im picking up a d15z1 tomorrow to put in my eg shell. I have a z6 with a messed up crank but the head is sitll good, now my question is should i leave the z1 head on or would i gain anything from the z6 head and which one is better for boost

 

It's a vtec-e head but I believe it's got roller rockers like the y5 head but is only 8v's but I could be totally wrong. If you stick that z6 head on that z1 block your almost gonna have a d15b setup. I would kill for that shortblock. Too bad that block isn't on the compression calculator. It's totally different from the all other 1.5 block being the rods and crank are completely different.

 

vx head is a 16 valve head

 

the info on this page http://www.knology.net/~jediklc/specs.htm says it has a 9.3:1 compression ratio. Im picking up this motor complete with tranny for 100 bucks im just uncertain of which head will be better

 

vx head is junk plan and simple. Small port head