hey, just a quick question for those that have experience with this, aside from the different displacements, what are the differences between the H23 and DOHC F22B? I know many parts are interchangeable, but are they really nearly the same engine?

Which one would be better, easier, and cheaper (more readily available non custom made parts), to build for boost and put in an accord (specifically a 94lx). I know the Jdm DOHC F22B is a good candidate for turbo, but I have not heard much of using the H23 in accords. I would think the slight torque advantage would be a plus, but there may be something I'm missing. Let me know what yall think about this.

PS... I searched before asking
PPS... I want nothing to do with an H22, so please dont suggest that

 

h23 long blocks are pretty cheap. h23 aftermarket support is far superior than f22b as well as oem parts. for example, they wont have a t-belt for it, you have to use a GSR/ITR belt and what not. also the f22b uses a p39 ecu that are kinda hard to get if you dont get it with the motor but can also use an h23 p14 ecu but then you would have to wire in a knock sensor. if you have a 5th gen the map sensor on the f22b is firewall mounted and not on tb, you will also need f22a water pump, and a 92-96 lude driverside mount.

f22b has slightly less tq and lower compression ratio, and a smaller bore but its still an awesome motor, especially to boost. back in the day it wasnt uncommon to find them for like $500 but i guess the demand on them have gone up.

 

thanks a lot bonestock, that helped a lot!

 

doesnt his accord already have an f22?

i'd actually suggest the h23 because it has the obvious advantages of better breathing and a larger displacment off the bat.

plus the h23 trannies (i believe) are stronger and can take more punishment.


h23 in an accord is not as common as an h22, and boosted i think it's rolly oneof the best engines you can pick to ut in your car.

good luck with the hunt,
cya, sherwood

 

h23 is better in torque.

the best engine swap would be f23A1 with h23 head...pumped out 185/185 to the wheels with bolts ons and cams.

 

he could pull a h22/h23 frank too and get major numbers like that, but i think that the most reliable and easiest as well as original choice would be the h23 striaight up.

boost it and it will be sick.

 

any idea how much that frankenstein swap will cost??

 

hes talking about the JDM F22B DOHC non-vtec that came in preludes in japan.

not the f22b1/f22b2 we have here in the states.


no problem, so what are you gonna get? id go with which ever you can get cheaper. but if you plan to build it id go h23.

 

Im going to go with the H23. I was originally looking to the DOHC F22, but then it dawned on me that the H23 was a great choice too, and has a bit more potential for torque. I had just wanted to make sure there were no skeletons in the closet with this choice. Thanks a ton for the info. Ill work on getting this put in, drive it for a while, build up the head, then while I'm out on cruise (Navy) Ill take the block out and have it done up. Then its turbo time. It will take a while, but most things that are worth doing usually do. Thanks

 

i'm not sure if the h23 has frm sleeves or not but if it does the block will need to be resleeved to allow for forged pistons.

and remember that turbo is all in the tune and that you can run a turbo with higher compression internals, it's just there is less room for error in the tune.