SPLIT VERSION of the

Saikou Michi Dual Chamber Catch Can *Evolvd*

(now lighter construction,and all-aluminum welded fittings)

**July 2007**

Finally! The arrival of a oil catch can system designed to DO SOMETHING!

Let's keep it simple. Boosted engines need to keep oil out of the turbo, intercooler, and intake manifold. A catch can can do this...that is if it is actually designed to work the way it is supposed to.

Oil travels out of the valve cover in vapor form, not liquid, so why do the big name companies sell catch cans that work like overflow reservoirs?

The DC3 is designed to interrupt the flow of oil vapor enough so that it condenses inside, and minimizes the traces of oil can go where you don't want it to.

TAKE A PEEK INSIDE

The incoming line has a vapor snorkel that keeps the incoming vapor far away from the exit fitting. The incoming vapor must travel through a maze of stainless mesh before it has a chance of exiting. This creates condensation, and the oil vapor changes into oil drops which will just sink to the bottom of each chamber in the DC3.

So, why 2 chambers ? Why not join the breather and the PCV line into 1 can?

The simplest way to explain it is this... The PCV system works in ONE direction. Under vacuum the flow comes from the valve cover through the PCV valve and into the intake manifold, during this time, the air that is being sucked out is being replaced by the air coming in through the breather hose. Air comes in, and air goes out through the PCV line. When 2 lines go into 1 can, there is NO VACUUM effect possible.

So, why does the breather need a can if the flow only goes in one direction?

Under normal conditions this may be true...but under extreme boost, the breather line may experience a strong vacuum effect and actually cause the PCV valve to leak, allowing oil vapor to be sucked into the turbine and the intercooler which reduces it's efficiency.