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BOV turning/rotating

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Old Mar 31, 2017 | 07:26 PM
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Default BOV turning/rotating

This is my first turbo car. Is the BOV supposed to be able to turn by hand? I can turn mine either way with minimal force. Is this normal? Also if I tighten it down so it doesnt turn with this have any effect on anything?

Also are there any adverse affects on it turning/rotating?
Sorry for the newb question.
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Old Mar 31, 2017 | 07:51 PM
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What kind of bov do you have. Any links or pics? There is a lot on the market
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Old Mar 31, 2017 | 08:18 PM
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Originally Posted by Nathaninwa
What kind of bov do you have. Any links or pics? There is a lot on the market
Its a TIAL and if you notice in the pics I can either rotate just the bov or the entire thing including the clap area.




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Old Mar 31, 2017 | 08:34 PM
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all FI setups should get a pressure test. Fill the plumbing with whatever pressure you intend to run and check for leaks.

You can google "boost leak test" for more info
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Old Mar 31, 2017 | 08:43 PM
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Typically they don't spin. Have you tried tightening the clamp? Take it apart and maybe it's missing a sealing ring or an oring
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Old Mar 31, 2017 | 09:34 PM
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Originally Posted by Nathaninwa
Typically they don't spin. Have you tried tightening the clamp? Take it apart and maybe it's missing a sealing ring or an oring
I havent tried yet but if I tighten it yet, would it spinning like it does possibly cause a boost loss?
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Old Mar 31, 2017 | 11:52 PM
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You have to use your head here. Ask yourself, what is the rough diameter of an pair of oxygen/nitrogen atoms? How much space between my parts must exist for me to be able to move them the way I do?

I can guarantee that even on plumbing setups with no boost leaks and good results from pressure tests, still leak air molecules because they are so small it is almost impossible to contain all of them, all the time.

So the real question is, how much space exists between the mating surfaces of the piece of plumbing you are manipulating, spinning and wondering about. Well nobody on the internet is going to be able to tell you because none of us have manufactured, inspected, and measured that part for you. that is why you need to pressure test it, to see if the leak, which there definitely is a leak (to answer your exact question accurately), given the size of air molecules. What you should be asking instead is, "is the leak significant" and then pressure test it to find out.
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Old Apr 1, 2017 | 07:55 AM
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yeah tighten it up dude. it has an o-ring seal, but you gotta compress it pretty good
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I'm willing to bet the o ring is not in there.
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