!TWISTER! Posted April 17, 2007 Report Posted April 17, 2007 Why would having you head milled or modified cause the piston to hit the head? I guess if someone cuts the head and does not know what they are doing, that might happen. My head with the velocity vanes does not cause any problems and has never hit a piston. The goal is to prevent the problem. I didn't said i will happend, just in case. Quote
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