Skimming head on 1.4 micra problem

[Karl The Kid #199]

Hello,
I have my 1.4 engine in the car and was wondering what is the max you can skim a head in a 1.4 micra? because I also need to advance the timing when I do that, to match but I think the timing only stretches to a certain point? (Need all this done before next Saturday) so information needed asap!
Thanks Karl

 

[frank]

2.5mm karl, but it makes the lower chain pretty slack tho, and you can re-position the idler to advance the cams

 

[Karl The Kid #199]

2.5mm? so around 60 tho in skimming terms?

 

[frank]

100

 

[Clement]

Be careful to the valve/piston clearence!
1.5mm for the inlet and 2mm for the exhaust. The clearence is in fonction of the cam timing.
Sometime the head gasket may be on the valve way aswell.
It's probably fine for this engine, but it's better to check.
Good luck