b20 blocks

[datzlr]

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

[civic_vi]

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]

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]

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...

[datzlr]

nice thanks guys

[datzlr]

is 12.5:1 too high for stock sleeves?

[fatboyz39]

is 12.5:1 too high for stock sleeves?

Wouldnt say its too high. Personally around the 11:1-11.5:1 for a B20 on stock sleeves is safe.

[ZeForce]

is 12.5:1 too high for stock sleeves?

With a good tuner should be fine