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Old 11-12-2011, 06:05 PM   #1
Layvon
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Default 2004 STi Twin Scroll 6262

I recently decided to build up an engine for my 2004 STi. It is going to be a long road ahead, but I'm excited none the less.
This build is going to have quite a few one - off parts... made from me, a new exhaust man on the Subaru block, and a very reputable shop trying to make their abilities known in the Subaru Community. This build will be all done out of my pocket, just getting established into the real world, as I graduated school in May 2011. Have nothing better to do when I'm home than tinker in the garage, and since I got my 2004 WRX in 2009, I've wanted to have a quick car.

I don't expect this build to be done done till September of 2012, but It could be running on the new motor by the beginning of May.

Goals for the car are to have a fun car to drive on the weekends, that I can change the map at the track, and go to the 1/4 mile, go to a road course, and maybe autox... I think my turbo is going to prohibit me from being competitive... but it will still be fun to do.

Anyways - here is the mod list for the engine, along with the rest of the stuff that has been done / will be done before I consider this build to be done done.

Short Block
  • 701 EJ257. If I use the donor block I bought - It will have to be bored to 100mm, I don't really like the idea of this, I'm going to be talking to my builder about his confidence in the stock walls at whatever hp my car ends up making. Unless I end up buying a new block, this block will be "decked" and cleaned before assembly begins.
  • New OEM Shortblock, 704, includes Crank, bearings, and misc gaskets, Nitrated crank
  • CP SC7420 Pistons 8.2:1 CR 99.5mm Bore
  • Manley Turbo Tuff Rods.
  • ARP 2000 Rod Bolts
  • Coated Piston tops, and possibly skirts
  • ARP L19 Head Studs H11 Studs now.
  • KillerB Pick up
  • Koyo Radiator
  • Gates Timing Belt / New pulleys / water pump
  • Mishimoto Radiator shroud and slim fans.
Heads - Plan on tuning to 8k, but setting rev limit to 7750 for safety. It will depend on where it quits making power.
  • 2007 STi Heads - bought from Sean18337 here on NASIOC
  • Cosworth S2 278/274 Cams
  • Cosworth Springs and Retainers
  • Element Tuning Big Valve Heads
    • +1mm intake valves w/ 5 angle valve job
    • +1mm exhaust valves w/ 2 angle valve job
Air
  • PTE 6262 Twin Scroll .84, Vband Down Pipe
  • fobia WRX Headers / Down Pipe.
  • APS FMIC - Likely going to ceramic coat the FMIC piping.
  • Reverse IM
  • Grimmspeed TGV deletes
Fuel - E85
  • FIC2200cc injectors. Overkill - yes.
  • FIC fuel rails.
  • Fuel lab FPR
  • Custom Surge tank setup (pictures below) W255 in tank w/ 2 Bosch 044 feeding fuel rails w/ inline fuel filter.
Suspension & Driveline
  • Stock STi Struts getting valved by feal / Maybe getting Feal coil overs.
  • Epic Engineering Springs
  • Whiteline Front 27mm Swaybar
  • Whiteline Rear 24mm Swaybar
  • Kartboy endlinks for all 4 corners.
  • Torque Solutions Motor Mounts
  • Torque Solutions Pitch stop
  • Torque Solutions Trans Mount
  • TiC Diff Mount Bushings
  • TiC Shift Linkage Bushings
  • TiC Pivot Bushings
  • Kartboy Front / Rear Shifter bushing
  • Kartboy Short Throw
  • Kartboy Shift Knob
  • ACT Sprung 6 Puck
  • ACT Streetlite Flywheel
  • 5*114 Hub Swap completed
  • 2007 STi Transmission
  • 2006 STi R180
  • DSS Aluminum Driveshaft
Electronics
  • Junior Tuned
  • Vipec ECU
  • AEM Wideband
  • AEM Oil Pressure
  • AEM Boost
  • Constant Motion Performance ECBS
  • GM IAT
  • Omni Power 4 bar
  • Relocated battery

Brakes[*]Goodrich SS Lines[*]Grimmspeed Master Cylinder Brace

Cooling[*] Koyo Radiator[*] Samco Hoses[*] 11 Row Oil Cooler. Unsure if I'll use this at first start up.

Please please advise if you see something that isn't going to work / you have suggestions as to what could be done differently. I already know who i'm going to be purchasing all of my goods from, but if you see a part change out that could be better for my build please let me know.
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Last edited by Layvon; 03-19-2013 at 12:53 PM.
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Old 11-12-2011, 06:09 PM   #2
Layvon
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Default

Heads:

Whole Album
http://imageshack.us/g/207/photo1gof.jpg/




Fuel System
whole album http://imageshack.us/g/254/photo1ou.jpg/


Tank close up

Mount using the washers to provide pressure to carpet to hold stable. I will probably rubber coat / plasti dip the head of the bolt to that it doesn’t rattle / scratch stuff




Last edited by Layvon; 03-12-2012 at 08:38 PM.
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Old 11-12-2011, 06:09 PM   #3
Layvon
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Update #2
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Old 11-12-2011, 06:09 PM   #4
Layvon
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Update #3
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Old 11-12-2011, 06:18 PM   #5
SedonaScooby
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aside from the mani what is going to be a first?
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Old 11-12-2011, 07:49 PM   #6
Layvon
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Good point -
It is going to be my first experience tearing down / building a motor, though I'm not doing the assembly.
First exhaust for cody, as you mentioned,
First set of fuel rails by Built Industries ( I think),
Not many EFRs out there,
Haven't seen many in engine bay surge tanks, though I know there are a few. Probably going to make my own coolant overflow / AOS / have cody do it.

