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Old 11-08-2013, 10:06 AM   #1
Razgeiz
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So heres my 500+ whp build thread I have learned a great deal since i originally made this post!

As for the build heres what i got and I am assembling myself save the short block this time as time is short for me.

Motor:
Built by IAG
Closed deck by IAG/O-rings
New OEM EJ207 crank
TiC 2.34L destroke setup (JE OTS pistons 99.75mm and Manley H-tuff +2mm rods)
ARP CA625+ headstuds
P&L race application 11mm oil pump
Killer B pickup and oil pan and baffle
Stock timing belt
W25 heads
Kelford 220-C Dual AVCS cams
Supertech +1mm intake and exhaust valves
Heads refreshed and assembled by Outfront Motorsports

Fueling: E-85 Cobb flex fuel
ID 1300 cc injectors
Walbro 485 with P&L direct wire kit
Flat 4 fuel rail and FPR kit: Thank you Phil!
Evap delete
air pump delete

Intake Exhaust Turbo:
EFR 7670 .92 IWG twin scroll
Full race EFR rotated kit with a super sexy custom intake box fed from the foglight
ETS FMIC with custom rotated manifold piping
All exhaust will be ceramic coated
STi PNP'd intake manifold flipped
Hybrid boost control setup Grimmspeed EBCS and MBC

Misc.
Mishimoto X-line radiator
Custom scoop mounted oil cooler
Dss cf driveshaft

Stealthy black engine bay and minimum exterior mods to troll morons.
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Last edited by Razgeiz; 01-27-2016 at 11:36 AM.
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Old 11-08-2013, 10:29 AM   #2
04ImprezaWRX
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Looks pretty solid +1 valves are not needed. Keep it simple. E85 is also a tough call, on my personal vehicle being daily driven id run meth injection. E85 isn't consistent at the pump too many variables to safely run it. But that's my opinion. Good luck.
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Old 11-08-2013, 10:49 AM   #3
Razgeiz
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Originally Posted by 04ImprezaWRX View Post
Looks pretty solid +1 valves are not needed. Keep it simple. E85 is also a tough call, on my personal vehicle being daily driven id run meth injection. E85 isn't consistent at the pump too many variables to safely run it. But that's my opinion. Good luck.
im honestly not a fan of meth injection i would rather leave power on the table and not have to worry about it not working right and blowing up the motor. However your the first to really say anything about e-85 being not "safe" could you explain? I know they have winter mixes in which i would just go to 93 for winter anyways
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Old 11-08-2013, 10:58 AM   #4
04ImprezaWRX
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Yes winter mixes and all that. Even during other months it varies a lot. You always have to test it. At 500whp poor fuel can end a motor quickly. You also have to worry about your injectors being the alcohol can cause problems with them sticking. I'm just putting a second opinion in the build. Run what your tuner and builder says and you'll be good.
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Old 11-08-2013, 11:01 AM   #5
atomicfire
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Quote:
Originally Posted by Razgeiz View Post
im honestly not a fan of meth injection i would rather leave power on the table and not have to worry about it not working right and blowing up the motor. However your the first to really say anything about e-85 being not "safe" could you explain? I know they have winter mixes in which i would just go to 93 for winter anyways
E85 only means the fuel can be up to 85% ethanol - I believe the specification says the fuel can be anywhere from 70% to 85% ethanol and they can label and sell it as E85.

This means your tune will be always off because each tank of fuel has a slightly different mixture of ethanol.

You could get tuned on actual E85 (test it and find the highest ethanol content or buy quality E85 from a supplier) and then pretty much every time you fill up that's less than 85% ethanol you wold run rich (safer than running lean) and then just hope that your fuel trims will adjust and compensate for it.

Some aftermarket ECUs like ProEFI has ethanol content analyzers and can compensate for ethanol content in real-time.

Something to think about.
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Old 11-08-2013, 11:20 AM   #6
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E85 only means the fuel can be up to 85% ethanol - I believe the specification says the fuel can be anywhere from 70% to 85% ethanol and they can label and sell it as E85.

This means your tune will be always off because each tank of fuel has a slightly different mixture of ethanol.

You could get tuned on actual E85 (test it and find the highest ethanol content or buy quality E85 from a supplier) and then pretty much every time you fill up that's less than 85% ethanol you wold run rich (safer than running lean) and then just hope that your fuel trims will adjust and compensate for it.

Some aftermarket ECUs like ProEFI has ethanol content analyzers and can compensate for ethanol content in real-time.

