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Old 09-01-2015, 06:21 PM   #21
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Argh! I feel like I'm talking to pat!

If it opens easier than the PCV, what exactly is it doing? Are you sure you don't lift the dipstick because of the restricted PCV flow of the check valve?

If you can't blow through this PCV valve and make it leak past, your turbo at boost will not be able to either. It is a check valve by nature, it is specifically designed to do what it does and it works, it's at the auto parts store right now for less than $3 and it works. Did I mention it works?
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Old 09-01-2015, 06:26 PM   #22
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<p>I bought that one.</p><p>Dipstick popped.</p><p>I bought check valve.</p><p>Dipstick never popped.</p><p>I mean it opens easier under vacuum. Under boost no open.</p>
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Old 09-01-2015, 06:27 PM   #23
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<p>Did i mention my dipstick didnt pop after installing it? </p>
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Old 09-01-2015, 06:33 PM   #24
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Then it had to of miserably failed the mouth test, and you must have had one with raised stamped plunger or something.
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Old 09-01-2015, 06:34 PM   #25
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<p>I sucked on that bitch as hard as I suck on your mammas *******, and she wouldn't open.</p><p>They both work.</p>
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Old 09-01-2015, 06:34 PM   #26
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<p>Look at it this way.</p><p>A PCV opens under vacuum and (supposedly) seals under boost.</p><p>Mine is broken into 2 parts.</p><p>Check valve seals against boost. PCV opens under vacuum.</p>
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Old 09-01-2015, 06:47 PM   #27
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Why are you sucking? You aren't supposed to suck, turbo's don't suck.

Look at it this way, your PCV valve was defective? You had a stuck ring, you ran into overboost unnecessarily hard, I don't know what you did. Since I replaced OEM with this valve I have no problems. Adding a check valve if you have no problems is silly. Go to the auto parts store and try this, if it don't work, enlarge valve cover ports as you should have already. If it still lifts, check valve? That's what I'm saying, don't fix **** with patches.

One thing I do know is that a PCV valve seals under boost, and you test that by blowing the shaft like a true miata owner.
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Old 09-01-2015, 06:50 PM   #28
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<p>Maybe I blew, i dont remember. I bout the one that you found. Because we had the same dipstick problem at the same time.</p><p>Enlarge which ports?</p><p>What I'm saying is that the valve worked for you and not for me. Maybe you got a magic one, idk.</p><p>When I ditch this motor everything will be rebuilt from scratch, so this will stay.</p>
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Old 09-01-2015, 06:54 PM   #29
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You are trying to make a place for blowby to go, or any stray boost that might push through before the valve snaps shut.

Did you look at the link I posted on the last page?

https://www.miataturbo.net/diy-turbo...re-test-80353/

This is quality **** here, and applies to all miata. We have more crankcase flow volume with more power, it only makes sense that we need larger port diameters to keep the same pressures.

Consequently, I don't think I will enlarge the PCV side. It only functions when not in boost, or OEM levels of power. I don't want to enlarge it too much, because too much is a real thing. The exhaust port is fair game if you leave the PCV port alone, or so my reasoning goes.

And if I got a lucky PCV valve I'd like to know for sure, more test points are good but only if we are looking for the same things.
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Old 09-01-2015, 06:58 PM   #30
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<p>Did not enlarge holes. Do not feel like pulling valve cover.</p><p>How bout this.</p><p><strong>For all people following this guide:</strong></p><p><strong>The correct way to do this is to use a PCV valve that works.</strong></p><p>I'm lazy and put in a check valve I found on ebay.</p><p><strong>Do it the right way, don't be me.</strong></p><p>Better?</p>
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Old 09-01-2015, 07:04 PM   #31
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Yes, and please post results if the valve I posted fails miserably for you. It is a $3 pcv valve and might not be the same from batch to batch.
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Old 09-01-2015, 07:08 PM   #32
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<p>Bruh, i've said it like 3 times now. The valve you posted failed miserably for me. Which is why I now have a check valve.</p>
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Old 09-01-2015, 07:15 PM   #33
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<p>Ugh, re-read that thread and now I want to pull the valve cover. But I just got it to stop leaking.</p>
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Old 09-01-2015, 07:16 PM   #34
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You say you don't remember what you did, didn't even take it apart to see why it won't seal, don't even remember what you did to initially test it.

No data point for you, sorry!
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Old 09-01-2015, 07:17 PM   #35
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<p>Data point is I bought the one you told me to and my dispstick still poped its cherry.</p><p>I have it all torn apart right now, I'll check when I get home.</p>
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Old 09-01-2015, 07:20 PM   #36
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I bet there is a point where crank pressure can equal boost pressure, in which case extra resistance in the PCV line might save yo dipstick cherry.

Reintroducing the pressure differential by enlarging the exhaust cover port might get you back to just using this valve, unless of course the plunger is different and it can't ever seal even on a good day.

Or so my thoughts go, something else must be wrong, ya know?
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Old 09-01-2015, 07:22 PM   #37
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<p>I would drill out the exhaust cover port. Except this is the first time I have gotten my valve cover not to leak, and don't want to **** it up.</p><p>By all means my PCV valve might be different. I'm just saying that a check valve works every time. And isn't dependent on which chinese manufacturer vatozone bought from that week.</p><p>I'll take pictures tonight.</p><p>And go get a new one from autozone to compare.</p>
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Old 09-01-2015, 07:23 PM   #38
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Crankcase pressure should be wayyy wayyy lower than boost pressure.

And your dip stick should not be popping out, if it is, something is wrong.
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Old 09-01-2015, 07:23 PM   #39
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<p>GUISE, MY DIPSTICK IS NOT POPPING ANYMORE.</p>
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Old 09-01-2015, 07:25 PM   #40
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Why does your valve cover leak? Mine doesn't, and I don't even think I have RTV on it any longer. Did it get chewed up, or do you have astronomical crankcase pressure blowing it out?
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