Using H22 crankshaft.. Have questions!

[JDMCB3Si]

Hey guys I REALLY need information on this.

I know using the H22 crank lengthens the stroke, which is what I am looking for. So I need to know whether or not I have to space the head or not?

Please give me some helpful information on this.

ALSO... If anyone knows of a thread on here that is helpful post it. I used the search but came up with USELESS info.

[jumpman83]

not to thread jack or sound newbish, but I didn't know it had a longer stroke, but I did know the H series engines have a bigger bore, so how could it have a bigger bore, longer stroke, and the same 2.2L displacement?

[JDMCB3Si]

its the size of the block that determines the displacement. The bore and stroke determine more of the HP and TQ. Hope that helps

Also yes the stroke on the F22 is shorter than that of the H22

[2.2litrebeater]

its the size of the block that determines the displacement. The bore and stroke determine more of the HP and TQ. Hope that helps

huh? no its (bore area) x (stroke) = displacement

[ACC0RD22]

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

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

http://www.honda-tech.com/zerothread?id=1232811
the h22 in fact has a larger bore . . . but shorter stroke.

[JDMCB3Si]

OK OK OK WAIT!!!!!!! why the hell did everyone say that the H22 cranks lengthened the stroke?

[T3h HoT!!]

theres a mag article about guy that buildt an f22 using h22 crankshaft and if im not mistaken he used h23 rods? and h22 pistons. he called it rev friendly sohc. i dont noe which mag or were it's at but as soon as i find it i'll post it up.

[gloryaccordy]

Yeah the shorter H22 crank is more rev friendly, but with F22 stuff it will lose compression. You should get the H22 slugs and rods too...what are your plans exactly?

[HondaFan81]

OK OK OK WAIT!!!!!!! why the hell did everyone say that the H22 cranks lengthened the stroke?

H22 lengthens the stroke when compared to a F20a, if that's what you're comparing it to. However, it does not when compared to F22

F20a = 88mm stroke
H22 = 90.7mm stroke
F22 = 95mm stroke

[T3h HoT!!]

so then a h22 crankshaft using h23 rods and low comp pistons would make a sick turbo motor right?? im guessing the comp. ratio would be something like 8.0 to 1 right??

i found out who the guy is that stuffed a h22 crank into his f22a1.. his name's bisi... and he's a pro drag racer. he's registered on h-t but he's never on.. alot of the guys at honda society seem to noe him personally, his cars running 390 whp, with a f22a1/ h22 crank and somekind of internals, but he's ALL MOTOR!! bisimoto.com

[d112crzy]

yeah, bisi is a genious man, hes done so many things with the F series engine that no one thought was possible.

[d112crzy]

i was bored, and i did some math, and if im wrong in something, can some pls correct me? thx

what i did was figure out the rod ratio of the combination of the h22 stroke and the h23 rods.

using the formula rod length/stroke i got:

141.5288/90.7= ~1.56

now, the ideal r/s ratio is 1.75, which when an engines r/s is close to that, it will be a able to rev better. so yes, the combination of the h22 crank and the h23 rods will allow the f22 to rev higher, but in the process, since we decreased(destroked) the engine, we lose low end power(torque).

i just felt like doing this to let everyone know that yes it will work, and how it will work, that way ppl can stop making threads about this.

if im wrong anywhere, someone pls correct me. thx

jdmcord aka jose

[gloryaccordy]

Not too much displacement though...it's like 60cc. The F22's really like an F21 stock...

[HondaFan81]

i was bored, and i did some math, and if im wrong in something, can some pls correct me? thx

what i did was figure out the rod ratio of the combination of the h22 stroke and the h23 rods.

using the formula rod length/stroke i got:

141.5288/90.7= ~1.56

now, the ideal r/s ratio is 1.75, which when an engines r/s is close to that, it will be a able to rev better. so yes, the combination of the h22 crank and the h23 rods will allow the f22 to rev higher, but in the process, since we decreased(destroked) the engine, we lose low end power(torque).

i just felt like doing this to let everyone know that yes it will work, and how it will work, that way ppl can stop making threads about this.

if im wrong anywhere, someone pls correct me. thx

jdmcord aka jose

You're right in your math, but who said ideal rod ratio is 1.75?? It all depends on what your application is and how you want your engine to perform.

[HondaFan81]

Not too much displacement though...it's like 60cc. The F22's really like an F21 stock...

F22ax is 2156.31 cc (nominal)