Crankcase Data Logging on Track

Taking theory to the race track

If you saw the last blog post (below and to the right), then you know we’ve already confirmed that turbo inlet pipes can absolutely break the OEM PCV valve’s ability to function correctly. So naturally we put the “worst” turbo inlet pipe on to see what the effects were in Basic vs Full retrofit form.

As a reminder: Basic retrofit is functionally identical to any OEM MK7 valve as far as the diaphragm is concerned. The main difference when adding the Venturi is that it supplies a more consistent vacuum source, which results in a stable crankcase and the diaphragm can close - keeping oil down in the bottom end where it belongs.

Visualizing what is going on in the above video should really help illustrate what’s going on dynamically. The prior 2nd and 3rd gear pulls for “standardized” testing were just that… standardized tests to control variables. Seeing what is actually happening on track is really neat, and there was even one instance where I think we captured the oil sloshing phenomenon, noted at the 5:56 mark.

I was honestly just glad that my crankcase sensor didn’t melt or have anything stupid like that happen.