What is the max Hp the stock WRX internals have been known to hold?

Homemade WRX · 03-08-2004, 05:44 PM

What is the max Hp the stock WRX internals have been known to hold?
Thanks, Micah

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Kegger · 03-08-2004, 05:57 PM

227

Seriously though, are we talking at the crank or wheels?

pfhlipwrx · 03-08-2004, 05:59 PM

Big Turkey here in TX, got 399.5 AWHP, with a Forced performance Green. So far he has only blown the factory 5 speed......

Homemade WRX · 03-08-2004, 06:00 PM

either works...I guess whp would be easiest to tell
so just state whp or bhp when telling.
Thanks, Micah

mr2guru · 03-08-2004, 06:00 PM

I have heard of 400+whp and 120 traps....

Triple X's car on a stock longblock.

T-WREXX · 03-08-2004, 06:01 PM

Quote:

Originally posted by Kegger
227
Seriously though, are we talking at the crank or wheels?

LOL

Actually I have a TBE and a intake so I know they can handle at LEAST 235hp.

Seriously though, it depends on how the EJ20 is set up, and who has done the tuning. I have heard the bottom end can handle 400hp, now the top end, that's a different story.

Homemade WRX · 03-08-2004, 06:16 PM

thanks fellas

Kegger · 03-08-2004, 06:17 PM

Quote:

Originally posted by Homemade WRX
either works...I guess whp would be easiest to tell
so just state whp or bhp when telling.
Thanks, Micah

Like mr2guru said, 400whp is definitely doable. But I would never run that much power as a daily driver. You can get that power from one of the larger turbos with 23+ psi and race gas. But as a daily driver, I would turn the boost down and run 93 octane and safely be around 330-350 whp (depending on the type of dyno used)

HTH
Craig

rexaroo · 03-08-2004, 07:45 PM

If you are interested in your engine lasting 100K mi., don't exceed 270-280 hp. That's at the crank, guys, not the wheels.
A simple Cobb Stage I and cat-back exhaust will put you right there with a little margin for safety.
The U.S. EJ205 WRX engine has cast pistons instead of forged and softer valve materials than the STi, which is why it's not good to take it up to 300+ like a lot of guys do.

Course if you are only interested in the engine lasting 10-20K miles before a major re-build, sure, pump the horses up as high as your wallet will allow.

You CAN get huge horsepower safely in the WRX, but you have to strengthen the internals with stronger pistons and valves.

Don't take my word for it--Mike Shields is the WRX expert and he says 260-280 crank horses is the upper safe limit on the stock engine. And believe me, he's re-built a LOT of them from customers that exceeded that. His site is at www.spdusa.com if you want to check it out.

mexicanpizza · 03-08-2004, 08:22 PM

Is that the same Mike Shields that claims the WRX downpipe cat isn't restrictive?

forcefed · 03-08-2004, 08:40 PM

Quote:

Originally posted by pfhlipwrx
Big Turkey here in TX, got 399.5 AWHP, with a Forced performance Green. So far he has only blown the factory 5 speed......

won't be too long before those connecting rods snap at that whp

rexaroo · 03-08-2004, 09:06 PM

Quote:

Is that the same Mike Shields that claims the WRX downpipe cat isn't restrictive?

He didn't say it wasn't a restriction.
What he said was "the downpipe cat is known to run a clear 300-320hp before it is considered a power constriction. It is just not a significant restriction at the power levels we can achieve on pump gas. Yes, if we eliminate the main cat there is a mild improvement in spool-up of the turbo, but not huge gains that justify turning your car into a pollution machine."

In other words, since the stock Rex engine can only be safely bumped to 260-280 hp on pump gas, there's no point in taking it out.

MB38 · 03-08-2004, 09:22 PM

400whp... on what dyno?

verc · 03-08-2004, 10:00 PM

don't forget that the opinions of SPDUSA may be reverse-biased.

Hey man, if you can't pay don't play.

That's all I have to say about modifying your car.

That being said, about the longetivity of the engine with high mods, the WRX is still pretty damn new. Let's see, InternationalB on i-club blew his stage 4 330-360 hp motor at like 90K miles or something for no reason.

I can't think of that many other examples but I think Mike Shields may be in the right range (perhaps a tad bit low but i mean only god knows for sure) for the amount of power this engine can reasonably hold for 100K miles.

