Page 1 of 2
D16y7 with VTEC Head
Posted:
Sun Nov 28, 2010 11:00 pmby PopKorn689
Hey guys so far in the past month this website has helped me out tons with D series info and I am going to come to you for more help. A buddy just got a 97 DX Hatch and we are thinking of putting the y8 head on it but were wondering what kind of compression and power would be made with this. I'll keep searching for the time being but if anyone knows let me know. Thanks.
Posted:
Mon Nov 29, 2010 3:47 amby teal_dx
I don't think compression would change at all as both heads have the smaller square-ish shaped combustion chambers. You'd pretty much be converting it to the same specs as a D16y8.
Posted:
Mon Nov 29, 2010 4:23 amby PopKorn689
Well from what I've researched thus far the y7 pistons have taller pistons or whatever you call it that give it a little bump in compression. Also something about the y8 head gasket being thinner? What's up with that? Again still searching so I'll post what I find and see what ya'll think.
Posted:
Mon Nov 29, 2010 4:28 amby Ajax1989
it will jump from 9.28:1~ too 9.62:1~
Posted:
Mon Nov 29, 2010 5:35 pmby PopKorn689
Is that just with the head swap or do I need to find the y8 thinner head gasket i herd about?
Posted:
Mon Nov 29, 2010 6:03 pmby Ajax1989
PopKorn689 wrote:Is that just with the head swap or do I need to find the y8 thinner head gasket i herd about?
yes
here is the cr calutalor
http://www.zealautowerks.com/dseries.html
you can mess around and see what heads on what blocks wit wich pistons do wat
Posted:
Tue Nov 30, 2010 1:28 amby PopKorn689
I love that page! Thanks a ton! According to that calculator I'll be looking at 9.9:1 Compression with a y8 head on a y7 bottom and if I can locate this mythological 2 layer y8 head gasket it'll be around 10.25:1!!! 
Posted:
Tue Nov 30, 2010 4:08 amby Ajax1989
PopKorn689 wrote:I love that page! Thanks a ton! According to that calculator I'll be looking at 9.9:1 Compression with a y8 head on a y7 bottom and if I can locate this mythological 2 layer y8 head gasket it'll be around 10.25:1!!!
i think honda sells them, not sure, but ya i like that site too, u can do h/f's k's and b's and transmissions too
Posted:
Tue Nov 30, 2010 5:14 amby PopKorn689
Well nobody has a part number for it or I can't find any posts that actually verify such a head gasket is even a real thing. I was actually laughed off another site for asking.
Posted:
Tue Nov 30, 2010 5:31 amby Ajax1989
i guess you gotta get the 3layer and take the middle layer out
Posted:
Tue Nov 30, 2010 1:39 pmby eg84dr
^
say what!?
please explain
Posted:
Tue Nov 30, 2010 4:13 pmby OleFolk
cmon someone
You know a D16 three stage vtec sounds sick right?
Edit: Hell we can call it a D16B
Posted:
Tue Nov 30, 2010 5:38 pmby Ajax1989
eg84dr wrote:^
say what!?
please explain
i just googled it and some hater-tech thread said that
so im assuming that wat u do, i really dont know i was just tryin to help him out, if you cant i guess you cant
http://www.honda-tech.com/showthread.php?t=1756743
Posted:
Tue Nov 30, 2010 5:39 pmby Ajax1989
OleFolk wrote:cmon someone
You know a D16 three stage vtec sounds sick right?
Edit: Hell we can call it a D16B
wahhhht
lol
d16b vtec
Posted:
Tue Nov 30, 2010 5:45 pmby d-mon
94_jdm_ferio wrote:i guess you gotta get the 3layer and take the middle layer out
that is correct, AJ.
i don't recommend doing this.
just mill the head if you want a noticeable compression bump.