YES!! the F22B DOHC Head will fit on the F22AX Block..PERFECTLY!!

[NoSloCB7]

It should be close...the F22B has slightly higher compression. But you will deffinately gain HP and Torque

[JDMcb7]

Originally posted by FushigiRES
It should be close...the F22B has slightly higher compression. But you will deffinately gain HP and Torque

I am completely stoked!!! Have you actually got the setup up and running on your car?


I need to find a head soon

[NoSloCB7]

Not yet, currently we are giving it a rebuild and a good ole' Fushigi tuning

[JDMcb7]

Originally posted by FushigiRES
Not yet, currently we are giving it a rebuild and a good ole' Fushigi tuning

I am very interested in your progress. Please keep me updated on the swap

[NoSloCB7]

Will do

[darkcoloraccord]

sweet, def want a diy

[NoSloCB7]

Got you covered

[NoSloCB7]

[JDMcb7]

Would it be wise to run the f22b ecu or just keep the f22a ecu?

[speedyhonda]

any updates on the project ???

FushigiRES, i hope it works like a charm, im definately trying it if it works out and now more then ever since my timing belt snapped keep us posted on the progress!!

[NoSloCB7]

I'll be doing the install and documenting the progress for a DIY very soon! I'll keep everyone posted!

[spirit7623]

Did you happen to measure the diameter of the head's combustion chamber? If so is it 85, 86, or 87? Just trying to figure out if Honda enlarged them to use on the h23a or if they actually came from a seperate mold.

[NoSloCB7]

I'm guessing they come from a seperate mold, becasue the H23 head has a few oil passages in slightly different locations/sizes. A H23 head can be used on the F22AX block, but some modifications have to be done.

[JDMCB3Si]

hey man find me a F22B head also. Also whats the best ecu to use the F22Bs or the F22aX? let me know. hit me up on AIM.


Also what mods are needed for the H23 head swap? I have MANY of them that i can get ahold of.

[NoSloCB7]

If I run across one I'll let you know, as far as the ECU, I'm just going to run the one that was on my F22AX. In regards to the H23 head swap, I'm not really sure what has to be done in order for that swap to work...