b20 blocks

**datzlr** · 10-09-2009 06:39 PM

which one is a good one ? or are they all the same ?

**civic_vi** · 10-09-2009 06:49 PM

b20z1 blocks have higher compressions and slightly more hp compared to b20b's

a better block to start off with, but if you're going to change pistons and rods

it should'nt make that much of a difference

**ZeForce** · 10-09-2009 06:56 PM

We didnt get the B20z in oz, our equivent is the B20b8 with the PHK pistons which will give you slightly higher comp if you plan to stay with stock internals

**GSi_PSi** · 10-09-2009 07:04 PM

yup B20B8... If you planning on using stock pistons.
With PR3 head B16a-B18c7 head = 10:04 compression ratio
With P72 head B18C2 = 10:12-10:23 compression ratio
There are other factors such as headgasket thickness, how much the heads been decked so dont quote me on specific figures.
the others are B20B4,B20B3 lower compression and a JDM B20B which depends on year model for difference in compression i think...