d15b2 pistons help

[sckrx]

hey guys new to hondaswap.com and just have a few questions. i have a 90 crx dx with d15b2 motor i was wondering if i could use my stock rods and crank with PM7(zc) pistons without any problems? And what would compression be? i used a compression calculator
and it said 10.5:1 i just want to verify i typed in the right info. tnx.

 

[jlicrx]

yes, you can use the PM7 pistons without a problem the compression ratio with D15 block, rods, head and head gasket with the PM7 is 9.13:1 - this is because the PM7 pistons have a compression height of 29mm, which puts the top of the pistons 2.2mm (0.0866") down in the cylinder from the top of the block - the D15 pistons are only down in the cylinder 0.5mm (0.020") - the stock D15B2 compression ratio is 9.18:1 - using the PM7 pistons will lower your compression

 

[sckrx]

so what pistons could i use to raise compression on the cheap? I mean without having to spend $400 for forged pistons. looking to get into at least the 10.5:1 range of compression. tnx