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Old 10-14-2009, 03:00 AM   #1
ncarn8
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Default realistic hp target ej205

Hi all i have an ej205, MY00. It is currently stock as a rock, but will begin modding it. What i want to know is, generally speaking, at what hp level do things let go in the ej205? Can you get more from them than ej20G? What lets go first? Im just after a generally accepted hp ceiling based on all the blown up ones on here lol.
And also, how much more can you get from the ej207, with the MY00 heads?

Mods are being installed in this order and professionally tuned.
Fuel pump w/surge, exhaust, intake, turbo (vf 22 or 34 most likely) EM, front mount. If its holding up minor porting and sti v6 cams and another tune.
Thanks in advance
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Old 10-14-2009, 11:05 AM   #2
ownnij
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they say ej205 can handle up to 375whp and a few of us are just about right there. i've seen rods give out at the lower 300s so the question is quite debatable. most of us that are maxing out our ej205s are going in knowing our motors will blow up so it's no big deal. vf22 or vf34 will net you around 280whp so you should be fine, just as long as the tune is right on the spot.
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Old 10-14-2009, 01:45 PM   #3
shadowmd
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you'll the like the power the bolt-ons a vf series turbo gives you. i have a vf34 on my 05 wrx and its nice. i'm always looking for more lol, but it's quick enough and still reliable (good enough for my daily)
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Old 10-15-2009, 03:59 AM   #4
GundamFan
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If it helps you any my 02 WRX has been at 260whp since it had 60k on it, it now has 136k!
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Old 10-15-2009, 08:21 AM   #5
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Quote:
Originally Posted by ownnij View Post
they say ej205 can handle up to 375whp and a few of us are just about right there.
And who is "they"? Because "they" are a bit stupid. I wouldn't even run a stock EJ257 that high. I'd be hesitant to go much over 315 whp on a 205. It won't instantaneously explode at that power, but you will eventually see its effects.
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Old 10-15-2009, 08:28 AM   #6
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Quote:
Originally Posted by Byzantium View Post
And who is "they"? Because "they" are a bit stupid. I wouldn't even run a stock EJ257 that high. I'd be hesitant to go much over 315 whp on a 205. It won't instantaneously explode at that power, but you will eventually see its effects.
Clark Turner.....pretty stupid guy huh.

Quote:
Originally Posted by Clark Turner View Post
I have tuned 205s with Greens, reds, 30rs and 35rs many times. The trouble is the connecting rods. They tend to leave the block above 350ft lbs at the wheels. I have made 400 with some and they held. As for power, The motor starts to show its limitations around 375whp. Still. I have made 400whp with them many times. I just detune the trq by reducing boost and or reducing the timing. If you tune carefully, they will live. If its a high mileage motor, I would be a bit worried.

Clark


http://forums.nasioc.com/forums/show...3#post23948283
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Old 10-15-2009, 08:35 AM   #7
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The same Clark Turner that ruined my motor?

People have made +500 whp on stock EJ257s, that doesn't mean they "start to show limitations" at 500 whp.
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Old 10-15-2009, 08:40 AM   #8
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zomg he ruined your motor now he's a complete dumbass right.
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Old 10-15-2009, 08:42 AM   #9
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Quote:
Originally Posted by GDB FAN View Post
zomg he ruined your motor now he's a complete dumbass right.
Mine and plenty of others. I've seen several bad tunes by him, not all that ended in disaster.

But this thread isn't about Clark.
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Old 10-15-2009, 10:20 AM   #10
69subaru360
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At 350 whp things start to let go, usually the rods. If you're good at tuning and avoid knock you can keep the pistons in one piece over 300 whp, but the rods have their limits.
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Old 10-16-2009, 08:31 AM   #11
ncarn8
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ok from this iwill align parts choice to suit a goal of 260whp max. That seems to be far enough away from the crunch time, but will be ebjoyable enough, and hopefully have some longevity. Than ks all!
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Old 10-16-2009, 01:21 PM   #12
jason miller
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I think what Clark meant is that 375 whp is about as much power as you can make without race gas or a huge turbo. That's really about the limit of the stock ej205 heads/cams.

The reason most ej205's go would be spun bearings, which can't really be blamed on power output; but rather oiling issues. As far as power related failures go, the rods are the weak point.
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Old 10-16-2009, 02:52 PM   #13
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It all depends on the motor. Mine blew at 265whp, granted, that was a lower reading dyno, but still. I blew a rod out the top while on the freeway, 14xk on the engine.
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Old 10-16-2009, 04:05 PM   #14
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I know its not eaxactly what you were asking...

127,000 miles with a Prodrive Stage 3 + other goodies dyno'd 259 WHP no worries.

Talk to a good builder/tuner.

Call Andrewtech...Talk to Turbo XS... I imagine between the two of them they could build you something silly.
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Old 10-17-2009, 02:02 AM   #15
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You people are neglecting something important. I'm pretty sure the OP is more concerned with making reliable power with his engine more-so than how much power the car can make before it a catastrophic failure becomes imminent. Hence, the much lower answer.
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Old 10-17-2009, 05:36 PM   #16
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I'm stuck in the same situation, days from installing an 18g. After weeks of looking in these subaru forums I only here bad things happening with this setup and naturally am paranoid about blowing up my dd. What's a good piston/rod kit to get that's somewhat cheap and keeping factory displacement? Sorry for being off-topic, it was the closest topic thread I could find.
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Old 10-18-2009, 09:02 PM   #17
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First I'd like to say that this is a difficult question to answer because there are so many variables. Quality of the tune, how the car is driven, what dyno you're talking about, how well the car is maintained, etc.

That said, from what I've read, it seems that once you're approaching 300whp on an average-reading dyno is when it stops becoming a question of "if" the engine will go, but rather "when" the engine will go.
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Old 10-19-2009, 02:51 PM   #18
JSarv
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Again? Search...

There are quite a few of us moving in excess of 350 g/s on our stock 205's (over 350whp)

Fuel/tune/oil/plugs

/thread

There is no answer.
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