hey ive been porting the outlets on my turbo head...i found a water jaket !(*i wasnt nearly as excited as i sound)... i guess i found what "too far" means...anyways i made a small hole and decided patch it up with my arc welder..well i coverd the hole pretty well and grinded it down so its only a small lump(pretty much less of an obstruction that what i already took out). I was wondering how u know what is too "thin" of a vavle wall when porting. I mean i have it down pretty good in a few spaces now that i look at it, how thick should it be to hold? basicly any good porting ideas/opinion/tips would be welcome. This is not first time porting, just my first time making my 5th exhuast port hole