d16z6--d16y8

[1991HB]

i was reading a thread on here about the mini me swap about the z6 and y8 heads. i was thinking about doing this myself but i have a question...if i were to get a d16z6 head would parts from the d16y8 head fit on the z6(fuel rail, intake manifold, distributor, etc.) same goes for the opposite...will z6 parts fit on the y8 head

[slipknotcraig133]

There are some differences between them. The fuel rails are different so if you are going to use a z6 intake mani you have to use a z6 fuel rail. As far as the dizzys im not sure if they are interchangeable or not i can find out tomarow tho. Exhaust manifold/header (if stock) has to be the existing one in the car or it will not bolt up example:you cant bolt up a y8 stock header to a stock 89 civic exhaust. If you do the swap, get a new timing belt and head gasket. Also if you car isnt an si or and hf you will need to do a mpfi conversion. If its an hf you will need different pistons. The hf pistons wont work because the only have 2 valve reliefs a cylinder and the z6 and y8 heads are both 16 valve. Also your going to need a way to activate the vtec. If i was your and had the money i would replace the water pump, cam seal, dizzy seal, valve cover gasket,ect.

[turtlecrxsi]

Also, bambam told me that the y8 head works good on a si block because you can retain your si dizzy on the y8 head, stay OBD0 with a VAFC. If you use a z6 head you have to modify the legs so the si dizzy will mount up and/or convert to 0BD1...