t28 is too big, i went in a a15 turbo ute with t28 and it didnt hit boost till 4500 rpm. was so crap.

ok guess its a T25 or a kkk turbo off a 1.8 Vw( i hear they r fairly small n spool good)

i gotta forester turbo sitting in me shed doin nothin, it looks friggin tiny. thinkin bout puttin it on my car down the track once i get my injection setup back here

On a A12 I wouldn't be going any bigger than the T25 from a CA18DET unless you want to rev the living daylights out of it. Damo is right re. the life expectancy of a bush bearing turbo at 20 psi. They don't like those sort of boost levels at all. Do you need to run that much boost to achieve your power goal?
Matty

my t25 works well on my a14......will come on boost really well....will last for a bit on 10psi but feels like it wants more at 6000rpm......

but im very very pleased with t25 on a14.......t3 is way to massive for a12.... depends what racing you are doin also ....are there alot of straights or do you want low down power......

Your best turbo will be a T25/T28 off a skyline gtr, same A/R's as the CA but a totaly defferant turbo.... These little babies will pull 18psi no probs...... and if you halve the capacity of an rb26dett (twin turbo) you get 1300cc.....
You should get one of these off ebay for no more than $250US

or get one off me....lol

yeh t28 off gtr is not a bad idea.......

but again i still think it depends on the type of racing you are doin

its circuit racing..not much long straights. I would low down torque but still be able to keep boost at 8500rpm.

well the 20psi is just an 'idea' i looking for around 190-200 hp at the flywheel.

man thats a fair bit of hp outa a lil a12..... id say yeh t25 or t28...both would be good.....

I've got a pair off a 1993 GT-R pm me if you want more info.