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Ok to pull the ozone generated in an ignition distributor trough the PCV system?

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ELS122:
In a car's engine distributor there's a bit of ozone generated in the distributor, there's vent holes in the distributor cap for vent this and keep it from corroding the contacts in the distributor.
But would opening up a vent from the distributor to the crankcase so it is not just vented but circulates air ok for the oil? Would the oil react with the ozone and cause problems?
   With a PCV system the crankcase is under a slight vacuum and air is circulated trough it so oil sludge doesnt form as quickly from the moisture.
The gases in the crankcase are mainly water vapor, nitrogen and CO2. And since it's a PCV system it also pulls trough fresh air so add oxygen to that mix
So would ozone be very reactive with any of those things?

John B:
Are you sure the crankcase is under vacuum? It is a positive crankcase valve afterall.

Typically in an NA vehicle its plumbed straight to the intake without check valves, with the intake being of slightly lower pressure and the crankcase being higher due to heat, and turbulence. You don't want it plumbed to anywhere else.

ELS122:

--- Quote from: John B on July 22, 2023, 09:07:42 am ---Are you sure the crankcase is under vacuum? It is a positive crankcase valve afterall.

Typically in an NA vehicle its plumbed straight to the intake without check valves, with the intake being of slightly lower pressure and the crankcase being higher due to heat, and turbulence. You don't want it plumbed to anywhere else.

--- End quote ---

That's a common misinterpretation of the term, I think whoever coined the term meant that it positively circulates, not that there's positive pressure.
And it is under a vacuum around 20-50mbar under atmospheric iirc. But in my case I'm running a much higher vacuum of around 500mbar to promote better ring seal.
The intake vacuum is around 700mbar so 0.3bar absolute, this goes to nearly 0 when you open the throttle fully.
There is an actual check valve in every PCV system that blocks a backfire traveling to the crankcase and igniting the unburnt gasoline vapors which could be present there.

Anyway, the point is I can easily get flow trough the dizzy to circulate air. I could plumb a different vacuum line separate from the PCV system but that will just turn into a vacuum line mess, so I'm wondering if it's ok to just have the tiny bit of ozone constantly flowing trough the crankcase, getting in contact with the oil.

Gyro:
Aren't you just going to suck a load of (possibly damp) outside crud into the distributor cap? What's the actual problem you're trying to solve?

John B:

--- Quote from: ELS122 on July 22, 2023, 01:36:34 pm ---
--- Quote from: John B on July 22, 2023, 09:07:42 am ---Are you sure the crankcase is under vacuum? It is a positive crankcase valve afterall.

Typically in an NA vehicle its plumbed straight to the intake without check valves, with the intake being of slightly lower pressure and the crankcase being higher due to heat, and turbulence. You don't want it plumbed to anywhere else.

--- End quote ---

That's a common misinterpretation of the term, I think whoever coined the term meant that it positively circulates, not that there's positive pressure.
And it is under a vacuum around 20-50mbar under atmospheric iirc. But in my case I'm running a much higher vacuum of around 500mbar to promote better ring seal.
The intake vacuum is around 700mbar so 0.3bar absolute, this goes to nearly 0 when you open the throttle fully.
There is an actual check valve in every PCV system that blocks a backfire traveling to the crankcase and igniting the unburnt gasoline vapors which could be present there.

Anyway, the point is I can easily get flow trough the dizzy to circulate air. I could plumb a different vacuum line separate from the PCV system but that will just turn into a vacuum line mess, so I'm wondering if it's ok to just have the tiny bit of ozone constantly flowing trough the crankcase, getting in contact with the oil.

--- End quote ---

This still isn't making any sense. If the crankcase is under vacuum with respect to the intake pressure, where is air going to in the crankcase? It's not enough pressure to bypass the ring seals.

The reverse however is true, even in a healthy engine, a small amount of combustion gases under extreme pressure bypass the ring seals, in addition to the production of oil and water vapour resulting in positive crankcase pressure.

Regardless of whether an engine is port injection, direct injection turbo NA etc, the results of PCV crud and build up are evident, and more so evident of which direction the gases and oil vapours are flowing.

Check out the intake ports of direct injection engines that have a few years of use on them, now imagine that crap in your distributor!

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