10.9 84.5mm GSR Arias Flatop pistons + Itr head + supertech "domed" valves (turbo version with inverted dome) = Lower then 10.1 compression??

I know someone must know, any help would be greatly appreicated...

 

Might want to throw in what head gasket you're using.

 

stock head gasket

 

http://www.c-speedracing.com/h...c.php
check it out

 

maybe its a little higher than i had thought.. hmmmm

10.547005367477691 (from what i pluged in on the c speed calculator) 84.5mm bore

with an 81mm bore and all the other same value's(9.891124185252893)

 

buy a stock three-ply head gasket take out the ribbits from the head gasket and separate the three layers ,throw away the center layer and sandwhich an aftermarket headgasket between the two stock layers, and tighten it really well.<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jordo &raquo;</TD></TR><TR><TD CLASS="quote">10.9 84.5mm GSR Arias Flatop pistons + Itr head + supertech "domed" valves (turbo version with inverted dome) = Lower then 10.1 compression??

I know someone must know, any help would be greatly appreicated...
</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B-seriesbuilders &raquo;</TD></TR><TR><TD CLASS="quote">buy a stock three-ply head gasket take out the ribbits from the head gasket and separate the three layers ,throw away the center layer and sandwhich an aftermarket headgasket between the two stock layers, and tighten it really well.</TD></TR></TABLE>

errr.......That would raise his CR number instead of lowering it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HypeR1004 &raquo;</TD></TR><TR><TD CLASS="quote">

errr.......That would raise his CR number instead of lowering it</TD></TR></TABLE>

you have mis read my friend.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B-seriesbuilders &raquo;</TD></TR><TR><TD CLASS="quote"> sandwhich an aftermarket headgasket between the two stock layers</TD></TR></TABLE>

this is how its done on low budgets.

 

i pluged it in and came up with 10.03.

then using the specs from arias site. came out with 9.6:1.. how in the hell do they get those pistons to 10.9

 

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

you have mis read my friend.
</TD></TR></TABLE>

damn....missed the aftermarket sandwiching part