I know this has been beat like a dead horse but, Were do most guys set there timing I see alot of people who talk about 15* but is that reasonable and the best for overall engine life ect. The I. D. tag on my engine calls for 12. 5* is it all the better to go to 13. 5 or 14 * And what are the perils with going to the 15* point obviousely head gasket issues but I am looking for all the advise i can get. My main objective is engine longevity economy and useability. Thanks Turbine Dude