How far do I have to mill my head to hit 11.6-8-1 and would I have clearance issues with Toda Bs and a 2 layer headgasket? Would it be worth my money to get it ported and polished while it's at the machine shop?...I'm really not sure I want to do this, but I could theoretically be done with my engine and not screwing around for another few months trying to get compression after I install the Bs...thanks


[Modified by tecnic1, 2:17 PM 4/5/2002]

 

By the time you raise your stock compression MORE than a point(11.8:1), you'll be at the quench pads. LOL.

I wouldn't feel safe running CTR cams with that kind of clearance.

Don't mill more than 15 or so.

 

nah. you can mill like the thickness of a pj sandwich and really get some compression

 

lol. most i have done is 40 thou on a stock GSR motor w/ ITR cams.

awesome comparison. lol.

 

Is that a PJ sandwich on sandwich slice bread or regular sliced bread cause there has to be at least 20 thou or so difference.....LOL. So 15 and the 2 layer would get me 11.8 about?...will that make me happy? Will I get that "mid range power" I would trade my first born for?



[Modified by tecnic1, 9:30 AM 4/5/2002]

 

no. the proper pistons will make you want to trade your first born

 

With proper pistons and proper install i won't be able to afford my first born. I would love to get them, but it's not going to happen any time soon.

 

Try using the calculator on: http://www.c-speedracing.com/howto/c.../compcalc.html

select the 2 layer gasket and then subtract how many thousandths of an inch you want to mill and modify the thickness number accordingly. You may end up with a negative number on the thickness but I think that still works.

While we're on the subject, anyone know how to calculate how much to advance the cam gears to compensate for x amount milled?

 

That's depressing....milling 20 thou with the 2 layer only got me 11.4:1....

 

If your going to mill the head, Why use a 2-piece gasket?

Mill 30thouandths off and use a 3-layer gasket. and you will get your approx. compression ratio.

 

I already own the two layer, and I can always replace the head gasket, but once I mill the head, it's milled.