Thread: New type of BOV
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copbait73 copbait73 is offline
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Join Date: Nov 2003
Location: Chesterfield IN
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Wow, this string got lively today.

Adam, all of Goran's points are valid. I see his issue is your conclusion that the application of this BOV is "efficient". It is a compromise of efficiency to solve your problem. If the car won't run, you have a dissatisfied customer and that is reason enough to compromise but of the issue it's inefficient there is no doubt.

Just ask a CART driver who has just cranked his W/G setting too close to the series mandated pop off valve pressure. Once that valve pops power drops immediately and this happens from increased negative differential across the engine - pumping and compressor efficiency loses.

Based on your desired 24PSI manifold pressure your application is considered high performance. It's possible you are trying to use low-mid performance type hardware and techniques to tame the very high pressure spikes that are traveling back and forth in your racing engine's manifold. Could be you can relocate the sensing line and or snub their signal or better look to what Porsche and others did in this situation. If you fabricate a butterfly valve with mechanical linkage tied to the throttle you have positive mechanical, vs pressure, activation. Then you can go back to using your W/G in it's proper function.
Old 01-28-2008, 12:45 PM
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