looking straight at the petcock? Thank you! I need someone who knows. |
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| Author: | Charrlie_S [ Thu Mar 28, 2024 10:38 am ] |
| Post subject: | Re: Radiator Petcock Thread Direction? |
Quote: So, that would be counter-clockwise if I was under the car looking straight at the petcock? Thank you! I need someone who knows.
Correct. righty/tighty, lefty/ loosey
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| Author: | Dart270 [ Thu Mar 28, 2024 11:08 am ] |
| Post subject: | Re: Radiator Petcock Thread Direction? |
Just like loosening a bolt. Note that the threads are LH, so it will actually screw into the radiator even though you are turning it counterclockwise (as viewed from aft of the radiator). Lou |
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| Author: | ric325v63 [ Thu Mar 28, 2024 5:57 pm ] |
| Post subject: | Re: Radiator Petcock Thread Direction? |
Thanks folks. I would have guessed LH thread but it's been so long since I've done this I wanted to check. I'm replacing coolant, thermostat, and thermostat housing drilled for secondary temp gauge. |
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| Author: | ric325v63 [ Fri Mar 29, 2024 11:47 am ] |
| Post subject: | Re: Radiator Petcock Thread Direction? |
All went well today draining and filling the cooling system. The petcock just took a bit more finger nudging in the right direction and it worked perfectly. Thanks again. |
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| Author: | Dart270 [ Fri Mar 29, 2024 11:54 am ] |
| Post subject: | Re: Radiator Petcock Thread Direction? |
Super. Congrats! Lou |
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