My friend and I are very interested in building his non-vtec h23 into a h23VTEC. I've read a lot and I get the procedure and what has to be done....well for the most part. This is why I created this thread. I am not very very familiar with Hondas as I own a DSM but I want to give this a shot...I have these questions...

What can I use from the h23?
block? - Should it be bored?
pistons?- should I go forged?
rods?- should I go stronger?
crank? - can this just be cut due to high RPM's that are reachable.

Do I just have to install the h22 head on the h23 block? If so, does that bolt up right and am I going to have head to block issues or do they mount up perfect?

For the V-tec, do I now need to get a hold of the h22 computer? Can I just use the vtec controller (probably not cause all that does is controller it through the computer) So I am going to need the computer right?

Also, what miscellaneous things will I need to be obtaining for the project?
Oil Lines?
Coolant Lines?

Is any of this dramatically different?

I read one thread where a guy changed his h23 to a vtec'd h23, but he used the h22 block? Does that make sense wouldn't he still be displacing 2.2 liters and not 2.3?

Thanks for any help anyone can give me.

 

https://honda-tech.com/zerothread?id=510617

H22 and H23 blocks are EXACTLY the same....even have the same part number. The ONLY difference is one reads H22 on it and the other H23.

 

https://honda-tech.com/zerothread?id=510617