Cylinder Head questions

[Tuggertim]

Running into a bit of an issue with, what what I thought was, a simple rebuild. As with all things, never as "simple" as hoped. 1984 Pininfarina Spider 2000.

I sent the head to the machine shop for a head job. Lo and behold the aluminum head needed to be milled . I discussed this with the shop owner and we decided to mill no more than 2 thousandths (0.002") off the head, if needed. The machinist ended up taking 12 thousandths (0.012") off. This was a unmilled bone stock head. I have new 85mm 8.8 compression crown top pistons I'm planning on installing and the block had already been over-bored. I'm not searching for hugh compression or HP gains, just a reliable weekend car.

Can anyone tell me if 1.) What is the maximum a 1995cc FI head can be milled 2.) Is the milled head is going to cause interference with the valves 3.) Is there a oversized head gasket that can work (+ 0.010" or larger) 4.) If I can use a standard head gasket and no interference issues, how can/will this effect cam timing?

Anyone with any suggestions/help will be blessed with good karma

[So Cal Mark]

Fiat had a factory tool for measuring head thickness, it fit into the combustion chamber with a step to measure the deck height. I doubt that 012 would make the head too thin. I do have 080 head gaskets in my store for use with milled heads.