bootlegcivic

Alright here's the setup B16B head and block with a LS crank and LS rods (to convert to 1.8). Do I use 9:1 LS pistons or 9:1 b16 pistons to get the compression I want? I'm confused on wrist pin placement and combustion chamber size with the B16b head.

Any more info needed on the setup let me know.

wakedoe

Well the B16B is the same height as the B18 so you'd treat it as an LS/Vtak. So LS 9:1 pistons should yield a slightly higher compression, something like 9.1:1 or 9.2:1, but B16 9:1 pistons will probably put you at 9.8:1 or 9.9:1. Compression ratio is the volume of the cylinder+volume of combustion chamber over volume of combustion chamber, and a B18B crank has a much longer stroke, so you it would be compressing a much larger air/fuel mix into the same space.

bootlegcivic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wakedoe &raquo;</TD></TR><TR><TD CLASS="quote">Well the B16B is the same height as the B18 so you'd treat it as an LS/Vtak. So LS 9:1 pistons should yield a slightly higher compression, something like 9.1:1 or 9.2:1, but B16 9:1 pistons will probably put you at 9.8:1 or 9.9:1. Compression ratio is the volume of the cylinder+volume of combustion chamber over volume of combustion chamber, and a B18B crank has a much longer stroke, so you it would be compressing a much larger air/fuel mix into the same space.</TD></TR></TABLE>

anyone else confirm this?

bootlegcivic

bump

Mfoehrkolb

http://www.clubcivicquebec.com...f.php

--- I agree with what he says, just look @ that site. Do your set up and look @ comp you get.

I was gonna use pr3 pistons on my lsV setup but thanks to this site i decided no. I was gonna yield almost 13:1 comp haha. WAY to high for what i want.