the fact of the matter is, all motors break if you abuse them. if you abuse an sr, you’ll break it. you abuse an ka, you’ll break it. if turbo’ing your KA makes you happy, go right ahead an do it. you’re right that no matter what, you have to buy the same shit whether you turbo the KA, or swap an SR motor and want to make tons of horsepower. you’ll still have to buy turbo upgrades, injectors, air flow meter, exhaust, fuel pump, clutch, blah blah blah. i’m not gonna say that the KA absolutely sucks, it does have some good points. i personally think the valvetrain design is way better than the SR, although, i’d like it better if it were shim-under-bucket, not shim-over-bucket. it’s has way less of a chance to fail over the rocker arm set up that the SR runs. in fact, i think that is one of the SR’s downfalls is the valvetrain design, although with good valve springs, and rocker arm stoppers, i never had trouble spinning my motor to 8300 rpms.
my main complaints with the KA is the headgasket issue. if these were failing on turbo’d cars, i wouldn’t see a problem. hell, the stock SR headgasket can fail around 300hp. i just see a lot of stock KA’s that have had blown headgasket, especially the KA24E. my second problem is the bottom end and bearing issues. maybe it is a lack of maintenence, i’m not sure. but i’ve pulled damn near 12-15 KA’s that have had spun bearings, rod’s blown out through the oil pan, etc. and third is the lack of aftermarket. yes, you can buy engine internals, blah blah blah, but there is no where near the choices for parts like cams, intake manifolds, exhaust manifold, headgaskets<–what’s everyone use, cometic? etc.
I do like the fact the KA has the 2.4L displacement, and the iron block. its a damn shame though that it is a 2.4L, cus you can’t rev it and take advantage of the good valvetrain it has. the block should be able to handle a good bit of power, but then you have to do pistons and rods…
reasons i like the SR: good parts availability, stout short block, way better ignition system, computer knows what boost is(yet, you can do the same thing by chipping the KA ecu), hasn’t really given me any problems. i think overall it just seems like a more solid motor than the KA. if they would have built it with a valvetrain similar to the RB engine, then i really wouldn’t have any complaints with it. as far it being an aluminum block, i have yet to see that being a problem, the records at like what? 545hp?
anyway, where does all my rambling lead to? if you like your KA so much…turbo it, who cares? just cus we don’t like to do that, doesn’t mean you can’t. i hope for your sake it all works out good for you and you have no problems. just get the ecu tuned for it and plenty of fuel and you should be alright…as long as the headgasket doesn’t go…hehehehe