for the first part i presume its a case of mounting the knuckle securely in a vice and hitting it out with a large hammer and a suitable drift. i guess if it doesnt budge you could apply some heat with a suitable blow lamp?
this is what i use and it works fine (12 quid from b&q)
obviously i didnt have to do this first step as my ball joints were removed
i cleaned the hole and removed any traces of dirt and general crap that had gotten in there since the removal of the ball joints and the transit to me.
next i got my ball joints (qh ones, supposedly the same for civic and integra) these were around 13 quid each or so and i removed from the packaging and put them in the freezer for half hour or so while i went about wire brushing and cleaning the knuckles and preparing it in the vice so it was secured well.
next i used the said blow lamp
and applied heat for around 5-10 minutes till the arm was getting very warm (lamp wasnt good enough to make it glow red), it was obvious it was getting hot due to small fragments of the metal glowing orange when heat was applied.
i left my dad to continue adding heat whilst i popped to the freezer to get a ball joint, i covered the boot in tape to protect it a touch from the heat as i pressed it in.
as if by magic it pushed into the hole with my finger as if the hole was way too big. at this point just to make sure i got a 34mm socket and placed on the top of the ball joint and hit it a few times to make sure it was fully seated
by this time the arm had cooled enough to have held the joint in, i left it to cool down then proceeded to do the next arm
very easy, i was suprised how little effort was required to push the joint in.
