like the topic says, just wondering if the valve size is bigger on b20 or the same as b18, also combustion chamber is it bigger or smaller

 

I'm not sure on the valves..But The b20b/z combustion chamber is 84mm while the b18a/b is 81mm.

 

if its 84 mm but whats the cc diff and i was told the b20 head has vtec size valves

 

well any more info

 

only the rare p8r head has the larger 33 mm intake valves

 

oh ok so p8r head is a b20 head but all the others are same though

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98lude-t &raquo;</TD></TR><TR><TD CLASS="quote">oh ok so p8r head is a b20 head but all the others are same though</TD></TR></TABLE>

All other B20 heads have the same valve sizes as B18A/B18B heads - 31mm intake and 28mm exhaust.