popsep3

I know I'm a lil outdated lol
I have a f22b2 full swap, a built h22 ( stock sleeves )
my question is to buld a high compression motor
can u use my f22 crank and the h22 forged piston/rod combo 11.5.1 compression in my f22b??
will that bump compression? the compression calculator is not giving me my answer


the head has sk2 pro 3 cams setup old owner said needed higher compression to really make power.

thank u

gmcuajo1

If your f22 and h22, crank journal, are both same size then you can use your f22 crank and rods and put them in the h22 block. That is the setup I have. Your displacement will bump to 2.3L and definitely will rise compression. Essentially an H23 VTEC. With that the h22 piston will be out of the cilynder. Around 1mm out. You will need to "de-hight" the piston and machine the valve pockets for clearance. Then have to double check the valve and head clearance.

95 h22a are (if I am not mistaken) 55mm size crank journal. The same as similar year f22. Later engine h22a4 I think they are 58mm.

The f22 are 85mm and the h22 are 87mm. 2mm difference.

Another option is to bore the f22 block to 86mm, use k20 pistons, and put the h22 head on it. You will need to turn the k20 pistons 180 degree because they turn ccw.

popsep3

How about using h22 eagle rods in f22 block with f22 crank. Obviously a h22 head. Wat would f22 9.1.1 comp turbo pistons put me at ?

gmcuajo1

h22 rods are too long for f22 crank. Both blocks have similar heights if not the same. F22 stroke is 95mm while h22 are 90.7mm, and f22 rod is 141.5 (same as h23) and h22 rod is 143mm. F22 crank and h22 rods will end with 1.5mm out of the hole piston. Maybe you can try that combition and cut the extra 1.5mm from the piston, or find forged f22 pistons with lower height. Will be a fun combination but may need to spend more $$$.

gmcuajo1

If you want to take all hassle, sleeve the h22, enlarge the bore, and put some forged rods and pistons. Will give you more power than any combination you can do on the f22. At the end, both blocks sleeved with vtec head will do the same. Just the stroke and rod combo will be different.