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06-13-2012, 06:11 AM | #1 |
Scooby Newbie
Member#: 176002
Join Date: Mar 2008
Chapter/Region:
International
Location: Melbourne, Australia
Vehicle:2001 WRX |
Hybrid 2.5/Twin scroll GTX3076R Build
Thought I'd add my build thread to this forum also to just get the info out there. Car started its life as an ADM 2001 WRX (bugeye), but not much left of that now Ran the original EJ205 (hard!) to 240,000km before a rod bolt let go and made a good mess (lucky I had already started building). Cut to the chase...
Bits to go in: New EJ255 Short Block Balanced Crank & Rotating Assembly CP 9:1 Pistons Manley H Beam Rods Modified Kando Twin Scroll Headers (TS T3 flange, dual EWG VTA, ceramic coated) Custom 3" VBand Dump with Tomioka Racing 5" Body 100 Cell Metal Cat Subaru 12mm Oil Pump Subaru Timing Belt Kit & Water Pump ID1000 Injectors (May get larger) 2x Turbosmart CompGate40 EWG's (Nominal gate pressure 12psi) ADM 05 STi Heads (Mild port & clean up) 1mm Oversize Exhaust Valves (Cos some fkn retards cut the seats too deep) Kelford 264 AVCS Cams BC Springs ARP 11mm Head Studs STi Solid Steering Knuckle Deatschwerks DW301 in tank Fuel Pump Turn in Concepts Transmission Cross Member Bushings JDM AH581 ECU STi Group N Engine Mounts Perrin 3" silicone intake Exedy Racing 'Stage 1' clutch (15803HD) Exedy FF501 Lightweight flywheel Hyperflow 'Stage 3' Sump Process West 72mm CAI & K&N Filter JDM V7 STi DCCD Factory Option cluster Garrett GTX3076 - 3" Intake 0.6 A/R, 3" VBand out, T3 twin scroll up 0.82 A/R Process West Anti-Surge Tank with Bosch 044 Pump JDM 08 STi AVCS Cam Sprockets Already on the car: Engine: STi Factory Butterfly-less & Port matched TGV Housings 8mm Phenolic Spacers Parallel Fuel Rails PFI Fuel Pressure Regulator Hyperflow Oil Cooler (Foglight mounted, thermo-less sandwich plate) JustJap Alloy Radiator Drift Catch Can Grimmspeed 3-Port Boost Solenoid Process West V1 FMIC Driveline/Suspension/Brakes: JDM 06 STi DCCD 6 Speed Gearbox Plated R180 Rear Diff Brembo Front Calipers (Painted World Rally Blue) DBA5000 Front Rotors Project Mu HC+ Front Pads Goodridge Braided Brake Lines STi R180 Rear Hubs & Driveshafts Subaru 2 Pot Rear Calipers DBA656 Rear Rotors RaceBrakes Comp2 Rear Pads STi Short Shifter STi GrpN Transmission Mount STi GrpN Pitch Stopper Kartboy Rear Shifter Stay Kartboy Front Stay Bushings TiC Shift Linkage Bushings TiC Pivot Bushings Whiteline 22mm Front Swaybar Whiteline Steering Rack Bushings Whiteline Roll Centre Adjustment Kit Whiteline LCA Offset Rear Bushings (Sport, Max Caster) Superpro LCA Front Bushings H&R Front Camber Bolts Cusco H Brace (Factory U Brace Removed) Cusco Front Strut Brace w/ Integrated Brake Stopper Whiteline Rear Diff Outrigger Bushings Whiteline Rear Subframe Lock Bolts TiC Rear Diff Mount Bushings (Race) STi Pillowball Rear Trailing Arm Superpro Rear Trailing Arm/Hub Bushings STi Pillowball Rear Control Arms Poltec Pillowball Rear Swaybar Links/Mounts Whiteline 22mm Adjustable Rear Swaybar Whiteline Heavy Duty Rear Swaybar Mounts Whiteline Rear Swaybar Lateral Locks Cusco Rear Strut Brace Tein SuperStreet Coilovers (Aus. Spec/Fulcrum, Strut Tops Set for Caster) Volk TE37 17x8 +44 Exterior: KSTech Scoop Delete JDM STi HID Headlights (Kaixen 6000k HID Kit) Coded Skirts Coded Spats Front & Rear Coded Side Markers Coded Mesh Foglight Covers Clear Side Indicators Replica STi Grill Project Mu Lock Nuts Wingless Bootlid (Welded/Resprayed/De-badged) Interior: Greddy SMI Gauges (Oil/Water Temp, Oil Pressure) Greddy Electronic Peak/Warn Boost Gauge Innovate LC1 & XD16 Wideband Kit LinkElectro Knocklink (Custom Outrigger) Spiider DCCDPro Universal Controller STi DCCD Thumbwheel & Manual/Auto Switch Tein EDFC STi Titanium Shift Knob STi Alloy Shifter Trim 04 STi Steering Wheel Brown-Davis Rear Harness Bar Schroth 6 Point Harness (4 Point Setup) Terrible Driver The build is almost complete, but I'll add some pics anyway!
