Hey, what this the "bore" diameter of the a B16A head (combustion) chamber - does it match up to the 81mm bore of the block (including the quench)? What about a a GSR - the quench is the head.....

Will the experts "chime in"

 

It should be 81mm or a bit smaller. You don't want the combustion chamber bore larger than your HG bore or your block bore.

 

Seen the posts on B20 head gasket. Do B20 blow because the head is spot-faced to match the block bore of 84mm

 

Are you refering to a B20/vtec?

 

Place the dowel pins in the head and place a OE gasket and you will see that the chamber is slightly smaller than the bore.

 

Aren't OEM HG good up to 82mm bore also?

 

Another way to ask the question

On a K20 does the bore of combustion chamber (head) match up with bore of block - experts can comment on quench etc.......

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all-mtr-teg &raquo;</TD></TR><TR><TD CLASS="quote">Are you refering to a B20/vtec?</TD></TR></TABLE>

Yes and also comment on B16, GSR and K20

 

QUOTE=all-mtr-teg]Aren't OEM HG good up to 82mm bore also? [/QUOTE]

What does HG stand for?


OK =Head Gasket !

Modified by Johnny_9 at 1:30 AM 5/14/2008


Modified by Johnny_9 at 3:20 AM 5/15/2008

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all-mtr-teg &raquo;</TD></TR><TR><TD CLASS="quote">It should be 81mm or a bit smaller. You don't want the combustion chamber bore larger than your HG bore or your block bore.</TD></TR></TABLE>

Can u comment on the GSR block, pistons & head - GSR head is flat - the quench pad is the head (c.f. with the B16B head) - the combustion chamber ("CC") bore diameter is looks much smaller than the block bore, but I guess you have to look at the pistons, right?

B20B Engines - how good his the squish, if the head isnt matched to the bore?




Modified by Johnny_9 at 1:08 AM 5/15/2008

 

Large bore (84mm) + lousy squish (detonation) + unmatched head to block + weak cylinder walls = Engine sure to blow?