Does anyone on here know what the difference between the H22A head and the H23A head is? Things like intake size, bolt patterns and such. Any help would be great.

 

h23a vtec? non-vtec?

 

you must be specific here are you talking aobut the h22a1 head and the h23a1 head or the jdm h22a and the jdm h23a?

 

the h23a is non vetc. talking about the h22a1 and the h23a1.

 

are you thinking the H23A1 is VTEC?? If so it isn't

 

The h22 flows a bit better then the h23

 

I know the H23A1 is not vtec. my friend wants to get a jackson racing supercharger from an h22a1 and put it on his h23a1.

 

you will probably never get an h23a1 head to work with a JR blower, i think there is not only clearence issues with the firewall but also porblems with the flange being different. if some how you find a 4th gen vtec lude with a jr blower the easiest thing to do would be an h23/vtec which is take your stock h23 bottom end and bolt up a h22 head , and leave the stock h23 pistons and that should yeild about a 9.3:1 cr which would be good for boosting. but agian i dunno if you can get a blower to fit in a 4th gen, but if you can h23/vtec with jrsc , now that would be sick . im glad i thought of it

edit : https://honda-tech.com/zerothread?id=311695 like i said , no room

edit #2 : you friend is probably taking a jrsc from an h22a4, not and h22a1