i know there are topics in the FAQ about the g series but none apply to the f22b1 block. im just trying to figure out what differences there are between the blocks of the obd1 f22b1 and f23a1 so if some of the h22 parts im selling dont find another home i know what to do with them. all i really know about the f23 is that the stroke is a little longer than on my motor. if this is the only difference i should be able to follow the thread in the FAQ exactly. are there any other things i should look out for?

 

Bore

F22 block = 85mm/3.346
F23 block = 86mm/3.385

Rod Length

F22 = 5.572
F23 = 5.551

Rod Width

F22 = .935
F23 = .780

BE Bore

F22 = 2.008
F23 = 1.890

Piston Compression Height

F22A1 = 1.203
F22A4 = 1.203
F23A1 = 1.181


Stroke

F22 = 95mm/3.740
F23 = 97mm/3.818

Mains Diameter

F22 = 50mm
F23 = 55mm

Rod Journal Diameter

F22 = 1.888
F23 = 1.771

Where you could've searched - https://honda-tech.com/zerothread?id=1232811

 

thanks, but what about mounting points for pumps, pullies, and external things (i.e. alternator) im probably going to need to use different belts too right?

 

They should all fit 98% perfect. Belts, shouldn't be far off either. I have read that with the non-vtec G23 (F23 block, H23 head) you need a GSR timing belt.

 

i figured they wouldnt have changed it too much but i have no experience with the f23 so i wasnt sure. thanks

 

truly a worthwhile thread to look at dont forget to do a h22/h23 soon...