Quote:
Originally Posted by Kevin Johnson
The problem (with race engines) is the consistency of the vacuum. The genesis of the difficulty will vary depending on whether you have intake induced vacuum or exhaust induced vacuum. Either way will yield an expensive blown engine under the right circumstances or possibly just banned from the track for fogging everyone with oil. Driving at a constant speed and engine rpm is another matter.
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I had an idea that a vacuum regulator would do the trick of keeping vacuum at a steady level. The simple addition of a pair of pcv valves should allow blowby gasses to vent and act as a check valve, a variable restrictor will be necessary as well.