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06-14-2012, 12:05 AM | #2 |
Scooby Specialist
Member#: 166427
Join Date: Dec 2007
Chapter/Region:
South East
Location: boynton bch, fl
Vehicle:03 wrx |
oh man that is nice
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06-14-2012, 12:47 AM | #3 |
Scooby Specialist
Member#: 212509
Join Date: May 2009
Chapter/Region:
NWIC
Location: marysville,WA
Vehicle:unde your hood makin your **** go faster |
all that money and putting in a used timing belt?
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06-14-2012, 08:47 AM | #4 |
Scooby Newbie
Member#: 176002
Join Date: Mar 2008
Chapter/Region:
International
Location: Melbourne, Australia
Vehicle:2001 WRX |
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06-23-2012, 01:53 AM | #5 |
Scooby Specialist
Member#: 166427
Join Date: Dec 2007
Chapter/Region:
South East
Location: boynton bch, fl
Vehicle:03 wrx |
Hey more I candy
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06-23-2012, 07:14 PM | #6 |
Scooby Newbie
Member#: 237470
Join Date: Feb 2010
Location: Grand Prairie, TX.
Vehicle:2007 Varis WB STI P. Silver |
what oil pan is that? And let me know how the gtx3076 turbo does. I have a gt3788r twin scroll and i am thinking of going smaller. I put down 668 at the wheels and believe it or not the turbo is pretty responsive.
Only real difference in our builds is i have dart sleeves and 282/276 Kelford drag cams. So as soon as you have numbers PM me if you dont want to make them public. Thanks dude. |
06-23-2012, 08:29 PM | #7 | |
Scooby Newbie
Member#: 305890
Join Date: Jan 2012
Chapter/Region:
NWIC
Location: Tacoma, Wa
Vehicle:2005 STI WRB |
Quote:
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06-23-2012, 11:04 PM | #8 | |
Scooby Newbie
Member#: 176002
Join Date: Mar 2008
Chapter/Region:
International
Location: Melbourne, Australia
Vehicle:2001 WRX |
Quote:
http://www.hyperflow.com.au/index.ph...hyas-my9707s3k I'm still on my run in tune (done about 450km), and only just started working on cruise and early spool, keeping things <0.8bar and <5000. I can tell you that it's super responsive and really wants to move. Using e90. These turbos down here in Victoria tend to max out at 300kw/400hp atw. I'll be sure to post results when I'm done, will also hit the drags at some point too. |
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06-23-2012, 11:07 PM | #9 |
Scooby Newbie
Member#: 176002
Join Date: Mar 2008
Chapter/Region:
International
Location: Melbourne, Australia
Vehicle:2001 WRX |
As above, the single scroll gt/x3076r's here max out at 300kw/400hp atw on e. that's for single scroll 0.82 a/r rear housings. Being twin scroll I may lose some top end. Hoping the twin vta gates will help with that
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06-24-2012, 01:09 AM | #10 |
Scooby Newbie
Member#: 237470
Join Date: Feb 2010
Location: Grand Prairie, TX.
Vehicle:2007 Varis WB STI P. Silver |
Wow, thats a pricy oil sump even for me
I am about to order the killerbee one but this one seems to have a better oil pick up system. what do you think? http://www.killerbmotorsport.com/ind...imalOilPan.htm I was thinking either way no matter which one i get i am gonna make a custom oil return from the turbo. At 38lbs of boost i have a issue not getting the oil back out of the turbo on decel. |
06-24-2012, 11:25 PM | #11 |
Scooby Newbie
Member#: 323416
Join Date: Jun 2012
Chapter/Region:
Tri-State
Location: Long Island
Vehicle:08' WRX |
Looks like a good start to a great build, few things:
How much boost are you planning on running? Did you decide to run 9:1 pistons to lower the compression? How much clearance do you have on your Brembo's with the 17x8 wheel setup? |
06-25-2012, 06:40 AM | #12 | ||
Scooby Newbie
Member#: 176002
Join Date: Mar 2008
Chapter/Region:
International
Location: Melbourne, Australia
Vehicle:2001 WRX |
Quote:
Quote:
Do you mean raise? Standard compression EJ25T is 8.2 or so. Using an EJ25 block and EJ20 heads raises compression again, and I also opted for the thinner STi headgasket. I haven't done the calcs, but my static compression ratio should be well over 9:1 From memory I have about 5-10mm. They are genuine Rays TE37's. |
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06-26-2012, 12:30 AM | #13 | |
Scooby Newbie
Member#: 323416
Join Date: Jun 2012
Chapter/Region:
Tri-State
Location: Long Island
Vehicle:08' WRX |
Quote:
Im alittle consfused as to why you would use thinner headgaskets which raises your CR when your trying to lower your CR since its already high after swapping heads? I mean if you swap the heads and the CR raises to lets say 10:1 for example and your target CR is about 9:1 adding those gaskets could possibly put you inbetween? I know im not an expert but it sounds contradicting. Like i said please correct me if im wrong theres obviosly a reason for you doing this. Also ive been reading alot into these swaps why dont you just have the 2.0 heads machined out to match the 2.5 heads. It sounds like less of a pain in the ass and from what i understand it yields significant gains all throughout the powerband. This guy seems pretty competent http://forums.nasioc.com/forums/show....php?t=1942615. |
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06-26-2012, 04:05 AM | #14 | |
Scooby Guru
Member#: 158864
Join Date: Sep 2007
Location: Aussieland
Vehicle:2003 SOHC destroker |
Quote:
so if the piston was rated to 8.2:1, it will have a comp ratio of about 9.0:1. remember the pistons have their compression ratio on the sti calculated with the sti head gasket. the head CC's aren't including the head gasket. |
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06-26-2012, 10:12 AM | #15 |
Scooby Newbie
Member#: 176002
Join Date: Mar 2008
Chapter/Region:
International
Location: Melbourne, Australia
Vehicle:2001 WRX |
I'm using e85 full time, so could afford to bump the compression (that was the aim). I used CP's rated at 9:1, very minimal work was done to the combustion chamber - just rounded sharp edges to prevent hot spots. I haven't started tuning midrange or top end yet, but she seems to be taking timing just fine, which is to be expected on e85.
