Okay I was going to be using JDM ITR Pistons with my setup and have the oem honda 81mm pistons but it turns out I need to go to 82mm - It looks like I will have to use B16 pr3 RS Machine pistons because they are the only thing I can find in 82mm besides the topline. I was looking for around 12.5:1 compression for the street on a full tune- This is what I have put into the c-speed calculator and help me out to see if I'm correct-
Block 82 X 87.2
Head B18c1
PR3 B16 6.01cc (will be .40 over) 82mm
.009333 head gasket thick (have buddy club .5mm gasket and head is milled-
B18 Piston to deck height (this I'm not sure about it is a b16 piston is a b18 block? Would I need to use b16 or b18 for piston to deck?
Okay with all the info I put in its b16 piston to deck compression = 12.65
with b18 piston to deck compression = 12.26
On both of these I need to add .3 compression because I have flat high compression valves- Thanks and sorry for all the typing

 

Nothing?

 

Does anyone know what piston to deck I would use? Is the c-speed or the Zealautowerks calculator more accurate?
Setup = GSR Block 82mm bore, pr3 b16a Pistons, Head milled, .5mm head gasket, Any help on what the compression would be is great.........