4age to 7age Questions

[Nomuken]

So, I did some math and was quite stoked about the results. Probably I should re-think some things before starting an 7AGE engine!

So we all know that static compression is

[(Pi/4) x Bore^2 x Stroke]+ Vc
--------------------------------------
Vc


With VC being the clearance volume. So Vc stands for the combustion chamber volume + volume of the headgasket + (or - if domed) the volume of the piston dish + the piston to deck clearance volume. So let's find a few values. Correct me if I get a value wrong!
Combustion chamber: 37cc => 37000 mm3
Headgasket: [(Pi/4)x82^2x1mm) => 5281 mm3
Piston dish: 9.4piston source:club4ag => 900 mm3
Piston to deck: [(Pi/4)x81^2x0.3mm) => 1546 mm3

So VC for a standard 4AGE headgasket with 1.0mm compressed height, 9.4:1 dished largeport pistons and a pretty standard largeport head results in VC = 44727 mm3

So CR is:

[(Pi/4) x 81^2 x 85.5] + 44727
-------------------------------------
44727

CR = 10.85 : 1



With 10.3:1 hi comp pistons, you'll have a dome volume of -3650mm3. This will result in:

CR = 11.96:1 (still with a 1.0mm 4AGE compressed headgasket and the largeport head)

Please correct me if I got a value wrong or missed something.