4-banging

I did a generic search but didn't find out what I was looking for. If you know the answer please share if you don't refrain friom using this statement "use the search key".

thanks in advance

OK, swapping a B16a2 head onto a B18cX shortblock will yield me what compression ratio. All parts OEM and nothing changed internally as far as pistons or cams.

If I went with a B18C5 Shortblock and 00+ ITR cams, how will that affect my c/r?

I'm trying to figure what aftermarket piston size I will need to get to attain my desired c/r.

00Red_SiR

http://www.c-speedracing.com/h...c.php

civictildeath

11.1 with p73-00 pistons jdm pistons

10.6 with p73-a0 pistons usdm pistons

4-banging

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00Red_SiR &raquo;</TD></TR><TR><TD CLASS="quote">http://www.c-speedracing.com/h...c.php</TD></TR></TABLE>

Is this right?
Block = B18c1/5 Bore = 81.00 Stroke = 87.20
Head = B16a/b - B18c5 Combustion = 42.70
Piston = p73-A0 (USDM B18C5) cc per piston = 3.64
Headgasket Thickness = OEM 3-layer thkness = .02900 Bore difference (mm)
[Gasket Bore - Cylinder Bore] I don't know
Piston-to-Deck Height = do I use b16 or b18

thanks again

4-banging

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictildeath &raquo;</TD></TR><TR><TD CLASS="quote">11.4 with p73-00 pistons jdm pistons

10.8 with p73-a0 pistons usdm pistons</TD></TR></TABLE>

so it will raise my comp then by swapping out the shortblock. will the cams affect it any?

civictildeath

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4-banging &raquo;</TD></TR><TR><TD CLASS="quote">
Piston-to-Deck Height = do I use b16 or b18

thanks again</TD></TR></TABLE>

use the b18 RE did it for you above

00Red_SiR

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4-banging &raquo;</TD></TR><TR><TD CLASS="quote">

Is this right?
Block = B18c1/5 Bore = 81.00 Stroke = 87.20
Head = B16a/b - B18c5 Combustion = 42.70
Piston = p73-A0 (USDM B18C5) cc per piston = 3.64
Headgasket Thickness = OEM 3-layer thkness = .02900 Bore difference (mm)
[Gasket Bore - Cylinder Bore] I don't know
Piston-to-Deck Height = do I use b16 or b18

thanks again</TD></TR></TABLE>

for cylinder bore, if you don't know if it's been bored out, just use "stock" setting for now. Piston to deck height refers to the block you are using which is the B18.

4-banging

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00Red_SiR &raquo;</TD></TR><TR><TD CLASS="quote">

for cylinder bore, if you don't know if it's been bored out, just use "stock" setting for now. Piston to deck height refers to the block you are using which is the B18.</TD></TR></TABLE>

stock would be 0 then, correct?

thanks everyone for all your help

So, I'm looking at 10.8 c/r with a stock USDM ITR shortblock mated with a stock USDM B16A2 head. Cool

00Red_SiR

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4-banging &raquo;</TD></TR><TR><TD CLASS="quote">

will the cams affect it any?</TD></TR></TABLE>

Cams will not affect your compression ratio.


EDIT- To all the perfectionest techies, I know cams have an effect on ultimate comp ratios but in this case we're measuring static comp ratio where they wouldn't be a factor.

00Red_SiR

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4-banging &raquo;</TD></TR><TR><TD CLASS="quote">

stock would be 0 then, correct?

</TD></TR></TABLE>

Correct

4-banging

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00Red_SiR &raquo;</TD></TR><TR><TD CLASS="quote">

Correct </TD></TR></TABLE>

thanks alot!!