jellyroll

I have read for hours upon hours trying to get all the information i can get and i think i have it figured out (mabey) i am using my f23 crank and rods along with usdm h22 pistons (10-1) and everything sounds like its gonna line up great cause the f22/h23 are almost the same just .057 smaller in rod lenght and stroke length together then the f series. either way compression would mabey be a tiny tiny bit higher .. but here is my question .. (if everythig so far sounds sorta on the right track) im trying to figure out the compression it will be running ... i have been told that with jdm h22 pistons and a 30k decked head it would be 11.5-1 and also i have read that putting h22 pistons into a h23 you run 11-1 with usdm 11.5-1 jdm ect.... i am just lost all around .. not good with math and i just have no idea .. so if anyone knows how to figure it out or the compression ratio of a h22 with h23 crank/rods wit h22 pistons (jdm or usdm) or any information on this subject at all please help me out .. cause i sorta want to no if i should deck my head or not thanks bryce ...

(THIS IS INFO THAT I FOUND THAT MIGHT HELP) thanks!!

Well, since I started this a while back in another thread I figured it was about time to finish what I started and make a definitive answer thread for anyone looking for piston, rod, crank and block specs or compression ratios of various H, F or H/F combinations.
Anything anyone wants to add to this thread post up whatever info or specs you have and Ill add it to this original post. I am putting up only what i have personally measured and or quoted direct from the helms manual. I dont want this thread to get cluttered with he said she said specs so Im asking that we limit contributions to first hand spec acquisitions and or helms manual references only. Whatever I have missed or havent measured myself, please feel free to post and contribute. The items i have yet to measure or discover I will leave blank until myself or another member provides the information.
Im going to start by adding a few specs that I can think of off the top of my head now, I will return later tonight and add some more info which will include a few CR calculations.
If I leave something blank and you have the information/specs plase post it up and I will edit this post and ad the new additions to the thread.
Blocks
Block Type
H22A4 Block = Open Deck
H22A block = Closed Deck
H23A block = Open Deck
H23A1 block = Closed Deck
F22 block = Open Deck
F23 block = Open Deck
F20B block = Open Deck
Deck Height
H22A4 Block = 8.643
H22A block = 8.643
H23A block = 8.643
H23A1 block = 8.643
F22 block = 8.643
F23 block = 8.643
F20B block = 8.643
Bore
H22A4 Block = 87mm/3.425
H22A block = 87mm/3.425
H23A block = 87mm/3.425
H23A1 block = 87mm/3.425
F22 block = 85mm/3.346
F23 block = 86mm/3.385
F20B = 85mm/3.346
Note:
Due to various available piston diameters (A/B) actual bore diameter may vary
Rods
Length
H22A4 = 5.633
H22A = 5.633
H23A = 5.572
H23A1 = 5.572
F22 = 5.572
F23 = 5.551
F20B = 5.709
Width
H22A4 = .935
H22A = .935
H23A = .935
H23A1 = .935
F22 = .935
F23 = .780
F20B = .935
BE Bore
H22A4 = 2.008
H22A = 2.008
H23A = 2.008
H23A1 = 2.008
F22 = 2.008
F23 = 1.890
F20B = 1.890
Pin Bore
H22A4 =
H22A = .8649-.8654
H23A =
H23A1 = .8649-.8654
F22 = .8649-.8654
F23 = .8649-.8654
F20B =
Pistons
Bore
H22A4 = 87mm/3.425
H22A = 87mm/3.425
H23A = 87mm/3.425
H23A1 = 87mm/3.425
F22 = 85mm/3.346
F23 = 86mm/3.385
F20B = 85mm/3.346
Note:
actual diameter may vary depending on code of piston (ie, A <IMG SRC="http://style_emoticons/<#EMO_DIR#>/cool.gif" BORDER="0">
