i have a 93 prelude that i got with a f20a dohc. i have seen some threads of putting a h22 head on sohc f22b2 blocks and i was wondering if my block has the oil passages that h22/23 vtec head would need. im looking to get around 9:1 out of it for a boost later. any advice?

 

It's in the FAQ.

 

The H22 head has two extra oil passages that need to blocked off. The F22b2 block doesn't have them. But like minilogoguy18 said, there's a couple of threads out there about this setup. Try these:

https://honda-tech.com/forums/honda-prelude-4/g23-vtec-56k-definitely-beware-1069869/
https://honda-tech.com/forums/honda-prelude-4/f22b2-block-h22a1-head-f22-vtec-f22b-vtec-776837/
https://honda-tech.com/forums/honda-prelude-4/new-frankenstein-engine-%3D-g23-f23-h23-write-up-long-56k-beware-1046336/

Good luck!

 

i have the f20a dohc in the car now im trying to figure out a way to squeeze some more power out of it.