Engine Bore

09-21-2006, 09:39 PM
I'll be attending UTI in the coming spring, and I plan to do alot with this car with the stock engine, but Im going to stay away from that psychotic hemi idea i had...

I want to go overbore, but i havent heard much at ALL about that. I mean, the tibs got a REALLY good engine, just lackluster performance because of various bottlenecks.

All-aluminum block & head, if i recall, 9.5:1 compression, Steel connection rods... (correct me if im wrong here, lol)

Hell, at this point, I wanna know if anyones bored out their engine 'cus I wanna bore mine out to a 3.0L, slap some 11:1 compression pistons in there, Prolly high-flow injectors, pulleys, Inevitably swap out the tranny for a 6-speed (Likely to be manual)... But im still doing my side exhaust! lol

I went on a tangent there.... All im asking is "Is it possible to bore out the stock 2.7 to a 3.0 without having to put sleeves in it?"

09-24-2006, 09:54 PM
Delta DOHC V6
Materials: Aluminum block / aluminum cylinder head
Displacement (cc): 2.7 liters (2656cc/162 cubic inches)
Bore x Stroke (mm): 86.7mm x 75.0mm (3.413 inches x 2.954 inches)
Compression Ratio: 10.0:1

the "delta" 2.7 is a reworked 2.5 (which is why you see the 2.5 and 2.7 castings on the block).
http://img84.imageshack.us/img84/7978/delta1to3.jpg (http://imageshack.us)

i pretty sure they both bored and stroked the 2.5 a little bit to get the 2.7, but i can't find where i originally read that.

as you can see, those cylinders are pretty close together (at least i think so). i know there are 2 different lower-compression piston kits avail that require a .017-.020 bore for proper fitment, so there has to be at least that much material left to work with.

from what i've read (on another site by a reputable tuner), the stock rods are good to at least 400hp.

09-26-2006, 04:39 PM
excellent! Thanks for the info! I've been looking EVERYWHERE for detailed engine specs for it...

03-30-2007, 07:01 AM
is there any real differebce with the tiburon and the tuscani

06-20-2009, 01:43 AM
is there any real differebce with the tiburon and the tuscani

just a name they are only called tiburons in america and the 2.7 is a bored out 2.5 so no more boring there if you want power then boost boost boost

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05-23-2010, 10:56 PM
you're stupid.

the G6BA is a SMALL engine, the tiburon platform is horrible, its FWD, it's Hyundai's FIRST attempt at a "sports" car, and their second attempt was slightly more refined (Genesis)
The 2.7L is a bored 2.5L, boring it anymore would mean hitting the veins rendering the engine useless.
You can wetsleve it to 2.9 or 3.0 but it's a stupid idea, boost the G6BA and be happy, it handles 300 easy without any issues, more than that and you'll want to re-ring the pistons to prevent them from locking under high temp applications (aka boosting)

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