Compression Height
H22A4 = 1.221
H22A = 1.221
H23A = 1.203
H23A1 = 1.203
F22A1 = 1.203
F22A4 = 1.203
F23A1 = 1.181
F20B = 1.221
Dome Volume
H22A4 =
H22A =
H23A =
H23A1 =
F22A1 =
F22A4 =
F23A1 =
F23A4 =
F23A5 = -18cc
F20B =
Wrist Pin Diameter
H22A4 = .866
H22A = .866
H23A = .866
H23A1 = .866
F22 = .866
F23 = .866
F20B = .866
Crankshafts
Stroke
H22A4 = 90.7mm/3.570
H22A = 90.7mm/3.570
H23A = 95mm/3.740
H23A1 = 95mm/3.740
F22 = 95mm/3.740
F23 = 97mm/3.818
F20B = 88mm/3.464
Main Journal Diameter
H22A4 = 55mm
H22A4 = 50mm (1997 Only)
H22A = 50mm
H23A = 55mm
H23A1 = 50mm
F22 = 50mm
F23 = 55mm
F20B = 55mm
Rod Journal Diameter
H22A4 = 1.888
H22A = 1.888
H23A = 1.888
H23A1 = 1.888
F22 = 1.888
F23 = 1.771
F20B = 1.771
Cylinder Heads
Combustion Chamber Volume
H22A4 = 53.8cc
H22A = 53.8cc
H23A = 53.8cc
H23A1 = 50cc
F22A1 = 50cc
F22A4 = 50cc
F23A1 = 50cc
F23A4 = 50cc
F23A5 = 50cc
F20B =
Intake Valve Diameter
H22A4 = 35mm
H22A = 35mm
H23A = 35mm
H23A1 = 34mm
F22 = 34mm
F23 = 34mm
F20B = 34mm
Exhaust Valve Diameter
H22A4 = 30mm
H22A = 30mm
H23A = 30mm
H23A1 = 29mm
F22 = 29mm
F23 = 29mm
F20B = 29mm
Head Gaskets
Bore
H22A4 = 88mm
H22A = 88mm
H23A = 88mm
H23A1 = 88mm
F22 = 86mm
F23 = 87mm
F20B = 86mm
Thickness
H22A4 = .026
H22A = .026
H23A = .026
H23A1 = .026
F22 = .026
F23 = .026
F20B = .026
Note:
Gasket thickness measured after crush
Bearings
Main Bearing Thickness
Blue: 2.013 - 2.010mm / 0.0793 - 0.0791
Black: 2.010 - 2.007mm / 0.0791 - 0.0790
Brown: 2.007 - 2.004mm / 0.0790 - 0.0789
Green: 2.004 - 2.001mm / 0.0789 - 0.0788
Yellow: 2.001 - 1.998mm / 0.0788 - 0.0787
Pink: 1.998 - 1.995mm / 0.0787 - 0.0785
Red: 1.995 - 1.992mm / 0.0785 - 0.0783
Rod Bearing Thickness
Blue: 1.510 - 1.507mm / 0.0594 - 0.0593
Black: 1.507 - 1.504mm / 0.0593 - 0.0592
Brown: 1.504 - 1.501mm / 0.0592 - 0.0591
Green: 1.501 - 1.498mm / 0.0591 - 0.0590
Yellow: 1.498 - 1.495mm / 0.0590 - 0.0589
Pink: 1.495 - 1.492mm / 0.0589 - 0.0587
Red: 1.492 - 1.489mm / 0.0587 - 0.0586
Main Bearing Width
H22A4 = .784
H22A = .784
H23A = .784
H23A1 = .784
F22A1 = .784
F22A4= .784
F23A1 = .784
F23A4 = .784
F23A5 = .784
F20B = .784
Rod Bearing Width
H22A4 = .762
H22A = .762
H23A = .762
H23A1 = .762
F22A1 = .762
F22A4 = .762
F23A1 = .609
F23A4 = .609
F23A5 = .609
F20B = .762

Hello I spun a rod bearing so time for a new build up. I have some questions. TIA
Will any F22 crank and rods work and are they all 50mm mains and 95mm stroke?
H23A1 usdm 92-95 prelude will work? 50mm mains?
93 JDM H22A 50mm mains?
Can I get away with re ringing the JDM H22 pistons with no hone? how?
The cheapest F22 is obviously the one in the 90-93 accords F22A1-6
The H23 and F22 are they free floating or pressed in?

Build up:

F22/H23 crank and rods balanced
honda bearings
honda piston re rings on the JDM H22
compression should be right around 11.5-1 with 30k mill of the head

alterdcreations

first the f23 crank it different that the f22/h23 crank. it has larger mains and a longer stroke
if your using a f22/h23 crank then your compression will go up one point.

https://honda-tech.com/zerothread/1822177
theis is some details in their


https://honda-tech.com/zerothread?id=1818641

and here

jellyroll

so you said the main berings are bigger in the f23.. so does that mean that the info that i have is false cause it shows that they both are .784????

The_Head

He's talking aboutthe main journals (a.k.a. main bearings)The diameter of the F23 cranks mains are 55 mm, the F22/H23 & 92-97 H22A cranks have 50 mm mains.