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
Topic: 1.9 AAZ Head Gasket question (Read 1964 times)
