I have heard that the h22 head flows better then the h23 head.....if so why is so why not.

If it is because the airways are smoother...fine but that will not effect me because I am going for a port and polish job.

Off topic but would a f23 crank work with a h23 block? Also not too worried about the rev limit.

 

Search.

As XES proved, the H23 head CAN be ported and polished enough to flow what a stock H22 head can flow.....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LudeyKrus &raquo;</TD></TR><TR><TD CLASS="quote"> As XES proved, the H23 head CAN be ported and polished enough to flow what a stock H22 head can flow.....</TD></TR></TABLE>

I dont know about proved...at least not with actually bench flow numbers, but I have used a built h23 head, stock h22 head and built h22 head with the exact same block and setup. The h22 head has larger intake and exhaust valves as well as a larger combustion chamber.
You will have to do more than porting and polishing to make it close to an h22...like oversize valves and other jazz. Just swap heads and make more power and save yourself a headache,

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by XES &raquo;</TD></TR><TR><TD CLASS="quote">

I dont know about proved...at least not with actually bench flow numbers, but I have used a built h23 head, stock h22 head and built h22 head with the exact same block and setup. The h22 head has larger intake and exhaust valves as well as a larger combustion chamber.
You will have to do more than porting and polishing to make it close to an h22...like oversize valves and other jazz. Just swap heads and make more power and save yourself a headache,</TD></TR></TABLE>

You know I go years without seeing you on here, then the instant your name gets brought up you're in the thread!

 

besides the 1mm larger valves on the h22 head vs. the h23 i don't know much differance between the two. the combustion chamber on the h23 heads are slightly larger if i remember correctly. i was about to post the same topic here a few days ago and would like to see a few pics of the combustion chambers between the two, the intake and exhaust ports, and if the valves had the same 19 degree angle.

 

also as far as the 97mm crank goes it will swap in if the mains are matched up. some h's have 50mm and 55mm mains. im not sure what the f series are. the f23 rods will have to be used also.

 

F23 is 55mm

 

That should not be a problem using the f23 rods...crower now has after market f23 rods. The reason why I ask...I figured this may be cheaper then buying a stroker kit from crower. I have actually heard that the valves are bigger in the h23 as well...but the cumbustion chamber is smaller in a h23....this is what I am trying to get straight..I have heard conflicting views.

 

valve aren't bigger in the h23. the h22 has all the good stuff.

 

So the h22 is bigger? O.k...well with that being said I was thinking of putting the vtec head on the h23 bottome end not for the use of the vtec but because everything points to the h22 head flowing better and breathing better....I should be able to use the h23 cam gears right?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mugenmarauder &raquo;</TD></TR><TR><TD CLASS="quote">So the h22 is bigger? O.k...well with that being said I was thinking of putting the vtec head on the h23 bottome end not for the use of the vtec but because everything points to the h22 head flowing better and breathing better....I should be able to use the h23 cam gears right?</TD></TR></TABLE>

Cam gears are not the same between the h22 and h23. Nothing that touches the timing belt can be reused between setups (other than the tensioner).

 

I understand that....that is why I was asking if I put a h22 head on a h23 block will I have to or could I use the h23 cams(same as the b series) on the h22 head?