i can get a head for cheap and i have a d16y7 in my crx right now

What kind of compression and hp wil i be looking at?
i can get a hodl of some d16a1 pistons too.... but not too sure what the complete
set up will yield.... i used the online d s-eries calculator.. but couldnt figure it out

 

anyone?

 

up? or approximations?

i dont know the value to plug into the equation for y7 pistons

 

i got 12.03:1 with the y7 block and head with p29 pistons (a1)

I assume the block is the same as a y8 since its still a d16,

so bore of 75mm
Stroke of 90mm
Combustion chamber on y7 head is 34.6
3 layer head gasket
p29 pistons with 7.2 dome
piston to deck height is .040

Grand total of

12.03:1

Someone correct me if im wrong. Its bsaically the same thing as a y8 but with larger combustion chambers...actually same as the z6(cc). From what i researched.

 

its 10.7:1

use -2.2 the y7 dish
and the piston to deck is 0.00

I got the same setup.



Modified by BVM at 10:29 PM 11/13/2003

 

why is the piston to deck height .00? you are supposed to use the pistons' piston to deck height

 

if there stock y7 pistons thats what the value is use the formula on the right of the calc and thats what you will come up with.
http://www.knology.net/~jediklc/D.htm

 

wow thats pretty good with JUST the z6 head... if i mill it, how muhc more will i gain?

what kinf or HP values are you putting down as well?

 

i had 11.3 or so when i ran d16a6 with z6 head

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BVM &raquo;</TD></TR><TR><TD CLASS="quote">if there stock y7 pistons thats what the value is use the formula on the right of the calc and thats what you will come up with.
http://www.knology.net/~jediklc/D.htm</TD></TR></TABLE>

yeah i was using the p29 pistons not the stock ones.