Hi guys,

My buddy has a B18C1 EK track car and we are having some issue with oil blow by.
The symptom is that after a track session (road race), the catch can fill up quite abit.
We did a test by blasting the car on the road (no turns), and this does not fill up the catch can, so we figure it's probably not the rings.

Currently the motor has 2 -10AN ports on the valve cover, and 2 ports in the back of the motor going into a vented catch can.

Does anyone else have experience with B18C1 track car? I'm wondering if there's anything can be done in the valve cover to solve this issue.

Please, we are only looking for info from someone with experience of this issue.

 

Are the two ports on the back the large threaded locations? If so plug them back up and just use the valve cover fittings. The ports in the back will carry oil draining from the cyl head and fill catch cans up all the time.

 

but the catch can is higher than those 2 ports in the back of the block, how can it go back up to the catch can?

also the endyn breather tank also routes those 2 ports into a vented catch can

http://www.kvien.no/integra/html/mod...structions.jpg

 

The forces of the car accelerating forward, the vapor flow carries the oil draining from the head. It’s a known problem, doesnt matter what catch can setup uses it or not. I personally tried this on my car and a handful of others and gave up. You can run a lower fitting on the catch can to drain it back at low loads but then you get all the condensate and other crap that collects back into the engine.

 

We found using a one way turbo check valve from a s80 volvo as part of a PCV system solved the issue. The rubber hose would go between the valve cover nipple and the intake manifold, with the check valve in-line, so that the vapors would get the vacuum to push down and out through the can , but not allow crankcase pressure to push oil residue into the Intake manifold.

No -10ANs anywhere on the valve cover itself. We found it to be a cleaner system overall.

 

i think im misunderstanding what your saying?...so you were running a line from the valve cover directly to the manifold with a check valve? im working on my venting now so im curious to hear more about that idea.

 

Correct. I run a standard "drain-back" style catch can using two main freeze plug adapters, and the black/canister port adapter as the drainback point. On top I use NO -10AN fittings (those were used in drag racing years ago just to show TECH inspectors at the drag strip that they can vent the same amount (in volume) in a large canister as the displacement of the car itself. That is why you see the super large canisters that replace the battery in many engines). and a 0.5" hose from the valvecover nipple to the intake manifold, similar to how the original PCV hose was set. But in between I use an S80 Volvo booster check valve (white side facing the valve cover). Below are some images of when I was setting it up on another car. The Filter hadn't been placed on the canister at the time of the photo.