V2Rocket

Anybody tried modifying their AOS by installing a small filter element inside it, maybe from a shopvac or lawnmower (something small of course) to aid the oil separation, vs. just using an inline catch can?

Would a pleated paper element be too restrictive (pooling), or would a metal mesh be a better idea, if this is worthwhile?

Meine44

There have been people that eliminate the AOS completely and run with a catch can instead, but I would be very wary of sticking a piece of paper into the AOS.

If you're looking for "cheap, easy fixes" then you have the wrong car.

reno808

I deleted mine and have a catch can that being said i used to run an AOS and a Catch Can

Meine44

Have you seen any benefits to removing the catch can compared to running both in tandem?

reno808

Well the AOS delete is doing exactly what the factory AOS is doing except taking up large space. Since i have a 3in down pipe the factory AOS runs real tight where is can possibly melt the factory AOS. So i opt to go the AOS delete route.

fortysixandtwo

Instead of a small filter element (too much restriction when wet) people have used stainless scouring pad material. You just need to make sure to put a screen at the bottom to keep any rouge pieces from getting into the crank case.

Paulyy

I've been having oil passing through my catchcan so i've added some SS Steel wool in it so aid it. (haven't tried yet) I'm hoping it works. I've read a lot of positive about it, I will put a stocking or something in front so i don't suck any bits of steel in through the intake.

t3rra

Interesting idea with the stocking. Would u just put over hose and in and then hubble clip over both?

bebbetufs

Be aware that the AOS is a sentrifugal separation design. if you take a close look you will see that the inlets are ofset to spin the mix in the chamber. This slings the oil droplets outwards where they hit the wall where they cling and seep back into the sump. The lighter air and gas is more easily sucked out the middle.

This is a well known and very effective method for separating liquid from gass. If you stick anything in there make sure it does not interfere with this function or you may lose some of the effect.