Thread: 525i Head
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  #25  
Old 01-31-2011, 12:50 PM
robertobaggio20 robertobaggio20 is offline
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What do you mean by magnafluxing the head?

And pressure testing is something done with the head off, the head is sent to a machine shop with a pressure tester that feeds in warm water at high pressure at one end of the water jacket. The other end of the water jacket is stoppered up. Then they watch to see if water escapes from anywhere.
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