I'm fairly certain the builder recorded all the deck heights, etc, so in theory I could calculate my static CR. Although, I'm sure someone more familiar could probably ballpark it just from experience. Based on the above, my CR may be around 9.8 (assuming a balance of removal of combustion chamber material and deck height matching/used head skimming)? Either way, I'm not overly concerned. As long as I can land this turbo in the high efficiency zones with decent timing, I'll be happy |
06-26-2012, 06:25 PM | #16 |
Scooby Newbie
Member#: 323416
Join Date: Jun 2012
Chapter/Region:
Tri-State
Location: Long Island
Vehicle:08' WRX |
I have read that with E85 you can run a slightly higher CR! Good buildup so far, will you be posting dyno results/ more pics? Also are you using a standalone ECU?
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06-27-2012, 10:57 PM | #17 |
Scooby Newbie
Member#: 176002
Join Date: Mar 2008
Chapter/Region:
International
Location: Melbourne, Australia
Vehicle:2001 WRX |
Thanks. Standard ECU, will convert to Carberry ROM when it's all run in and I'm happy with the MAF tune. Ass-dyno tuning for the moment, will probably attend the next dyno day. I have lots of pics, what are you interested in seeing?
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06-28-2012, 02:03 AM | #18 |
Scooby Newbie
Member#: 323416
Join Date: Jun 2012
Chapter/Region:
Tri-State
Location: Long Island
Vehicle:08' WRX |
Basically whatever you feel is the important parts of your build, like the suspension setup, the interior, your car on the track or dyno, anything really... Im sure me and the other NASIOC members wont be disappointed haha
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06-28-2012, 12:13 PM | #19 |
Scooby Specialist
Member#: 159743
Join Date: Sep 2007
Location: Plymouth Ma
Vehicle:07 STI Limited TurboMike Tuned 2.35 |
Im sure people have already said this but what a great build!! I love that integrated oil pickup for the oil pan too!!!
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06-30-2012, 02:54 AM | #20 |
Scooby Newbie
Member#: 324745
Join Date: Jun 2012
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^^ seriously. Massive props man. Keep it up.
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07-01-2012, 12:59 PM | #21 |
Scooby Newbie
Member#: 176002
Join Date: Mar 2008
Chapter/Region:
International
Location: Melbourne, Australia
Vehicle:2001 WRX |
Thanks guys. Hit 1200km, so time to turn it up soon! Some more pics in the interim:
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07-03-2012, 09:48 PM | #22 |
Scooby Newbie
Member#: 323416
Join Date: Jun 2012
Chapter/Region:
Tri-State
Location: Long Island
Vehicle:08' WRX |
^^^ Sick!
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07-05-2012, 09:18 AM | #23 |
Scooby Specialist
Member#: 232458
Join Date: Dec 2009
Chapter/Region:
SWIC
Location: Las Cruces/El Paso
Vehicle:2005 & 2008 STi Cobb 20g & EFR 7670 |
What type of flange is the GTX3076R? It looks like a T3 but I could be wrong...matches the exhaust housing size too.
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07-06-2012, 03:54 AM | #24 |
Scooby Newbie
Member#: 176002
Join Date: Mar 2008
Chapter/Region:
International
Location: Melbourne, Australia
Vehicle:2001 WRX |
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07-06-2012, 12:43 PM | #25 |
Scooby Specialist
Member#: 232458
Join Date: Dec 2009
Chapter/Region:
SWIC
Location: Las Cruces/El Paso
Vehicle:2005 & 2008 STi Cobb 20g & EFR 7670 |
Nice! Those turbos are really nice!
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