ArchAngel Sabastian

Whats the difference between these two heads and could the y8 head be used on the z6 block its a 95 z6 block and a 98 y8 head, thnx

Spade

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ArchAngel Sabastian &raquo;</TD></TR><TR><TD CLASS="quote">Whats the difference between these two heads</TD></TR></TABLE>

**** where to start........

Yes you can use the Y8 head on the Z6 block.

ArchAngel Sabastian

haha you said where to start what all do i need to know? i searched but i didnt see much.

AlphaQup

I seen many related topics, since i been here on H-T.
From what I've read:
The z6 head flows alot better than the y8. But stock specs, the y8 would yield higher compression.
Correct me if I'm wrong fellas

feriocious

It is to my understanding that the z6 head flows better, but the y8 intake/exhaust manifolds were better. So I guess if you use z6 with y8 manifolds, it'd be the best of both worlds.

ArchAngel Sabastian

well other than looking @ it from a performance aspect this will basicly be a stock car but im having trouble finding a z6 head and i found a y8 head for about 100bux so i was wondering if it would be possible to use that so can i use the y8 head on the stock z6 block with z6 manifolds i have all the parts from the old z6 head but the cam journals are warped/scared and when torqued down the cam wont turn.

337 GTI 1.8t

z6 head has better ports stock, but the y8 combustion chamber is of a superior design. y8 cam is better than z6 cam stock vs. stock.

A ported y8 head is the best head between the two, IMO.

z6 combustion chamber has 34.6 cc's, while the y8 head has 32.8 cc's. z6 shortblock, you'll gain almost .4 points or so with the y8 head

TABIAS

AFTERMIDNIGHT "It is to my understanding that the z6 head flows better, but the y8 intake/exhaust manifolds were better. So I guess if you use z6 with y8 manifolds, it'd be the best of both worlds."

what if you have a z6 head thats been ported out on a y8 block with a skunk 2 intake manifold? which would be better y8 IM on a z6 or skunk IM on a z6???

ExospeedAMcrx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 337 GTI 1.8t &raquo;</TD></TR><TR><TD CLASS="quote">
z6 combustion chamber has 34.6 cc's, while the y8 head has 32.8 cc's. z6 shortblock, you'll gain almost .4 points or so with the y8 head</TD></TR></TABLE>

Here's a picture of the Z6 head.
I'll try to get some pics of the Y8 head, but the difference is that the combustion chamber is more "square" shaped. it doesnt have the CIrcle shape like the z6 heads do.
The top and bottom parts of the combustion chamber near the edges of the valves are "filled in" and flushed with the head surface to give it a smaller combustion chamber volume.

ExospeedAMcrx

here's a Welded combustion chamber we did on a D16A6 head

TABIAS

i've been told that the y8 intake manifold is teh best for a z6 head (more power) what about a skunk2 IM on a z6 head?

TABIAS

bump for some good info....

JDMs1eeper

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AlphaQup &raquo;</TD></TR><TR><TD CLASS="quote">I seen many related topics, since i been here on H-T.
From what I've read:
The z6 head flows alot better than the y8. But stock specs, the y8 would yield higher compression.
Correct me if I'm wrong fellas </TD></TR></TABLE>

yea

Dumbo

Looks good. <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by exospeedAMcrx &raquo;</TD></TR><TR><TD CLASS="quote">here's a Welded combustion chamber we did on a D16A6 head

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

Spade

Read up Z6 vs Y8

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

Jer

thats some really good info. thanks for the link