I asked this question over at the 145 forum (referring to http://forum.alfa145.com/
) and could not get a straight answer, what makes it worse is that between the engineers who decked the block and other sources of information / asking around I get conflicting answers. So here's the question, hope any of you can help:
I had my 145's block slightly skimmed / decked by engineering as part of some of the work I had done on the block (It was not my instruction to them, they found it required to skim it)
Question is, sub assembly now done, and with the pistons at TDC they aren't 100% flush with the block anymore, I know the head gasket will take up some of it but the head will obviously be torqued down properly, so the question really is, should I have the same amount taken off the piston crowns or can I proceed with the assembly ?
I seem to have in the region of 0.6 mm worth of piston crown above the block deck at TDC.
Engineer said I need to get a "composite" head gasket but as far as I can see, the head gasket I got with the full Victor Reinz set is a "composite" gasket.
I was given the advice to torque down the head, set valve timing and check for contact by rotating by hand, but I've spent too much cash and time thus far to have to undo an assembly due to piston / head / valve contact issues. Just got the head back from engineering, it too got skimmed.
All in all I don’t feel comfortable with using a standard thickness gasket and I have no idea if thicker ones are available ?
Please, any guidance will be much appreciated. I checked all the technical data I could get my hands on, deck height tolerances for the 2.0 I could not find, on the diesel engines there's allot of info on thicker gaskets vs. deck height + piston protrusion ext, but on the 2.0I can’t find anything.