head skimming

[nova_172]

getting my 1.2 spi head skimmed as i cant fit a carbed head yet whats a safe amount.
thanks

[m.d.]

40 thou is a good ammount. thats what i have done and ive got 11 to 1 compression

[Stuart]

eek lol ive had 1.75mm (approx) off lol and the blocks been decked. hmmmmmm 12.5:1 tastic lmao

acctually ill work it out propoerly once the head is assembled