exactly what the title says, whitch head would be better for a minime? i know the y8 would give it a tad bit more power, but would the cost difference be worth that bit of extra power? and how hard is it to up from obd1 to obd2 ? thanks guys, this forum rocks.

 

http://www.knology.net/~jediklc/D.htm

Y8 head gives 10.2 compression ratio

Z6 gives 9.8

so if you plan on forced induction you will have to look into it for future purposes

 

Actually the D15 with a D16Z6 cylinder head yields 10.10:1 compression and a D15 with a D16Y8 cylinder head yields 10.52:1 compression. March issue of Honda Tuning. The D16Z6 and D16Y8 heads usually go for relatively the same price. At least around here...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dimi &raquo;</TD></TR><TR><TD CLASS="quote">Actually the D15 with a D16Z6 cylinder head yields 10.10:1 compression and a D15 with a D16Y8 cylinder head yields 10.52:1 compression. March issue of Honda Tuning. The D16Z6 and D16Y8 heads usually go for relatively the same price. At least around here...</TD></TR></TABLE>

yeah but which D15?? this is specifically the B7

 

u forgot to change the gasket on that calculator, ur supose to use a d16z6 or d16y8 gasket

 

Y5

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by snowman0520 &raquo;</TD></TR><TR><TD CLASS="quote">u forgot to change the gasket on that calculator, ur supose to use a d16z6 or d16y8 gasket</TD></TR></TABLE>

Exactly. With that calculator, B7/Z6/Z6 gasket = 10.105958746546186
B7/Z6/Y8 2-layer = 10.415211822031908
B7/Y8/Y8 gasket = 10.524130208037975
B7/Y8/Y8 2-layer = 10.862967482079001

 

ok learning process why would you use the Y8 or Z6 gasket instead of the B7??

 

Wait a minute I thought the Z6 head flowed better then the Y8 head.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictildeath &raquo;</TD></TR><TR><TD CLASS="quote">ok learning process why would you use the Y8 or Z6 gasket instead of the B7??</TD></TR></TABLE>

It's thinner. Thinner gasket = more compression.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chez’sExCoupe &raquo;</TD></TR><TR><TD CLASS="quote">Wait a minute I thought the Z6 head flowed better then the Y8 head.</TD></TR></TABLE>

Supposedly it does. I have yet to see a flow test on both heads. Supposedly a D16Z6 head with a D16Y8 intake manifold is the best setup, for OEM parts that is.