Currently, I have my JDM H22A cylinder head completely torn apart. I'll be porting, polishing, and portmatching the cylinder head myself. I'm currently looking into aftermarket cams, valves, valve springs & retainers. There are so many options; it's hard to decide on which one. Any advice or good deals would be appreciated.

Here is a pic of the stock intake port. I was rather surprised to see that the H22A intake plunum to cylinder head ports are almost perfectly port matched from the factory. Not much port matching to be done here. You can also see the casting flaws on the side of the intake port.


These pics are results of the first stages of port-polishing. The rough casting flaws of the intake ports are grinded away.




Peace.

 

So far so good...Keep us posted

 

Two comments, I hope your not doing the grinding with that gasket on there, and secondly, somewhere in MN, Minnesota? Where are you at? St. Paul here. I'm in the process of having my H22A built as well. Hope to have the motor back in the car by the 4th of July.

 

I suggest ferrea valves, they are really strong, and the best IMO. I wouldn't suggest Skunk2's bc they sucked(for me) But otehr Skunk2 stuff is good (cams, cam gears, valve springs, retainers) Depends on how much money you want to spend, and how much power you want to make. Is this gonna be a street car or a race car?

 

also to note:

I personally did a head before, attempting this without a flowbench is hard, also doing the gasket matching like you did, won`t yeild but any effect, if so can actually lose power, if incorrectly done, the shape of the port is important, not the size...

the most cruitial part of the port is the bowl, and the seat transition... i learned this with the flowbench, the gasket matching is only cruitial if you blend the port along with the intake manifold, but that will also lose velocity and effect low number if you put it to big....

my low numbers suffered 10cfm by learning, but my upper numbers gained 10cfm.. so be careful!!!

try gaining everywhere not must high lift numbers because most stock cams won`t extract power in that area...

after i spend alot of man hours in my head, i got a portflow head, and how i can clearly `SEE` where i went wrong.. now i could duplicate it, but since my next motor won`t be an h22a and most likely A k20A, i`ll have another head done by them because the port work won`t be the same `type`....

ps i got `ferrea valves`and their quality is awesome, can`t compare to skunk2`s as i never had some.

 

I won't be getting too crazy about removing too much material. I'm just trying to smooth out the castings, hopefully, it'll be for the good of things. I'll post pics as I progress.

So far, thanks for the pointers and suggestions.

 

Here are a couple of pics from the finished INTAKE ports.





If you have an account with imagestation.com you can do a search for "H22A cylinder head", there, you will find a lot more pics.