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Engine Specific Info and Questions => IDI Engine => Topic started by: starrd on February 11, 2008, 09:05:08 pm
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Just measured my piston protusion on my 1.9 AAZ build and it is 0.026", which I know requires a 1 notch head gasket. My question is, do people use other than the factory settings to lower compression slightly? I am going to be running 18 PSI boost, K24 turbo, giles pump, intercooler and 2 1/2" downpipe. I know this affects the squish, but I want to make sure I order the right one. Any opinions or suggestions are welcome. Thanks