octane levels
i jsut did it and it gave me 9.829892238258487
but im going to zero deck it since i found a good local machine shop
You are using the calcultor wrong;
Here is an example;
Enter Bore/Stroke Designation Type
1 = Inches 2 = Millimeters =1
Enter Cylinder Bore Size =4.030 (assuming 30 over)
Enter Piston Stroke Length = 3.58 (360)
Enter Head Gasket Bore Diameter = 4.1 (they are always bigger than the bore, Felpro is 4.180)
Enter Compressed Head Gasket Thickness = 0.028 (number you quote)
Enter Combustion Chamber Volume In CCs = 72 (number you quote)
Enter Piston Dome Volume In CCs Negative For Dished Pistons (Use '-') = -5 (KB107 you keep talking about)
Enter Piston Deck Clearance Negative If ABOVE Deck (Use '-') : = 0.050 (number you quote)
Calculated Engine Compression Ratio = 9.00258006699916 :1