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Stock BPV measurements


bugblatterbeast

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During the process of debugging a boost control issue I made some measurements of the stock BPV. Here are the stats:

 

valve preload 23.4 lbs

valve diameter 1 inch

actuator diameter ~2 inches (had to estimate this one as I'm not near the office where I could x-ray the thing)

 

assuming no pressure loss between the BPV location and the spot where the skinny hose is connected, the cracking pressure is 29.8psi

 

assuming 1 psi drop between the two locations the cracking pressure is 25.8 psi

 

with the pressure reference line disconnected, the cracking pressure is 5.96 psi

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