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View Full Version : Difference between H22 and H22a?


aussie_cb7
03-12-2008, 02:18 PM
hey guys just wondering if you could explain to me what the differences are between the H22 and H22a? i realise that the H22 is the US version and the H22a is the japanese version but what are the mechanical differences? the reason i am asking is that i would like to know if i can use the same parts for both? e.g. rods, pistons, sleeves? cheers
aaronng
03-12-2008, 02:23 PM
The US tend to omit the "a1" when they quote engine numbers
aussie_cb7
03-12-2008, 03:00 PM
The US tend to omit the "a1" when they quote engine numbers

so not any real difference then?
Petronas
03-12-2008, 03:04 PM
Dunno if this helps...
http://en.wikipedia.org/wiki/H22a
trism
03-12-2008, 03:04 PM
no

bu the number deisgnates what model it was in

h22a1, h22a4, 5, 7, 8 are what cars, and what market

slight differences in power and appearence, but not much
aaronng
03-12-2008, 03:46 PM
so not any real difference then?

There is still a difference. Like what trism said, there are many variants of h22a. Japan also has a few versions, with the h22a from the Type S having nicer parts than the h22a from a VTIR. The problem with Japan is that every engine is a "h22a". They don't have the last number to differentiate between variants like the other countries.
Tarquin
03-12-2008, 06:07 PM
there are also engines labeled h22z, sumfin else to throw in2 the mix, same parts though
aussie_cb7
03-12-2008, 06:17 PM
so all h22's use the same internals yes? just different models for different cars?
Tarquin
03-12-2008, 06:28 PM
as far as i no, i was shopin around for a H22a for my civic for a while and never noticed or was informed of differences between parts in all the H22a engines, thats just in my experience
trism
03-12-2008, 07:59 PM
I think it's just the tune, ad maybe the cams change
mr180sx
04-12-2008, 08:46 AM
I think it's just the tune, ad maybe the cams change

compression changes too!!
aussie_cb7
04-12-2008, 04:43 PM
compression changes too!!

ok so if i was to get a set of US CP low compression turbo pistons and a set of US eagle H beam rods both for H22, i could use them on my AUS H22a correct and it will not matter?
drated
05-12-2008, 09:21 AM
im sure h22z has a lil bit more power
trism
05-12-2008, 09:31 AM
why are you sure?
aussie_cb7
05-12-2008, 03:09 PM
im sure h22z has a lil bit more power

thats ok i won't be getting a 22z anyways, think i will stick to the 22a for now. cheers everyone for the help!