Transferring From H22a to h22a2

jonja · Post by **jonja** » Wed Mar 18, 2015 7:40 am

Will my pistons and all other inside bits fit from h22a jdm black top to h22a2 block?

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Wed Mar 18, 2015 8:01 am

They'll fit, yes - you can interchange pretty much any h22 block, but you'll need to check that the individual bore and piston sizes match as a pair within spec (either by going off the original size identifying letters stamped on them, or by measuring them and checking against the spec in the manual).

Post by **Merlin** » Wed Mar 18, 2015 9:12 am

Pistons will be the only difference. And knock sensor.

jonja · Post by **jonja** » Wed Mar 18, 2015 9:44 am

Have anyone done this before? I need correct information not to lose power

Thing is , in my block nikasil coating is worn out and I need a different block but my pistons and everything else is ok, and that's why I'm asking. I need to find out wich parts I have to leave from h22a2 and what can i take from my h22a black top

Post by **4thgenphil** » Wed Mar 18, 2015 3:57 pm

why not buy another h22a? for the cost of a head gasket set, head skim, bearings and rings it'll probably cost the same.

i also didn't think there is a nikasil coating on the liners?!

i'd be suprised if the pistons are ok is the have don the liners in.

jonja · Post by **jonja** » Wed Mar 18, 2015 4:28 pm

Because I'm over in latvia and only h22 block for sale I found in Lithuania but it's h22a2 but I can get delivery on it cheap

Post by **4thgenphil** » Wed Mar 18, 2015 6:53 pm

jonja wrote:Because I'm over in latvia and only h22 block for sale I found in Lithuania but it's h22a2 but I can get delivery on it cheap

do you know the bore sizes?

mercutio · Post by **mercutio** » Wed Mar 18, 2015 6:57 pm

H22a doesnt have nickosil liners and as phil says if the liners are knackered the pistons and or rings will be in the same condition
H22's have an FRM lining

jonja · Post by **jonja** » Wed Mar 18, 2015 10:58 pm

i was goin to change rings anyway dunno about pistons

thx for info i never checked, just know what garage told me

@4thgenphil I have no idea about bore size

mercutio · Post by **mercutio** » Thu Mar 19, 2015 5:36 pm

take it to someone who knows Honda's buddy they havnt a clue what they are talking about