RedCelica

How's dumping it? Does it fill up often?

yamahaSHO

It drains back into the oil pan. I don't have to do anything, ever.

RedCelica

Oh I had read you dont want that shit going back in as it contains all kinds of vapor including water, but hey...if your oil still looks clear after 3000 miles then there might be some falsehood in those claims.

Got a el-cheapo catch can from a guy today and installed a sheet metal baffle and plugged the top of the breather in hopes of getting at least the pcv onto a catch can setup. Unfortunately, the mounting location I had in mind didnt work out as the can is too tall. Guess I will have to find a horizontal can, such as the Greddy, to mount on the front support bar. Here were my efforts until the tragic realization.

yamahaSHO

Ideally, you should be getting it hot enough (eventually) to burn off the moisture. The color of the oil doesn't indicate its health. I've gone back and forth with whether I should drain or not, but after 4 years of it on another car and now having one on my S2000, oil sampling comes back with positive results.

I just have no desire to drain a catch can, want to retain vacuum on the crankcase, as well as keep the oil vapor from gumming up my intake/IAC/etc.

SlowTeg

And you don't have a problem with the engine ingesting oil vapors? The concern with putting vaccuum on the crankcase is it'll find its way back into the intake path. If not that's good to hear.

Also are you a big believer in keeping vaccuum on the crankcase? I've never been a believer and seen it just cause problems with oil gumming things up..?

yamahaSHO

Zero oil ingesting.

Yes, I am a believer in keeping vacuum on the crankcase, but only when oil is separated from the air.

RedCelica

If it's a closed system where is it going to "burn off" to?

Glad the samples are coming back clean. That's what counts.

Plan as of now is to go the AP2 valve cover route before the next track event in October and see how that does. Now that I recall though, I remember my AP2 blowing a huge cloud of blue smoke at the last dragon event, so even the ap2 is susceptible

yamahaSHO

The intake.

Apex1.0

This.

You want vacuum on the crankcase to evacuate excess gasses. The slight pressure drop in the crank actually can aid in combustion efficiency. Supposedly the vacuum will help the rings stay seated. Serious drag racers use crankcase evacuation pumps for this reason.

King Tut

How does it keep vacuum at WOT?