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Discussion Starter #1
Ok the obvious match-up.

In the blue corner the very cool (and thank you SOA) 2.5L boxer engine. "No replacement for displacement!!!!!" 8) The potential for more power is obviously greater than the 2.0L with the extra 500cc's.

In the red corner is the tried and true 2.0L I4 4G63 from Mitsu. Nope..no extra displacement, but a cast iron block where the Subaru has an aluminum head and block.

So, what does everyone think potential wise? True we are getting an extra .5L bump and an already 300hp/300trq, but will the iron block of the Evo better the STi b/c the 4G63 has some tough internals to nearly 400hp???

What's the consensus??
 

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Well, we obviously know little about this new engine and whether many/most/some/none of the parts are from past STis or current STis in other markets. Obviously the pistons are again new......

I suppose the only comparison we can make at this time is the STi 7 engine vs the 4G, and then throw in a factor for the extra displacement of the new engine.

I'd think most of the characteristics of this new engine will be similar to past STis....or at least the 2.0 JDM STi.
 

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Discussion Starter #8
:-? OK..Theoretically then. You have engine A that has a tad bit more displacement but is solid aluminum construction. Then you have engine B that has similar engine internals as engine A but it has a cast iron block and a decrease of 500ccs. Which should be better at accepting more hp with higher boost...SAFELY?

C'mon there has to be some tuners that know about turboed cars..
 

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Well,... I've been doing a lot of research on evolutionm.net and so far I've ascertained that the Evo engine would "beat the crap out of the STi" engine because "Subaru sucks and Mitsubishi rules" and "[that little smiley face holding his fist up in a rock on sign and banging his head]".
As you can see my credentials are bullet-proof and my findings should stop this thread dead in its tracks.
Now, I don't want any flaming because there is no way you can argue against me.
 

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The Evo motor is very strong. In the UK there are loads of 300hp + Evo's. The US Sti motor looks like it will be good too. The Evo can be made a real torque monster upwards of 400lb is not unheard of. There is a Warrender 380hp bored Evo V11 upgrade that takes the 4g63 motor to a 2.2. 1/4 mile 11secs. 0 -60 3.8 seconds
 

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Discussion Starter #17
Limey, thanks!!! :D

Yeah that's what I figured. Even with added boost increased horsepower isn't always the case, right? My thoughts are possibly that the Evo gearbox will need replacing after tons of mods b/c more torque means more breaking?
 

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ok first of all i have been doing some research and i think the evo8 runs 17psi at 4000rpm and 19psi at 6000rpm, second of all my friend just got a brand new black evo8 and i gotta say it has pretty good power even tho it hasnt been broken in yet, he has 400 miles right now and he is done breaking in at 800 miles. also the handeling of the evo8 just grips to the road and in 5th gear 2500 rpms he punched it on a strait road and in a few secod it hit 100mph and all u can hear is the loud turbine spooling and you can feel yourself sinking in.

i also have to add 3/10/03, my friend dynoed his evo8 even tho it hasnt been broken in yet and it was reallly loud and it produced 284hp stock

to get with the problem here i believe that the STi is faster because with our bigger engine we will be able to boost our turbo and produce more hp.

in our crew we have 2003 black evo8, (coming 8th in line) 2004 WRX STi, 2002 black WRX, 1994 black Supra TT, black audi S4, 2000 2.5RS Turbo

the kids with the cars below(me) just turned 16. if the evo8 is ever crashed, then he will get a brand new bmw m3
(the 2003 black evo8, (coming 8th in line) 2004 WRX STi, 2002 black WRX)


TO CONCLUDE THIS, THE STI WILL BEAT THE EVO BECAUSE WITH A BOOST CONTROLLER, AND THE LARGER ENGINE OF THE STI AND LOWER PSI, YOU CAN LITERALLY BOOST THE TURBO HIGHER AND PRODUCE MUCH MORE HP THAN THE EVO8

but while driving around in the evo8, popping the clutch at 3000rpm allowed the turbo to kick on at 2800rpms
 
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