Something to think about.
Well the whole purpose of this thread was to learn what people with experience in this field had to say about what i was doing here. My tuner and builder seem to think with my setup i could push 600 whp but thats running an aggressive tune which at 500ish whp im running it pretty well on the conservative side of things which is what i want anyways. I dont want to blow my motor up i want to get this build to last for awhile so im not leaving anything to chance
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Old 11-09-2013, 12:53 PM   #7
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Any others with experience driving a 500+ whp as their daily driver?
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Old 11-09-2013, 01:50 PM   #8
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Get fuel from the same station. If you're worried, test it out how much it varies. The tune can be set to give you some buffer. I run E85 from the local stations. If you're afraid, keep it stock.
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Old 11-09-2013, 03:22 PM   #9
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Originally Posted by FuJi K View Post
Get fuel from the same station. If you're worried, test it out how much it varies. The tune can be set to give you some buffer. I run E85 from the local stations. If you're afraid, keep it stock.
I'm not worried about the e-85 I did more research and found the answers I was looking for. Still looking for someone with a similar whp rating that has used it to drive around town not just a track car tho
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Old 11-09-2013, 03:31 PM   #10
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Quote:
Originally Posted by Razgeiz View Post
Any others with experience driving a 500+ whp as their daily driver?

I don't think the terms "Reliable daily driver" and 500WHP+ work well with a Subaru.


Buy a 13+ GT500 (590WHP stock) Problem solved...


It doesn't take much to get them into the 9.XX second 1/4 mile category and you can PLEASANTLY drive to go get groceries. I doubt a 600WHP Subaru would be pleasant to drive around town.
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Old 11-09-2013, 06:27 PM   #11
FuJi K
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Our 6766 STi drives just fine around town. It's drives like your normal turboback exhaust STi just putting around town. Of course when you want the power anything past 5000RPMs WOT and you dip over 600whp+. The long gears really tame the car driving around town.
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Old 11-09-2013, 06:33 PM   #12
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Well the only concern I would have is the bearings failing a fair amount sooner at that power level but that's a given.

You said oil mod for high rpm, what cam do you plan to use? I personally think that will be the limiting factor on how this build would turn out seeing the power level we are talking. Also are you dead set on that turbo? The GTX3076 .82 could crack 500whp on E85 easily IMO. Honestly I just like how the GTX series likes the top end when compared to the standard GT turbo.

Running a BC stage 2 cam and the GTX3076 .82 turbo on my DD, it drives as good as stock until you go past 50-60% throttle, then it turns into a monster :-)

I will be honest and say I have yet to drive an STi with a GT or GTX35R or larger that I thought drove well as a DD. At that point it tends to act like an on/off switch a little too much for my taste. With the GTX3076 I can still modulate boost with throttle position really accurately.
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Old 11-09-2013, 07:24 PM   #13
john 1badSTI
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A lot of how it drives is ALL in the tune and WHO the tuner is.I have multiple 500whp cars that drive around daily just like a stocker,now I did spend more time on them then I should but thats just me.Also most of the ones I have tuned have Hydra's in them.Your setup should easily surpass 500whp at 24-26 psi on e85 but I wouldn't worry about spinning it past 7500 since you are not putting in cams.
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Old 11-09-2013, 09:19 PM   #14
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When my ethanol fueled 2011 Sti was making 613whp, I drove it all the time on the street with no drivability issues!

I drove it all the time to class in the winter, work, etc. and loved every minute of it

The key was that I got tuned on E70 aka "winter blend" in December and then just got retuned in the spring when we got E90 aka "summer blend"! The life of my engine was significantly reduced from constant trips to the drag strip and beating the hell out of it on the street, oh well...

I believe that making 500whp on ethanol is way easier than people think honestly as long as you are smart... Since he owns a 13 Sti, that means it has the SI drive option so he can drive around on lower boost, then go to a higher amount by switching between "intelligent", "sport" and "sport sharp" at the touch of a button!

