one2many

what are your thoughts on it ?


reason i ask is because i have a a6 head that i wanna use with my vitara built z6 block. a6 head with vitara pistons doesnt make so hot of a compression.



.030" off of the head, or .015" of the block and .015" of the head ? maybe more ?


i need some help.

Bone1

I've seen .070" taken off the head, first milling indicator is at .039"

one2many

.039" would be fine. bringing my compression to 8.8:1 using the -6cc or 7.3:1 using the new found -15.3cc.


what happens to cam timing ? i read that for every .010-.012 taken off the head that it retards the cam timing 1*.


does the same apply to when decking the block ?

one2many

anyone else ?

jarebear667

it would becuz your pulling material just from the other side of the world.. have you looked into a thinner headgasket?

one2many

yeah, ill be using the 3 layer z6 head gasket. the y8 2 layer gets me like +.17xx in compression.

jarebear667

i know through cometic you can get different thickness.. them them out

one2many

ill be sticking with the oem gasket and shaving the head or the block because im already getting everything machined.


my main concern now is the cam timing. anyone have any experience with this kind of stuff ?

nascarfan

I would just rock the thin headgasket, just because if your head/block ever warps it leaves you with more room to machine

one2many

the thinest one still isnt enough to make any real difference. plus i hear bad things about cometic hg.


sohc head are cheap and abundant especially the a6/b7 heads.