The time has come to drop in my block in about a week or so... I have a b18b with itr pistons, blueprinted/balanced, shot peened rods blah blah blah... I have a stock b16 head going on it with a stock headgasket... I was wondering how much could I mill the head to get to about 11.8:1 compression? We only get shitty 91 octane so I dont want to go over that. Should I rock a one layer head gasket and mill the head or just straight up mill it? Thanks.

 

.005"

 

Cool thanks... anybody else?! I want to hear from some people expirenced with head milling I dont want to mess up my head.

 

why mill the head? if you're seeking higher compression do it through the bottom end or with a thinner head gasket. milling the head is not good.

 

My head is milled .002 No problems with it.

 

.002 is very little, thats just resurfacing the head and I dont beleive it effect compression much at all. Usually when people are trying to bump compression by milling they go like .040.

 

i milled my head .065 with 12.5:1 pistons in my street driven allmotor nonvtec..

 

Well should If i use a one layer headgasket it should be 11.6 so how much would I need to mill to just an extra .2 or .3?? I want to do the minimal i can.

 

My 12 - 1 pistons hit my head at tdc without the headgasket in place.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by triplet &raquo;</TD></TR><TR><TD CLASS="quote">Well should If i use a one layer headgasket it should be 11.6 so how much would I need to mill to just an extra .2 or .3?? I want to do the minimal i can.</TD></TR></TABLE>
Look for compression elsewhere. Mill the head the bare minimum necessary to achieve a flat surface. 0.200" or 0.300" is way too much. I believe the Honda service manual says max limit is 0.030". Mill the head further at your peril.

 

Oh no sorry I ment with a 1 layer head gasket it would be 11.6 and I want it to be 11.8. So how much would it take to get the extra .2 compression points?!

 

I was told once that if you don't change your oil for a long time, carbon will develop on top of your pistons and yeild a higher dome for more compression.


To be serious though, milling the head is the last resort. I would rather tear teh bottom end apart again and get some pistons with a little higher compression

 

Dammit!! I dont have the money to get new pistons... The head is being rebuilt and cleaned up so I figured take a little more off. Im going to try and go with a 2 layer or 1 layer gasket so I wont have to take much off the head.

 

milling the head Bad experiences i milled my b16 head i had on my type r shortblock (RIP)

 

Why is milling the head so evil?

 

Honda service manual says resurface limit is 0.2mm ( 0.008"). More than that is not recommended, though you can usually get away with as much as 0.030".

 

what happens at that point? Assuming you have adjustable cam gears and account for the increased compression and still have adequate valve clearance...what is the problem?

Thanks
Ben

 

Ok well I guess im going to run a 1 or 2 layer headgasket and talk to the guy rebuilding my head to see if i could maybe mill it 0.20 or something along those lines... I want to get 11.8 compression dammit!!