andy1234

Hello all,
Im in the process of buying a Blobeye or later STI. Whats the opinion, possibly from people who have owned both, of the 2.5 over the 2.0?
I originally wanted to stick with a 2.0 but there are a few of the hawkeye 2.5 STIs available for me to take a look at.
Which option is best for performance upgrades reliability etc etc.
Cheers
Andy

Scooby Dan

Hawkeye is cheaper to get to around 400 bhp but anything beyond that it would be advisable to rebuild with at least forged pistons and possibly rods. 2.0 litres appear to be stronger but will struggle to get past 350 bhp without fitting a bigger turbo.
It also depends what you want from the car, a 2.0 litre likes to be revved whereas a 2.5 has lots more low down torque but doesn't rev as well as a 2.0.

andy1234

Thanks Dan,
Only interested in going up to 330ish, so remap, decat etc, just the basics.

KAS35RSTI

iTrader: (73)

2.5 will produce more torque & will feel more responsive.

stevie1982

iTrader: (16)

sorry driven and owned both 2.0ltrs and 2.5's the common thing that is said is the and agreed by most that the 2.5 will produce more low down torque and produces more power but in my opinion dont listen about the 2.5's dont like to rev as they can and do simple. for me it would be a 2.5 as a sim-ple decat, pannel filter, uprated fuel pump and remap can see some very impressive results similar bhp to a 2.0ktr but a shed load more torque and thats what gives that punch into the seat feeling.

also a hawkeye looks the nuts

happydude303

iTrader: (1)

get a twin scroll jap spec car you love it 350 bhp easy with a nice quick spool up and a rev engine

bigsinky

2.2 is actually the more reliable engine. future proof yourself. 330 aint gonna be enough for you LOL

Badbird

agreed that all those who say that a 2.5 dont rev have probably never owned/driven one, my sons revs like a ba***ard and makes 600 on v power alone and is a daliy driver,
how many 2.0 do you know that can say that,

2.5 all the way

stevie1982

iTrader: (16)

dont get me worng i have a built 2.0ltr in mine at the minute and its making very nice power indeed around the 500 mark and 430/440 lb but i can only imagine what torque it would make on a 2.5 running a gt35 / p20 at 1.9bar

although i would love a 2.2 / 2.35 it would be the best option as they are meant to make as much power as a 2.5 but be a little more revvy similar to a 2.0 but they are bloody expensive but so i have heard bullet proof where a 2.5 can be weaker above the 450/450 mark so i understand and need linering. Value for money would see me running a 2.5 as you can rev them

ChibiSF

Cheapest way to make power? Go for the 2.5L.

Badbird

our 2.5 was origionaly mapped at 570 hp and run round the streets and a few blasts at santa pod,
Its recently been remapped and made 604 crankshaft, 544 whp and 525 ftlbs
its a 2.5 with liners and its still open deck,
liners are not a mystery and if you need them its not a big deal,
Heres an old saying for you all
"theres no subsitute for cubic inches"

stevie1982

iTrader: (16)

whats the full spec on that then and any links with pictures etc would be nice to see

stealthy55

what turbo is this on as the torque seems low for a 2.5

ChibiSF

I thought the old saying was, "There's no replacement for displacement." Haha.

Setright

No replacement for displacement....there is no substitue for cubic inches....

LOL!

...not often heard on a forum for turbocharged cars :-)

wrx9181

iTrader: (2)

badbird 600 plus horse with an open deck fek me every time i nailed it my **** would br twitching like a rabbits nose

dynamix

iTrader: (3)

Mine is semi open deck (linered though) at 550 bhp and 600 lb/ft on the 2.5

Revs to 8000 and a bit on occasion.

2 bar + of boost from 3000 to redline is quite nice.

dynamix

iTrader: (3)

Back to the OP's question though, the 2.5 sti will make 330 with just cat back exhaust, filter and remap. 350-360 with turbo back exhaust, filter and remap.

Beyond that it starts getting more detailed/expensive.

Badbird

not when you come from drag racing american iron or chrome moly and ally as it is these days,


the turbo is a gt35r yes the torque is a bit low but it was sacrificed for top end, but this was on straight v power no additives or alcohol,

the open deck block is fine with the thick wall top hat liners in the block,

this engine has a couple of thousand street miles on it and been up the track,

not 1 problem at all ever,

Paul built it ,tuned it and did the dyno work,


but back to the topic a factory 2.5 car will give you a head start unless you are going wild with it IMHO

andy1234

Thanks for the input gents....
Based upon there being no overwhelming reason to go for one over the other, I will probably be going for a 2.5 with Ecutek, filter and exhaust that I have seen advertised.