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#21
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I found this which I found to be a pretty good document concerning PCV and crankcase ventilation. A good read. >
https://speedtechperformance.com/wp-...entilation.pdf
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There are no problems..only solutions. |
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#22
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The motor in my 64 was modified by the po. So, I purchased a pcv from ME Wagner. I do believe it works. Wasn't cheap. Slowed down oil leaks. And from a dead stop the car acceleration is better. It feels smoother. With a modified engine, finding the right valve to work may be difficult. Look them up, see if you think it's worth the time, and $$. Hope this helps.
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#23
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Thanks again for the informative answers. Mine is an engine that is raced and regularly driven on the street. I will replace one of the valve cover breathers with a PCV connected to the inlet vacuum and see if it helps with the silly little drippy leaks.
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#24
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Well-written article.
His engine data: 6.4L engine 3 cfm of airflow in right where it should be. Average 6.5 liter to 7.5 liter would need that additional 1 cfm of air flow as far as crankcase pressure removal and corrosive gas removal (to be burned). Thanks Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#25
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Does it actually state the CFM of a PCV when ordering? I can't see it mentioned anywhere.
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#26
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I had enough dealing with PVC’s and got a vacuum pump….problem solved
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#27
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JL -
Can you share your mounting setup for the MightyMouse can? Did you use one of theirs and if so which one? Thanks.
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There are no problems..only solutions. |
#28
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I used one of their universal mounting types and I have it attached to one of the posts on my torker II intake manifold. It does okay, but I'm not thrilled with how I mounted it. I may try and get it on the firewall at some point because I have to capture it towards the bottom of the can currently and it vibrates a bit.
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-Jason 1969 Pontiac Firebird |
#29
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Quote:
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#30
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I don’t think it matters as long as the PCV system has a good, clean fresh air source and that could be either valve cover. The factory used the passenger side. Since the valve covers would be more prone to sucking oil vs. a factory valley cover PCV valve location, a catch can might be in order to keep the dirty side air clean at the manifold.
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There are no problems..only solutions. Last edited by mklinger; 01-27-2023 at 09:43 AM. |
#31
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Thank you again for the information.
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#32
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I think there is a preferred side for the PCV; but I also suspect there's not a huge difference.
Has to do with the direction of crank rotation, which affects the direction of windage, which may/may not affect the amount of oil mist pulled up to the valve cover. |
#33
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Quote:
FWIW
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"No replacement for displacement!" GTOAA--https://www.gtoaa.org/ |
#34
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Updated CCV / PCV
Ok, so after a lot of research and thought, here’s where I settled on updating the PCV and CCV on the car.
#10’s from both valve covers to clean air source between air filter and throttle body. Eliminate the PCV valve, sourced a 1/2” barb to #8 male adapter at the valley cover. Installed a Mighty Mouse PCV can. #8 from valley cover to MM. #6 from MM to PCV port on throttle body. The car has a Fitech, I did have to tweak the IAC but beyond that no issues. Thoughts and opinions on this setup welcome.
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There are no problems..only solutions. |
#35
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Quote:
There's a PCV valve (or at least a restriction) in the "Mighty Mouse PCV can"? The Mighty Mouse web site talks about a "PCV can", but I can't find that product on the site. All I see is "Draft cans". IF (big IF) you have unrestricted flow through your Dash 6 hose into the PCV port on the throttle body, I can see why you needed to "tweak" the IAC valve. I can't figure out why the Mighty Mouse can has a filter on top. Are crankcase fumes are being vented out that filter? You've already got a fresh-air inlet to the engine via the connection between the engine air filter and throttle body, to BOTH valve covers via Dash 10 hose. The Mighty Mouse filter is not for air inlet. And excess crankcase fumes beyond what the PCV system can handle would be vented from valve covers to the air cleaner via your Dash Ten hoses. So I have no idea what the Mighty Mouse filter is supposed to accomplish. Last edited by Schurkey; 02-05-2023 at 07:56 PM. |
#36
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Quote:
If the guy feels better at the end of the day buying the "complex" system vs the factory engineered systems that has been around since the early 60s, go for it. It is his money BUT personally I have to totally agree with Schurkey that a $20 FACTORY system would work just as well with a less complex group of parts. Usually if the Factory Parts do not work you have OTHER internal Engine issues. Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#37
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That does look a bit complicated with a lot of plumbing.
I've had no issue running a proper pcv in 600+HP engines. As mentioned if using a valve cover for a pcv, the pcv is placed in the driver side valve cover in a typical V8 due to crank rotation. If it's oil contamination in the combustion process you're looking to eliminate all you need is a simple small air/oil separator can plumbed in to the pcv hose. That's what we did on LS engines years ago because they were bad for sucking oil through the pcv, even when the cars were brand new. Or maybe it's just time for a vacuum pump |
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#38
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Hey, my wife says I overthink everything so this was no exception.
Here’s the link to the PCV can. https://www.mightymousesolutions.com...t-page/pcv-can I think we can agree a catch can is a good idea. In this case, that can is designed like a fixed orifice valve. It is well engineered internally. Regarding the IAC step adjustment, it was minor. On installation, hot idle went to 1-2 steps, I adjusted back to 5-7. I probably could have left it alone. Do I think I’ll have any excess crankcase pressure? Nope. Is it overkill? Ubetcha.
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#39
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I just generally lean towards a small air/oil separator because they are small and easier to conceal, and allows me to keep the PCV setup in place for a factory appearance. But I do see a lot of hot N/A street cars that are more setup for race than street with roll cages, gutted interior and big stroker engines that do have pretty elaborate crank case vent setups. In that case I wouldn't be too concerned about hiding anything, lol. |
#40
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I don't fully understand the air filter on top of the catch can scenario. Surely, if there's air able to get in there it illiminates the vacuum
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