Homemade WRX · 03-08-2004, 11:14 PM

yeah I plan on just doing simple bolt on that don't strain the engine...planning on about 210-240 whp for daily driver...when I get the money

don't need ALL that power like the GD WRX...I'm lighter

crazyhorse · 03-09-2004, 01:24 AM

Quote:

Originally posted by rexaroo
If you are interested in your engine lasting 100K mi., don't exceed 270-280 hp. That's at the crank, guys, not the wheels.
A simple Cobb Stage I and cat-back exhaust will put you right there with a little margin for safety.
The U.S. EJ205 WRX engine has cast pistons instead of forged and softer valve materials than the STi, which is why it's not good to take it up to 300+ like a lot of guys do.

Course if you are only interested in the engine lasting 10-20K miles before a major re-build, sure, pump the horses up as high as your wallet will allow.
You CAN get huge horsepower safely in the WRX, but you have to strengthen the internals with stronger pistons and valves.

Don't take my word for it--Mike Shields is the WRX expert and he says 260-280 crank horses is the upper safe limit on the stock engine. And believe me, he's re-built a LOT of them from customers that exceeded that. His site is at www.spdusa.com if you want to check it out.

I ran my car with 230 ftlbs of torque to the wheels for 20k miles plus before losing the radiator to a rock killed the engine. I'll be running it at 270whp here soon as a daily driver and I'd be happy to bet you I get another 20-30k miles with no issues. It's all in how well you maintain the motor and whether you got a good motor from the factory. Use good oil, spend the money to get proper fuel additives, oil additives, etc... and you'll be able to run a 250whp-290whp wrx for a LONG LONG time. Don't expect to run over 290-300whp on 93 octane though.

HighWayDrifter · 03-09-2004, 04:30 AM

snapped a cam in my 02 motor after an overboostfest (over boosted 3 or 4 times) and it finaly went, head gasket, cam and god only knows what else. Word to the wise, DO NOT OVER BOOST. haha

tends to blow **** up.

oh and i have one tranny under my belt so far.

slowgenius · 03-09-2004, 09:42 AM

250 whp is me all the way, i wish to tune my car to that point. i have a perrin short ram and a tuboxs axle back to start. an up pipe and down pipe are next, along with a utec. what other mods are most necessary? tmic? bigger turbo? injectors? fuel pump?

robvas · 03-09-2004, 11:11 AM

Might be a better idea to post a thread

"Who's making over 275 wheel hp, and how long have you been doing it? How many dyno pulls/quarter-mile runs?"

Element Tuning · 03-09-2004, 02:04 PM

I made 411 whp at 27 psi before I chickened out on a stock 2.0. I have trapped as high at 118 on a stock engine and that engine is still running by the way.

I also snapped at rod at 405 ft/lbs so I would say 400 whp is pushing the limits of those rods.

It's all in the tuning boys and girls!

Phil (motoxphil)
www.elementtuning.com

MB38 · 03-09-2004, 02:40 PM

You can get your car into the very high 12s/very low 13s and be "safe" for quite a long time. This'll put you at the USDM STi level, power wise. Depending on dyno, that's anywhere from about 220awhp to 260-270awhp. That's good enough for a lot of people.

Homemade WRX · 03-09-2004, 03:13 PM

ok so if I went with that method I should expect low 12's then?
sounds great!!!
500 lbs makes a lot of difference

SlideWRX · 03-09-2004, 03:24 PM

http://forums.nasioc.com/forums/show...hreadid=416756

thread of blown engines.

Tom

Prestige Motorsports · 03-09-2004, 03:54 PM

It is all in the tuning and in how it is treated. Yes you can make 400 whp on a stock USDM EJ205 engine and do it for a long time. You can also blow one up at stock power levels.

As far as taking the word of SPD, I wouldn't listen. This is the same man who claimed several years ago that you would gain no power from adding an intake to a 2.5. He kept claiming this after numerous dynos showed hp increases of 10-15 wheel horsepower. Mike is a good guy, but has always been a naysayer as far as what can and can't be done. If the DSM community had a bunch of guys like that in it they would all still be happy running low 14 second quarter miles.

bryan carbon · 03-09-2004, 04:06 PM

Quote:

Originally posted by Element Tuning
I made 411 whp at 27 psi before I chickened out on a stock 2.0. I have trapped as high at 118 on a stock engine and that engine is still running by the way.

I also snapped at rod at 405 ft/lbs so I would say 400 whp is pushing the limits of those rods.

It's all in the tuning boys and girls!

