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Pretty much any D head will work...you may run into problems with the distributor tho if your swapping a newer head..

I happen to have a Y7 head in good shape and im not far from you!
 

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Discussion Starter #6
Pretty much any D head will work...you may run into problems with the distributor tho if your swapping a newer head..

I happen to have a Y7 head in good shape and im not far from you!
So is the Y7 a Vtec? Not that it matters...I don't care if I gain anything...right now I'll gain by having my car "running"!!

What is the y7 out of? What do you want for it? (read don't have a lot of $$ at x-mas time) What do you have that goes with it?

Jason
 

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i put a y7 head on my car and liked it very much. i originally had an 8valve head. d15b8. the y7 is out of a 96-00 dx. it is the one with the goofy intake manifold that points the throttle body straight up.
 

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higher compression ratio and larger valves, different combustion chamber design.

the pm3 (your) head has a better valve angle though, and is often used for all motor builds. You probably will see a performance gain simply due to the upped compression ratio though.
 

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both of the d series c/r calculators have the wrong specs on the y7 head

http://www.zealautowerks.com/dseries.html
http://www.knology.net/~jediklc/dcalc.htm

you'll notice they are different even to each other.

The y7 head's combustion chamber is very similar to a z6 in shape and size. They have almost an elevated quench pad whereas the pm3 head (88-95 non-vtec) has no quench and is simply a hemisphere, i've looked at them side by side.

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

why the knology c/r calc is wrong...don't ask me?
 
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