Originally Posted by 3rdGteg
If your head is milled anymore than .012", it is most likely your cam timing. For every 12 thousands of an inch milled, it will retard your cam timing by 1 degree. I repeat, you will need to compensate your cam timing if your head is milled unless it's really minute...then again, if it's that minimal, your compression wouldn't be so high.
Just curious, did you guys open up the valve reliefs on your stock pistons at all? The reason I ask is because with your head being milled and all, may cause piston-to-valve contact (also depending how much was taken off the head).
Im gonna call them up today and ask. I dought it was much because I asked him about shaving it down some and he said There is no need if keeping gsr cams. The pistons are stock and nothing is done to them. I took the head off when I did the headgasket after it being on for 3 months and nothing looked outta place with the valves. I should Have pored some alcahole on the top of the head to see if it was leaking but there really was nothing outta place. Im gonna recheck the timing this weekend but Im almost 100% sure it's on tight. It's brand new and so is the water pump. Ehh lets see what happends. Im gonna order another gsr fuel regulator to see if it boosts up the pressure.