my friend is tryin to tell me that he thinks a ls head on a b20 would be better yhen a crv head on a b20. He said something about the Ls head flowing better what do you think?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J-Spec EG &raquo;</TD></TR><TR><TD CLASS="quote">my friend is tryin to tell me that he thinks a ls head on a b20 would be better yhen a crv head on a b20. He said something about the Ls head flowing better what do you think?</TD></TR></TABLE>

nothign is different from what i know between b20s and ls heads but the B20 cams i hear are slightly better than teh ls cams

 

LS heads and B20 heads are <FONT SIZE="2">IDENTICAL</FONT>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dirtyd463 &raquo;</TD></TR><TR><TD CLASS="quote">LS heads and B20 heads are <FONT SIZE="2">IDENTICAL</FONT></TD></TR></TABLE>

Yes, but only if the LS head is a 1994+. The 1990-1993 LS heads are not as good as either the 1994+ heads or the B20 head due to their smaller intake ports.

 

they have the same casting why would they have a smaller intake port

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dirtyd463 &raquo;</TD></TR><TR><TD CLASS="quote">they have the same casting why would they have a smaller intake port</TD></TR></TABLE>

 

I think Rocket, of Rocket Motorsports, and I argued this out once on his m24 forums.

The bump from 130 hp B18A1 to 140hp B18A1 was most probably where you got the bigger port PR4 head. So, 92+ heads. I know I've dealt with big port B18A1's... I have a '93 B18A1 that is a big port head.

 

the jump in hp was a result of timing and fuel maps along with a change in the exhaust and intake manifolds. i know for a fact that they are the same because i have THREE spare LS heads siting around and i MEASURED each one and found that they are all identical i have one from a 91 integra, a 94 integra and a 98 integra. all three of the castings are identical

 

im not sure about the intake head ports, but i know there is a huge difference on the IM.

somebody elses pic:


also cams,EX man., ecu

 

like i said before

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dirtyd463 &raquo;</TD></TR><TR><TD CLASS="quote">the jump in hp was a result of timing and fuel maps along with a change in the exhaust and intake manifolds. </TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dirtyd463 &raquo;</TD></TR><TR><TD CLASS="quote">they have the same casting why would they have a smaller intake port</TD></TR></TABLE>

PR3 B16A/B, B18C5 have same castings don't they? But they're different.

 

ok man you think that