Tuesday, August 4, 2020

Project-Zero: PCV/Vacuum Manifold, Part 1

The ATR throttle bodies relocate the injectors. I made up vacuum nipple that plugs into the original injector ports in the head. This will let me make a vacuum manifold into which I can plumb the PCV.

In California, the PCV has to plumb back into the intake after the throttle bodie(s), for cars registered through SB100.

I printed test pieces in PETG (FDM process) before kicking the design up to Xometry to print in Nylon-12. (SLS process) SLS nylon should be durable/heat resistant enough.  The price per piece is shockingly reasonable.

The .STL for these injector plug vacuum nipples is available from my feed at Thingiverse. (Offered under Creative Commons Attribution-NonCommercial-ShareAlike license.)


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