I made 521whp using ethanol and PTE 6266 @ roughly 24-25 psi, which is going pretty easy on a properly built engine with a healthy tune :-)

Go For It!!!
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Old 11-09-2013, 09:32 PM   #15
john 1badSTI
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^^^^+1 just like I said and now he confirmed it in his own car also.
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Old 11-10-2013, 01:33 PM   #16
Razgeiz
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Thanks for the info guys!! Well im not dead set on a turbo i have been looking at at Borg warner efr turbos they look really good in terms of spool and power. Now I spoke with my tuner and they said if I didn't plan on pushing much past 500 then cams wouldn't be 100% needed. Now I know they would help out on the top end but the added cost for me im not exactly sure I can justify the cost. And yes I got the I drive so the adjustable boost would help and I want the turbo to punch HARD so that's fine with me. What clutches are you running? I've heard mixed results with everything out there so personal experience?
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Old 11-10-2013, 01:34 PM   #17
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Oh and baseball how long did your engine last? Or if its still running how many miles you have on it?
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Old 11-10-2013, 03:02 PM   #18
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Oh and baseball how long did your engine last? Or if its still running how many miles you have on it?
It lasted 10k miles with me beating the **** out of it every time I drove it

My goal had always been to make 600whp on stock sleeves, which I achieved but knew that wasn't gonna last long at that level...
500whp will be a great deal simpler and reliable!

Just put together a fresh sleeved motor to use with an FP 3784 to go for 750+whp and drive it on the street all next summer! ;-)
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Old 11-10-2013, 03:12 PM   #19
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It lasted 10k miles with me beating the **** out of it every time I drove it

My goal had always been to make 600whp on stock sleeves, which I achieved but knew that wasn't gonna last long at that level...
500whp will be a great deal simpler and reliable!

Just put together a fresh sleeved motor to use with an FP 3784 to go for 750+whp and drive it on the street all next summer! ;-)
Oh I'm gonna beat on it!! And that build sounds amazing man absolutely crazy! How long you expect that bad boy to last lol
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Old 11-10-2013, 03:16 PM   #20
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What clutches are you running? I've heard mixed results with everything out there so personal experience?
I had been using an ACT 6-puck xtreme duty which worked fine when I was making 521 or lower... After making over 600 it decided to let go at the track which is a big reason I have not hit my 9 sec goal yet

I now use a Quarter Master twin disc "race" clutch w/ hydraulic release bearing and it is amazing! :-)
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Old 11-10-2013, 03:38 PM   #21
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Oh I'm gonna beat on it!! And that build sounds amazing man absolutely crazy! How long you expect that bad boy to last lol
This engine should last pretty long with the quality parts that we have stuffed inside it

I will drive a lot easier on the street this time around utilizing the SI Drive with 24, 30 & 36 psi setting most likely

I will be taking to the track until I take the GR chassis record so we will see how well everything holds up
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Old 11-11-2013, 02:26 PM   #22
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Originally Posted by baseballdbk1 View Post

This engine should last pretty long with the quality parts that we have stuffed inside it

I will drive a lot easier on the street this time around utilizing the SI Drive with 24, 30 & 36 psi setting most likely

I will be taking to the track until I take the GR chassis record so we will see how well everything holds up
That sounds bad ass man. I hope you take that record! I hope mine lasts at least 80k without a refresh but that's wishful thinking I know haha
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Old 11-11-2013, 06:17 PM   #23
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Quote:
Originally Posted by Razgeiz View Post
Thanks for the info guys!! Well im not dead set on a turbo i have been looking at at Borg warner efr turbos they look really good in terms of spool and power. Now I spoke with my tuner and they said if I didn't plan on pushing much past 500 then cams wouldn't be 100% needed. Now I know they would help out on the top end but the added cost for me im not exactly sure I can justify the cost. And yes I got the I drive so the adjustable boost would help and I want the turbo to punch HARD so that's fine with me. What clutches are you running? I've heard mixed results with everything out there so personal experience?
Correct you don't NEED cams to reach 500whp, but to make a 500whp set-up drivable they will help dramatically (mismatched cams hurt more then properly matched aggressive cams). The cams I chose for my build roll the power on slower but reach a higher overall number at the old peak and then keep pulling another 1500-2k rpm until they hit max power. It just is a massive factor in the way the car functions when all is said and done.
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Old 11-11-2013, 10:26 PM   #24
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Its hard to have a reliable 500+ awhp subi. I did for a couple of months at 554 hp. Ending up needing another rebuild at just 15k miles. Im on my second built block, but this time its not a DD.
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Old 11-12-2013, 12:17 AM   #25
alcoolaid
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Don't want to sound negative and I'm sure some people have had better luck than me but going to have to agree and say reliable, 500whp, and subaru don't go together well. I do a lot of road racing so maybe that's why I have had a lot of problems. I'm sure if I didn't beat on my car a lot I would get a lot of extra life but I wouldn't be hoping to get 80k problem free.

If I were to rewind back 6 years and wanted big reliable power, probably would have gone the evo 9 route... or as of lately I've been thinking z06.
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