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idk about h22a, but its not recommended to bore the stock sleeves. it would be better to get the block resleeved with stronger sleeves. and also you dont want to max bore it then turbo it because then the sleeves would be really weak and probably couldnt handle the boost safely.
ill give you an example with the b series. they say if you are going to run high boost, to keep the bore under 84mm, stock is 81mm. but if your going all motor you can go to 86mm (not sure about all motor bore) but with teh walls being thin it couldnt handle alot of boost safely.
so i wouldnt think about max bore with max boost
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