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Re: [T3] Distributor and breather box questions


<x-flowed>True for a stock engine but hi-perf engines don't always follow the rules. What has constantly been told to me is that a bigger engine produces more case pressure (due to blow-by? I dunno) and thus the valve cover vents actually move air out and towards the breather. Honestly, I haven't been given solid evidence either way so I'm not sure myself. I would think that the case breather itself, vented to a carb, would *seem* to be enough to reduce pressures in the case in a big engine but I don't know how I would go about performing such tests. Tap the case with a fitting and attach a pressure gauge? Then start experimenting?

 Toby Erkson  --  http://www.icbm.org/
 '72 VW Squareback Darksider, 5-speed, 2.0L, rag top
 '72 VW Squareback Lightsider, automatic, FI, sunroof, gas heater
 '95 VW Jetta ~ SCCA Solo 2 EP #3; '73 Porsche 914; '81 Honda Gold Wing
 Portland, Oregon


joshua brooks wrote:

One problem with adding the vents to the heads is that most people don't understand that the 72-73 vents were part of the PCV SYSTEM. They aren't actually outlet vents but inlet vents...


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