It isn't going to be 100% unique, but I feel like the more EFR turbo configurations that there are on NASIOC, the more we can decide as a community what turbo line (Garrett vs BW) is better suited for which application. I was hoping to have a turbo sooner, but the lead time is pretty long, not a big deal, I need to work on paying off Seans heads before I do anything.

Layvon
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Old 11-12-2011, 08:07 PM   #7
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Your prob better off getting a treadstone core instead of searching for an APS one... Just have custom pipes made
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Old 11-12-2011, 08:08 PM   #8
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Why is this in the proven power section?
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Old 11-12-2011, 08:42 PM   #9
john 1badSTI
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You need to research and see how many guys have had problems with the aem and avcs signal.Ask ^^^CI above about the sync issues.Now Now jeff cut him some slack.
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Old 11-12-2011, 08:49 PM   #10
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Quote:
Originally Posted by Crystal_Imprezav View Post
Why is this in the proven power section?

because its his build thread? idk....
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Old 11-12-2011, 08:50 PM   #11
Layvon
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SFW - I picked up a New APS core and pipes for 800. I knew someone with some resources.

Ha, Jeff - I didn't know where to put it, there's no power here yet, my car is nothing to look at yet, Built motor discussion? It was here or there. I've been following your build and Barigas build VERY closely over the last 1-2 months... and your build is what swayed me to go this direction

John - I have done a little bit of research, and saw that some people were having issues with it, but the guy who is going to be tuning me, prefers AEM and is a dealer for them.
I saw that AEM just had a new EMS came out, but I don't know much about it.

Do you have any suggestions on an EMS besides the AEM? I dont think that having a MAF is an option. Period. I think that takes Stock ECU out of the question does it not?
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Old 11-13-2011, 12:54 AM   #12
seanathanq83
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i wouldnt get L19 i would get the arp +625, much better, less chance of corrosion also get crower or turbo tuff i would not get BC, im very happy with my carrillo,

also for the power your looking for the stock ecu will do fine, you shouldnt be running crazy boost or high rpms, heck my stock igniton system and ecu are holding 9k at 29psi and 400whp and at 500whp a maf is still very effective or just talk to Freon or Carbibble about the new and forthcoming SD setups for the 32bit roms

also what happened to fobia????
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Old 11-13-2011, 01:10 AM   #13
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I would get the AEM EMS ver 2... my buddy who tunes AEM highly recommends them
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Old 11-13-2011, 08:45 AM   #14
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Quote:
Originally Posted by Crystal_Imprezav
Why is this in the proven power section?
I was just wondering the same thing. We need a hopes and dreams section
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Old 11-13-2011, 10:25 AM   #15
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Which cosworth cams are the breaking/snapping model?
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Old 11-13-2011, 11:44 AM   #16
Layvon
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I hadn't heard of the 625s sean - I'll have to take a look at them. Why not BC I beams? I know you said that you weren't a fan of them before, but I looked and didn't see anyone with issues either. If there is a reason anyone knows why I shouldn't - let me know.

If I can keep the MAF - I haven't seen many people over 500 WHP with it - and I'm having trouble finding a good sized intake. Initially I was going to go with a KStech and scale the MAF. Then just get a coupler to go to inlet, then tune, but I don't know how well that would work.

As for Fobia - The guy doing the exhaust work will be able to do just as good of work as fobia, plus he's local, and hes been wanting to get into the subaru market. He offers a lifetime guarantee against cracking.

http://a5.sphotos.ak.fbcdn.net/hphot..._7547991_n.jpg

I think he'll be able to handle my car.

Didn't know about any snapping cosworth stuff. Compared to other companies volumes, there sure is a lot of negative feedback about the Cosworth stuff.
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Old 11-13-2011, 11:45 AM   #17
Layvon
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Quote:
Originally Posted by AREA1320 View Post
I was just wondering the same thing. We need a hopes and dreams section
I agree! If this needs to be moved somewhere else - let me know and I'll try to request a moderator move it. I just don't know where I fit in here!
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Old 11-13-2011, 05:48 PM   #18
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Where are the firsts, I think you need a title change........."need advice on my build" would be better.
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Old 11-13-2011, 06:27 PM   #19
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i think he means first for himself
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Old 11-13-2011, 07:25 PM   #20
Layvon
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Quote:
Originally Posted by JCSSTIDOM3 View Post
Where are the firsts, I think you need a title change........."need advice on my build" would be better.

See Post #6 - Title Changed anyways.

Last edited by Layvon; 11-13-2011 at 07:40 PM.
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Old 01-08-2012, 11:06 PM   #21
Layvon
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Pictures added of heads and Fuel System.

Any Ideas of EM to go with would be much appreciated!

Last edited by Layvon; 01-08-2012 at 11:17 PM.
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Old 01-10-2012, 09:44 PM   #22
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7670 vs gtx35
i have no idea
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Old 01-11-2012, 06:34 AM   #23
Layvon
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It's going to be a heated arguement until there is about 20 of each fully built. I'm thinking mine will be around the 5th car on here with a 7670. Unless BW Really starts churning them out and some people with some deeper pockets starts and finishes faster than I can afford to spend.

On Full Races website, they say that the 83xx EFR is comparable to a GT35, so we'll see.
I'm not aiming to set records, just to be set in my seat.
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Old 01-17-2012, 02:46 PM   #24
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Hopefully my monster build will be done by the end of the month so I can give you numbers on the EFR 8374. Should be fun since it's going to be on 91 and E85.
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Old 01-18-2012, 09:55 AM   #25
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tino is going from his gt40r to an 8374 and was told by full race it will make the same power just better transient response and more spool
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