what about the b20 lower half and b18 upper?

 

I would think the problem you would run into is that a SOHC valvetrain is not good for high revving and will limit how high you can rev. Granted we are talking about beefing up the internals, but given the cost of all this it's probably much easier and reliable to do a swap. Another thing to remember is for most of us we have 100k plus on our motors, I rather have a lower mileage h22.

 

Only interchangables I'm currently aware of are H23 rods on F22 blocks as they are the same length and size. Not sure if F23 piston will work in F22. Deck height may be taller on an F23 then an F22. As F23 has 2mm longer stroke then F22. In addition, F23 has 86mm bore F22 has 85mm not sure you can punch an F22 out that far.

As for high milage, rebuilding your engine will make the milage issue a moot point if you are doing a bore and crank pollish and replacing bearings. The point I have been trying to make is I don't think a fully ported head and new aftermarket pistons on and F-series is really all that expensive compared to purchasing and installing an H22 engine and trans. Will the power be equivalent, maybe? This is all based on B16 vs. D16modified data. As for the higher rpm limit of SOHC cars--D16 modifieds do it all the time. Couldn't see why an F-series couldn't gain a lick or 2 of rpm.