If your guys had a z6 bottem end............would u rather build up a Z6 head or a Y8 head?
I need facts here, its time to get down to buisness.
car is going to have a n/a build up.

 

.......get to work guys

 

If I was doing a major buildup I'd probably go with the z6 head. The head flows better. It has less compression, but the extra airflow makes up for it. Espescially if you are really building the motor.

 

alright you should try searching first this has been covered a million times but the z6 head flows better than the y8 unless you port and polish but the y8 head needs special attention because of the air flow in the intake ports so have that corrected and you will be in buisness, there is alot more search and you will find all of the info you need

 

honestly u guys tell me to search and yet all i get is the same story
Z6 flows better
y8 high compression
good to know........but which is better would a ported Y8 head be better then the z6? Believe me I have searched

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SIcoup &raquo;</TD></TR><TR><TD CLASS="quote">but which is better would a ported Y8 head be better then the z6? </TD></TR></TABLE>

I'm not sure, but a ported Z6 should flow better than the ported Y8.

 

I really don't think there is much difference between a Y8 and Z6 head. If you have a Z6 bottom end, just use the Z6 head. I know one flaw of a Y8 factory head, is for each cylinder one of the valve seats sticks up into the port. Leaves a nice sharp edge to trip the airflow up on the way into the chamber. I have checked Y8 heads, from a '96 on up to a '00 car and found the same thing. Never have looked at a Z6 head to compare that to.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Marauder &raquo;</TD></TR><TR><TD CLASS="quote">I really don't think there is much difference between a Y8 and Z6 head. If you have a Z6 bottom end, just use the Z6 head. I know one flaw of a Y8 factory head, is for each cylinder one of the valve seats sticks up into the port. Leaves a nice sharp edge to trip the airflow up on the way into the chamber. I have checked Y8 heads, from a '96 on up to a '00 car and found the same thing. Never have looked at a Z6 head to compare that to. </TD></TR></TABLE>

Huh!?!
Z6 port designs are better than the Y8s
But the Y8 combustion chamber is better than the Z6.

I personally would take the Y8. ports can be (are being redesigned) chambers are more work.

http://pub143.ezboard.com/fhon...topic

 

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

Huh!?!
Z6 port designs are better than the Y8s
But the Y8 combustion chamber is better than the Z6.

I personally would take the Y8. ports can be (are being redesigned) chambers are more work.</TD></TR></TABLE>
i was waiting for you to say ssomething so i could agree with it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sohcvtec1995 &raquo;</TD></TR><TR><TD CLASS="quote">
i was waiting for you to say ssomething so i could agree with it </TD></TR></TABLE>


[**** taking]Well if Maruader would get off his Subaru loving buttocks and finish the testing on the Y8 porting.....[/**** taking]

 

Yeah, I almost forgot about how much larger the Z6 combustion chamber is than the Y8. I need to finish my cup of coffee! And then get another one!

 

That link i posted is a great write up about on the ups and downs of both heads.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spade &raquo;</TD></TR><TR><TD CLASS="quote">[**** taking]Well if Maruader would get off his Subaru loving buttocks and finish the testing on the Y8 porting.....[/**** taking]</TD></TR></TABLE>

Yeah...yeah....actually, I'm drawing up a flow fixture this morning! About time I'm getting to it!

 

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

Yeah...yeah....actually, I'm drawing up a flow fixture this morning! About time I'm getting to it!</TD></TR></TABLE>

Sweet. Stop posting and get back to work

 

Make me....punk!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Marauder &raquo;</TD></TR><TR><TD CLASS="quote">Make me....punk! </TD></TR></TABLE>

LoL...um....

*reaches into computer screen and grabs Marauder by the hair*
*slap* *slap* *slap* *slap*