jdm92_accorn : 1992 Accord LX

[GhostAccord]

IIRC you would need to mill the head something like 0.27" to completely get rid of the ridge.

If you are talking about a bore to combustion chamber difference of 1mm, or a ridge of 0.5mm (0.02"). I wouldn't worry about it with your particular build.

[jdm92_accorn]

im sure. people can say what they want to the results dont lie. im running 28deg timing at WOT and can go as high as 34deg without detonation it just stops building power. if this ridge was that big of a deal it would be detonating at 28 and coming apart at 34. if you are planning to run 12:1 you may want to start looking into it but at 11.5 or less you are fine. if you plan to run less than 11:1 from 85mm to 86mm with that head you should be ok. 87mm to 90mm with that head it may be benificial. that head combustion chamber seems to be quite different than the f22a head.
f22a head

your head


yours seems to be slightly deeper, probably due to the different valve angle, and the spark plug location seems different to me. depending on cost go for it, chamfering cant hurt. im just stating i've never had issues with detonation from not chamfering on engines with less than 2mm over bore on stock heads. hell look at all the k20/k24 guys, they dont chamfer the heads with 88mm pistons and a k20a2 head.

[jdm92_accorn]

Found a cool new feature the other weekend at the track on my gps. I ran a 13.858 at the track and my gps read this

Its fairly accurate.

[sepulveda87]

jdm92accorn

yes i made them fit lol. i didnt shave the clip in the back. But i did notice that when rev the motor when its stationary, about 6k rpm, and it comes back down, it wants to die. now i am thinking its because i need to retune it for the rdx injectors since it is more volume?

[jdm92_accorn]

you definitely need a retune, make sure your tuner takes a look at the voltage offset tables aswell. they will be different for the rdx injectors.

[sepulveda87]

Will do. The guys at Inline racing are pretty damn good at what they do.

[jdm92_accorn]

Well, pulling the motor out soon. I'm going to start building the f23 bottom end so I ordered another f22 bottom end to run in the mean time from jdmenginedepot. It sucks to loose some displacement for a little while but after the true 2.3 liter f23 bottom end is in it then I can sleeve the f22 bottom and go true 2.4 . I'll post results with the f22 bottom to show displacement differences. I'm actually using a f22b dohc bottom so my compression will be the same. This way it will show the exact comparison of bore and stroke.

[jdm92_accorn]

i plan to cc the pistons and the combustion chamber. i want definite data on the the dohc head and pistons.

[Mishakol129]

It had a crack in it. I did use the f23 alternator bracket though. Much simpler and a little lighter. I'm just ready to put the head on. I'm waiting on new retainers and keepers and the cam. Its taking way too long or I'm impatient, either way I'm getting closer and more excited to see what it makes.

Been researching on which alternator/bracket to use for this and found out that the original f22 bracket is the most suitable option with a regular style header since part of the bracket (the aluminum part) blocks the header and you have to shave it off. That was from an H23 site though... This was brought up because I ended up selling the f23 alternator and needed to know for sure if I should keep it or not. Based on my research, no. It wouldn't be the best option.

[jdm92_accorn]

I didn't grind mine at all but every unit is not going to be exactly the same.

[jdm92_accorn]

well i measured the head cc and while i was at it i measured the plenum volume of the f22b dohc manifold along with runner size and length.

runner length: 12" without IAB plate
runner diameter: 35.5mm*50mm
plenum volume: 1450cc
combustion chamber: 50cc
piston dish/dome: -11.5cc
compression height: 30.55mm
rod length: 141.5mm
im using the obd2 version and i thought it was worth noting it has an aluminum baffled oil pan with windage tray. this seems to be the mac of the 2.2 liter f-series bottom ends. im planning to put new bearings in it so i figured why not measure some things while i had them apart. im actually thinking about just slapping the stock f22b head with stock intake and exhaust manifolds on and run it with the factory airbox in the 93 coupe. only mods being a 2.3 liter dohc f-series and a tune. im curious how well oem components work.

[Mishakol129]

well i measured the head cc and while i was at it i measured the plenum volume of the f22b dohc manifold along with runner size and length.

runner length: 12" without IAB plate
runner diameter: 35.5mm*50mm
plenum volume: 1450cc
combustion chamber: 50cc
piston dish/dome: -11.5cc
compression height: 30.55mm
rod length: 141.5mm
im using the obd2 version and i thought it was worth noting it has an aluminum baffled oil pan with windage tray. this seems to be the mac of the 2.2 liter f-series bottom ends. im planning to put new bearings in it so i figured why not measure some things while i had them apart. im actually thinking about just slapping the stock f22b head with stock intake and exhaust manifolds on and run it with the factory airbox in the 93 coupe. only mods being a 2.3 liter dohc f-series and a tune. im curious how well oem components work.

Dude, you found a f22 dohc head? Good for you, you're one of the lucky ones. I have had mine for about 2 months now and its going strong. Timing components are a bit off though, I'm using the h23 belt and f22 water pump. Runs but not quite right. What it needs is the JDM water pump with 19 teeth. I found a seller on eBay located in Florida who has this pump, took me a while to find him. They sell NPW water pumps which I heard is OEM supplier of Honda. Then you use the Gates T132 belt.
You then use the H23 timing sprocket and the H23/H22 power steering pump/pressure hose (I think the H23 PS belt as well, IDK). If you don't, the sohc pump will make small dents in your hood. So that's about it for OEM components. Its a really simple swap once you get all the right parts.

[jdm92_accorn]

i actually got a complete swap just for the bottom end. it has an uncut upper p/s hose, complete accessories, uncut engine harness. it is everything you need to drop it into a obd2 car and run, i just wanted the short block though. im just looking into what to do with all my spare parts now.

[jdm92_accorn]

This thing is so clean

Great condition, barely any wear on anything.




The engine is out of an 2001 prelude si



I thought about selling all the stuff to do the head swap but I don't know yet.

[Mishakol129]

Wow, it is clean. What's the compression ratio on those pistons, isn't it like 9:5:1? If you parted that bottom end out I'm sure someone would pay top dollar for the pistons alone, being that they are so rare and are basically the only cast piston in the world with higher compression for f22 engines, other than the F20B.