EgSalad

iTrader: (1)

Heres a little background on this situation.. I am thinking about picking up a b18c1 head for my personal use (on a b18c1 block). The current owner said the head has been milled 26thousanths. He has an aftermarket 4 layer headgasket if I want it along with the head... I believe he said this will drop add about 12thousanths... but I am not sure.

How much can a b18c1 head be milled, safely?
Likely to make piston to valve contact if over reved?
What would be the CR be if I used a stock headgasket (and stock pistons)?
Has anybody had an experience with a 4 layer headgasket?

99-DC2

iTrader: (1)

the head can be milled safely up to 30thousandths... for piston-to-valve contact that depends on what piston and cam you're using (if using stock pistons then you will be fine)... as for using a 4-layer hg, it seems to defeat the purpose of milling the head... it is preferrable to use the stock hg... you'd be lucky to reach around 11:1 with stock hg...