Originally Posted by bambbrose
b20 sleeves are not bored b18 sleeves.. they are a webbed cast sleeve design, which is completely different from all other b series engines, and is prone to cracking at high compression/rpm levels
:thumbup:
Just like the b21 out of the old lude, it's a b-series like non-other.
It's the design that causes the failure not the thinkness.
As far as the head, there is no such thing as a non-vtec b16a, if anything the b18b and b20 are very close, if not the same. I've never investigated the b20 head so i cant say for certain.