Phil (motoxphil)
www.elementtuning.com

Back when you were at TurboXS or with your new gig?

03-08-2004, 05:44 PM	#1
Homemade WRX Scooby Guru Member#: 33782 Join Date: Mar 2003 Chapter/Region: MAIC Location: Milton Keynes, UK Vehicle: 96 3MI Racing search FIRST, then PM!!!	What is the max Hp the stock WRX internals have been known to hold? What is the max Hp the stock WRX internals have been known to hold? Thanks, Micah * Registered users of the site do not see these ads.

03-09-2004, 09:42 AM	#18
slowgenius Scooby Specialist Member#: 48350 Join Date: Nov 2003 Chapter/Region: MAIC Location: Pittsburgh Vehicle: WRX 03/04/07 hybrid PSM	tuning to 250 whp 250 whp is me all the way, i wish to tune my car to that point. i have a perrin short ram and a tuboxs axle back to start. an up pipe and down pipe are next, along with a utec. what other mods are most necessary? tmic? bigger turbo? injectors? fuel pump?

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03-08-2004, 05:57 PM	#2
Kegger Scooby Newbie Member#: 12024 Join Date: Nov 2001 Chapter/Region: MWSOC Location: Chicago IL, '02 GT30R WRX Vehicle: '03 Cobra 700 rwhp 720 rwtq	227 Seriously though, are we talking at the crank or wheels?

03-08-2004, 05:59 PM	#3
pfhlipwrx Scooby Specialist Member#: 19319 Join Date: May 2002 Location: Carrollton, TX	Big Turkey here in TX, got 399.5 AWHP, with a Forced performance Green. So far he has only blown the factory 5 speed......

03-08-2004, 06:00 PM	#4
Homemade WRX Scooby Guru Member#: 33782 Join Date: Mar 2003 Chapter/Region: MAIC Location: Milton Keynes, UK Vehicle: 96 3MI Racing search FIRST, then PM!!!	either works...I guess whp would be easiest to tell so just state whp or bhp when telling. Thanks, Micah

03-08-2004, 06:00 PM	#5
mr2guru Scooby Specialist Member#: 10334 Join Date: Sep 2001 Location: St. Louis Vehicle: 91 RX7 LSx swap '09 CC 3.6 4motion	I have heard of 400+whp and 120 traps.... Triple X's car on a stock longblock.

03-08-2004, 06:16 PM	#7
Homemade WRX Scooby Guru Member#: 33782 Join Date: Mar 2003 Chapter/Region: MAIC Location: Milton Keynes, UK Vehicle: 96 3MI Racing search FIRST, then PM!!!	thanks fellas

03-08-2004, 07:45 PM	#9
rexaroo Scooby Newbie Member#: 35732 Join Date: Apr 2003 Location: Denver,Colorado Vehicle: 2002 WRX Wagon Silver	If you are interested in your engine lasting 100K mi., don't exceed 270-280 hp. That's at the crank, guys, not the wheels. A simple Cobb Stage I and cat-back exhaust will put you right there with a little margin for safety. The U.S. EJ205 WRX engine has cast pistons instead of forged and softer valve materials than the STi, which is why it's not good to take it up to 300+ like a lot of guys do. Course if you are only interested in the engine lasting 10-20K miles before a major re-build, sure, pump the horses up as high as your wallet will allow. You CAN get huge horsepower safely in the WRX, but you have to strengthen the internals with stronger pistons and valves. Don't take my word for it--Mike Shields is the WRX expert and he says 260-280 crank horses is the upper safe limit on the stock engine. And believe me, he's re-built a LOT of them from customers that exceeded that. His site is at www.spdusa.com if you want to check it out.

03-08-2004, 08:22 PM	#10
mexicanpizza Scooby Specialist Member#: 16779 Join Date: Mar 2002 Chapter/Region: NESIC Location: Yarmouth, Maine Vehicle: 2021 Toyota 4Runner Black	Is that the same Mike Shields that claims the WRX downpipe cat isn't restrictive?

03-08-2004, 09:22 PM	#13
MB38 Scooby Specialist Member#: 51588 Join Date: Dec 2003 Chapter/Region: SCIC Location: Burbank, CA Vehicle: 2006 WRX TR 1997 Supra Turbo	400whp... on what dyno?

