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What Valve Breather to get for GT

 
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Old 23 Apr 2019, 01:23 pm
shelbyzman's Avatar
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Default What Valve Breather to get for GT

I am installing a k&n style air filter on my GT. I have read that it is advised to not run the hose from the after market tube to the valve cover. So, what size inlet do I need for the little filter and do I mount it directly or use the hose? Also, any tips on how to plug the new air intake tube? Of course, it would be easiest just to mount the hose on the intake tube but I have read that oil etc will get in the turbo this way....what are your thoughts?
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Last edited by shelbyzman; 23 Apr 2019 at 02:37 pm.
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Old 23 Apr 2019, 08:13 pm
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Default Re: What Valve Breather to get for GT

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Originally Posted by shelbyzman View Post
I am installing a k&n style air filter on my GT. I have read that it is advised to not run the hose from the after market tube to the valve cover. So, what size inlet do I need for the little filter and do I mount it directly or use the hose? Also, any tips on how to plug the new air intake tube? Of course, it would be easiest just to mount the hose on the intake tube but I have read that oil etc will get in the turbo this way....what are your thoughts?
There's no advantage to running a KN air filter except for noise, and more space in the engine bay. There's no performance increase, and there's the fact that your oil change intervals will have to be reduced.
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Old 24 Apr 2019, 08:28 am
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Default Re: What Valve Breather to get for GT

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Originally Posted by _PTGT03 View Post
There's no advantage to running a KN air filter except for noise, and more space in the engine bay. There's no performance increase, and there's the fact that your oil change intervals will have to be reduced.
Thanks for the info but I already ordered it. I'm curious to why the oil change intervals would have to be increased? Wouldn't the K&N flow more air which in turn increases performance?
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Old 24 Apr 2019, 09:21 am
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Default Re: What Valve Breather to get for GT

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Originally Posted by shelbyzman View Post
I am installing a k&n style air filter on my GT. I have read that it is advised to not run the hose from the after market tube to the valve cover. So, what size inlet do I need for the little filter and do I mount it directly or use the hose? Also, any tips on how to plug the new air intake tube? Of course, it would be easiest just to mount the hose on the intake tube but I have read that oil etc will get in the turbo this way....what are your thoughts?
Here's the setup I had on my PT GT.

The catch can is an inline compressed air filter from Harbor Freight. I removed the filter element and reversed the drain valve on the bottom. I mounted it to the side of the air dam and put on a COOL blue vent filter from Advance Auto.

I also added a Boomba check valve between the PCV valve and intake manifold. That check valve really cuts down the oil that shows up in the vent filter. The problem with the stock setup on the turbo PT's is that all you have to prevent boost pressure from positively pressuring the crankcase during boost is the PCV valve. In many cases, it's just not up to the task. Using an extra check valve helps this a great deal. Some members have used inexpensive plastic check valves and had the same improvement. The hose size is 3/8". Some claim this check valves helps improve boost levels too. I don't know about that and I doubt it with a stock turbo. But it does help with blow-by.








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Old 24 Apr 2019, 09:58 am
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Default Re: What Valve Breather to get for GT

Very cool...thanks for the info and pics! Would this work? https://www.harborfreight.com/38-in-...ter-68230.html
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Old 24 Apr 2019, 10:02 am
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Default Re: What Valve Breather to get for GT

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Very cool...thanks for the info and pics! Would this work? https://www.harborfreight.com/38-in-...ter-68230.html
That one would probably work. I used this one which is a little smaller:

https://www.harborfreight.com/mini-a...ter-68225.html
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Old 24 Apr 2019, 10:06 am
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Default Re: What Valve Breather to get for GT

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Originally Posted by Handy_Cruiser View Post
That one would probably work. I used this one which is a little smaller:

https://www.harborfreight.com/mini-a...ter-68225.html
Thanks for the link! Cheaper than the standard catch cans for sure Did you pick this up in the store or order it online? Wonder if this is something they keep in stock at the store?
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Last edited by shelbyzman; 24 Apr 2019 at 10:10 am.
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Old 24 Apr 2019, 08:45 pm
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Default Re: What Valve Breather to get for GT

There is no shown evidence that running a K&N air filter would reduce oil changes. Actually if pressed I can provide empirical data from oil sampled testing that disproves the BS about such MYTHs about the K&N air filter and oil changes.

Don't believe everything that is posted on the WWW.

Sorry I believe in K&N and have for over 4 decades using them without any issues what so ever on so many engines and applications that I am stilled surprised the democratic's have not included in their investigations as being false. ROLMAO
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Old 25 Apr 2019, 08:52 am
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Default Re: What Valve Breather to get for GT

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Originally Posted by Handy_Cruiser View Post
Here's the setup I had on my PT GT.
The problem with the stock setup on the turbo PT's is that all you have to prevent boost pressure from positively pressuring the crankcase during boost is the PCV valve. In many cases, it's just not up to the task.
Is this problem caused by changing out the air intake system or a problem even with the stock air boxed installed?
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Old 25 Apr 2019, 08:56 am
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Default Re: What Valve Breather to get for GT

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Originally Posted by NitroPT View Post
There is no shown evidence that running a K&N air filter would reduce oil changes. Actually if pressed I can provide empirical data from oil sampled testing that disproves the BS about such MYTHs about the K&N air filter and oil changes.

Don't believe everything that is posted on the WWW.

Sorry I believe in K&N and have for over 4 decades using them without any issues what so ever on so many engines and applications that I am stilled surprised the democratic's have not included in their investigations as being false. ROLMAO
Thanks for the info! The general consensus from my search on the PT Cruiser forum is that anything other than the stock air box is a waste of time on a GT or n/a PT and some say it is even detrimental. Not sure why that is though. Either way, I am looking forward to install my intake system
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