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Old 12-27-2020, 03:03 PM   #1
Swedchevy67
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PVC valve breathing

Trying to figure out how it’s fitting on my valve cover.
Need help on the fitting order.
When I removed the cover, I heard something
dropped inside the cover. When I took the
cover up, this parts was laying inside on
the top.
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Old 12-27-2020, 03:11 PM   #2
truckster
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Re: PVC valve breathing

It's broken. I recommend you replace it.

If you decide to reuse it, the order would be housing, spring, weight, bottom cover. You'll need to figure out a way to glue the bottom cover on.
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Old 12-27-2020, 03:20 PM   #3
Swedchevy67
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Re: PVC valve breathing

[QUOTE=truckster;8855155]It's broken. I recommend you replace it.

If you decide to reuse it, the order would be housing, spring, weight, bottom cover. You'll need to figure out a way to glue the bottom cover on.

Are you sure it’s broken?
Ok. Where can I get new one?
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Old 12-27-2020, 04:20 PM   #4
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Re: PVC valve breathing

[quote=Swedchevy67;8855160]
Quote:
Originally Posted by truckster View Post
It's broken. I recommend you replace it.

If you decide to reuse it, the order would be housing, spring, weight, bottom cover. You'll need to figure out a way to glue the bottom cover on.

Are you sure it’s broken?
Ok. Where can I get new one?
Yes, it's definitely broken.. Positive Crankcase Ventilation (PCV) valves aren't normally disassembled for servicing.. Yours is worn out and has fallen apart.. PCV valves are cheap and available where ever automotive parts are sold... Bought locally from O'Reillys, NAPA, etc, they cost $4 - $5.. Bought on the internet the cost could double or triple..
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Old 12-27-2020, 04:28 PM   #5
Swedchevy67
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Re: PVC valve breathing

[quote=RustyPile;8855190]
Quote:
Originally Posted by Swedchevy67 View Post

Yes, it's definitely broken.. Positive Crankcase Ventilation (PCV) valves aren't normally disassembled for servicing.. Yours is worn out and has fallen apart.. PCV valves are cheap and available where ever automotive parts are sold... Bought locally from O'Reillys, NAPA, etc, they cost $4 - $5.. Bought on the internet the cost could double or triple..
Appreciate your replies.
Thanks
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Old 12-27-2020, 05:02 PM   #6
geezer#99
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Re: PVC valve breathing

Looks a lot more like a spark arrestor than a pcv to me.
What hose was it attached to?
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Old 12-27-2020, 05:14 PM   #7
Swedchevy67
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Re: PVC valve breathing

Quote:
Originally Posted by geezer#99 View Post
Looks a lot more like a spark arrestor than a pcv to me.
What hose was it attached to?
If I remember right, it was attached to
the carburettor.
Yes you’re absolutely right. It is NOT
the PCV valve breathe.
Thanks
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Old 12-27-2020, 11:35 PM   #8
Ol Blue K20
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Re: PVC valve breathing

Quote:
Originally Posted by Swedchevy67 View Post
If I remember right, it was attached to
the carburettor.
Yes you’re absolutely right. It is NOT
the PCV valve breathe.
Thanks
It is a PCV! No doubt in my mind.....
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Old 12-28-2020, 03:08 AM   #9
Swedchevy67
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Re: PVC valve breathing

Quote:
Originally Posted by Ol Blue K20 View Post
It is a PCV! No doubt in my mind.....
Confused????
PCV or Spark arrestor. Same same but
different name?
I’m no mechanic, only a hobby enthusiast!
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Old 12-28-2020, 10:27 AM   #10
geezer#99
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Re: PVC valve breathing

Easy to figure out.
Which valve cover was it on and where on the carb was the hose hooked to?
Pics help.
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Old 12-28-2020, 02:36 PM   #11
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Re: PVC valve breathing

Swedchevy67 has a '67 with inline 250.

If you have the original '67 Rochester B, there is no manifold Vacuum Port on the carb. The manifold vacuum port for the PCV is in the manifold, on the top of the 3-4 intake runner, behind the carb next to the head.

A spark arrester, if used, goes between the valve cover and the air cleaner. The arrestor is between the 2nd and 3rd hose clamps.

Forum pictures.
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Old 12-29-2020, 01:23 AM   #12
RustyPile
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Re: PVC valve breathing

Quote:
Originally Posted by RichardJ View Post
Swedchevy67 has a '67 with inline 250.

If you have the original '67 Rochester B, there is no manifold Vacuum Port on the carb. The manifold vacuum port for the PCV is in the manifold, on the top of the 3-4 intake runner, behind the carb next to the head.

A spark arrester, if used, goes between the valve cover and the air cleaner. The arrestor is between the 2nd and 3rd hose clamps.

Forum pictures.
Referring to those same pictures.. Look at the second picture.. The PCV valve is attached to the end of the small hose going to the rear of the valve cover -- near the firewall..
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Old 12-29-2020, 02:28 AM   #13
kwmech
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Re: PVC valve breathing

Don't get all confused. It is a PCV valve
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