Difference between H22 and H22a?

[aussie_cb7]

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]

The US tend to omit the "a1" when they quote engine numbers

[aussie_cb7]

The US tend to omit the "a1" when they quote engine numbers

so not any real difference then?

[Petronas]

Dunno if this helps...
http://en.wikipedia.org/wiki/H22a

[trism]

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]

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]

there are also engines labeled h22z, sumfin else to throw in2 the mix, same parts though

[aussie_cb7]

so all h22's use the same internals yes? just different models for different cars?

[Tarquin]

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]

I think it's just the tune, ad maybe the cams change

[mr180sx]

I think it's just the tune, ad maybe the cams change

compression changes too!!

[aussie_cb7]

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?