03-08-2004, 10:00 PM	#14
verc Scooby Specialist Member#: 41754 Join Date: Aug 2003 Location: san ramon Vehicle: 03 wrx gt35r, 2.5L, meth	don't forget that the opinions of SPDUSA may be reverse-biased. Hey man, if you can't pay don't play. That's all I have to say about modifying your car. That being said, about the longetivity of the engine with high mods, the WRX is still pretty damn new. Let's see, InternationalB on i-club blew his stage 4 330-360 hp motor at like 90K miles or something for no reason. I can't think of that many other examples but I think Mike Shields may be in the right range (perhaps a tad bit low but i mean only god knows for sure) for the amount of power this engine can reasonably hold for 100K miles.

03-08-2004, 11:14 PM	#15
Homemade WRX Scooby Guru Member#: 33782 Join Date: Mar 2003 Chapter/Region: MAIC Location: Milton Keynes, UK Vehicle: 96 3MI Racing search FIRST, then PM!!!	yeah I plan on just doing simple bolt on that don't strain the engine...planning on about 210-240 whp for daily driver...when I get the money don't need ALL that power like the GD WRX...I'm lighter

03-09-2004, 04:30 AM	#17
HighWayDrifter Scooby Specialist Member#: 8908 Join Date: Aug 2001 Chapter/Region: SCIC Location: state of oblivion Vehicle: 2012 Ford Raptor	snapped a cam in my 02 motor after an overboostfest (over boosted 3 or 4 times) and it finaly went, head gasket, cam and god only knows what else. Word to the wise, DO NOT OVER BOOST. haha tends to blow **** up. oh and i have one tranny under my belt so far.

03-09-2004, 11:11 AM	#19
robvas Scooby Newbie Member#: 17466 Join Date: Apr 2002 Location: Saginaw, MI	Might be a better idea to post a thread "Who's making over 275 wheel hp, and how long have you been doing it? How many dyno pulls/quarter-mile runs?"

03-09-2004, 02:04 PM	#20
Element Tuning Former Vendor Member#: 54918 Join Date: Feb 2004 Chapter/Region: MAIC Location: Gaithersburg, MD Vehicle: 673 WHP Element Tuning Pro Comp Engine	I made 411 whp at 27 psi before I chickened out on a stock 2.0. I have trapped as high at 118 on a stock engine and that engine is still running by the way. I also snapped at rod at 405 ft/lbs so I would say 400 whp is pushing the limits of those rods. It's all in the tuning boys and girls! Phil (motoxphil) www.elementtuning.com

03-09-2004, 02:40 PM	#21
MB38 Scooby Specialist Member#: 51588 Join Date: Dec 2003 Chapter/Region: SCIC Location: Burbank, CA Vehicle: 2006 WRX TR 1997 Supra Turbo	You can get your car into the very high 12s/very low 13s and be "safe" for quite a long time. This'll put you at the USDM STi level, power wise. Depending on dyno, that's anywhere from about 220awhp to 260-270awhp. That's good enough for a lot of people.

03-09-2004, 03:13 PM	#22
Homemade WRX Scooby Guru Member#: 33782 Join Date: Mar 2003 Chapter/Region: MAIC Location: Milton Keynes, UK Vehicle: 96 3MI Racing search FIRST, then PM!!!	ok so if I went with that method I should expect low 12's then? sounds great!!! 500 lbs makes a lot of difference

03-09-2004, 03:24 PM	#23
SlideWRX Scooby Specialist Member#: 3803 Join Date: Jan 2001 Chapter/Region: MWSOC Location: SouthEast Michigan Vehicle: 07 Mustang GT Ford Crappy Paint White	http://forums.nasioc.com/forums/show...hreadid=416756 thread of blown engines. Tom

03-09-2004, 03:54 PM	#24
Prestige Motorsports Former Vendor Member#: 13158 Join Date: Dec 2001 Chapter/Region: South East Location: Asheville North Carolina Vehicle: 2002 Impreza WRX Sedona Red	It is all in the tuning and in how it is treated. Yes you can make 400 whp on a stock USDM EJ205 engine and do it for a long time. You can also blow one up at stock power levels. As far as taking the word of SPD, I wouldn't listen. This is the same man who claimed several years ago that you would gain no power from adding an intake to a 2.5. He kept claiming this after numerous dynos showed hp increases of 10-15 wheel horsepower. Mike is a good guy, but has always been a naysayer as far as what can and can't be done. If the DSM community had a bunch of guys like that in it they would all still be happy running low 14 second quarter miles.