1mm OS so I have to send the head back in for machine work, I have no issues with that...
My query is this: Are these valves usable on my G54 head? I can't remember, but I think they are either long or short valves, just not sure if that is any kind of issue or if it just means setting up the valve train a bit differently?
I have the stem length off these valves, but not sure what stock for my engine were (though I could probably find it easily enough)
And, Hell, while I am at it. Going with the Hydro rollers, the OS valves, and a ground cam...should I go with heavier springs?