The deezums Catch Can
#61
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But wait, just the fact that there is evidence of some leakage doesn't mean it's no good. He blew on that thing for some period of time, and the total space involved was virtually none, so my guess is that an entire crankcase volume would see next to nothing from a boost event lasting the time it takes to go through a few gears, no? ![Dunno](https://www.miataturbo.net/images/smilies/dunno.gif)
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Aiden drives a lot harder than I do, and breaks more things.
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#63
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leaving this here
https://www.miataturbo.net/diy-turbo...re-test-80353/
and ignoring the retarded check valve conversation
https://www.miataturbo.net/diy-turbo...re-test-80353/
and ignoring the retarded check valve conversation
#65
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<p>I would hope that I could apply more pressure than that.</p><p>Should I hook up my 2k psi of argon to it?</p><p>I was thinking about adding a nipple to my oil cap and running a dedicated map sensor for it so I could log on the megasquirt.</p><p>tommy im gonna have to side with pat on this one. check valve > pcv.</p><p>I also realized that because this closes under boost it will work for my boring stock 1.6 all the way up to a big high boost build.</p><p>You just need to vent the other side properly.</p>
#66
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bbundy puts a crank vent in his car to help with blowby blowing oil trying to return in the drains back up and into the head, causing oil to pool and in turn causing it to get sucked out the PCV side port because the drain and air channel hole by the baffle is literally in the back corner, I mean really Mazda? Ya couldn't put a small baffle chamber in the middle and put the port up there? Would avoid half of all of this problem.
There's a raised drain hole in that back corner that's supposedly for crank pressure to return bypassing the oil return; it's offset a quarter inch in my head inboard, about 2" down, I'm guessing to make room for something else in the casting, but otherwise is 1/2" in diameter.
![](https://www.miataturbo.net/attachments/engine-performance-56/148490-deezums-catch-can-80-148029_forever_project_58934d1351912632_should_i_drill_hole_my_engine_block_p1010007_d58912d5.jpg?dateline=1441176892)
Oh, Aidan. Next time you pull your VC just drill the hole connecting the middle baffle chamber to the exhaust side port. It's only a 1/4" hole that I drilled in small steps up to 29/64" which should be plenty large enough for what's needed to vent.
There's a raised drain hole in that back corner that's supposedly for crank pressure to return bypassing the oil return; it's offset a quarter inch in my head inboard, about 2" down, I'm guessing to make room for something else in the casting, but otherwise is 1/2" in diameter.
![](https://www.miataturbo.net/attachments/engine-performance-56/148490-deezums-catch-can-80-148029_forever_project_58934d1351912632_should_i_drill_hole_my_engine_block_p1010007_d58912d5.jpg?dateline=1441176892)
Oh, Aidan. Next time you pull your VC just drill the hole connecting the middle baffle chamber to the exhaust side port. It's only a 1/4" hole that I drilled in small steps up to 29/64" which should be plenty large enough for what's needed to vent.
#67
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Im not worried about the drilling. I just don't want to pull my valve cover.
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<br />Next engine will probably have all those holes drilled out, and some fat hose on the exhaust side, maybe a slashcut to the downpipe.
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<br />Next engine will probably have all those holes drilled out, and some fat hose on the exhaust side, maybe a slashcut to the downpipe.
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You say you have a problem with puffs of smoke, yet you say slashcut? We all know those make smoke, right?
I also don't see how Bob's setup like above could puff smoke, doesn't look like he vents the can to the intake manifold at all. Are you sure he wasn't just filling the can?
Bob has no need of PCV, he is in boost more often than not. I can't imagine him using PCV.
I also don't see how Bob's setup like above could puff smoke, doesn't look like he vents the can to the intake manifold at all. Are you sure he wasn't just filling the can?
Bob has no need of PCV, he is in boost more often than not. I can't imagine him using PCV.
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The slashcut was pulling oil up from the catch can. And I mean PUFFS of smoke
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<br />Slash cut is to pit vacuum on the crankcase while under load.
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<br />Slash cut is to pit vacuum on the crankcase while under load.
#72
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You say you have a problem with puffs of smoke, yet you say slashcut? We all know those make smoke, right?
I also don't see how Bob's setup like above could puff smoke, doesn't look like he vents the can to the intake manifold at all. Are you sure he wasn't just filling the can?
Bob has no need of PCV, he is in boost more often than not. I can't imagine him using PCV.
I also don't see how Bob's setup like above could puff smoke, doesn't look like he vents the can to the intake manifold at all. Are you sure he wasn't just filling the can?
Bob has no need of PCV, he is in boost more often than not. I can't imagine him using PCV.
#76
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a check valve is one way only.
also: do a leakdown test.
Last edited by Braineack; 09-04-2015 at 11:40 AM.
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I ordered 2 this morning, and 3 check valves, ill let you gheys know how it works.