Air/Oil Separator Filling Up Too Fast
01-08-2018, 10:54 PM
#21
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So right no on my VVT motor i have a -10 fitting welded about 2" back from the oil fill and one where the pcv was. If i cap the pcv and run the hose from the top of the cover to the can then back into the pan i should be good. Where should i send the oil back into the pan since im welding oil pan drain fittings right now on the bench.
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01-08-2018, 11:49 PM
#24
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Nope. Drain it below oil level or you've just created another large orifice for blowby to escape, and no oil will actually drain. The drain needs to be submerged in oil at all times (even under high cornering loads), or you need to run a check valve to prevent blowby flowing up the drain when the oil sloshes in the pan. The MSM does the former, I do the latter on my AOS installs.
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01-09-2018, 01:01 AM
#27
Just to clarify, i plumb the drivers side valve cover port to the vented catch can, and then to the port on intake pipe. Is that correct?
And the intake manifold tube gets capped as wrll as the pcv valve port?
Im very dumb, and i just want to make sure Im understanding this.
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01-09-2018, 09:22 AM
#29
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I think the problem is the hole from the middle baffle to the pcv side. If the oil condensate in the pcv baffle it cant run backwards because the aslope hole and the rtv seal to the bottom. The only way out is through the pcv port. My idea is to run rtv not all the way but steel wool in the baffles. I will post some pics tomorrow in my build thread
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01-09-2018, 10:13 AM
#31
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I too have a copper scrubby in my AOS, but what we are talking about is actually fitting scrubby into the baffled area for the PCV on the valve cover
on that note, perhaps the escort or protege valve covers offer a more optimized design? Does anybody know if the baffling on the other valve covers are any better?
on that note, perhaps the escort or protege valve covers offer a more optimized design? Does anybody know if the baffling on the other valve covers are any better?
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01-09-2018, 10:39 AM
#32
I too have a copper scrubby in my AOS, but what we are talking about is actually fitting scrubby into the baffled area for the PCV on the valve cover
on that note, perhaps the escort or protege valve covers offer a more optimized design? Does anybody know if the baffling on the other valve covers are any better?
on that note, perhaps the escort or protege valve covers offer a more optimized design? Does anybody know if the baffling on the other valve covers are any better?
Sav is one of the best if not the best turbo miata engine builder. He know what he is talking about and straight up said in the thread the proper way to catch can.
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01-09-2018, 12:36 PM
#34
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Heres a photo of the setup. I added the breather to the top of the AOS. Still no scrubby in the valve cover. Going to test for 100 miles and report back. I suspect it won't fill up nearly as fast, although still not ideal.
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01-09-2018, 01:04 PM
#37
"cap the pcv valve port" proceeds to keep it connected...
i literally got up this morning, and drove to napa for caps.
You will still get the same amount of oil, since you arentsupposed to connect that side (not sure why, but more knowledgeable people told me to do it)
i literally got up this morning, and drove to napa for caps.
You will still get the same amount of oil, since you arentsupposed to connect that side (not sure why, but more knowledgeable people told me to do it)
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01-09-2018, 01:56 PM
#38
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I was at the track with someone who had a turbo car, '99 head/VC, and both VC ports routed to a catch can. They were having issues with the can filling up. I told them to cut the hose between the PCV and the catch can and stick a bolt in each end. They did it, suddenly their catch can was not filling with oil.
Must have been a coincidence.
Must have been a coincidence.
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01-09-2018, 02:14 PM
#40
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Sigh.. so much upset for wanting to collect data! As previously stated, I'm not arguing against Sav, and have graciously thanked him and whoever else has done the previous research into this. Cool your jets!
as for my plan and intention for replying.. i will go with the photographed setup for 100 miles to see how it compares to before, the same without a catch can breather. Anyone wanna bet it has the exact same? More? Less?
after 100 miles, ill just cap the PCV port. Ill run it with the can vented and measure. Then remove the filter and run it sealed to the turbo inlet and measure. Not that i expect to find contradictory information, its just numbers for the books so I cam better make sense of things.
sorry for not blindly accepting what others say, a questioning skeptical mind you could say
as for my plan and intention for replying.. i will go with the photographed setup for 100 miles to see how it compares to before, the same without a catch can breather. Anyone wanna bet it has the exact same? More? Less?
after 100 miles, ill just cap the PCV port. Ill run it with the can vented and measure. Then remove the filter and run it sealed to the turbo inlet and measure. Not that i expect to find contradictory information, its just numbers for the books so I cam better make sense of things.
sorry for not blindly accepting what others say, a questioning skeptical mind you could say
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