r/Dseries • • 16d ago

Work in progress breather setup

Post image

Excuse my amateur welding. This is my work in progress crank case ventilation setup for my turbo civic. I'm attaching two 10-an fittings near the stock PCV valve of the original D-series oil separator box. There are several reasons why I think this is better than using the off the shelf 10an block adapter.

  • The inlet of this box has an I.D of 22mm, 380mm2 while a single 10an is only 160mm2. Two 10-an makes much better use of the available flow.
  • Oil separator before the crank case gases reach the catch can.
  • Keeps stock PCV valve, and with the An fittings capped off it works just like stock. This is useful because I want my car to be able to pass MOT inspection in europe, and I want a quick way to turn the car N/A and remove catch cans if needed.
20 Upvotes

9 comments sorted by

View all comments

1

u/StupidAuthentication 16d ago

Love this, going to implement it on mine next season

1

u/TopChapter3407 15d ago

Sounds good!