Is it possible that your return oil line is pinched, kinked, or plugged somehow ?......After these emails i pulled off the bottom port pipe of the Crawford unit that should send this oil back to the motor and DAM - WTF , Loads of oil came spilling out. The oil is not getting back into the engine port as designed......
I Checked the lines and they all look ok. Is there any kind of filter going back into the crankcase.?Is it possible that your return oil line is pinched, kinked, or plugged somehow ?
Oil should flow back to the engine via gravity.....especially when the engine is off...
I don't know of any AOS units out there that use a filter in the drain.I Checked the lines and they all look ok. Is there any kind of filter going back into the crankcase.?
Ok Noted for the filter.I don't know of any AOS units out there that use a filter in the drain.
I would definitely check for a clog. You can do this by ̶p̶u̶n̶c̶h̶i̶n̶g̶ pinching all the lines except for the drain, and apply compressed air pressure to the oil fill. Remove the AOS line that would go to the turbo inlet and make sure you have decent unrestricted flow. I would apply ~15psi to start off.
Now there is a possibility that they're not pulling out fast enough from the crankcase but why to the exhaust.? And that also doesn't explain the oil build up in AOS as oil should still be draining back into the blockYour lack of vacuum may be the issue.
Route the vapors to the exhaust using vacuum. I plan to try this on my NA rally car to start.
Looks like it works looking at their website but would this also send oil into the exhaust and thus block up the silencers over time.?Thee valve is meant to keep positive pressure going the other way, thus preventing your AOS from pushing gasses out of the top as you said. Maybe you are missing it and need it.
Also, you said you do not want to plum the oil vapors back to the intake. So the other option is the exhaust, using a E-Vac scavenger kit, Vibrant performance makes them. Part number (VIB 1189)
All of the above. Testing was done for over a year on three cars 2005 STi (600-760whp), 2012 STi (stock block to 450-600whp on flex) and 2015 WRX FA, stock to KBM turbo kit. So a few different power levels on each car, with them all seeing daily driving and events play.No Problems on fully tested daily road use many boost scenarios or track use only.?