i read this in an earlier post...

"why bother with a Z6? If you want some solid power out of a SOHC engine, bolt a D16Y8 (96+ sohc vtec) head onto a D16A6 (CRX Si) block. That makes 10.5:1 compression and VTEC, which will surprise the hell out of all the B16's that you stomp on"

now i have a 91 CRX Si and i have a few questions about this.
firstly, roughly what is the horsepower when installed
- how much trouble/work is it to complete this
- where would i get a D16Y8 head and how much
- is there anywhere i can get all the info on this swap

cuz i was just about to order a ZC DOHC non v-tec, and if this is around the same price and this much better, then i'd definately rather do this...also, if its better than a b16 why dont more people do this, it would only make sense...but anyway, i'd greatly appreciate some info..thanks a ton.

also, if you know of any places with reasonable prices for ZC engines that would be helpful as well.

 

This is what's know as the "mini-me" swap. You can use the head from the d16z6 or the d16y8, but the y8 is a bit better. All you really need for this swap in your case is a complete head with VTEC solenoid. Even your manifold setup should work fine. Expect to pay around $200 or so for a head.

Basically, unbolt your intake and exhaust from your stock head. Drain the oil and coolant. Remove the valve cover and unbolt the head in the proper sequence shown in the manual you already have. Remove the oil control jet on the top/rear/center of the block. Carefully remove any remnants of your old head gasket, replace it with a nice new Y8 gasket, and put your Y8 head on, torquing it in reverse order to the removal and to the proper specs. Reattach the manifolds and coolant line. Put new coolant and oil in.
Then run a line for the RPM activated trigger to turn on the solenoid at the desired RPM. There's many how-tos on this floating around.

 

I picked up my D16Y8 head for free. It needs 50 bucks worth of parts, but I can handle that.

 

you have to use Y8 head bolts. To of the stools in the head are shorter. shorter bolts for those holes